Correcting invalid vcpu calculation and vcpu pinning policy evaluation.
[osm/RO.git] / RO-VIM-openstack / osm_rovim_openstack / tests / test_vimconn_openstack.py
index c5f7038..a351d53 100644 (file)
 This module contains unit tests for the OpenStack VIM connector
 Run this directly with python2 or python3.
 """
-
 import copy
+from copy import deepcopy
+import logging
 import unittest
 
 import mock
+from mock import MagicMock, patch
 from neutronclient.v2_0.client import Client
+from novaclient import exceptions as nvExceptions
+from novaclient.exceptions import ClientException, Conflict
 from osm_ro_plugin import vimconn
+from osm_ro_plugin.vimconn import (
+    VimConnConnectionException,
+    VimConnException,
+    VimConnNotFoundException,
+)
 from osm_rovim_openstack.vimconn_openstack import vimconnector
 
 __author__ = "Igor D.C."
 __date__ = "$23-aug-2017 23:59:59$"
 
+# Variables Used in TestNewVmInstance Class
+name = "basicvm"
+description = "my firewall"
+start = True
+image_id = "408b73-e9cc-5a6a-t270-82cc4811bd4a"
+flavor_id = "208b73-e9cc-5a6a-t270-82cc4811bd4a"
+affinity_group_list = []
+net_list = []
+cloud_config = {}
+disk_list = []
+disk_list2 = [
+    {"size": 10, "image_id": image_id},
+    {"size": 20},
+]
+availability_zone_index = 0
+availability_zone_list = ["nova"]
+floating_network_vim_id = "108b73-e9cc-5a6a-t270-82cc4811bd4a"
+net_id = "83372685-f67f-49fd-8722-eabb7692fc22"
+net2_id = "46472685-f67f-49fd-8722-eabb7692fc22"
+mac_address = "00:00:5e:00:53:af"
+port_id = "03372685-f67f-49fd-8722-eabb7692fc22"
+time_return_value = 156570000
+port2_id = "17472685-f67f-49fd-8722-eabb7692fc22"
+root_vol_id = "tc408b73-r9cc-5a6a-a270-82cc4811bd4a"
+ip_addr1 = "20.3.4.5"
+volume_id = "ac408b73-b9cc-4a6a-a270-82cc4811bd4a"
+volume_id2 = "o4e0e83-b9uu-4akk-a234-89cc4811bd4a"
+volume_id3 = "44e0e83-t9uu-4akk-a234-p9cc4811bd4a"
+virtual_mac_id = "64e0e83-t9uu-4akk-a234-p9cc4811bd4a"
+created_items_all_true = {
+    f"floating_ip:{floating_network_vim_id}": True,
+    f"volume:{volume_id}": True,
+    f"port:{port_id}": True,
+}
+
+
+# Variables used in TestNewFlavor Class
+name1 = "sample-flavor"
+extended = (
+    {
+        "cpu-quota": {"limit": 3},
+        "mem-quota": {"limit": 1},
+        "mempage-size": "LARGE",
+        "cpu-pinning-policy": "DEDICATED",
+        "mem-policy": "STRICT",
+    },
+)
+flavor_data = {
+    "name": name1,
+    "ram": 3,
+    "vcpus": 8,
+    "disk": 50,
+    "extended": extended,
+}
+
+flavor_data2 = {
+    "name": name1,
+    "ram": 3,
+    "vcpus": 8,
+    "disk": 50,
+}
+
 
 class TestSfcOperations(unittest.TestCase):
-    def setUp(self):
-        # instantiate dummy VIM connector so we can test it
+    @mock.patch("logging.getLogger", autospec=True)
+    def setUp(self, mock_logger):
+        # Instantiate dummy VIM connector so we can test it
+        # It throws exception because of dummy parameters,
+        # We are disabling the logging of exception not to print them to console.
+        mock_logger = logging.getLogger()
+        mock_logger.disabled = True
         self.vimconn = vimconnector(
             "123",
             "openstackvim",
@@ -210,10 +286,15 @@ class TestSfcOperations(unittest.TestCase):
 
         # call the VIM connector
         if sfc_encap is None:
+            dict_to_neutron["port_chain"]["chain_parameters"] = {"correlation": "mpls"}
             if spi is None:
-                result = self.vimconn.new_sfp(name, classifications, sfs)
+                result = self.vimconn.new_sfp(
+                    name, classifications, sfs, sfc_encap=False
+                )
             else:
-                result = self.vimconn.new_sfp(name, classifications, sfs, spi=spi)
+                result = self.vimconn.new_sfp(
+                    name, classifications, sfs, sfc_encap=False, spi=spi
+                )
         else:
             if spi is None:
                 result = self.vimconn.new_sfp(name, classifications, sfs, sfc_encap)
@@ -360,8 +441,8 @@ class TestSfcOperations(unittest.TestCase):
 
     @mock.patch.object(Client, "create_sfc_port_chain")
     def test_new_sfp_without_sfc_encap(self, create_sfc_port_chain):
-        self._test_new_sfp(create_sfc_port_chain, False, None)
-        self._test_new_sfp(create_sfc_port_chain, False, 25)
+        self._test_new_sfp(create_sfc_port_chain, None, None)
+        self._test_new_sfp(create_sfc_port_chain, None, 25)
 
     @mock.patch.object(Client, "create_sfc_port_chain")
     def test_new_sfp_default_sfc_encap(self, create_sfc_port_chain):
@@ -1046,5 +1127,6639 @@ class TestSfcOperations(unittest.TestCase):
         self.assertEqual(result, "638f957c-82df-11e7-b7c8-132706021464")
 
 
+class Status:
+    def __init__(self, s):
+        self.status = s
+
+    def __str__(self):
+        return self.status
+
+
+class CopyingMock(MagicMock):
+    def __call__(self, *args, **kwargs):
+        args = deepcopy(args)
+        kwargs = deepcopy(kwargs)
+        return super(CopyingMock, self).__call__(*args, **kwargs)
+
+
+class TestNewVmInstance(unittest.TestCase):
+    @patch("logging.getLogger", autospec=True)
+    def setUp(self, mock_logger):
+        # Instantiate dummy VIM connector so we can test it
+        # It throws exception because of dummy parameters,
+        # We are disabling the logging of exception not to print them to console.
+        mock_logger = logging.getLogger()
+        mock_logger.disabled = True
+        self.vimconn = vimconnector(
+            "123",
+            "openstackvim",
+            "456",
+            "789",
+            "http://dummy.url",
+            None,
+            "user",
+            "pass",
+        )
+        self.vimconn.neutron = CopyingMock()
+        self.vimconn.nova = CopyingMock()
+        self.vimconn.cinder = CopyingMock()
+        self.server = MagicMock(object, autospec=True)
+        self.server.tenant_id = "408b73-r9cc-5a6a-a270-82cc4811bd4a"
+        self.server.id = "908b73-e9cc-5a6a-t270-82cc4811bd4a"
+        self.vimconn.config["security_groups"] = "default"
+        self.vimconn.config["keypair"] = "my_keypair"
+        self.vimconn.security_groups_id = "12345"
+        self.vimconn.nova.api_version.get_string.return_value = "2.32"
+        self.vimconn.logger = CopyingMock()
+
+    @patch.object(vimconnector, "_get_ids_from_name")
+    def test_prepare_port_dict_security_security_groups_exists_in_config(
+        self, mock_get_ids
+    ):
+        """In VIM config security_groups exists, net port_security is True
+        no_port_security_extension does not exist.
+        """
+        self.vimconn.config = {"security_groups": "example_security_group"}
+        net = {"port_security": True}
+        port_dict = {}
+        result_dict = {"security_groups": "12345"}
+
+        self.vimconn._prepare_port_dict_security_groups(net, port_dict)
+        self.assertDictEqual(result_dict, port_dict)
+        mock_get_ids.assert_not_called()
+
+    @patch.object(vimconnector, "_get_ids_from_name")
+    def test_prepare_port_dict_security_security_groups_exists_in_config_no_security_groups_id(
+        self, mock_get_ids
+    ):
+        """In VIM config Security_groups exists, net port_security is True, vim security_groups_id does not exist,
+        no_port_security_extension does not exist.
+        """
+        self.vimconn.config = {"security_groups": "example_security_group"}
+        self.vimconn.security_groups_id = None
+        net = {"port_security": True}
+        port_dict = {}
+        result_dict = {"security_groups": None}
+
+        self.vimconn._prepare_port_dict_security_groups(net, port_dict)
+        self.assertDictEqual(result_dict, port_dict)
+        mock_get_ids.assert_called()
+
+    @patch.object(vimconnector, "_get_ids_from_name")
+    def test_prepare_port_dict_security_security_groups_exists_security_extension_true_in_config(
+        self, mock_get_ids
+    ):
+        """In VIM config security_groups exists, net port_security is True, in VIM security_groups_id exists,
+        no_port_security_extension set to True.
+        """
+        self.vimconn.config = {
+            "security_groups": "example_security_group",
+            "no_port_security_extension": True,
+        }
+        net = {"port_security": True}
+        port_dict = {}
+        result_dict = {}
+
+        self.vimconn._prepare_port_dict_security_groups(net, port_dict)
+        self.assertDictEqual(result_dict, port_dict)
+        mock_get_ids.assert_not_called()
+
+    @patch.object(vimconnector, "_get_ids_from_name")
+    def test_prepare_port_dict_security_no_security_groups_in_config(
+        self, mock_get_ids
+    ):
+        """In VIM config security_group does not exist, net port_security True, in VIM security_groups_id exists,
+        no_port_security_extension does not exist."""
+        self.vimconn.config = {}
+        net = {"port_security": True}
+        port_dict = {}
+        result_dict = {}
+
+        self.vimconn._prepare_port_dict_security_groups(net, port_dict)
+        self.assertDictEqual(result_dict, port_dict)
+        mock_get_ids.assert_not_called()
+
+    @patch.object(vimconnector, "_get_ids_from_name")
+    def test_prepare_port_dict_security_no_security_groups_security_extension_true_in_config(
+        self, mock_get_ids
+    ):
+        """Security_group does not exist, net port_security is True, in VIM security_groups_id exists,
+        no_port_security_extension set to True."""
+        self.vimconn.config = {"no_port_security_extension": True}
+        net = {"port_security": True}
+        port_dict = {}
+        result_dict = {}
+
+        self.vimconn._prepare_port_dict_security_groups(net, port_dict)
+        self.assertDictEqual(result_dict, port_dict)
+        mock_get_ids.assert_not_called()
+
+    @patch.object(vimconnector, "_get_ids_from_name")
+    def test_prepare_port_dict_security_security_groups_exists_net_port_security_false(
+        self, mock_get_ids
+    ):
+        """In VIM config security_group exists, net port_security False, security_groups_id exists,
+        no_port_security_extension does not exist."""
+        self.vimconn.config = {"security_groups": "example_security_group"}
+        net = {"port_security": False}
+        port_dict = {}
+        result_dict = {}
+
+        self.vimconn._prepare_port_dict_security_groups(net, port_dict)
+        self.assertDictEqual(result_dict, port_dict)
+        mock_get_ids.assert_not_called()
+
+    @patch.object(vimconnector, "_get_ids_from_name")
+    def test_prepare_port_dict_security_net_port_security_false_port_security_extension_true(
+        self, mock_get_ids
+    ):
+        """In VIM config security_group exists, net port_security False, security_groups_id exists,
+        no_port_security_extension set to True."""
+        self.vimconn.config = {
+            "security_groups": "example_security_group",
+            "no_port_security_extension": True,
+        }
+        net = {"port_security": False}
+        port_dict = {}
+        result_dict = {}
+
+        self.vimconn._prepare_port_dict_security_groups(net, port_dict)
+        self.assertDictEqual(result_dict, port_dict)
+        mock_get_ids.assert_not_called()
+
+    def test_prepare_port_dict_binding_net_type_virtual(self):
+        """net type is virtual."""
+        net = {"type": "virtual"}
+        port_dict = {}
+        result_dict = {}
+        self.vimconn._prepare_port_dict_binding(net, port_dict)
+        self.assertDictEqual(result_dict, port_dict)
+
+    def test_prepare_port_dict_binding_net_type_vf(self):
+        """net type is VF, vim_type is not VIO."""
+        net = {"type": "VF"}
+        self.vimconn.vim_type = None
+        port_dict = {}
+        result_dict = {"binding:vnic_type": "direct"}
+        self.vimconn._prepare_port_dict_binding(net, port_dict)
+        self.assertDictEqual(port_dict, result_dict)
+
+    def test_prepare_port_dict_binding_net_type_sriov_vim_type_vio(self):
+        """net type is SR-IOV, vim_type is VIO."""
+        net = {"type": "SR-IOV"}
+        self.vimconn.vim_type = "VIO"
+        port_dict = {}
+        result_dict = {
+            "binding:vnic_type": "direct",
+            "port_security_enabled": False,
+            "provider_security_groups": [],
+            "security_groups": [],
+        }
+        self.vimconn._prepare_port_dict_binding(net, port_dict)
+        self.assertDictEqual(port_dict, result_dict)
+
+    def test_prepare_port_dict_binding_net_type_passthrough(self):
+        """net type is pci-passthrough."""
+        net = {"type": "PCI-PASSTHROUGH"}
+        port_dict = {}
+        result_dict = {
+            "binding:vnic_type": "direct-physical",
+        }
+        self.vimconn._prepare_port_dict_binding(net, port_dict)
+        self.assertDictEqual(port_dict, result_dict)
+
+    def test_prepare_port_dict_binding_no_net_type(self):
+        """net type is missing."""
+        net = {}
+        port_dict = {}
+        with self.assertRaises(VimConnException) as err:
+            self.vimconn._prepare_port_dict_binding(net, port_dict)
+        self.assertEqual(str(err.exception), "Type is missing in the network details.")
+
+    def test_set_fixed_ip(self):
+        """new_port has fixed ip."""
+        net = {}
+        new_port = {
+            "port": {
+                "fixed_ips": [{"ip_address": "10.1.2.3"}, {"ip_address": "20.1.2.3"}]
+            }
+        }
+        result = {"ip": "10.1.2.3"}
+        self.vimconn._set_fixed_ip(new_port, net)
+        self.assertDictEqual(net, result)
+
+    def test_set_fixed_ip_no_fixed_ip(self):
+        """new_port does not have fixed ip."""
+        net = {}
+        new_port = {"port": {}}
+        result = {"ip": None}
+        self.vimconn._set_fixed_ip(new_port, net)
+        self.assertDictEqual(net, result)
+
+    def test_set_fixed_ip_raise_exception(self):
+        """new_port does not have port details."""
+        net = {}
+        new_port = {}
+        with self.assertRaises(Exception) as err:
+            self.vimconn._set_fixed_ip(new_port, net)
+        self.assertEqual(type(err.exception), KeyError)
+
+    def test_prepare_port_dict_mac_ip_addr(self):
+        """mac address and ip address exist."""
+        net = {
+            "mac_address": mac_address,
+            "ip_address": "10.0.1.5",
+        }
+        port_dict = {}
+        result_dict = {
+            "mac_address": mac_address,
+            "fixed_ips": [{"ip_address": "10.0.1.5"}],
+        }
+        self.vimconn._prepare_port_dict_mac_ip_addr(net, port_dict)
+        self.assertDictEqual(port_dict, result_dict)
+
+    def test_prepare_port_dict_mac_ip_addr_no_mac_and_ip(self):
+        """mac address and ip address does not exist."""
+        net = {}
+        port_dict = {}
+        result_dict = {}
+        self.vimconn._prepare_port_dict_mac_ip_addr(net, port_dict)
+        self.assertDictEqual(port_dict, result_dict)
+
+    def test_create_new_port(self):
+        """new port has id and mac address."""
+        new_port = {
+            "port": {
+                "id": port_id,
+                "mac_address": mac_address,
+            },
+        }
+        self.vimconn.neutron.create_port.return_value = new_port
+        net, port_dict, created_items = {}, {}, {}
+        expected_result = new_port
+        expected_net = {
+            "mac_adress": mac_address,
+            "vim_id": port_id,
+        }
+        expected_created_items = {f"port:{port_id}": True}
+        result = self.vimconn._create_new_port(port_dict, created_items, net)
+        self.assertDictEqual(result, expected_result)
+        self.assertEqual(net, expected_net)
+        self.assertEqual(created_items, expected_created_items)
+        self.vimconn.neutron.create_port.assert_called_once_with({"port": port_dict})
+
+    def test_create_new_port_without_mac_or_id(self):
+        """new port does not have mac address or ID."""
+        new_port = {}
+        self.vimconn.neutron.create_port.return_value = new_port
+        net, port_dict, created_items = {}, {}, {}
+        with self.assertRaises(KeyError):
+            self.vimconn._create_new_port(port_dict, created_items, net)
+        self.vimconn.neutron.create_port.assert_called_once_with({"port": port_dict})
+
+    def test_create_new_port_neutron_create_port_raises_exception(self):
+        """Neutron create port raises exception."""
+        self.vimconn.neutron.create_port.side_effect = VimConnException(
+            "New port is not created."
+        )
+        net, port_dict, created_items = {}, {}, {}
+        with self.assertRaises(VimConnException):
+            self.vimconn._create_new_port(port_dict, created_items, net)
+        self.vimconn.neutron.create_port.assert_called_once_with({"port": port_dict})
+
+    @patch.object(vimconnector, "_prepare_port_dict_security_groups")
+    @patch.object(vimconnector, "_prepare_port_dict_binding")
+    @patch.object(vimconnector, "_prepare_port_dict_mac_ip_addr")
+    @patch.object(vimconnector, "_create_new_port")
+    @patch.object(vimconnector, "_set_fixed_ip")
+    def test_create_port(
+        self,
+        mock_set_fixed_ip,
+        mock_create_new_port,
+        mock_prepare_port_dict_mac_ip_addr,
+        mock_prepare_port_dict_binding,
+        mock_prepare_port_dict_security_groups,
+    ):
+        """Net has name, type, net-id."""
+
+        net = {
+            "net_id": net_id,
+            "name": "management",
+            "type": "virtual",
+        }
+        created_items = {}
+        new_port = {
+            "port": {
+                "id": net_id,
+                "mac_address": mac_address,
+                "name": "management",
+                "fixed_ips": [{"ip_address": ip_addr1}],
+            },
+        }
+        mock_create_new_port.return_value = new_port
+        expected_port = {
+            "port-id": net_id,
+            "tag": "management",
+        }
+        port_dict = {
+            "network_id": net_id,
+            "name": "management",
+            "admin_state_up": True,
+        }
+
+        new_port_result, port_result = self.vimconn._create_port(
+            net, name, created_items
+        )
+
+        self.assertDictEqual(new_port_result, new_port)
+        self.assertDictEqual(port_result, expected_port)
+
+        mock_prepare_port_dict_security_groups.assert_called_once_with(net, port_dict)
+        mock_prepare_port_dict_binding.assert_called_once_with(net, port_dict)
+        mock_prepare_port_dict_mac_ip_addr.assert_called_once_with(net, port_dict)
+        mock_create_new_port.assert_called_once_with(port_dict, created_items, net)
+        mock_set_fixed_ip.assert_called_once_with(new_port, net)
+
+    @patch.object(vimconnector, "_prepare_port_dict_security_groups")
+    @patch.object(vimconnector, "_prepare_port_dict_binding")
+    @patch.object(vimconnector, "_prepare_port_dict_mac_ip_addr")
+    @patch.object(vimconnector, "_create_new_port")
+    @patch.object(vimconnector, "_set_fixed_ip")
+    def test_create_port_no_port_name(
+        self,
+        mock_set_fixed_ip,
+        mock_create_new_port,
+        mock_prepare_port_dict_mac_ip_addr,
+        mock_prepare_port_dict_binding,
+        mock_prepare_port_dict_security_groups,
+    ):
+        """Net has no name."""
+        net = {
+            "net_id": net_id,
+            "type": "virtual",
+        }
+        created_items = {}
+        new_port = {
+            "port": {
+                "id": net_id,
+                "mac_address": mac_address,
+                "name": name,
+                "fixed_ips": [{"ip_address": ip_addr1}],
+            },
+        }
+        mock_create_new_port.return_value = new_port
+        expected_port = {
+            "port-id": net_id,
+            "tag": name,
+        }
+        port_dict = {
+            "network_id": net_id,
+            "admin_state_up": True,
+            "name": name,
+        }
+
+        new_port_result, port_result = self.vimconn._create_port(
+            net, name, created_items
+        )
+
+        self.assertDictEqual(new_port_result, new_port)
+        self.assertDictEqual(port_result, expected_port)
+
+        mock_prepare_port_dict_security_groups.assert_called_once_with(net, port_dict)
+        mock_prepare_port_dict_binding.assert_called_once_with(net, port_dict)
+        mock_prepare_port_dict_mac_ip_addr.assert_called_once_with(net, port_dict)
+        mock_create_new_port.assert_called_once_with(port_dict, created_items, net)
+        mock_set_fixed_ip.assert_called_once_with(new_port, net)
+
+    @patch.object(vimconnector, "_prepare_port_dict_security_groups")
+    @patch.object(vimconnector, "_prepare_port_dict_binding")
+    @patch.object(vimconnector, "_prepare_port_dict_mac_ip_addr")
+    @patch.object(vimconnector, "_create_new_port")
+    @patch.object(vimconnector, "_set_fixed_ip")
+    def test_create_port_nova_api_version_smaller_than_232(
+        self,
+        mock_set_fixed_ip,
+        mock_create_new_port,
+        mock_prepare_port_dict_mac_ip_addr,
+        mock_prepare_port_dict_binding,
+        mock_prepare_port_dict_security_groups,
+    ):
+        """Nova api version is smaller than 2.32."""
+        self.vimconn.nova.api_version.get_string.return_value = "2.30"
+        net = {
+            "net_id": net_id,
+            "type": "virtual",
+        }
+        created_items = {}
+        new_port = {
+            "port": {
+                "id": net_id,
+                "mac_address": mac_address,
+                "name": name,
+                "fixed_ips": [{"ip_address": ip_addr1}],
+            },
+        }
+        mock_create_new_port.return_value = new_port
+        expected_port = {
+            "port-id": net_id,
+        }
+        port_dict = {
+            "network_id": net_id,
+            "admin_state_up": True,
+            "name": name,
+        }
+
+        new_port_result, port_result = self.vimconn._create_port(
+            net, name, created_items
+        )
+
+        self.assertDictEqual(new_port_result, new_port)
+        self.assertDictEqual(port_result, expected_port)
+
+        mock_prepare_port_dict_security_groups.assert_called_once_with(net, port_dict)
+        mock_prepare_port_dict_binding.assert_called_once_with(net, port_dict)
+        mock_prepare_port_dict_mac_ip_addr.assert_called_once_with(net, port_dict)
+        mock_create_new_port.assert_called_once_with(port_dict, created_items, net)
+        mock_set_fixed_ip.assert_called_once_with(new_port, net)
+
+    @patch.object(vimconnector, "_prepare_port_dict_security_groups")
+    @patch.object(vimconnector, "_prepare_port_dict_binding")
+    @patch.object(vimconnector, "_prepare_port_dict_mac_ip_addr")
+    @patch.object(vimconnector, "_create_new_port")
+    @patch.object(vimconnector, "_set_fixed_ip")
+    def test_create_port_create_new_port_raise_exception(
+        self,
+        mock_set_fixed_ip,
+        mock_create_new_port,
+        mock_prepare_port_dict_mac_ip_addr,
+        mock_prepare_port_dict_binding,
+        mock_prepare_port_dict_security_groups,
+    ):
+        """_create_new_port method raises exception."""
+        net = {
+            "net_id": net_id,
+            "type": "virtual",
+        }
+        created_items = {}
+        mock_create_new_port.side_effect = Exception
+        port_dict = {
+            "network_id": net_id,
+            "admin_state_up": True,
+            "name": name,
+        }
+
+        with self.assertRaises(Exception):
+            self.vimconn._create_port(net, name, created_items)
+
+        mock_prepare_port_dict_security_groups.assert_called_once_with(net, port_dict)
+        mock_prepare_port_dict_binding.assert_called_once_with(net, port_dict)
+        mock_prepare_port_dict_mac_ip_addr.assert_called_once_with(net, port_dict)
+        mock_create_new_port.assert_called_once_with(port_dict, created_items, net)
+        mock_set_fixed_ip.assert_not_called()
+
+    @patch.object(vimconnector, "_prepare_port_dict_security_groups")
+    @patch.object(vimconnector, "_prepare_port_dict_binding")
+    @patch.object(vimconnector, "_prepare_port_dict_mac_ip_addr")
+    @patch.object(vimconnector, "_create_new_port")
+    @patch.object(vimconnector, "_set_fixed_ip")
+    def test_create_port_create_sec_groups_raises_exception(
+        self,
+        mock_set_fixed_ip,
+        mock_create_new_port,
+        mock_prepare_port_dict_mac_ip_addr,
+        mock_prepare_port_dict_binding,
+        mock_prepare_port_dict_security_groups,
+    ):
+        """_prepare_port_dict_security_groups method raises exception."""
+        net = {
+            "net_id": net_id,
+            "type": "virtual",
+        }
+        created_items = {}
+        mock_prepare_port_dict_security_groups.side_effect = Exception
+        port_dict = {
+            "network_id": net_id,
+            "admin_state_up": True,
+            "name": name,
+        }
+
+        with self.assertRaises(Exception):
+            self.vimconn._create_port(net, name, created_items)
+
+        mock_prepare_port_dict_security_groups.assert_called_once_with(net, port_dict)
+
+        mock_prepare_port_dict_binding.assert_not_called()
+        mock_prepare_port_dict_mac_ip_addr.assert_not_called()
+        mock_create_new_port.assert_not_called()
+        mock_set_fixed_ip.assert_not_called()
+
+    @patch.object(vimconnector, "_prepare_port_dict_security_groups")
+    @patch.object(vimconnector, "_prepare_port_dict_binding")
+    @patch.object(vimconnector, "_prepare_port_dict_mac_ip_addr")
+    @patch.object(vimconnector, "_create_new_port")
+    @patch.object(vimconnector, "_set_fixed_ip")
+    def test_create_port_create_port_dict_binding_raise_exception(
+        self,
+        mock_set_fixed_ip,
+        mock_create_new_port,
+        mock_prepare_port_dict_mac_ip_addr,
+        mock_prepare_port_dict_binding,
+        mock_prepare_port_dict_security_groups,
+    ):
+        """_prepare_port_dict_binding method raises exception."""
+
+        net = {
+            "net_id": net_id,
+            "type": "virtual",
+        }
+        created_items = {}
+        mock_prepare_port_dict_binding.side_effect = Exception
+        port_dict = {
+            "network_id": net_id,
+            "admin_state_up": True,
+            "name": name,
+        }
+
+        with self.assertRaises(Exception):
+            self.vimconn._create_port(net, name, created_items)
+
+        mock_prepare_port_dict_security_groups.assert_called_once_with(net, port_dict)
+
+        mock_prepare_port_dict_binding.assert_called_once_with(net, port_dict)
+
+        mock_prepare_port_dict_mac_ip_addr.assert_not_called()
+        mock_create_new_port.assert_not_called()
+        mock_set_fixed_ip.assert_not_called()
+
+    @patch.object(vimconnector, "_prepare_port_dict_security_groups")
+    @patch.object(vimconnector, "_prepare_port_dict_binding")
+    @patch.object(vimconnector, "_prepare_port_dict_mac_ip_addr")
+    @patch.object(vimconnector, "_create_new_port")
+    @patch.object(vimconnector, "_set_fixed_ip")
+    def test_create_port_create_port_mac_ip_addr_raise_exception(
+        self,
+        mock_set_fixed_ip,
+        mock_create_new_port,
+        mock_prepare_port_dict_mac_ip_addr,
+        mock_prepare_port_dict_binding,
+        mock_prepare_port_dict_security_groups,
+    ):
+        """prepare_port_dict_mac_ip_addr method raises exception."""
+        net = {
+            "net_id": net_id,
+            "type": "virtual",
+        }
+        created_items = {}
+        mock_prepare_port_dict_mac_ip_addr.side_effect = Exception
+        port_dict = {
+            "network_id": net_id,
+            "admin_state_up": True,
+            "name": name,
+        }
+
+        with self.assertRaises(Exception):
+            self.vimconn._create_port(net, name, created_items)
+
+        mock_prepare_port_dict_security_groups.assert_called_once_with(net, port_dict)
+        mock_prepare_port_dict_binding.assert_called_once_with(net, port_dict)
+        mock_prepare_port_dict_mac_ip_addr.assert_called_once_with(net, port_dict)
+
+        mock_create_new_port.assert_not_called()
+        mock_set_fixed_ip.assert_not_called()
+
+    @patch.object(vimconnector, "_prepare_port_dict_security_groups")
+    @patch.object(vimconnector, "_prepare_port_dict_binding")
+    @patch.object(vimconnector, "_prepare_port_dict_mac_ip_addr")
+    @patch.object(vimconnector, "_create_new_port")
+    @patch.object(vimconnector, "_set_fixed_ip")
+    def test_create_port_create_port_set_fixed_ip_raise_exception(
+        self,
+        mock_set_fixed_ip,
+        mock_create_new_port,
+        mock_prepare_port_dict_mac_ip_addr,
+        mock_prepare_port_dict_binding,
+        mock_prepare_port_dict_security_groups,
+    ):
+        """_set_fixed_ip method raises exception."""
+        net = {
+            "net_id": net_id,
+            "type": "virtual",
+        }
+        created_items = {}
+        mock_set_fixed_ip.side_effect = VimConnException(
+            "Port detail is missing in new_port."
+        )
+        port_dict = {
+            "network_id": net_id,
+            "admin_state_up": True,
+            "name": name,
+        }
+        new_port = {
+            "port": {
+                "id": net_id,
+                "mac_address": mac_address,
+                "name": name,
+                "fixed_ips": [{"ip_address": ip_addr1}],
+            },
+        }
+        mock_create_new_port.return_value = new_port
+
+        with self.assertRaises(VimConnException):
+            self.vimconn._create_port(net, name, created_items)
+
+        mock_prepare_port_dict_security_groups.assert_called_once_with(net, port_dict)
+        mock_prepare_port_dict_binding.assert_called_once_with(net, port_dict)
+        mock_prepare_port_dict_mac_ip_addr.assert_called_once_with(net, port_dict)
+        mock_create_new_port.assert_called_once_with(port_dict, created_items, net)
+        mock_set_fixed_ip.assert_called_once_with(new_port, net)
+
+    @patch.object(vimconnector, "_reload_connection")
+    @patch.object(vimconnector, "_create_port")
+    def test_prepare_network_for_vm_instance_no_net_id(
+        self, mock_create_port, mock_reload_connection
+    ):
+        """Nets do not have net_id"""
+        mock_reload_connection.side_effect = None
+        created_items = {}
+        net_list = [
+            {
+                "use": "mgmt",
+                "port_security": False,
+                "exit_on_floating_ip_error": False,
+                "port_security_disable_strategy": "full",
+            },
+            {
+                "port_security": True,
+                "exit_on_floating_ip_error": False,
+                "floating_ip": True,
+            },
+        ]
+        net_list_vim = []
+        external_network, no_secured_ports = [], []
+        expected_external_network, expected_no_secured_ports = [], []
+        expected_net_list_vim = []
+
+        self.vimconn._prepare_network_for_vminstance(
+            name,
+            net_list,
+            created_items,
+            net_list_vim,
+            external_network,
+            no_secured_ports,
+        )
+        self.assertEqual(expected_net_list_vim, net_list_vim)
+        self.assertEqual(external_network, expected_external_network)
+        self.assertEqual(expected_no_secured_ports, no_secured_ports)
+
+        mock_create_port.assert_not_called()
+
+    @patch.object(vimconnector, "_reload_connection")
+    @patch.object(vimconnector, "_create_port")
+    def test_prepare_network_for_vm_instance_empty_net_list(
+        self, mock_create_port, mock_reload_connection
+    ):
+        """Net list is empty."""
+        mock_reload_connection.side_effect = None
+        created_items = {}
+        net_list_vim = []
+        external_network, no_secured_ports = [], []
+        expected_external_network, expected_no_secured_ports = [], []
+        expected_net_list_vim = []
+
+        self.vimconn._prepare_network_for_vminstance(
+            name,
+            net_list,
+            created_items,
+            net_list_vim,
+            external_network,
+            no_secured_ports,
+        )
+        self.assertEqual(expected_net_list_vim, net_list_vim)
+        self.assertEqual(external_network, expected_external_network)
+        self.assertEqual(expected_no_secured_ports, no_secured_ports)
+
+        mock_create_port.assert_not_called()
+
+    @patch.object(vimconnector, "_reload_connection")
+    @patch.object(vimconnector, "_create_port")
+    def test_prepare_network_for_vm_instance_use_floating_ip_false_mgmt_net(
+        self, mock_create_port, mock_reload_connection
+    ):
+        """Nets have net-id, floating_ip False, mgmt network."""
+        mock_reload_connection.side_effect = None
+        created_items = {}
+        net_list = [
+            {
+                "net_id": net2_id,
+                "floating_ip": False,
+                "use": "mgmt",
+            }
+        ]
+        net_list_vim = []
+        mock_create_port.side_effect = [
+            (
+                {
+                    "port": {
+                        "id": port2_id,
+                        "mac_address": mac_address,
+                        "name": name,
+                    },
+                },
+                {"port-dict": port2_id},
+            ),
+        ]
+        external_network, no_secured_ports = [], []
+        expected_external_network, expected_no_secured_ports = [], []
+        expected_net_list_vim = [{"port-dict": port2_id}]
+        self.vimconn._prepare_network_for_vminstance(
+            name,
+            net_list,
+            created_items,
+            net_list_vim,
+            external_network,
+            no_secured_ports,
+        )
+        self.assertEqual(expected_net_list_vim, net_list_vim)
+        self.assertEqual(external_network, expected_external_network)
+        self.assertEqual(expected_no_secured_ports, no_secured_ports)
+
+        mock_create_port.assert_called_once_with(
+            {
+                "net_id": net2_id,
+                "floating_ip": False,
+                "use": "mgmt",
+            },
+            name,
+            created_items,
+        )
+
+    @patch.object(vimconnector, "_reload_connection")
+    def test_prepare_network_for_vm_instance_mgmt_net_net_port_security_and_floating_ip_true(
+        self, mock_reload_connection
+    ):
+        """Nets have net-id, use_floating_ip False in VIM config, mgmt network, net floating_ip is True."""
+        self.vimconn.config["use_floating_ip"] = False
+        mock_create_port = CopyingMock()
+        mock_reload_connection.side_effect = None
+        created_items = {}
+        net_list = [
+            {
+                "net_id": net2_id,
+                "floating_ip": True,
+                "use": "mgmt",
+            }
+        ]
+        net_list_vim = []
+        mock_create_port.side_effect = [
+            (
+                {
+                    "port": {
+                        "id": port2_id,
+                        "mac_address": mac_address,
+                        "name": name,
+                    },
+                },
+                {"port-dict": port2_id},
+            ),
+        ]
+        external_network, no_secured_ports = [], []
+        expected_external_network = [
+            {
+                "net_id": net2_id,
+                "floating_ip": True,
+                "use": "mgmt",
+                "exit_on_floating_ip_error": True,
+            },
+        ]
+        expected_no_secured_ports = []
+        expected_net_list_vim = [{"port-dict": port2_id}]
+        with patch.object(vimconnector, "_create_port", mock_create_port):
+            self.vimconn._prepare_network_for_vminstance(
+                name,
+                net_list,
+                created_items,
+                net_list_vim,
+                external_network,
+                no_secured_ports,
+            )
+        self.assertEqual(expected_net_list_vim, net_list_vim)
+        self.assertEqual(external_network, expected_external_network)
+        self.assertEqual(expected_no_secured_ports, no_secured_ports)
+
+        mock_create_port.assert_called_once_with(
+            {
+                "net_id": net2_id,
+                "floating_ip": True,
+                "use": "mgmt",
+            },
+            name,
+            created_items,
+        )
+
+    @patch.object(vimconnector, "_reload_connection")
+    def test_prepare_network_for_vm_instance_use_floating_ip_true_mgmt_net_port_security_false(
+        self, mock_reload_connection
+    ):
+        """Nets have net-id, use_floating_ip is True in VIM config, mgmt network, net port security is False."""
+        mock_create_port = CopyingMock()
+        self.vimconn.config["use_floating_ip"] = True
+        self.vimconn.config["no_port_security_extension"] = False
+        mock_reload_connection.side_effect = None
+        created_items = {}
+
+        net_list = [
+            {
+                "net_id": net2_id,
+                "use": "mgmt",
+                "port_security": False,
+                "exit_on_floating_ip_error": False,
+                "port_security_disable_strategy": "full",
+            }
+        ]
+        net_list_vim = []
+        mock_create_port.side_effect = [
+            (
+                {
+                    "port": {
+                        "id": port2_id,
+                        "mac_address": mac_address,
+                        "name": name,
+                    },
+                },
+                {"port-dict": port2_id},
+            ),
+        ]
+        external_network, no_secured_ports = [], []
+        expected_external_network = [
+            {
+                "net_id": net2_id,
+                "use": "mgmt",
+                "port_security": False,
+                "exit_on_floating_ip_error": False,
+                "port_security_disable_strategy": "full",
+                "floating_ip": True,
+            },
+        ]
+        expected_no_secured_ports = [(port2_id, "full")]
+        expected_net_list_vim = [{"port-dict": port2_id}]
+        with patch.object(vimconnector, "_create_port", mock_create_port):
+            self.vimconn._prepare_network_for_vminstance(
+                name,
+                net_list,
+                created_items,
+                net_list_vim,
+                external_network,
+                no_secured_ports,
+            )
+
+        mock_create_port.assert_called_once_with(
+            {
+                "net_id": net2_id,
+                "use": "mgmt",
+                "port_security": False,
+                "exit_on_floating_ip_error": False,
+                "port_security_disable_strategy": "full",
+            },
+            name,
+            created_items,
+        )
+        self.assertEqual(expected_net_list_vim, net_list_vim)
+        self.assertEqual(external_network, expected_external_network)
+        self.assertEqual(expected_no_secured_ports, no_secured_ports)
+
+    @patch.object(vimconnector, "_reload_connection")
+    def test_prepare_network_for_vm_instance_use_fip_true_non_mgmt_net_port_security_false(
+        self, mock_reload_connection
+    ):
+        """Nets have net-id, use_floating_ip True in VIM config, non-mgmt network, port security is False."""
+        mock_create_port = CopyingMock()
+        self.vimconn.config["use_floating_ip"] = True
+        self.vimconn.config["no_port_security_extension"] = False
+        mock_reload_connection.side_effect = None
+        created_items = {}
+
+        net_list = [
+            {
+                "net_id": net2_id,
+                "use": "other",
+                "port_security": False,
+                "port_security_disable_strategy": "full",
+            }
+        ]
+        net_list_vim = []
+        mock_create_port.side_effect = [
+            (
+                {
+                    "port": {
+                        "id": port2_id,
+                        "mac_address": mac_address,
+                        "name": name,
+                    },
+                },
+                {"port-dict": port2_id},
+            ),
+        ]
+        external_network, no_secured_ports = [], []
+        expected_external_network = []
+        expected_no_secured_ports = [(port2_id, "full")]
+        expected_net_list_vim = [{"port-dict": port2_id}]
+        with patch.object(vimconnector, "_create_port", mock_create_port):
+            self.vimconn._prepare_network_for_vminstance(
+                name,
+                net_list,
+                created_items,
+                net_list_vim,
+                external_network,
+                no_secured_ports,
+            )
+
+        mock_create_port.assert_called_once_with(
+            {
+                "net_id": net2_id,
+                "use": "other",
+                "port_security": False,
+                "port_security_disable_strategy": "full",
+            },
+            name,
+            created_items,
+        )
+        self.assertEqual(expected_net_list_vim, net_list_vim)
+        self.assertEqual(external_network, expected_external_network)
+        self.assertEqual(expected_no_secured_ports, no_secured_ports)
+
+    @patch.object(vimconnector, "_reload_connection")
+    def test_prepare_network_for_vm_instance_use_fip_true_non_mgmt_net_port_security_true(
+        self, mock_reload_connection
+    ):
+        """Nets have net-id, use_floating_ip is True in VIM config, non-mgmt network, net port security is True."""
+        mock_create_port = CopyingMock()
+        self.vimconn.config["use_floating_ip"] = True
+        self.vimconn.config["no_port_security_extension"] = True
+        mock_reload_connection.side_effect = None
+        created_items = {}
+
+        net_list = [
+            {
+                "net_id": net2_id,
+                "use": "other",
+                "port_security": True,
+                "port_security_disable_strategy": "full",
+            }
+        ]
+        net_list_vim = []
+        mock_create_port.side_effect = [
+            (
+                {
+                    "port": {
+                        "id": port2_id,
+                        "mac_address": mac_address,
+                        "name": name,
+                    },
+                },
+                {"port-dict": port2_id},
+            ),
+        ]
+        external_network, no_secured_ports = [], []
+        expected_external_network = []
+        expected_no_secured_ports = []
+        expected_net_list_vim = [{"port-dict": port2_id}]
+        with patch.object(vimconnector, "_create_port", mock_create_port):
+            self.vimconn._prepare_network_for_vminstance(
+                name,
+                net_list,
+                created_items,
+                net_list_vim,
+                external_network,
+                no_secured_ports,
+            )
+
+        mock_create_port.assert_called_once_with(
+            {
+                "net_id": net2_id,
+                "use": "other",
+                "port_security": True,
+                "port_security_disable_strategy": "full",
+            },
+            name,
+            created_items,
+        )
+        self.assertEqual(expected_net_list_vim, net_list_vim)
+        self.assertEqual(external_network, expected_external_network)
+        self.assertEqual(expected_no_secured_ports, no_secured_ports)
+
+    @patch.object(vimconnector, "_reload_connection")
+    def test_prepare_network_for_vm_instance_create_port_raise_exception(
+        self, mock_reload_connection
+    ):
+        """_create_port method raise exception."""
+        mock_create_port = CopyingMock()
+        self.vimconn.config["use_floating_ip"] = True
+        self.vimconn.config["no_port_security_extension"] = True
+        mock_reload_connection.side_effect = None
+        created_items = {}
+
+        net_list = [
+            {
+                "net_id": net2_id,
+                "use": "other",
+                "port_security": True,
+                "port_security_disable_strategy": "full",
+            }
+        ]
+        net_list_vim = []
+        mock_create_port.side_effect = KeyError
+        external_network, no_secured_ports = [], []
+        expected_external_network = []
+        expected_no_secured_ports = []
+        expected_net_list_vim = []
+        with patch.object(vimconnector, "_create_port", mock_create_port):
+            with self.assertRaises(Exception) as err:
+                self.vimconn._prepare_network_for_vminstance(
+                    name,
+                    net_list,
+                    created_items,
+                    net_list_vim,
+                    external_network,
+                    no_secured_ports,
+                )
+
+        self.assertEqual(type(err.exception), KeyError)
+
+        mock_create_port.assert_called_once_with(
+            {
+                "net_id": net2_id,
+                "use": "other",
+                "port_security": True,
+                "port_security_disable_strategy": "full",
+            },
+            name,
+            created_items,
+        )
+        self.assertEqual(expected_net_list_vim, net_list_vim)
+        self.assertEqual(external_network, expected_external_network)
+        self.assertEqual(expected_no_secured_ports, no_secured_ports)
+
+    @patch.object(vimconnector, "_reload_connection")
+    def test_prepare_network_for_vm_instance_reload_connection_raise_exception(
+        self, mock_reload_connection
+    ):
+        """_reload_connection method raises exception."""
+        mock_create_port = CopyingMock()
+        mock_reload_connection.side_effect = VimConnConnectionException(
+            "Connection failed."
+        )
+        self.vimconn.config["use_floating_ip"] = True
+        self.vimconn.config["no_port_security_extension"] = True
+        created_items = {}
+
+        net_list = [
+            {
+                "net_id": net2_id,
+                "use": "other",
+                "port_security": True,
+                "port_security_disable_strategy": "full",
+            }
+        ]
+        net_list_vim = []
+        mock_create_port.side_effect = None
+        external_network, no_secured_ports = [], []
+        expected_external_network = []
+        expected_no_secured_ports = []
+        expected_net_list_vim = []
+        with patch.object(vimconnector, "_create_port", mock_create_port):
+            with self.assertRaises(Exception) as err:
+                self.vimconn._prepare_network_for_vminstance(
+                    name,
+                    net_list,
+                    created_items,
+                    net_list_vim,
+                    external_network,
+                    no_secured_ports,
+                )
+
+        self.assertEqual(type(err.exception), VimConnConnectionException)
+        self.assertEqual(str(err.exception), "Connection failed.")
+        mock_reload_connection.assert_called_once()
+        mock_create_port.assert_not_called()
+        self.assertEqual(expected_net_list_vim, net_list_vim)
+        self.assertEqual(external_network, expected_external_network)
+        self.assertEqual(expected_no_secured_ports, no_secured_ports)
+
+    def test_prepare_persistent_root_volumes_vim_using_volume_id(self):
+        """Existing persistent root volume with vim_volume_id."""
+        vm_av_zone = ["nova"]
+        base_disk_index = ord("a")
+        disk = {"vim_volume_id": volume_id}
+        block_device_mapping = {}
+        existing_vim_volumes = []
+        created_items = {}
+        expected_boot_vol_id = None
+        expected_block_device_mapping = {"vda": volume_id}
+        expected_existing_vim_volumes = [{"id": volume_id}]
+        boot_volume_id = self.vimconn._prepare_persistent_root_volumes(
+            name,
+            vm_av_zone,
+            disk,
+            base_disk_index,
+            block_device_mapping,
+            existing_vim_volumes,
+            created_items,
+        )
+        self.assertEqual(boot_volume_id, expected_boot_vol_id)
+        self.assertDictEqual(block_device_mapping, expected_block_device_mapping)
+        self.assertEqual(existing_vim_volumes, expected_existing_vim_volumes)
+        self.vimconn.cinder.volumes.create.assert_not_called()
+
+    @patch.object(vimconnector, "update_block_device_mapping")
+    def test_prepare_persistent_non_root_volumes_vim_using_volume_id(
+        self, mock_update_block_device_mapping
+    ):
+        """Existing persistent non root volume with vim_volume_id."""
+        vm_av_zone = ["nova"]
+        base_disk_index = ord("b")
+        disk = {"vim_volume_id": volume_id}
+        block_device_mapping = {}
+        existing_vim_volumes = []
+        created_items = {}
+        expected_block_device_mapping = {"vdb": volume_id}
+        expected_existing_vim_volumes = [{"id": volume_id}]
+        self.vimconn._prepare_non_root_persistent_volumes(
+            name,
+            disk,
+            vm_av_zone,
+            block_device_mapping,
+            base_disk_index,
+            existing_vim_volumes,
+            created_items,
+        )
+        self.assertDictEqual(block_device_mapping, expected_block_device_mapping)
+        self.assertEqual(existing_vim_volumes, expected_existing_vim_volumes)
+        self.vimconn.cinder.volumes.create.assert_not_called()
+        mock_update_block_device_mapping.assert_not_called()
+
+    @patch.object(vimconnector, "update_block_device_mapping")
+    def test_prepare_persistent_root_volumes_using_vim_id(
+        self, mock_update_block_device_mapping
+    ):
+        """Existing persistent root volume with vim_id."""
+        vm_av_zone = ["nova"]
+        base_disk_index = ord("a")
+        disk = {"vim_id": volume_id}
+        block_device_mapping = {}
+        existing_vim_volumes = []
+        created_items = {}
+        expected_boot_vol_id = None
+        expected_block_device_mapping = {"vda": volume_id}
+        expected_existing_vim_volumes = [{"id": volume_id}]
+        boot_volume_id = self.vimconn._prepare_persistent_root_volumes(
+            name,
+            vm_av_zone,
+            disk,
+            base_disk_index,
+            block_device_mapping,
+            existing_vim_volumes,
+            created_items,
+        )
+        self.assertEqual(boot_volume_id, expected_boot_vol_id)
+        self.assertDictEqual(block_device_mapping, expected_block_device_mapping)
+        self.assertEqual(existing_vim_volumes, expected_existing_vim_volumes)
+        self.vimconn.cinder.volumes.create.assert_not_called()
+        mock_update_block_device_mapping.assert_not_called()
+
+    @patch.object(vimconnector, "update_block_device_mapping")
+    def test_prepare_persistent_non_root_volumes_using_vim_id(
+        self, mock_update_block_device_mapping
+    ):
+        """Existing persistent root volume with vim_id."""
+        vm_av_zone = ["nova"]
+        base_disk_index = ord("b")
+        disk = {"vim_id": volume_id}
+        block_device_mapping = {}
+        existing_vim_volumes = []
+        created_items = {}
+
+        expected_block_device_mapping = {"vdb": volume_id}
+        expected_existing_vim_volumes = [{"id": volume_id}]
+        self.vimconn._prepare_non_root_persistent_volumes(
+            name,
+            disk,
+            vm_av_zone,
+            block_device_mapping,
+            base_disk_index,
+            existing_vim_volumes,
+            created_items,
+        )
+
+        self.assertDictEqual(block_device_mapping, expected_block_device_mapping)
+        self.assertEqual(existing_vim_volumes, expected_existing_vim_volumes)
+        self.vimconn.cinder.volumes.create.assert_not_called()
+        mock_update_block_device_mapping.assert_not_called()
+
+    @patch.object(vimconnector, "update_block_device_mapping")
+    def test_prepare_persistent_root_volumes_create(
+        self, mock_update_block_device_mapping
+    ):
+        """Create persistent root volume."""
+        self.vimconn.cinder.volumes.create.return_value.id = volume_id2
+        vm_av_zone = ["nova"]
+        base_disk_index = ord("a")
+        disk = {"size": 10, "image_id": image_id}
+        block_device_mapping = {}
+        existing_vim_volumes = []
+        created_items = {}
+        expected_boot_vol_id = volume_id2
+        boot_volume_id = self.vimconn._prepare_persistent_root_volumes(
+            name,
+            vm_av_zone,
+            disk,
+            base_disk_index,
+            block_device_mapping,
+            existing_vim_volumes,
+            created_items,
+        )
+        self.assertEqual(boot_volume_id, expected_boot_vol_id)
+        self.vimconn.cinder.volumes.create.assert_called_once_with(
+            size=10,
+            name="basicvmvda",
+            imageRef=image_id,
+            availability_zone=["nova"],
+        )
+        mock_update_block_device_mapping.assert_called_once()
+        _call_mock_update_block_device_mapping = (
+            mock_update_block_device_mapping.call_args_list
+        )
+        self.assertEqual(
+            _call_mock_update_block_device_mapping[0].kwargs["block_device_mapping"],
+            block_device_mapping,
+        )
+        self.assertEqual(
+            _call_mock_update_block_device_mapping[0].kwargs["base_disk_index"], 97
+        )
+        self.assertEqual(_call_mock_update_block_device_mapping[0].kwargs["disk"], disk)
+        self.assertEqual(
+            _call_mock_update_block_device_mapping[0].kwargs["created_items"], {}
+        )
+
+    @patch.object(vimconnector, "update_block_device_mapping")
+    def test_prepare_persistent_root_volumes_create_with_keep(
+        self, mock_update_block_device_mapping
+    ):
+        """Create persistent root volume, disk has keep parameter."""
+        self.vimconn.cinder.volumes.create.return_value.id = volume_id2
+        vm_av_zone = ["nova"]
+        base_disk_index = ord("a")
+        disk = {"size": 10, "image_id": image_id, "keep": True}
+        block_device_mapping = {}
+        existing_vim_volumes = []
+        created_items = {}
+        expected_boot_vol_id = volume_id2
+        expected_existing_vim_volumes = []
+        boot_volume_id = self.vimconn._prepare_persistent_root_volumes(
+            name,
+            vm_av_zone,
+            disk,
+            base_disk_index,
+            block_device_mapping,
+            existing_vim_volumes,
+            created_items,
+        )
+        self.assertEqual(boot_volume_id, expected_boot_vol_id)
+        self.assertEqual(existing_vim_volumes, expected_existing_vim_volumes)
+        self.vimconn.cinder.volumes.create.assert_called_once_with(
+            size=10,
+            name="basicvmvda",
+            imageRef=image_id,
+            availability_zone=["nova"],
+        )
+        mock_update_block_device_mapping.assert_called_once()
+        _call_mock_update_block_device_mapping = (
+            mock_update_block_device_mapping.call_args_list
+        )
+        self.assertEqual(
+            _call_mock_update_block_device_mapping[0].kwargs["block_device_mapping"],
+            block_device_mapping,
+        )
+        self.assertEqual(
+            _call_mock_update_block_device_mapping[0].kwargs["base_disk_index"], 97
+        )
+        self.assertEqual(_call_mock_update_block_device_mapping[0].kwargs["disk"], disk)
+        self.assertEqual(
+            _call_mock_update_block_device_mapping[0].kwargs["created_items"], {}
+        )
+
+    @patch.object(vimconnector, "update_block_device_mapping")
+    def test_prepare_persistent_non_root_volumes_create(
+        self, mock_update_block_device_mapping
+    ):
+        """Create persistent non-root volume."""
+        self.vimconn.cinder = CopyingMock()
+        self.vimconn.cinder.volumes.create.return_value.id = volume_id2
+        vm_av_zone = ["nova"]
+        base_disk_index = ord("a")
+        disk = {"size": 10}
+        block_device_mapping = {}
+        existing_vim_volumes = []
+        created_items = {}
+        expected_existing_vim_volumes = []
+        self.vimconn._prepare_non_root_persistent_volumes(
+            name,
+            disk,
+            vm_av_zone,
+            block_device_mapping,
+            base_disk_index,
+            existing_vim_volumes,
+            created_items,
+        )
+
+        self.assertEqual(existing_vim_volumes, expected_existing_vim_volumes)
+        self.vimconn.cinder.volumes.create.assert_called_once_with(
+            size=10, name="basicvmvda", availability_zone=["nova"]
+        )
+        mock_update_block_device_mapping.assert_called_once()
+        _call_mock_update_block_device_mapping = (
+            mock_update_block_device_mapping.call_args_list
+        )
+        self.assertEqual(
+            _call_mock_update_block_device_mapping[0].kwargs["block_device_mapping"],
+            block_device_mapping,
+        )
+        self.assertEqual(
+            _call_mock_update_block_device_mapping[0].kwargs["base_disk_index"], 97
+        )
+        self.assertEqual(_call_mock_update_block_device_mapping[0].kwargs["disk"], disk)
+        self.assertEqual(
+            _call_mock_update_block_device_mapping[0].kwargs["created_items"], {}
+        )
+
+    @patch.object(vimconnector, "update_block_device_mapping")
+    def test_prepare_persistent_non_root_volumes_create_with_keep(
+        self, mock_update_block_device_mapping
+    ):
+        """Create persistent non-root volume."""
+        self.vimconn.cinder = CopyingMock()
+        self.vimconn.cinder.volumes.create.return_value.id = volume_id2
+        vm_av_zone = ["nova"]
+        base_disk_index = ord("a")
+        disk = {"size": 10, "keep": True}
+        block_device_mapping = {}
+        existing_vim_volumes = []
+        created_items = {}
+        expected_existing_vim_volumes = []
+        self.vimconn._prepare_non_root_persistent_volumes(
+            name,
+            disk,
+            vm_av_zone,
+            block_device_mapping,
+            base_disk_index,
+            existing_vim_volumes,
+            created_items,
+        )
+
+        self.assertEqual(existing_vim_volumes, expected_existing_vim_volumes)
+        self.vimconn.cinder.volumes.create.assert_called_once_with(
+            size=10, name="basicvmvda", availability_zone=["nova"]
+        )
+        mock_update_block_device_mapping.assert_called_once()
+        _call_mock_update_block_device_mapping = (
+            mock_update_block_device_mapping.call_args_list
+        )
+        self.assertEqual(
+            _call_mock_update_block_device_mapping[0].kwargs["block_device_mapping"],
+            block_device_mapping,
+        )
+        self.assertEqual(
+            _call_mock_update_block_device_mapping[0].kwargs["base_disk_index"], 97
+        )
+        self.assertEqual(_call_mock_update_block_device_mapping[0].kwargs["disk"], disk)
+        self.assertEqual(
+            _call_mock_update_block_device_mapping[0].kwargs["created_items"], {}
+        )
+
+    @patch.object(vimconnector, "update_block_device_mapping")
+    def test_prepare_persistent_root_volumes_create_raise_exception(
+        self, mock_update_block_device_mapping
+    ):
+        """Create persistent root volume raise exception."""
+        self.vimconn.cinder.volumes.create.side_effect = Exception
+        vm_av_zone = ["nova"]
+        base_disk_index = ord("a")
+        disk = {"size": 10, "image_id": image_id}
+        block_device_mapping = {}
+        existing_vim_volumes = []
+        created_items = {}
+
+        with self.assertRaises(Exception):
+            result = self.vimconn._prepare_persistent_root_volumes(
+                name,
+                vm_av_zone,
+                disk,
+                base_disk_index,
+                block_device_mapping,
+                existing_vim_volumes,
+                created_items,
+            )
+
+            self.assertEqual(result, None)
+
+        self.vimconn.cinder.volumes.create.assert_called_once_with(
+            size=10,
+            name="basicvmvda",
+            imageRef=image_id,
+            availability_zone=["nova"],
+        )
+        self.assertEqual(existing_vim_volumes, [])
+        self.assertEqual(block_device_mapping, {})
+        self.assertEqual(created_items, {})
+        mock_update_block_device_mapping.assert_not_called()
+
+    @patch.object(vimconnector, "update_block_device_mapping")
+    def test_prepare_persistent_non_root_volumes_create_raise_exception(
+        self, mock_update_block_device_mapping
+    ):
+        """Create persistent non-root volume raise exception."""
+        self.vimconn.cinder.volumes.create.side_effect = Exception
+        vm_av_zone = ["nova"]
+        base_disk_index = ord("b")
+        disk = {"size": 10}
+        block_device_mapping = {}
+        existing_vim_volumes = []
+        created_items = {}
+
+        with self.assertRaises(Exception):
+            self.vimconn._prepare_non_root_persistent_volumes(
+                name,
+                disk,
+                vm_av_zone,
+                block_device_mapping,
+                base_disk_index,
+                existing_vim_volumes,
+                created_items,
+            )
+
+        self.vimconn.cinder.volumes.create.assert_called_once_with(
+            size=10, name="basicvmvdb", availability_zone=["nova"]
+        )
+        self.assertEqual(existing_vim_volumes, [])
+        self.assertEqual(block_device_mapping, {})
+        self.assertEqual(created_items, {})
+        mock_update_block_device_mapping.assert_not_called()
+
+    @patch("time.sleep")
+    def test_wait_for_created_volumes_availability_volume_status_available(
+        self, mock_sleep
+    ):
+        """Created volume status is available."""
+        elapsed_time = 5
+        created_items = {f"volume:{volume_id2}": True}
+        self.vimconn.cinder.volumes.get.return_value.status = "available"
+
+        result = self.vimconn._wait_for_created_volumes_availability(
+            elapsed_time, created_items
+        )
+        self.assertEqual(result, elapsed_time)
+        self.vimconn.cinder.volumes.get.assert_called_with(volume_id2)
+        mock_sleep.assert_not_called()
+
+    @patch("time.sleep")
+    def test_wait_for_existing_volumes_availability_volume_status_available(
+        self, mock_sleep
+    ):
+        """Existing volume status is available."""
+        elapsed_time = 5
+        existing_vim_volumes = [{"id": volume_id2}]
+        self.vimconn.cinder.volumes.get.return_value.status = "available"
+
+        result = self.vimconn._wait_for_existing_volumes_availability(
+            elapsed_time, existing_vim_volumes
+        )
+        self.assertEqual(result, elapsed_time)
+        self.vimconn.cinder.volumes.get.assert_called_with(volume_id2)
+        mock_sleep.assert_not_called()
+
+    @patch("time.sleep")
+    def test_wait_for_created_volumes_availability_status_processing_multiple_volumes(
+        self, mock_sleep
+    ):
+        """Created volume status is processing."""
+        elapsed_time = 5
+        created_items = {
+            f"volume:{volume_id2}": True,
+            f"volume:{volume_id3}": True,
+        }
+        self.vimconn.cinder.volumes.get.side_effect = [
+            Status("processing"),
+            Status("available"),
+            Status("available"),
+        ]
+
+        result = self.vimconn._wait_for_created_volumes_availability(
+            elapsed_time, created_items
+        )
+        self.assertEqual(result, 10)
+        _call_mock_get_volumes = self.vimconn.cinder.volumes.get.call_args_list
+        self.assertEqual(_call_mock_get_volumes[0][0], (volume_id2,))
+        self.assertEqual(_call_mock_get_volumes[1][0], (volume_id2,))
+        self.assertEqual(_call_mock_get_volumes[2][0], (volume_id3,))
+        mock_sleep.assert_called_with(5)
+        self.assertEqual(1, mock_sleep.call_count)
+
+    @patch("time.sleep")
+    def test_wait_for_existing_volumes_availability_status_processing_multiple_volumes(
+        self, mock_sleep
+    ):
+        """Existing volume status is processing."""
+        elapsed_time = 5
+        existing_vim_volumes = [
+            {"id": volume_id2},
+            {"id": "44e0e83-b9uu-4akk-t234-p9cc4811bd4a"},
+        ]
+        self.vimconn.cinder.volumes.get.side_effect = [
+            Status("processing"),
+            Status("available"),
+            Status("available"),
+        ]
+
+        result = self.vimconn._wait_for_existing_volumes_availability(
+            elapsed_time, existing_vim_volumes
+        )
+        self.assertEqual(result, 10)
+        _call_mock_get_volumes = self.vimconn.cinder.volumes.get.call_args_list
+        self.assertEqual(_call_mock_get_volumes[0][0], (volume_id2,))
+        self.assertEqual(_call_mock_get_volumes[1][0], (volume_id2,))
+        self.assertEqual(
+            _call_mock_get_volumes[2][0], ("44e0e83-b9uu-4akk-t234-p9cc4811bd4a",)
+        )
+        mock_sleep.assert_called_with(5)
+        self.assertEqual(1, mock_sleep.call_count)
+
+    @patch("time.sleep")
+    def test_wait_for_created_volumes_availability_volume_status_processing_timeout(
+        self, mock_sleep
+    ):
+        """Created volume status is processing, elapsed time greater than timeout (1800)."""
+        elapsed_time = 1805
+        created_items = {f"volume:{volume_id2}": True}
+        self.vimconn.cinder.volumes.get.side_effect = [
+            Status("processing"),
+            Status("processing"),
+        ]
+        with patch("time.sleep", mock_sleep):
+            result = self.vimconn._wait_for_created_volumes_availability(
+                elapsed_time, created_items
+            )
+            self.assertEqual(result, 1805)
+        self.vimconn.cinder.volumes.get.assert_not_called()
+        mock_sleep.assert_not_called()
+
+    @patch("time.sleep")
+    def test_wait_for_existing_volumes_availability_volume_status_processing_timeout(
+        self, mock_sleep
+    ):
+        """Exsiting volume status is processing, elapsed time greater than timeout (1800)."""
+        elapsed_time = 1805
+        existing_vim_volumes = [{"id": volume_id2}]
+        self.vimconn.cinder.volumes.get.side_effect = [
+            Status("processing"),
+            Status("processing"),
+        ]
+
+        result = self.vimconn._wait_for_existing_volumes_availability(
+            elapsed_time, existing_vim_volumes
+        )
+        self.assertEqual(result, 1805)
+        self.vimconn.cinder.volumes.get.assert_not_called()
+        mock_sleep.assert_not_called()
+
+    @patch("time.sleep")
+    def test_wait_for_created_volumes_availability_cinder_raise_exception(
+        self, mock_sleep
+    ):
+        """Cinder get volumes raises exception for created volumes."""
+        elapsed_time = 1000
+        created_items = {f"volume:{volume_id2}": True}
+        self.vimconn.cinder.volumes.get.side_effect = Exception
+        with self.assertRaises(Exception):
+            result = self.vimconn._wait_for_created_volumes_availability(
+                elapsed_time, created_items
+            )
+            self.assertEqual(result, 1000)
+        self.vimconn.cinder.volumes.get.assert_called_with(volume_id2)
+        mock_sleep.assert_not_called()
+
+    @patch("time.sleep")
+    def test_wait_for_existing_volumes_availability_cinder_raise_exception(
+        self, mock_sleep
+    ):
+        """Cinder get volumes raises exception for existing volumes."""
+        elapsed_time = 1000
+        existing_vim_volumes = [{"id": volume_id2}]
+        self.vimconn.cinder.volumes.get.side_effect = Exception
+        with self.assertRaises(Exception):
+            result = self.vimconn._wait_for_existing_volumes_availability(
+                elapsed_time, existing_vim_volumes
+            )
+            self.assertEqual(result, 1000)
+        self.vimconn.cinder.volumes.get.assert_called_with(volume_id2)
+        mock_sleep.assert_not_called()
+
+    @patch("time.sleep")
+    def test_wait_for_created_volumes_availability_no_volume_in_created_items(
+        self, mock_sleep
+    ):
+        """Created_items dict does not have volume-id."""
+        elapsed_time = 10
+        created_items = {}
+
+        self.vimconn.cinder.volumes.get.side_effect = [None]
+
+        result = self.vimconn._wait_for_created_volumes_availability(
+            elapsed_time, created_items
+        )
+        self.assertEqual(result, 10)
+        self.vimconn.cinder.volumes.get.assert_not_called()
+        mock_sleep.assert_not_called()
+
+    @patch("time.sleep")
+    def test_wait_for_existing_volumes_availability_no_volume_in_existing_vim_volumes(
+        self, mock_sleep
+    ):
+        """Existing_vim_volumes list does not have volume."""
+        elapsed_time = 10
+        existing_vim_volumes = []
+
+        self.vimconn.cinder.volumes.get.side_effect = [None]
+
+        result = self.vimconn._wait_for_existing_volumes_availability(
+            elapsed_time, existing_vim_volumes
+        )
+        self.assertEqual(result, 10)
+        self.vimconn.cinder.volumes.get.assert_not_called()
+        mock_sleep.assert_not_called()
+
+    @patch.object(vimconnector, "_prepare_persistent_root_volumes")
+    @patch.object(vimconnector, "_prepare_non_root_persistent_volumes")
+    @patch.object(vimconnector, "_wait_for_created_volumes_availability")
+    @patch.object(vimconnector, "_wait_for_existing_volumes_availability")
+    def test_prepare_disk_for_vm_instance(
+        self,
+        mock_existing_vol_availability,
+        mock_created_vol_availability,
+        mock_non_root_volumes,
+        mock_root_volumes,
+    ):
+        """Prepare disks for VM instance successfully."""
+        existing_vim_volumes = []
+        created_items = {}
+        block_device_mapping = {}
+        vm_av_zone = ["nova"]
+
+        mock_root_volumes.return_value = root_vol_id
+        mock_created_vol_availability.return_value = 10
+        mock_existing_vol_availability.return_value = 15
+        self.vimconn.cinder = CopyingMock()
+        self.vimconn._prepare_disk_for_vminstance(
+            name,
+            existing_vim_volumes,
+            created_items,
+            vm_av_zone,
+            block_device_mapping,
+            disk_list2,
+        )
+        self.vimconn.cinder.volumes.set_bootable.assert_called_once_with(
+            root_vol_id, True
+        )
+        mock_created_vol_availability.assert_called_once_with(0, created_items)
+        mock_existing_vol_availability.assert_called_once_with(10, existing_vim_volumes)
+        self.assertEqual(mock_root_volumes.call_count, 1)
+        self.assertEqual(mock_non_root_volumes.call_count, 1)
+        mock_root_volumes.assert_called_once_with(
+            name="basicvm",
+            vm_av_zone=["nova"],
+            disk={"size": 10, "image_id": image_id},
+            base_disk_index=97,
+            block_device_mapping={},
+            existing_vim_volumes=[],
+            created_items={},
+        )
+        mock_non_root_volumes.assert_called_once_with(
+            name="basicvm",
+            disk={"size": 20},
+            vm_av_zone=["nova"],
+            base_disk_index=98,
+            block_device_mapping={},
+            existing_vim_volumes=[],
+            created_items={},
+        )
+
+    @patch.object(vimconnector, "_prepare_persistent_root_volumes")
+    @patch.object(vimconnector, "_prepare_non_root_persistent_volumes")
+    @patch.object(vimconnector, "_wait_for_created_volumes_availability")
+    @patch.object(vimconnector, "_wait_for_existing_volumes_availability")
+    def test_prepare_disk_for_vm_instance_timeout_exceeded(
+        self,
+        mock_existing_vol_availability,
+        mock_created_vol_availability,
+        mock_non_root_volumes,
+        mock_root_volumes,
+    ):
+        """Timeout exceeded while waiting for disks."""
+        existing_vim_volumes = []
+        created_items = {}
+        vm_av_zone = ["nova"]
+        block_device_mapping = {}
+
+        mock_root_volumes.return_value = root_vol_id
+        mock_created_vol_availability.return_value = 1700
+        mock_existing_vol_availability.return_value = 1900
+
+        with self.assertRaises(VimConnException) as err:
+            self.vimconn._prepare_disk_for_vminstance(
+                name,
+                existing_vim_volumes,
+                created_items,
+                vm_av_zone,
+                block_device_mapping,
+                disk_list2,
+            )
+        self.assertEqual(
+            str(err.exception), "Timeout creating volumes for instance basicvm"
+        )
+        self.vimconn.cinder.volumes.set_bootable.assert_not_called()
+        mock_created_vol_availability.assert_called_once_with(0, created_items)
+        mock_existing_vol_availability.assert_called_once_with(
+            1700, existing_vim_volumes
+        )
+        self.assertEqual(mock_root_volumes.call_count, 1)
+        self.assertEqual(mock_non_root_volumes.call_count, 1)
+        mock_root_volumes.assert_called_once_with(
+            name="basicvm",
+            vm_av_zone=["nova"],
+            disk={"size": 10, "image_id": image_id},
+            base_disk_index=97,
+            block_device_mapping={},
+            existing_vim_volumes=[],
+            created_items={},
+        )
+        mock_non_root_volumes.assert_called_once_with(
+            name="basicvm",
+            disk={"size": 20},
+            vm_av_zone=["nova"],
+            base_disk_index=98,
+            block_device_mapping={},
+            existing_vim_volumes=[],
+            created_items={},
+        )
+
+    @patch.object(vimconnector, "_prepare_persistent_root_volumes")
+    @patch.object(vimconnector, "_prepare_non_root_persistent_volumes")
+    @patch.object(vimconnector, "_wait_for_created_volumes_availability")
+    @patch.object(vimconnector, "_wait_for_existing_volumes_availability")
+    def test_prepare_disk_for_vm_instance_empty_disk_list(
+        self,
+        mock_existing_vol_availability,
+        mock_created_vol_availability,
+        mock_non_root_volumes,
+        mock_root_volumes,
+    ):
+        """Disk list is empty."""
+        existing_vim_volumes = []
+        created_items = {}
+        block_device_mapping = {}
+        vm_av_zone = ["nova"]
+        mock_created_vol_availability.return_value = 2
+        mock_existing_vol_availability.return_value = 3
+
+        self.vimconn._prepare_disk_for_vminstance(
+            name,
+            existing_vim_volumes,
+            created_items,
+            vm_av_zone,
+            block_device_mapping,
+            disk_list,
+        )
+        self.vimconn.cinder.volumes.set_bootable.assert_not_called()
+        mock_created_vol_availability.assert_called_once_with(0, created_items)
+        mock_existing_vol_availability.assert_called_once_with(2, existing_vim_volumes)
+        mock_root_volumes.assert_not_called()
+        mock_non_root_volumes.assert_not_called()
+
+    @patch.object(vimconnector, "_prepare_persistent_root_volumes")
+    @patch.object(vimconnector, "_prepare_non_root_persistent_volumes")
+    @patch.object(vimconnector, "_wait_for_created_volumes_availability")
+    @patch.object(vimconnector, "_wait_for_existing_volumes_availability")
+    def test_prepare_disk_for_vm_instance_persistent_root_volume_error(
+        self,
+        mock_existing_vol_availability,
+        mock_created_vol_availability,
+        mock_non_root_volumes,
+        mock_root_volumes,
+    ):
+        """Persistent root volumes preparation raises error."""
+        existing_vim_volumes = []
+        created_items = {}
+        vm_av_zone = ["nova"]
+        block_device_mapping = {}
+
+        mock_root_volumes.side_effect = Exception()
+        mock_created_vol_availability.return_value = 10
+        mock_existing_vol_availability.return_value = 15
+
+        with self.assertRaises(Exception):
+            self.vimconn._prepare_disk_for_vminstance(
+                name,
+                existing_vim_volumes,
+                created_items,
+                vm_av_zone,
+                block_device_mapping,
+                disk_list2,
+            )
+        self.vimconn.cinder.volumes.set_bootable.assert_not_called()
+        mock_created_vol_availability.assert_not_called()
+        mock_existing_vol_availability.assert_not_called()
+        mock_root_volumes.assert_called_once_with(
+            name="basicvm",
+            vm_av_zone=["nova"],
+            disk={"size": 10, "image_id": image_id},
+            base_disk_index=97,
+            block_device_mapping={},
+            existing_vim_volumes=[],
+            created_items={},
+        )
+        mock_non_root_volumes.assert_not_called()
+
+    @patch.object(vimconnector, "_prepare_persistent_root_volumes")
+    @patch.object(vimconnector, "_prepare_non_root_persistent_volumes")
+    @patch.object(vimconnector, "_wait_for_created_volumes_availability")
+    @patch.object(vimconnector, "_wait_for_existing_volumes_availability")
+    def test_prepare_disk_for_vm_instance_non_root_volume_error(
+        self,
+        mock_existing_vol_availability,
+        mock_created_vol_availability,
+        mock_non_root_volumes,
+        mock_root_volumes,
+    ):
+        """Non-root volumes preparation raises error."""
+        existing_vim_volumes = []
+        created_items = {}
+        vm_av_zone = ["nova"]
+        block_device_mapping = {}
+
+        mock_root_volumes.return_value = root_vol_id
+        mock_non_root_volumes.side_effect = Exception
+
+        with self.assertRaises(Exception):
+            self.vimconn._prepare_disk_for_vminstance(
+                name,
+                existing_vim_volumes,
+                created_items,
+                vm_av_zone,
+                block_device_mapping,
+                disk_list2,
+            )
+        self.vimconn.cinder.volumes.set_bootable.assert_not_called()
+        mock_created_vol_availability.assert_not_called()
+        mock_existing_vol_availability.assert_not_called()
+        self.assertEqual(mock_root_volumes.call_count, 1)
+        self.assertEqual(mock_non_root_volumes.call_count, 1)
+        mock_root_volumes.assert_called_once_with(
+            name="basicvm",
+            vm_av_zone=["nova"],
+            disk={"size": 10, "image_id": image_id},
+            base_disk_index=97,
+            block_device_mapping={},
+            existing_vim_volumes=[],
+            created_items={},
+        )
+        mock_non_root_volumes.assert_called_once_with(
+            name="basicvm",
+            disk={"size": 20},
+            vm_av_zone=["nova"],
+            base_disk_index=98,
+            block_device_mapping={},
+            existing_vim_volumes=[],
+            created_items={},
+        )
+
+    def test_find_external_network_for_floating_ip_no_external_network(self):
+        """External network could not be found."""
+        self.vimconn.neutron.list_networks.return_value = {
+            "networks": [
+                {"id": "408b73-r9cc-5a6a-a270-82cc4811bd4a", "router:external": False}
+            ]
+        }
+        with self.assertRaises(VimConnException) as err:
+            self.vimconn._find_the_external_network_for_floating_ip()
+        self.assertEqual(
+            str(err.exception),
+            "Cannot create floating_ip automatically since no external network is present",
+        )
+
+    def test_find_external_network_for_floating_one_external_network(self):
+        """One external network has been found."""
+        self.vimconn.neutron.list_networks.return_value = {
+            "networks": [
+                {"id": "408b73-r9cc-5a6a-a270-82cc4811bd4a", "router:external": True}
+            ]
+        }
+        expected_result = "408b73-r9cc-5a6a-a270-82cc4811bd4a"
+        result = self.vimconn._find_the_external_network_for_floating_ip()
+        self.assertEqual(result, expected_result)
+
+    def test_find_external_network_for_floating_neutron_raises_exception(self):
+        """Neutron list networks raises exception."""
+        self.vimconn.neutron.list_networks.side_effect = Exception
+        with self.assertRaises(Exception):
+            self.vimconn._find_the_external_network_for_floating_ip()
+
+    def test_find_external_network_for_floating_several_external_network(self):
+        """Several exernal networks has been found."""
+        self.vimconn.neutron.list_networks.return_value = {
+            "networks": [
+                {"id": "408b73-r9cc-5a6a-a270-82cc4811bd4a", "router:external": True},
+                {"id": "608b73-y9cc-5a6a-a270-12cc4811bd4a", "router:external": True},
+            ]
+        }
+        with self.assertRaises(VimConnException) as err:
+            self.vimconn._find_the_external_network_for_floating_ip()
+        self.assertEqual(
+            str(err.exception),
+            "Cannot create floating_ip automatically since multiple external networks are present",
+        )
+
+    def test_neutron_create_float_ip(self):
+        """Floating ip creation is successful."""
+        param = {"net_id": "408b73-r9cc-5a6a-a270-p2cc4811bd9a"}
+        created_items = {}
+        self.vimconn.neutron.create_floatingip.return_value = {
+            "floatingip": {"id": "308b73-t9cc-1a6a-a270-12cc4811bd4a"}
+        }
+        expected_created_items = {
+            "floating_ip:308b73-t9cc-1a6a-a270-12cc4811bd4a": True
+        }
+        self.vimconn._neutron_create_float_ip(param, created_items)
+        self.assertEqual(created_items, expected_created_items)
+
+    def test_neutron_create_float_ip_exception_occurred(self):
+        """Floating ip could not be created."""
+        param = {
+            "floatingip": {
+                "floating_network_id": "408b73-r9cc-5a6a-a270-p2cc4811bd9a",
+                "tenant_id": "308b73-19cc-8a6a-a270-02cc4811bd9a",
+            }
+        }
+        created_items = {}
+        self.vimconn.neutron = CopyingMock()
+        self.vimconn.neutron.create_floatingip.side_effect = Exception(
+            "Neutron floating ip create exception occurred."
+        )
+        with self.assertRaises(VimConnException) as err:
+            self.vimconn._neutron_create_float_ip(param, created_items)
+        self.assertEqual(created_items, {})
+        self.assertEqual(
+            str(err.exception),
+            "Exception: Cannot create new floating_ip Neutron floating ip create exception occurred.",
+        )
+
+    @patch.object(vimconnector, "_neutron_create_float_ip")
+    @patch.object(vimconnector, "_find_the_external_network_for_floating_ip")
+    def test_create_floating_ip_pool_id_available(
+        self, mock_find_ext_network, mock_create_float_ip
+    ):
+        """Floating ip creation, ip pool is available."""
+        floating_network = {"floating_ip": "308b73-t9cc-1a6a-a270-12cc4811bd4a"}
+        created_items = {}
+        expected_param = {
+            "floatingip": {
+                "floating_network_id": "308b73-t9cc-1a6a-a270-12cc4811bd4a",
+                "tenant_id": "408b73-r9cc-5a6a-a270-82cc4811bd4a",
+            }
+        }
+        self.vimconn._create_floating_ip(floating_network, self.server, created_items)
+        mock_find_ext_network.assert_not_called()
+        mock_create_float_ip.assert_called_once_with(expected_param, {})
+
+    @patch.object(vimconnector, "_neutron_create_float_ip")
+    @patch.object(vimconnector, "_find_the_external_network_for_floating_ip")
+    def test_create_floating_ip_finding_pool_id(
+        self, mock_find_ext_network, mock_create_float_ip
+    ):
+        """Floating ip creation, pool id need to be found."""
+        floating_network = {"floating_ip": True}
+        created_items = {}
+        mock_find_ext_network.return_value = "308b73-t9cc-1a6a-a270-12cc4811bd4a"
+        expected_param = {
+            "floatingip": {
+                "floating_network_id": "308b73-t9cc-1a6a-a270-12cc4811bd4a",
+                "tenant_id": "408b73-r9cc-5a6a-a270-82cc4811bd4a",
+            }
+        }
+        self.vimconn._create_floating_ip(floating_network, self.server, created_items)
+        mock_find_ext_network.assert_called_once()
+        mock_create_float_ip.assert_called_once_with(expected_param, {})
+
+    @patch.object(vimconnector, "_neutron_create_float_ip")
+    @patch.object(vimconnector, "_find_the_external_network_for_floating_ip")
+    def test_create_floating_ip_neutron_create_floating_ip_exception(
+        self, mock_find_ext_network, mock_create_float_ip
+    ):
+        """Neutron creat floating ip raises error."""
+        floating_network = {"floating_ip": True}
+        created_items = {}
+        mock_create_float_ip.side_effect = VimConnException(
+            "Can not create floating ip."
+        )
+        mock_find_ext_network.return_value = "308b73-t9cc-1a6a-a270-12cc4811bd4a"
+        expected_param = {
+            "floatingip": {
+                "floating_network_id": "308b73-t9cc-1a6a-a270-12cc4811bd4a",
+                "tenant_id": "408b73-r9cc-5a6a-a270-82cc4811bd4a",
+            }
+        }
+
+        with self.assertRaises(VimConnException) as err:
+            self.vimconn._create_floating_ip(
+                floating_network, self.server, created_items
+            )
+        self.assertEqual(str(err.exception), "Can not create floating ip.")
+        mock_find_ext_network.assert_called_once()
+        mock_create_float_ip.assert_called_once_with(expected_param, {})
+
+    @patch.object(vimconnector, "_neutron_create_float_ip")
+    @patch.object(vimconnector, "_find_the_external_network_for_floating_ip")
+    def test_create_floating_ip_can_not_find_pool_id(
+        self, mock_find_ext_network, mock_create_float_ip
+    ):
+        """Floating ip creation, pool id could not be found."""
+        floating_network = {"floating_ip": True}
+        created_items = {}
+        mock_find_ext_network.side_effect = VimConnException(
+            "Cannot create floating_ip automatically since no external network is present"
+        )
+        with self.assertRaises(VimConnException) as err:
+            self.vimconn._create_floating_ip(
+                floating_network, self.server, created_items
+            )
+        self.assertEqual(
+            str(err.exception),
+            "Cannot create floating_ip automatically since no external network is present",
+        )
+        mock_find_ext_network.assert_called_once()
+        mock_create_float_ip.assert_not_called()
+
+    def test_find_floating_ip_get_free_floating_ip(self):
+        """Get free floating ips successfully."""
+        floating_ips = [
+            {
+                "tenant_id": "408b73-r9cc-5a6a-a270-82cc4811bd4a",
+                "floating_network_id": "308b73-t9cc-1a6a-a270-12cc4811bd4a",
+                "id": "508b73-o9cc-5a6a-a270-72cc4811bd8",
+            }
+        ]
+        floating_network = {"floating_ip": "308b73-t9cc-1a6a-a270-12cc4811bd4a"}
+        expected_result = "508b73-o9cc-5a6a-a270-72cc4811bd8"
+
+        result = self.vimconn._find_floating_ip(
+            self.server, floating_ips, floating_network
+        )
+        self.assertEqual(result, expected_result)
+
+    def test_find_floating_ip_different_floating_network_id(self):
+        """Floating network id is different with floating_ip of floating network."""
+        floating_ips = [
+            {
+                "floating_network_id": "308b73-t9cc-1a6a-a270-12cc4811bd4a",
+                "id": "508b73-o9cc-5a6a-a270-72cc4811bd8",
+            }
+        ]
+        floating_network = {"floating_ip": "508b73-t9cc-1a6a-a270-12cc4811bd4a"}
+
+        result = self.vimconn._find_floating_ip(
+            self.server, floating_ips, floating_network
+        )
+        self.assertEqual(result, None)
+
+    def test_find_floating_ip_different_fip_tenant(self):
+        """Items in floating_ips has port_id, tenant_is is not same with server tenant id."""
+        floating_ips = [
+            {
+                "port_id": "608b73-r9cc-5a6a-a270-82cc4811bd4a",
+                "floating_network_id": "308b73-t9cc-1a6a-a270-12cc4811bd4a",
+                "id": "508b73-o9cc-5a6a-a270-72cc4811bd8",
+                "tenant_id": self.server.id,
+            }
+        ]
+        floating_network = {"floating_ip": "308b73-t9cc-1a6a-a270-12cc4811bd4a"}
+        mock_create_floating_ip = CopyingMock()
+        with patch.object(vimconnector, "_create_floating_ip", mock_create_floating_ip):
+            result = self.vimconn._find_floating_ip(
+                self.server, floating_ips, floating_network
+            )
+            self.assertEqual(result, None)
+
+    @patch("time.sleep")
+    def test_assign_floating_ip(self, mock_sleep):
+        """Assign floating ip successfully."""
+        free_floating_ip = "508b73-o9cc-5a6a-a270-72cc4811bd8"
+        floating_network = {"vim_id": floating_network_vim_id}
+        fip = {
+            "port_id": floating_network_vim_id,
+            "floating_network_id": "p08b73-e9cc-5a6a-t270-82cc4811bd4a",
+            "id": "508b73-o9cc-5a6a-a270-72cc4811bd8",
+            "tenant_id": "k08b73-e9cc-5a6a-t270-82cc4811bd4a",
+        }
+        self.vimconn.neutron.update_floatingip.side_effect = None
+        self.vimconn.neutron.show_floatingip.return_value = fip
+        expected_result = fip
+
+        result = self.vimconn._assign_floating_ip(free_floating_ip, floating_network)
+        self.assertEqual(result, expected_result)
+        self.vimconn.neutron.update_floatingip.assert_called_once_with(
+            free_floating_ip,
+            {"floatingip": {"port_id": floating_network_vim_id}},
+        )
+        mock_sleep.assert_called_once_with(5)
+        self.vimconn.neutron.show_floatingip.assert_called_once_with(free_floating_ip)
+
+    @patch("time.sleep")
+    def test_assign_floating_ip_update_floating_ip_exception(self, mock_sleep):
+        """Neutron update floating ip raises exception."""
+        free_floating_ip = "508b73-o9cc-5a6a-a270-72cc4811bd8"
+        floating_network = {"vim_id": floating_network_vim_id}
+        self.vimconn.neutron = CopyingMock()
+        self.vimconn.neutron.update_floatingip.side_effect = Exception(
+            "Floating ip is not updated."
+        )
+
+        with self.assertRaises(Exception) as err:
+            result = self.vimconn._assign_floating_ip(
+                free_floating_ip, floating_network
+            )
+            self.assertEqual(result, None)
+        self.assertEqual(str(err.exception), "Floating ip is not updated.")
+
+        self.vimconn.neutron.update_floatingip.assert_called_once_with(
+            free_floating_ip,
+            {"floatingip": {"port_id": floating_network_vim_id}},
+        )
+        mock_sleep.assert_not_called()
+        self.vimconn.neutron.show_floatingip.assert_not_called()
+
+    @patch("time.sleep")
+    def test_assign_floating_ip_show_floating_ip_exception(self, mock_sleep):
+        """Neutron show floating ip raises exception."""
+        free_floating_ip = "508b73-o9cc-5a6a-a270-72cc4811bd8"
+        floating_network = {"vim_id": floating_network_vim_id}
+        self.vimconn.neutron.update_floatingip.side_effect = None
+        self.vimconn.neutron.show_floatingip.side_effect = Exception(
+            "Floating ip could not be shown."
+        )
+
+        with self.assertRaises(Exception) as err:
+            result = self.vimconn._assign_floating_ip(
+                free_floating_ip, floating_network
+            )
+            self.assertEqual(result, None)
+            self.assertEqual(str(err.exception), "Floating ip could not be shown.")
+        self.vimconn.neutron.update_floatingip.assert_called_once_with(
+            free_floating_ip,
+            {"floatingip": {"port_id": floating_network_vim_id}},
+        )
+        mock_sleep.assert_called_once_with(5)
+        self.vimconn.neutron.show_floatingip.assert_called_once_with(free_floating_ip)
+
+    @patch("random.shuffle")
+    @patch.object(vimconnector, "_find_floating_ip")
+    def test_get_free_floating_ip(self, mock_find_floating_ip, mock_shuffle):
+        """Get free floating ip successfully."""
+        floating_network = {"floating_ip": "308b73-t9cc-1a6a-a270-12cc4811bd4a"}
+        floating_ips = [
+            {
+                "port_id": "608b73-r9cc-5a6a-a270-82cc4811bd4a",
+                "floating_network_id": "308b73-t9cc-1a6a-a270-12cc4811bd4a",
+                "id": "508b73-o9cc-5a6a-a270-72cc4811bd8",
+                "tenant_id": "208b73-e9cc-5a6a-t270-82cc4811bd4a",
+            },
+            {
+                "port_id": "508b73-r9cc-5a6a-5270-o2cc4811bd4a",
+                "floating_network_id": "308b73-t9cc-1a6a-a270-12cc4811bd4a",
+                "id": "208b73-o9cc-5a6a-a270-52cc4811bd8",
+                "tenant_id": "208b73-e9cc-5a6a-t270-82cc4811bd4a",
+            },
+        ]
+        self.vimconn.neutron.list_floatingips.return_value = {
+            "floatingips": floating_ips
+        }
+        mock_find_floating_ip.return_value = "508b73-o9cc-5a6a-a270-72cc4811bd8"
+        expected_result = "508b73-o9cc-5a6a-a270-72cc4811bd8"
+
+        result = self.vimconn._get_free_floating_ip(self.server, floating_network)
+        self.assertEqual(result, expected_result)
+        mock_shuffle.assert_called_once_with(floating_ips)
+        mock_find_floating_ip.assert_called_once_with(
+            self.server, floating_ips, floating_network
+        )
+
+    @patch("random.shuffle")
+    @patch.object(vimconnector, "_find_floating_ip")
+    def test_get_free_floating_ip_list_floating_ip_exception(
+        self, mock_find_floating_ip, mock_shuffle
+    ):
+        """Neutron list floating IPs raises exception."""
+        floating_network = {"floating_ip": "308b73-t9cc-1a6a-a270-12cc4811bd4a"}
+        self.vimconn.neutron = CopyingMock()
+        self.vimconn.neutron.list_floatingips.side_effect = Exception(
+            "Floating ips could not be listed."
+        )
+        with self.assertRaises(Exception) as err:
+            result = self.vimconn._get_free_floating_ip(self.server, floating_network)
+            self.assertEqual(result, None)
+            self.assertEqual(str(err.exception), "Floating ips could not be listed.")
+        mock_shuffle.assert_not_called()
+        mock_find_floating_ip.assert_not_called()
+
+    @patch("random.shuffle")
+    @patch.object(vimconnector, "_find_floating_ip")
+    def test_get_free_floating_ip_find_floating_ip_exception(
+        self, mock_find_floating_ip, mock_shuffle
+    ):
+        """_find_floating_ip method raises exception."""
+        floating_network = {"floating_ip": "308b73-t9cc-1a6a-a270-12cc4811bd4a"}
+        floating_ips = [
+            {
+                "port_id": "608b73-r9cc-5a6a-a270-82cc4811bd4a",
+                "floating_network_id": "308b73-t9cc-1a6a-a270-12cc4811bd4a",
+                "id": "508b73-o9cc-5a6a-a270-72cc4811bd8",
+                "tenant_id": "208b73-e9cc-5a6a-t270-82cc4811bd4a",
+            },
+            {
+                "port_id": "508b73-r9cc-5a6a-5270-o2cc4811bd4a",
+                "floating_network_id": "308b73-t9cc-1a6a-a270-12cc4811bd4a",
+                "id": "208b73-o9cc-5a6a-a270-52cc4811bd8",
+                "tenant_id": "208b73-e9cc-5a6a-t270-82cc4811bd4a",
+            },
+        ]
+        self.vimconn.neutron = CopyingMock()
+        self.vimconn.neutron.list_floatingips.return_value = {
+            "floatingips": floating_ips
+        }
+        mock_find_floating_ip.side_effect = Exception(
+            "Free floating ip could not be found."
+        )
+
+        with self.assertRaises(Exception) as err:
+            result = self.vimconn._get_free_floating_ip(self.server, floating_network)
+            self.assertEqual(result, None)
+            self.assertEqual(str(err.exception), "Free floating ip could not be found.")
+        mock_shuffle.assert_called_once_with(floating_ips)
+        mock_find_floating_ip.assert_called_once_with(
+            self.server, floating_ips, floating_network
+        )
+
+    @patch.object(vimconnector, "_create_floating_ip")
+    @patch.object(vimconnector, "_get_free_floating_ip")
+    @patch.object(vimconnector, "_assign_floating_ip")
+    def test_prepare_external_network_for_vm_instance(
+        self,
+        mock_assign_floating_ip,
+        mock_get_free_floating_ip,
+        mock_create_floating_ip,
+    ):
+        """Prepare external network successfully."""
+        external_network = [
+            {
+                "floating_ip": "y08b73-o9cc-1a6a-a270-12cc4811bd4u",
+                "vim_id": "608b73-r9cc-5a6a-a270-82cc4811bd4a",
+            },
+        ]
+        created_items = {}
+        vm_start_time = time_return_value
+        mock_get_free_floating_ip.side_effect = ["y08b73-o9cc-1a6a-a270-12cc4811bd4u"]
+        mock_assign_floating_ip.return_value = {
+            "floatingip": {"port_id": "608b73-r9cc-5a6a-a270-82cc4811bd4a"}
+        }
+        self.vimconn.neutron = CopyingMock()
+        self.vimconn.nova = CopyingMock()
+        self.vimconn.neutron.show_floatingip.return_value = {
+            "floatingip": {"port_id": ""}
+        }
+
+        self.vimconn._prepare_external_network_for_vminstance(
+            external_network, self.server, created_items, vm_start_time
+        )
+
+        self.assertEqual(mock_get_free_floating_ip.call_count, 1)
+        mock_get_free_floating_ip.assert_called_once_with(
+            self.server,
+            {
+                "floating_ip": "y08b73-o9cc-1a6a-a270-12cc4811bd4u",
+                "vim_id": "608b73-r9cc-5a6a-a270-82cc4811bd4a",
+            },
+        )
+        self.vimconn.neutron.show_floatingip.assert_called_once_with(
+            "y08b73-o9cc-1a6a-a270-12cc4811bd4u"
+        )
+        self.vimconn.nova.servers.get.assert_not_called()
+        mock_create_floating_ip.assert_not_called()
+        mock_assign_floating_ip.assert_called_once_with(
+            "y08b73-o9cc-1a6a-a270-12cc4811bd4u",
+            {
+                "floating_ip": "y08b73-o9cc-1a6a-a270-12cc4811bd4u",
+                "vim_id": "608b73-r9cc-5a6a-a270-82cc4811bd4a",
+            },
+        )
+
+    @patch("time.time")
+    @patch("time.sleep")
+    @patch.object(vimconnector, "_create_floating_ip")
+    @patch.object(vimconnector, "_get_free_floating_ip")
+    @patch.object(vimconnector, "_assign_floating_ip")
+    def test_prepare_external_network_for_vm_instance_no_free_floating_ip(
+        self,
+        mock_assign_floating_ip,
+        mock_get_free_floating_ip,
+        mock_create_floating_ip,
+        mock_sleep,
+        mock_time,
+    ):
+        """There is not any free floating ip."""
+        floating_network = {
+            "floating_ip": "y08b73-o9cc-1a6a-a270-12cc4811bd4u",
+            "vim_id": "608b73-r9cc-5a6a-a270-82cc4811bd4a",
+        }
+        external_network = [floating_network]
+
+        created_items = {}
+        vm_start_time = time_return_value
+        mock_get_free_floating_ip.return_value = None
+        mock_assign_floating_ip.return_value = {}
+        self.vimconn.nova.servers.get.return_value.status = "ERROR"
+        self.vimconn.neutron.show_floatingip.return_value = {}
+
+        with self.assertRaises(KeyError):
+            self.vimconn._prepare_external_network_for_vminstance(
+                external_network, self.server, created_items, vm_start_time
+            )
+
+        self.assertEqual(mock_get_free_floating_ip.call_count, 4)
+        mock_get_free_floating_ip.assert_called_with(
+            self.server,
+            {
+                "floating_ip": "y08b73-o9cc-1a6a-a270-12cc4811bd4u",
+                "vim_id": "608b73-r9cc-5a6a-a270-82cc4811bd4a",
+            },
+        )
+        self.vimconn.neutron.show_floatingip.assert_called_with(None)
+        mock_sleep.assert_not_called()
+        mock_time.assert_not_called()
+        self.assertEqual(self.vimconn.nova.servers.get.call_count, 4)
+        mock_create_floating_ip.assert_called_with(
+            floating_network, self.server, created_items
+        )
+        self.assertEqual(mock_create_floating_ip.call_count, 4)
+        mock_assign_floating_ip.assert_not_called()
+        self.vimconn.nova.servers.get.assert_called_with(self.server.id)
+
+    @patch("time.time")
+    @patch("time.sleep")
+    @patch.object(vimconnector, "_create_floating_ip")
+    @patch.object(vimconnector, "_get_free_floating_ip")
+    @patch.object(vimconnector, "_assign_floating_ip")
+    def test_prepare_external_network_for_vm_instance_no_free_fip_can_not_create_fip_exit_on_error_false(
+        self,
+        mock_assign_floating_ip,
+        mock_get_free_floating_ip,
+        mock_create_floating_ip,
+        mock_sleep,
+        mock_time,
+    ):
+        """There is not any free floating ip, create_floating ip method raise exception
+        exit_on_floating_ip_error set to False."""
+        floating_network = {
+            "floating_ip": "y08b73-o9cc-1a6a-a270-12cc4811bd4u",
+            "vim_id": "608b73-r9cc-5a6a-a270-82cc4811bd4a",
+            "exit_on_floating_ip_error": False,
+        }
+        external_network = [floating_network]
+
+        created_items = {}
+        vm_start_time = time_return_value
+        mock_get_free_floating_ip.return_value = None
+        mock_assign_floating_ip.return_value = {}
+        mock_create_floating_ip.side_effect = VimConnException(
+            "Can not create floating ip."
+        )
+        self.vimconn.nova.servers.get.return_value.status = "ERROR"
+        self.vimconn.neutron.show_floatingip.return_value = {}
+
+        self.vimconn._prepare_external_network_for_vminstance(
+            external_network, self.server, created_items, vm_start_time
+        )
+        self.assertEqual(mock_get_free_floating_ip.call_count, 1)
+        mock_get_free_floating_ip.assert_called_with(
+            self.server,
+            {
+                "floating_ip": "y08b73-o9cc-1a6a-a270-12cc4811bd4u",
+                "vim_id": "608b73-r9cc-5a6a-a270-82cc4811bd4a",
+                "exit_on_floating_ip_error": False,
+            },
+        )
+        self.vimconn.neutron.show_floatingip.assert_not_called()
+        mock_sleep.assert_not_called()
+        mock_time.assert_not_called()
+        self.vimconn.nova.servers.get.assert_not_called()
+        mock_create_floating_ip.assert_called_with(
+            floating_network, self.server, created_items
+        )
+        self.assertEqual(mock_create_floating_ip.call_count, 1)
+        mock_assign_floating_ip.assert_not_called()
+
+    @patch("time.time")
+    @patch("time.sleep")
+    @patch.object(vimconnector, "_create_floating_ip")
+    @patch.object(vimconnector, "_get_free_floating_ip")
+    @patch.object(vimconnector, "_assign_floating_ip")
+    def test_prepare_external_network_for_vm_instance_no_free_fip_can_not_create_fip_exit_on_error_true(
+        self,
+        mock_assign_floating_ip,
+        mock_get_free_floating_ip,
+        mock_create_floating_ip,
+        mock_sleep,
+        mock_time,
+    ):
+        """There is not any free floating ip, create_floating ip method raise exception
+        exit_on_floating_ip_error set to False."""
+        floating_network = {
+            "floating_ip": "y08b73-o9cc-1a6a-a270-12cc4811bd4u",
+            "vim_id": "608b73-r9cc-5a6a-a270-82cc4811bd4a",
+            "exit_on_floating_ip_error": True,
+        }
+        external_network = [floating_network]
+
+        created_items = {}
+        vm_start_time = time_return_value
+        mock_get_free_floating_ip.return_value = None
+        mock_assign_floating_ip.return_value = {}
+        mock_create_floating_ip.side_effect = VimConnException(
+            "Can not create floating ip."
+        )
+        self.vimconn.nova.servers.get.return_value.status = "ERROR"
+        self.vimconn.neutron.show_floatingip.return_value = {}
+        with self.assertRaises(VimConnException):
+            self.vimconn._prepare_external_network_for_vminstance(
+                external_network, self.server, created_items, vm_start_time
+            )
+        self.assertEqual(mock_get_free_floating_ip.call_count, 1)
+        mock_get_free_floating_ip.assert_called_with(
+            self.server,
+            {
+                "floating_ip": "y08b73-o9cc-1a6a-a270-12cc4811bd4u",
+                "vim_id": "608b73-r9cc-5a6a-a270-82cc4811bd4a",
+                "exit_on_floating_ip_error": True,
+            },
+        )
+        self.vimconn.neutron.show_floatingip.assert_not_called()
+        mock_sleep.assert_not_called()
+        mock_time.assert_not_called()
+        self.vimconn.nova.servers.get.assert_not_called()
+        mock_create_floating_ip.assert_called_with(
+            floating_network, self.server, created_items
+        )
+        self.assertEqual(mock_create_floating_ip.call_count, 1)
+        mock_assign_floating_ip.assert_not_called()
+
+    @patch.object(vimconnector, "_create_floating_ip")
+    @patch.object(vimconnector, "_get_free_floating_ip")
+    @patch.object(vimconnector, "_assign_floating_ip")
+    def test_prepare_external_network_for_vm_instance_fip_has_port_id(
+        self,
+        mock_assign_floating_ip,
+        mock_get_free_floating_ip,
+        mock_create_floating_ip,
+    ):
+        """Neutron show floating ip return the fip with port_id and floating network vim_id
+        is different from port_id."""
+        floating_network = {
+            "floating_ip": "y08b73-o9cc-1a6a-a270-12cc4811bd4u",
+            "vim_id": "608b73-r9cc-5a6a-a270-82cc4811bd4a",
+        }
+        external_network = [floating_network]
+        created_items = {}
+        vm_start_time = 150
+        mock_get_free_floating_ip.side_effect = [
+            "t08b73-o9cc-1a6a-a270-12cc4811bd4u",
+            "r08b73-o9cc-1a6a-a270-12cc4811bd4u",
+            "y08b73-o9cc-1a6a-a270-12cc4811bd4u",
+        ]
+        mock_assign_floating_ip.side_effect = [
+            {"floatingip": {"port_id": "k08b73-r9cc-5a6a-a270-82cc4811bd4a"}},
+            {"floatingip": {"port_id": "608b73-r9cc-5a6a-a270-82cc4811bd4a"}},
+        ]
+        self.vimconn.neutron = CopyingMock()
+        self.vimconn.nova = CopyingMock()
+        self.vimconn.neutron.show_floatingip.side_effect = [
+            {"floatingip": {"port_id": "608b73-r9cc-5a6a-a270-82cc4811bd4a"}},
+            {"floatingip": {"port_id": ""}},
+            {"floatingip": {"port_id": ""}},
+        ]
+        self.vimconn._prepare_external_network_for_vminstance(
+            external_network, self.server, created_items, vm_start_time
+        )
+        self.assertEqual(mock_get_free_floating_ip.call_count, 3)
+        _call_mock_get_free_floating_ip = mock_get_free_floating_ip.call_args_list
+        self.assertEqual(
+            _call_mock_get_free_floating_ip[0][0],
+            (
+                self.server,
+                floating_network,
+            ),
+        )
+        self.assertEqual(
+            _call_mock_get_free_floating_ip[1][0],
+            (
+                self.server,
+                floating_network,
+            ),
+        )
+        self.assertEqual(
+            _call_mock_get_free_floating_ip[2][0],
+            (
+                self.server,
+                floating_network,
+            ),
+        )
+        self.assertEqual(self.vimconn.neutron.show_floatingip.call_count, 3)
+        self.vimconn.nova.servers.get.assert_not_called()
+        mock_create_floating_ip.assert_not_called()
+        self.assertEqual(mock_assign_floating_ip.call_count, 2)
+        _call_mock_assign_floating_ip = mock_assign_floating_ip.call_args_list
+        self.assertEqual(
+            _call_mock_assign_floating_ip[0][0],
+            ("r08b73-o9cc-1a6a-a270-12cc4811bd4u", floating_network),
+        )
+        self.assertEqual(
+            _call_mock_assign_floating_ip[1][0],
+            ("y08b73-o9cc-1a6a-a270-12cc4811bd4u", floating_network),
+        )
+
+    @patch("time.time")
+    @patch("time.sleep")
+    @patch.object(vimconnector, "_create_floating_ip")
+    @patch.object(vimconnector, "_get_free_floating_ip")
+    @patch.object(vimconnector, "_assign_floating_ip")
+    def test_prepare_external_network_for_vm_instance_neutron_show_fip_exception_vm_status_in_error(
+        self,
+        mock_assign_floating_ip,
+        mock_get_free_floating_ip,
+        mock_create_floating_ip,
+        mock_sleep,
+        mock_time,
+    ):
+        """Neutron show floating ip gives exception, exit_on_floating_ip_error set to True,
+        VM status is in error."""
+        floating_network = {
+            "floating_ip": "y08b73-o9cc-1a6a-a270-12cc4811bd4u",
+            "vim_id": "608b73-r9cc-5a6a-a270-82cc4811bd4a",
+            "exit_on_floating_ip_error": True,
+        }
+        external_network = [floating_network]
+        created_items = {}
+        vm_start_time = time_return_value
+
+        mock_time.side_effect = [156570150, 156570800, 156571200]
+
+        self.vimconn.nova.servers.get.return_value.status = "ERROR"
+        self.vimconn.neutron.show_floatingip.side_effect = [
+            Exception("Floating ip could not be shown.")
+        ] * 4
+        with self.assertRaises(Exception) as err:
+            self.vimconn._prepare_external_network_for_vminstance(
+                external_network, self.server, created_items, vm_start_time
+            )
+            self.assertEqual(
+                str(err.exception),
+                "Cannot create floating_ip: Exception Floating ip could not be shown.",
+            )
+
+        self.assertEqual(mock_get_free_floating_ip.call_count, 4)
+        _call_mock_get_free_floating_ip = mock_get_free_floating_ip.call_args_list
+        self.assertEqual(
+            _call_mock_get_free_floating_ip[0][0],
+            (
+                self.server,
+                floating_network,
+            ),
+        )
+        self.assertEqual(
+            _call_mock_get_free_floating_ip[1][0],
+            (
+                self.server,
+                floating_network,
+            ),
+        )
+        self.assertEqual(
+            _call_mock_get_free_floating_ip[2][0],
+            (
+                self.server,
+                floating_network,
+            ),
+        )
+        self.assertEqual(
+            _call_mock_get_free_floating_ip[3][0],
+            (
+                self.server,
+                floating_network,
+            ),
+        )
+
+        self.assertEqual(self.vimconn.neutron.show_floatingip.call_count, 4)
+        self.vimconn.nova.servers.get.assert_called_with(self.server.id)
+        mock_create_floating_ip.assert_not_called()
+        mock_assign_floating_ip.assert_not_called()
+        mock_time.assert_not_called()
+        mock_sleep.assert_not_called()
+
+    @patch("time.time")
+    @patch("time.sleep")
+    @patch.object(vimconnector, "_create_floating_ip")
+    @patch.object(vimconnector, "_get_free_floating_ip")
+    @patch.object(vimconnector, "_assign_floating_ip")
+    def test_prepare_external_network_for_vm_instance_neutron_show_fip_exception_vm_status_in_active(
+        self,
+        mock_assign_floating_ip,
+        mock_get_free_floating_ip,
+        mock_create_floating_ip,
+        mock_sleep,
+        mock_time,
+    ):
+        """Neutron show floating ip gives exception, exit_on_floating_ip_error is set to False,
+        VM status is in active."""
+        floating_network = {
+            "floating_ip": "y08b73-o9cc-1a6a-a270-12cc4811bd4u",
+            "vim_id": "608b73-r9cc-5a6a-a270-82cc4811bd4a",
+            "exit_on_floating_ip_error": False,
+        }
+        external_network = [floating_network]
+        created_items = {}
+        vm_start_time = time_return_value
+
+        mock_time.side_effect = [156570150, 156570800, 156571200]
+
+        self.vimconn.nova.servers.get.return_value.status = "ACTIVE"
+        self.vimconn.neutron.show_floatingip.side_effect = [
+            Exception("Floating ip could not be shown.")
+        ] * 4
+
+        self.vimconn._prepare_external_network_for_vminstance(
+            external_network, self.server, created_items, vm_start_time
+        )
+        # self.assertEqual(str(err.exception), "Cannot create floating_ip")
+
+        self.assertEqual(mock_get_free_floating_ip.call_count, 4)
+        _call_mock_get_free_floating_ip = mock_get_free_floating_ip.call_args_list
+        self.assertEqual(
+            _call_mock_get_free_floating_ip[0][0],
+            (
+                self.server,
+                floating_network,
+            ),
+        )
+        self.assertEqual(
+            _call_mock_get_free_floating_ip[1][0],
+            (
+                self.server,
+                floating_network,
+            ),
+        )
+        self.assertEqual(
+            _call_mock_get_free_floating_ip[2][0],
+            (
+                self.server,
+                floating_network,
+            ),
+        )
+        self.assertEqual(
+            _call_mock_get_free_floating_ip[3][0],
+            (
+                self.server,
+                floating_network,
+            ),
+        )
+
+        self.assertEqual(self.vimconn.neutron.show_floatingip.call_count, 4)
+        self.vimconn.nova.servers.get.assert_called_with(self.server.id)
+        mock_create_floating_ip.assert_not_called()
+        mock_assign_floating_ip.assert_not_called()
+        mock_time.assert_not_called()
+        mock_sleep.assert_not_called()
+
+    @patch("time.time")
+    @patch("time.sleep")
+    @patch.object(vimconnector, "_create_floating_ip")
+    @patch.object(vimconnector, "_get_free_floating_ip")
+    @patch.object(vimconnector, "_assign_floating_ip")
+    def test_prepare_external_network_for_vm_instance_neutron_show_fip_exception_exit_on_error(
+        self,
+        mock_assign_floating_ip,
+        mock_get_free_floating_ip,
+        mock_create_floating_ip,
+        mock_sleep,
+        mock_time,
+    ):
+        """Neutron show floating ip gives exception, but exit_on_floating_ip_error is set to True.
+        VM status is not ACTIVE or ERROR, server timeout happened."""
+        floating_network = {
+            "floating_ip": "y08b73-o9cc-1a6a-a270-12cc4811bd4u",
+            "vim_id": "608b73-r9cc-5a6a-a270-82cc4811bd4a",
+            "exit_on_floating_ip_error": True,
+        }
+        external_network = [floating_network]
+        created_items = {}
+        vm_start_time = time_return_value
+        mock_get_free_floating_ip.side_effect = None
+        mock_time.side_effect = [156571790, 156571795, 156571800, 156571805]
+        self.vimconn.nova.servers.get.return_value.status = "OTHER"
+        self.vimconn.neutron.show_floatingip.side_effect = [
+            Exception("Floating ip could not be shown.")
+        ] * 5
+
+        with self.assertRaises(VimConnException) as err:
+            self.vimconn._prepare_external_network_for_vminstance(
+                external_network, self.server, created_items, vm_start_time
+            )
+        self.assertEqual(
+            str(err.exception),
+            "Cannot create floating_ip: Exception Floating ip could not be shown.",
+        )
+
+        self.assertEqual(mock_get_free_floating_ip.call_count, 3)
+        _call_mock_get_free_floating_ip = mock_get_free_floating_ip.call_args_list
+        self.assertEqual(
+            _call_mock_get_free_floating_ip[0][0],
+            (
+                self.server,
+                floating_network,
+            ),
+        )
+        self.assertEqual(
+            _call_mock_get_free_floating_ip[1][0],
+            (
+                self.server,
+                floating_network,
+            ),
+        )
+        self.assertEqual(
+            _call_mock_get_free_floating_ip[2][0],
+            (
+                self.server,
+                floating_network,
+            ),
+        )
+
+        self.assertEqual(self.vimconn.neutron.show_floatingip.call_count, 3)
+        self.vimconn.nova.servers.get.assert_called_with(self.server.id)
+        mock_create_floating_ip.assert_not_called()
+        mock_assign_floating_ip.assert_not_called()
+        self.assertEqual(mock_time.call_count, 3)
+        self.assertEqual(mock_sleep.call_count, 2)
+
+    @patch("time.time")
+    @patch("time.sleep")
+    @patch.object(vimconnector, "_create_floating_ip")
+    @patch.object(vimconnector, "_get_free_floating_ip")
+    @patch.object(vimconnector, "_assign_floating_ip")
+    def test_prepare_external_network_for_vm_instance_assign_floating_ip_exception_exit_on_error(
+        self,
+        mock_assign_floating_ip,
+        mock_get_free_floating_ip,
+        mock_create_floating_ip,
+        mock_sleep,
+        mock_time,
+    ):
+        """Assign floating ip method gives exception, exit_on_floating_ip_error is set to True.
+        VM status is in ERROR."""
+        floating_network = {
+            "floating_ip": "y08b73-o9cc-1a6a-a270-12cc4811bd4u",
+            "vim_id": "608b73-r9cc-5a6a-a270-82cc4811bd4a",
+            "exit_on_floating_ip_error": True,
+        }
+        external_network = [floating_network]
+        created_items = {}
+        vm_start_time = time_return_value
+
+        mock_get_free_floating_ip.side_effect = [
+            "y08b73-o9cc-1a6a-a270-12cc4811bd4u"
+        ] * 4
+
+        mock_time.side_effect = [156571790, 156571795, 156571800, 156571805]
+
+        mock_assign_floating_ip.side_effect = [
+            Exception("Floating ip could not be assigned.")
+        ] * 4
+
+        self.vimconn.nova.servers.get.return_value.status = "ERROR"
+        self.vimconn.neutron.show_floatingip.side_effect = [
+            {"floatingip": {"port_id": ""}}
+        ] * 4
+
+        with self.assertRaises(VimConnException) as err:
+            self.vimconn._prepare_external_network_for_vminstance(
+                external_network, self.server, created_items, vm_start_time
+            )
+        self.assertEqual(
+            str(err.exception),
+            "Cannot create floating_ip: Exception Floating ip could not be assigned.",
+        )
+
+        self.assertEqual(mock_get_free_floating_ip.call_count, 4)
+        _call_mock_get_free_floating_ip = mock_get_free_floating_ip.call_args_list
+        self.assertEqual(
+            _call_mock_get_free_floating_ip[0][0],
+            (
+                self.server,
+                floating_network,
+            ),
+        )
+        self.assertEqual(
+            _call_mock_get_free_floating_ip[1][0],
+            (
+                self.server,
+                floating_network,
+            ),
+        )
+        self.assertEqual(
+            _call_mock_get_free_floating_ip[2][0],
+            (
+                self.server,
+                floating_network,
+            ),
+        )
+
+        self.assertEqual(self.vimconn.neutron.show_floatingip.call_count, 4)
+        self.vimconn.neutron.show_floatingip.assert_called_with(
+            "y08b73-o9cc-1a6a-a270-12cc4811bd4u"
+        )
+        self.assertEqual(self.vimconn.nova.servers.get.call_count, 4)
+        self.vimconn.nova.servers.get.assert_called_with(self.server.id)
+        mock_time.assert_not_called()
+        mock_sleep.assert_not_called()
+        mock_create_floating_ip.assert_not_called()
+
+    @patch("time.time")
+    @patch("time.sleep")
+    @patch.object(vimconnector, "_create_floating_ip")
+    @patch.object(vimconnector, "_get_free_floating_ip")
+    @patch.object(vimconnector, "_assign_floating_ip")
+    def test_prepare_external_network_for_vm_instance_empty_external_network_list(
+        self,
+        mock_assign_floating_ip,
+        mock_get_free_floating_ip,
+        mock_create_floating_ip,
+        mock_sleep,
+        mock_time,
+    ):
+        """External network list is empty."""
+        external_network = []
+        created_items = {}
+        vm_start_time = time_return_value
+
+        self.vimconn._prepare_external_network_for_vminstance(
+            external_network, self.server, created_items, vm_start_time
+        )
+        mock_create_floating_ip.assert_not_called()
+        mock_time.assert_not_called()
+        mock_sleep.assert_not_called()
+        mock_assign_floating_ip.assert_not_called()
+        mock_get_free_floating_ip.assert_not_called()
+        self.vimconn.neutron.show.show_floatingip.assert_not_called()
+        self.vimconn.nova.servers.get.assert_not_called()
+
+    @patch.object(vimconnector, "_vimconnector__wait_for_vm")
+    def test_update_port_security_for_vm_instance(self, mock_wait_for_vm):
+        """no_secured_ports has port and the port has allow-address-pairs."""
+        no_secured_ports = [(port2_id, "allow-address-pairs")]
+
+        self.vimconn._update_port_security_for_vminstance(no_secured_ports, self.server)
+
+        mock_wait_for_vm.assert_called_once_with(self.server.id, "ACTIVE")
+
+        self.vimconn.neutron.update_port.assert_called_once_with(
+            port2_id,
+            {"port": {"allowed_address_pairs": [{"ip_address": "0.0.0.0/0"}]}},
+        )
+
+    @patch.object(vimconnector, "_vimconnector__wait_for_vm")
+    def test_update_port_security_for_vm_instance_no_allowed_address_pairs(
+        self, mock_wait_for_vm
+    ):
+        """no_secured_ports has port and the port does not have allow-address-pairs."""
+        no_secured_ports = [(port2_id, "something")]
+
+        self.vimconn._update_port_security_for_vminstance(no_secured_ports, self.server)
+
+        mock_wait_for_vm.assert_called_once_with(self.server.id, "ACTIVE")
+
+        self.vimconn.neutron.update_port.assert_called_once_with(
+            port2_id,
+            {"port": {"port_security_enabled": False, "security_groups": None}},
+        )
+
+    @patch.object(vimconnector, "_vimconnector__wait_for_vm")
+    def test_update_port_security_for_vm_instance_wait_for_vm_raise_exception(
+        self, mock_wait_for_vm
+    ):
+        """__wait_for_vm raises timeout exception."""
+        no_secured_ports = [(port2_id, "something")]
+
+        mock_wait_for_vm.side_effect = VimConnException("Timeout waiting for instance.")
+
+        with self.assertRaises(VimConnException) as err:
+            self.vimconn._update_port_security_for_vminstance(
+                no_secured_ports, self.server
+            )
+        self.assertEqual(str(err.exception), "Timeout waiting for instance.")
+
+        mock_wait_for_vm.assert_called_once_with(self.server.id, "ACTIVE")
+
+        self.vimconn.neutron.update_port.assert_not_called()
+
+    @patch.object(vimconnector, "_vimconnector__wait_for_vm")
+    def test_update_port_security_for_vm_instance_neutron_update_port_raise_exception(
+        self, mock_wait_for_vm
+    ):
+        """neutron_update_port method raises exception."""
+        no_secured_ports = [(port2_id, "something")]
+
+        self.vimconn.neutron.update_port.side_effect = Exception(
+            "Port security could not be updated."
+        )
+
+        with self.assertRaises(VimConnException) as err:
+            self.vimconn._update_port_security_for_vminstance(
+                no_secured_ports, self.server
+            )
+        self.assertEqual(
+            str(err.exception),
+            "It was not possible to disable port security for port 17472685-f67f-49fd-8722-eabb7692fc22",
+        )
+        mock_wait_for_vm.assert_called_once_with(self.server.id, "ACTIVE")
+
+        self.vimconn.neutron.update_port.assert_called_once_with(
+            port2_id,
+            {"port": {"port_security_enabled": False, "security_groups": None}},
+        )
+
+    @patch.object(vimconnector, "_vimconnector__wait_for_vm")
+    def test_update_port_security_for_vm_instance_empty_port_list(
+        self, mock_wait_for_vm
+    ):
+        """no_secured_ports list does not have any ports."""
+        no_secured_ports = []
+
+        self.vimconn._update_port_security_for_vminstance(no_secured_ports, self.server)
+
+        mock_wait_for_vm.assert_not_called()
+
+        self.vimconn.neutron.update_port.assert_not_called()
+
+    @patch("time.time")
+    @patch.object(vimconnector, "remove_keep_tag_from_persistent_volumes")
+    @patch.object(vimconnector, "_reload_connection")
+    @patch.object(vimconnector, "_prepare_network_for_vminstance")
+    @patch.object(vimconnector, "_create_user_data")
+    @patch.object(vimconnector, "_get_vm_availability_zone")
+    @patch.object(vimconnector, "_prepare_disk_for_vminstance")
+    @patch.object(vimconnector, "_update_port_security_for_vminstance")
+    @patch.object(vimconnector, "_prepare_external_network_for_vminstance")
+    @patch.object(vimconnector, "delete_vminstance")
+    @patch.object(vimconnector, "_format_exception")
+    def test_new_vm_instance(
+        self,
+        mock_format_exception,
+        mock_delete_vm_instance,
+        mock_prepare_external_network,
+        mock_update_port_security,
+        mock_prepare_disk_for_vm_instance,
+        mock_get_vm_availability_zone,
+        mock_create_user_data,
+        mock_prepare_network_for_vm_instance,
+        mock_reload_connection,
+        mock_remove_keep_flag_from_persistent_volumes,
+        mock_time,
+    ):
+        """New VM instance creation is successful."""
+
+        mock_create_user_data.return_value = True, "userdata"
+
+        mock_get_vm_availability_zone.return_value = "nova"
+
+        self.vimconn.nova.servers.create.return_value = self.server
+
+        mock_time.return_value = time_return_value
+
+        expected_result = self.server.id, {}
+
+        result = self.vimconn.new_vminstance(
+            name,
+            description,
+            start,
+            image_id,
+            flavor_id,
+            affinity_group_list,
+            net_list,
+            cloud_config,
+            disk_list2,
+            availability_zone_index,
+            availability_zone_list,
+        )
+        self.assertEqual(result, expected_result)
+
+        mock_reload_connection.assert_called_once()
+        mock_prepare_network_for_vm_instance.assert_called_once_with(
+            name=name,
+            net_list=net_list,
+            created_items={},
+            net_list_vim=[],
+            external_network=[],
+            no_secured_ports=[],
+        )
+        mock_create_user_data.assert_called_once_with(cloud_config)
+        mock_get_vm_availability_zone.assert_called_once_with(
+            availability_zone_index, availability_zone_list
+        )
+        mock_prepare_disk_for_vm_instance.assert_called_once_with(
+            name=name,
+            existing_vim_volumes=[],
+            created_items={},
+            vm_av_zone="nova",
+            block_device_mapping={},
+            disk_list=disk_list2,
+        )
+        self.vimconn.nova.servers.create.assert_called_once_with(
+            name=name,
+            image=image_id,
+            flavor=flavor_id,
+            nics=[],
+            security_groups="default",
+            availability_zone="nova",
+            key_name="my_keypair",
+            userdata="userdata",
+            config_drive=True,
+            block_device_mapping={},
+            scheduler_hints={},
+        )
+        mock_time.assert_called_once()
+        mock_update_port_security.assert_called_once_with([], self.server)
+        mock_prepare_external_network.assert_called_once_with(
+            external_network=[],
+            server=self.server,
+            created_items={},
+            vm_start_time=time_return_value,
+        )
+        mock_remove_keep_flag_from_persistent_volumes.assert_not_called()
+        mock_delete_vm_instance.assert_not_called()
+        mock_format_exception.assert_not_called()
+
+    @patch("time.time")
+    @patch.object(vimconnector, "remove_keep_tag_from_persistent_volumes")
+    @patch.object(vimconnector, "_reload_connection")
+    @patch.object(vimconnector, "_prepare_network_for_vminstance")
+    @patch.object(vimconnector, "_create_user_data")
+    @patch.object(vimconnector, "_get_vm_availability_zone")
+    @patch.object(vimconnector, "_prepare_disk_for_vminstance")
+    @patch.object(vimconnector, "_update_port_security_for_vminstance")
+    @patch.object(vimconnector, "_prepare_external_network_for_vminstance")
+    @patch.object(vimconnector, "delete_vminstance")
+    @patch.object(vimconnector, "_format_exception")
+    def test_new_vm_instance_create_user_data_fails(
+        self,
+        mock_format_exception,
+        mock_delete_vm_instance,
+        mock_prepare_external_network,
+        mock_update_port_security,
+        mock_prepare_disk_for_vm_instance,
+        mock_get_vm_availability_zone,
+        mock_create_user_data,
+        mock_prepare_network_for_vm_instance,
+        mock_reload_connection,
+        mock_remove_keep_flag_from_persistent_volumes,
+        mock_time,
+    ):
+        """New VM instance creation failed because of user data creation failure."""
+
+        mock_create_user_data.side_effect = Exception(
+            "User data could not be retrieved."
+        )
+
+        mock_get_vm_availability_zone.return_value = "nova"
+
+        mock_remove_keep_flag_from_persistent_volumes.return_value = {}
+
+        self.vimconn.nova.servers.create.return_value = self.server
+
+        mock_time.return_value = time_return_value
+
+        self.vimconn.new_vminstance(
+            name,
+            description,
+            start,
+            image_id,
+            flavor_id,
+            affinity_group_list,
+            net_list,
+            cloud_config,
+            disk_list,
+            availability_zone_index,
+            availability_zone_list,
+        )
+
+        mock_reload_connection.assert_called_once()
+        mock_prepare_network_for_vm_instance.assert_called_once_with(
+            name=name,
+            net_list=net_list,
+            created_items={},
+            net_list_vim=[],
+            external_network=[],
+            no_secured_ports=[],
+        )
+        mock_create_user_data.assert_called_once_with(cloud_config)
+        mock_get_vm_availability_zone.assert_not_called()
+        mock_prepare_disk_for_vm_instance.assert_not_called()
+        self.vimconn.nova.servers.create.assert_not_called()
+        mock_time.assert_not_called()
+        mock_update_port_security.assert_not_called()
+        mock_prepare_external_network.assert_not_called()
+        mock_remove_keep_flag_from_persistent_volumes.assert_called_once_with({})
+        mock_delete_vm_instance.assert_called_once_with(None, {})
+        mock_format_exception.assert_called_once()
+        arg = mock_format_exception.call_args[0][0]
+        self.assertEqual(str(arg), "User data could not be retrieved.")
+
+    @patch("time.time")
+    @patch.object(vimconnector, "remove_keep_tag_from_persistent_volumes")
+    @patch.object(vimconnector, "_reload_connection")
+    @patch.object(vimconnector, "_prepare_network_for_vminstance")
+    @patch.object(vimconnector, "_create_user_data")
+    @patch.object(vimconnector, "_get_vm_availability_zone")
+    @patch.object(vimconnector, "_prepare_disk_for_vminstance")
+    @patch.object(vimconnector, "_update_port_security_for_vminstance")
+    @patch.object(vimconnector, "_prepare_external_network_for_vminstance")
+    @patch.object(vimconnector, "delete_vminstance")
+    @patch.object(vimconnector, "_format_exception")
+    def test_new_vm_instance_external_network_exception(
+        self,
+        mock_format_exception,
+        mock_delete_vm_instance,
+        mock_prepare_external_network,
+        mock_update_port_security,
+        mock_prepare_disk_for_vm_instance,
+        mock_get_vm_availability_zone,
+        mock_create_user_data,
+        mock_prepare_network_for_vm_instance,
+        mock_reload_connection,
+        mock_remove_keep_flag_from_persistent_volumes,
+        mock_time,
+    ):
+        """New VM instance creation, external network connection has failed as floating
+        ip could not be created."""
+
+        mock_create_user_data.return_value = True, "userdata"
+
+        mock_get_vm_availability_zone.return_value = "nova"
+
+        self.vimconn.nova.servers.create.return_value = self.server
+
+        mock_time.return_value = time_return_value
+
+        mock_remove_keep_flag_from_persistent_volumes.return_value = {}
+
+        mock_prepare_external_network.side_effect = VimConnException(
+            "Can not create floating ip."
+        )
+
+        self.vimconn.new_vminstance(
+            name,
+            description,
+            start,
+            image_id,
+            flavor_id,
+            affinity_group_list,
+            net_list,
+            cloud_config,
+            disk_list2,
+            availability_zone_index,
+            availability_zone_list,
+        )
+
+        mock_reload_connection.assert_called_once()
+        mock_prepare_network_for_vm_instance.assert_called_once_with(
+            name=name,
+            net_list=net_list,
+            created_items={},
+            net_list_vim=[],
+            external_network=[],
+            no_secured_ports=[],
+        )
+        mock_create_user_data.assert_called_once_with(cloud_config)
+        mock_get_vm_availability_zone.assert_called_once_with(
+            availability_zone_index, availability_zone_list
+        )
+        mock_prepare_disk_for_vm_instance.assert_called_once_with(
+            name=name,
+            existing_vim_volumes=[],
+            created_items={},
+            vm_av_zone="nova",
+            block_device_mapping={},
+            disk_list=disk_list2,
+        )
+        self.vimconn.nova.servers.create.assert_called_once_with(
+            name=name,
+            image=image_id,
+            flavor=flavor_id,
+            nics=[],
+            security_groups="default",
+            availability_zone="nova",
+            key_name="my_keypair",
+            userdata="userdata",
+            config_drive=True,
+            block_device_mapping={},
+            scheduler_hints={},
+        )
+        mock_time.assert_called_once()
+        mock_update_port_security.assert_called_once_with([], self.server)
+        mock_prepare_external_network.assert_called_once_with(
+            external_network=[],
+            server=self.server,
+            created_items={},
+            vm_start_time=time_return_value,
+        )
+        mock_remove_keep_flag_from_persistent_volumes.assert_called_once_with({})
+        mock_delete_vm_instance.assert_called_once_with(self.server.id, {})
+        mock_format_exception.assert_called_once()
+        arg = mock_format_exception.call_args[0][0]
+        self.assertEqual(str(arg), "Can not create floating ip.")
+
+    @patch("time.time")
+    @patch.object(vimconnector, "remove_keep_tag_from_persistent_volumes")
+    @patch.object(vimconnector, "_reload_connection")
+    @patch.object(vimconnector, "_prepare_network_for_vminstance")
+    @patch.object(vimconnector, "_create_user_data")
+    @patch.object(vimconnector, "_get_vm_availability_zone")
+    @patch.object(vimconnector, "_prepare_disk_for_vminstance")
+    @patch.object(vimconnector, "_update_port_security_for_vminstance")
+    @patch.object(vimconnector, "_prepare_external_network_for_vminstance")
+    @patch.object(vimconnector, "delete_vminstance")
+    @patch.object(vimconnector, "_format_exception")
+    def test_new_vm_instance_with_affinity_group(
+        self,
+        mock_format_exception,
+        mock_delete_vm_instance,
+        mock_prepare_external_network,
+        mock_update_port_security,
+        mock_prepare_disk_for_vm_instance,
+        mock_get_vm_availability_zone,
+        mock_create_user_data,
+        mock_prepare_network_for_vm_instance,
+        mock_reload_connection,
+        mock_remove_keep_flag_from_persistent_volumes,
+        mock_time,
+    ):
+        """New VM creation with affinity group."""
+        affinity_group_list = [
+            {"affinity_group_id": "38b73-e9cc-5a6a-t270-82cc4811bd4a"}
+        ]
+        mock_create_user_data.return_value = True, "userdata"
+        mock_get_vm_availability_zone.return_value = "nova"
+        self.vimconn.nova.servers.create.return_value = self.server
+        mock_time.return_value = time_return_value
+        expected_result = self.server.id, {}
+
+        result = self.vimconn.new_vminstance(
+            name,
+            description,
+            start,
+            image_id,
+            flavor_id,
+            affinity_group_list,
+            net_list,
+            cloud_config,
+            disk_list2,
+            availability_zone_index,
+            availability_zone_list,
+        )
+        self.assertEqual(result, expected_result)
+
+        mock_reload_connection.assert_called_once()
+        mock_prepare_network_for_vm_instance.assert_called_once_with(
+            name=name,
+            net_list=net_list,
+            created_items={},
+            net_list_vim=[],
+            external_network=[],
+            no_secured_ports=[],
+        )
+        mock_create_user_data.assert_called_once_with(cloud_config)
+        mock_get_vm_availability_zone.assert_called_once_with(
+            availability_zone_index, availability_zone_list
+        )
+        mock_prepare_disk_for_vm_instance.assert_called_once_with(
+            name=name,
+            existing_vim_volumes=[],
+            created_items={},
+            vm_av_zone="nova",
+            block_device_mapping={},
+            disk_list=disk_list2,
+        )
+        self.vimconn.nova.servers.create.assert_called_once_with(
+            name=name,
+            image=image_id,
+            flavor=flavor_id,
+            nics=[],
+            security_groups="default",
+            availability_zone="nova",
+            key_name="my_keypair",
+            userdata="userdata",
+            config_drive=True,
+            block_device_mapping={},
+            scheduler_hints={"group": "38b73-e9cc-5a6a-t270-82cc4811bd4a"},
+        )
+        mock_time.assert_called_once()
+        mock_update_port_security.assert_called_once_with([], self.server)
+        mock_prepare_external_network.assert_called_once_with(
+            external_network=[],
+            server=self.server,
+            created_items={},
+            vm_start_time=time_return_value,
+        )
+        mock_remove_keep_flag_from_persistent_volumes.assert_not_called()
+        mock_delete_vm_instance.assert_not_called()
+        mock_format_exception.assert_not_called()
+
+    @patch("time.time")
+    @patch.object(vimconnector, "remove_keep_tag_from_persistent_volumes")
+    @patch.object(vimconnector, "_reload_connection")
+    @patch.object(vimconnector, "_prepare_network_for_vminstance")
+    @patch.object(vimconnector, "_create_user_data")
+    @patch.object(vimconnector, "_get_vm_availability_zone")
+    @patch.object(vimconnector, "_prepare_disk_for_vminstance")
+    @patch.object(vimconnector, "_update_port_security_for_vminstance")
+    @patch.object(vimconnector, "_prepare_external_network_for_vminstance")
+    @patch.object(vimconnector, "delete_vminstance")
+    @patch.object(vimconnector, "_format_exception")
+    def test_new_vm_instance_nova_server_create_failed(
+        self,
+        mock_format_exception,
+        mock_delete_vm_instance,
+        mock_prepare_external_network,
+        mock_update_port_security,
+        mock_prepare_disk_for_vm_instance,
+        mock_get_vm_availability_zone,
+        mock_create_user_data,
+        mock_prepare_network_for_vm_instance,
+        mock_reload_connection,
+        mock_remove_keep_flag_from_persistent_volumes,
+        mock_time,
+    ):
+        """New VM(server) creation failed."""
+
+        mock_create_user_data.return_value = True, "userdata"
+
+        mock_get_vm_availability_zone.return_value = "nova"
+
+        self.vimconn.nova.servers.create.side_effect = Exception(
+            "Server could not be created."
+        )
+
+        mock_time.return_value = time_return_value
+
+        mock_remove_keep_flag_from_persistent_volumes.return_value = {}
+
+        self.vimconn.new_vminstance(
+            name,
+            description,
+            start,
+            image_id,
+            flavor_id,
+            affinity_group_list,
+            net_list,
+            cloud_config,
+            disk_list2,
+            availability_zone_index,
+            availability_zone_list,
+        )
+
+        mock_reload_connection.assert_called_once()
+        mock_prepare_network_for_vm_instance.assert_called_once_with(
+            name=name,
+            net_list=net_list,
+            created_items={},
+            net_list_vim=[],
+            external_network=[],
+            no_secured_ports=[],
+        )
+        mock_create_user_data.assert_called_once_with(cloud_config)
+        mock_get_vm_availability_zone.assert_called_once_with(
+            availability_zone_index, availability_zone_list
+        )
+        mock_prepare_disk_for_vm_instance.assert_called_once_with(
+            name=name,
+            existing_vim_volumes=[],
+            created_items={},
+            vm_av_zone="nova",
+            block_device_mapping={},
+            disk_list=disk_list2,
+        )
+
+        self.vimconn.nova.servers.create.assert_called_once_with(
+            name=name,
+            image=image_id,
+            flavor=flavor_id,
+            nics=[],
+            security_groups="default",
+            availability_zone="nova",
+            key_name="my_keypair",
+            userdata="userdata",
+            config_drive=True,
+            block_device_mapping={},
+            scheduler_hints={},
+        )
+        mock_time.assert_not_called()
+        mock_update_port_security.assert_not_called()
+        mock_prepare_external_network.assert_not_called()
+        mock_remove_keep_flag_from_persistent_volumes.assert_called_once_with({})
+        mock_delete_vm_instance.assert_called_once_with(None, {})
+        mock_format_exception.assert_called_once()
+        arg = mock_format_exception.call_args[0][0]
+        self.assertEqual(str(arg), "Server could not be created.")
+
+    @patch("time.time")
+    @patch.object(vimconnector, "remove_keep_tag_from_persistent_volumes")
+    @patch.object(vimconnector, "_reload_connection")
+    @patch.object(vimconnector, "_prepare_network_for_vminstance")
+    @patch.object(vimconnector, "_create_user_data")
+    @patch.object(vimconnector, "_get_vm_availability_zone")
+    @patch.object(vimconnector, "_prepare_disk_for_vminstance")
+    @patch.object(vimconnector, "_update_port_security_for_vminstance")
+    @patch.object(vimconnector, "_prepare_external_network_for_vminstance")
+    @patch.object(vimconnector, "delete_vminstance")
+    @patch.object(vimconnector, "_format_exception")
+    def test_new_vm_instance_connection_exception(
+        self,
+        mock_format_exception,
+        mock_delete_vm_instance,
+        mock_prepare_external_network,
+        mock_update_port_security,
+        mock_prepare_disk_for_vm_instance,
+        mock_get_vm_availability_zone,
+        mock_create_user_data,
+        mock_prepare_network_for_vm_instance,
+        mock_reload_connection,
+        mock_remove_keep_flag_from_persistent_volumes,
+        mock_time,
+    ):
+        """Connection to Cloud API has failed."""
+        mock_reload_connection.side_effect = Exception("Can not connect to Cloud APIs.")
+        mock_create_user_data.return_value = True, "userdata"
+        mock_get_vm_availability_zone.return_value = "nova"
+        self.vimconn.nova.servers.create.return_value = self.server
+        mock_time.return_value = time_return_value
+        mock_remove_keep_flag_from_persistent_volumes.return_value = {}
+
+        self.vimconn.new_vminstance(
+            name,
+            description,
+            start,
+            image_id,
+            flavor_id,
+            affinity_group_list,
+            net_list,
+            cloud_config,
+            disk_list,
+            availability_zone_index,
+            availability_zone_list,
+        )
+        mock_format_exception.assert_called_once()
+        arg = mock_format_exception.call_args[0][0]
+        self.assertEqual(str(arg), "Can not connect to Cloud APIs.")
+        mock_reload_connection.assert_called_once()
+        mock_prepare_network_for_vm_instance.assert_not_called()
+        mock_create_user_data.assert_not_called()
+        mock_get_vm_availability_zone.assert_not_called()
+        mock_prepare_disk_for_vm_instance.assert_not_called()
+        self.vimconn.nova.servers.create.assert_not_called()
+        mock_time.assert_not_called()
+        mock_update_port_security.assert_not_called()
+        mock_prepare_external_network.assert_not_called()
+        mock_remove_keep_flag_from_persistent_volumes.assert_called_once_with({})
+        mock_delete_vm_instance.assert_called_once_with(None, {})
+
+    @patch.object(vimconnector, "_delete_ports_by_id_wth_neutron")
+    def test_delete_vm_ports_attached_to_network_empty_created_items(
+        self, mock_delete_ports_by_id_wth_neutron
+    ):
+        """Created_items is emtpty."""
+        created_items = {}
+        self.vimconn._delete_vm_ports_attached_to_network(created_items)
+        self.vimconn.neutron.list_ports.assert_not_called()
+        self.vimconn.neutron.delete_port.assert_not_called()
+        mock_delete_ports_by_id_wth_neutron.assert_not_called()
+
+    @patch.object(vimconnector, "_delete_ports_by_id_wth_neutron")
+    def test_delete_vm_ports_attached_to_network(
+        self, mock_delete_ports_by_id_wth_neutron
+    ):
+        created_items = {
+            "floating_ip:308b73-t9cc-1a6a-a270-12cc4811bd4a": True,
+            f"volume:{volume_id2}": True,
+            f"volume:{volume_id}": True,
+            f"port:{port_id}": True,
+        }
+        self.vimconn._delete_vm_ports_attached_to_network(created_items)
+        mock_delete_ports_by_id_wth_neutron.assert_called_once_with(f"{port_id}")
+        self.vimconn.logger.error.assert_not_called()
+
+    @patch.object(vimconnector, "_delete_ports_by_id_wth_neutron")
+    def test_delete_vm_ports_attached_to_network_wthout_port(
+        self, mock_delete_ports_by_id_wth_neutron
+    ):
+        """Created_items does not have port."""
+        created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id2}": True,
+            f"volume:{volume_id}": True,
+        }
+        self.vimconn._delete_vm_ports_attached_to_network(created_items)
+        mock_delete_ports_by_id_wth_neutron.assert_not_called()
+        self.vimconn.logger.error.assert_not_called()
+
+    @patch.object(vimconnector, "_delete_ports_by_id_wth_neutron")
+    def test_delete_vm_ports_attached_to_network_delete_port_raise_vimconnexception(
+        self, mock_delete_ports_by_id_wth_neutron
+    ):
+        """_delete_ports_by_id_wth_neutron raises vimconnexception."""
+        created_items = deepcopy(created_items_all_true)
+        mock_delete_ports_by_id_wth_neutron.side_effect = VimConnException(
+            "Can not delete port"
+        )
+        self.vimconn._delete_vm_ports_attached_to_network(created_items)
+        mock_delete_ports_by_id_wth_neutron.assert_called_once_with(f"{port_id}")
+        self.vimconn.logger.error.assert_called_once_with(
+            "Error deleting port: VimConnException: Can not delete port"
+        )
+
+    @patch.object(vimconnector, "_delete_ports_by_id_wth_neutron")
+    def test_delete_vm_ports_attached_to_network_delete_port_raise_nvexception(
+        self, mock_delete_ports_by_id_wth_neutron
+    ):
+        """_delete_ports_by_id_wth_neutron raises nvExceptions.ClientException."""
+        created_items = deepcopy(created_items_all_true)
+        mock_delete_ports_by_id_wth_neutron.side_effect = nvExceptions.ClientException(
+            "Connection aborted."
+        )
+        self.vimconn._delete_vm_ports_attached_to_network(created_items)
+        mock_delete_ports_by_id_wth_neutron.assert_called_once_with(f"{port_id}")
+        self.vimconn.logger.error.assert_called_once_with(
+            "Error deleting port: ClientException: Unknown Error (HTTP Connection aborted.)"
+        )
+
+    @patch.object(vimconnector, "_delete_ports_by_id_wth_neutron")
+    def test_delete_vm_ports_attached_to_network_delete_port_invalid_port_item(
+        self, mock_delete_ports_by_id_wth_neutron
+    ):
+        """port item is invalid."""
+        created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id2}": True,
+            f"volume:{volume_id}": True,
+            f"port:{port_id}:": True,
+        }
+        mock_delete_ports_by_id_wth_neutron.side_effect = VimConnException(
+            "Port is not valid."
+        )
+        self.vimconn._delete_vm_ports_attached_to_network(created_items)
+        mock_delete_ports_by_id_wth_neutron.assert_called_once_with(f"{port_id}:")
+        self.vimconn.logger.error.assert_called_once_with(
+            "Error deleting port: VimConnException: Port is not valid."
+        )
+
+    @patch.object(vimconnector, "_delete_ports_by_id_wth_neutron")
+    def test_delete_vm_ports_attached_to_network_delete_port_already_deleted(
+        self, mock_delete_ports_by_id_wth_neutron
+    ):
+        """port is already deleted."""
+        created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id2}": True,
+            f"volume:{volume_id}": None,
+            f"port:{port_id}": None,
+        }
+        self.vimconn._delete_vm_ports_attached_to_network(created_items)
+        mock_delete_ports_by_id_wth_neutron.assert_not_called()
+        self.vimconn.logger.error.assert_not_called()
+
+    def test_delete_floating_ip_by_id(self):
+        created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"port:{port_id}": True,
+        }
+        expected_created_items = {
+            f"floating_ip:{floating_network_vim_id}": None,
+            f"port:{port_id}": True,
+        }
+        k_id = floating_network_vim_id
+        k = f"floating_ip:{floating_network_vim_id}"
+        self.vimconn._delete_floating_ip_by_id(k, k_id, created_items)
+        self.vimconn.neutron.delete_floatingip.assert_called_once_with(k_id)
+        self.assertEqual(created_items, expected_created_items)
+
+    def test_delete_floating_ip_by_id_floating_ip_already_deleted(self):
+        """floating ip is already deleted."""
+        created_items = {
+            f"floating_ip:{floating_network_vim_id}": None,
+            f"port:{port_id}": True,
+        }
+        k_id = floating_network_vim_id
+        k = f"floating_ip:{floating_network_vim_id}"
+        self.vimconn._delete_floating_ip_by_id(k, k_id, created_items)
+        self.vimconn.neutron.delete_floatingip.assert_called_once_with(k_id)
+        self.assertEqual(
+            created_items,
+            {
+                f"floating_ip:{floating_network_vim_id}": None,
+                f"port:{port_id}": True,
+            },
+        )
+
+    def test_delete_floating_ip_by_id_floating_ip_raises_nvexception(self):
+        """netron delete floating ip raises nvExceptions.ClientException."""
+        created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"port:{port_id}": True,
+        }
+        k_id = floating_network_vim_id
+        k = f"floating_ip:{floating_network_vim_id}"
+        self.vimconn.neutron.delete_floatingip.side_effect = (
+            nvExceptions.ClientException("Client exception occurred.")
+        )
+        self.vimconn._delete_floating_ip_by_id(k, k_id, created_items)
+        self.vimconn.neutron.delete_floatingip.assert_called_once_with(k_id)
+        self.assertEqual(
+            created_items,
+            {
+                f"floating_ip:{floating_network_vim_id}": True,
+                f"port:{port_id}": True,
+            },
+        )
+        self.vimconn.logger.error.assert_called_once_with(
+            "Error deleting floating ip: ClientException: Unknown Error (HTTP Client exception occurred.)"
+        )
+
+    def test_delete_floating_ip_by_id_floating_ip_raises_vimconnexception(self):
+        """netron delete floating ip raises VimConnNotFoundException."""
+        created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"port:{port_id}": True,
+        }
+        k_id = floating_network_vim_id
+        k = f"floating_ip:{floating_network_vim_id}"
+        self.vimconn.neutron.delete_floatingip.side_effect = VimConnNotFoundException(
+            "Port id could not found."
+        )
+        self.vimconn._delete_floating_ip_by_id(k, k_id, created_items)
+        self.vimconn.neutron.delete_floatingip.assert_called_once_with(k_id)
+        self.assertEqual(
+            created_items,
+            {
+                f"floating_ip:{floating_network_vim_id}": True,
+                f"port:{port_id}": True,
+            },
+        )
+        self.vimconn.logger.error.assert_called_once_with(
+            "Error deleting floating ip: VimConnNotFoundException: Port id could not found."
+        )
+
+    def test_delete_floating_ip_by_id_floating_ip_invalid_k_item(self):
+        """invalid floating ip item."""
+        created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"port:{port_id}": True,
+        }
+        expected_created_items = {
+            f"floating_ip:{floating_network_vim_id}::": None,
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"port:{port_id}": True,
+        }
+        k_id = floating_network_vim_id
+        k = f"floating_ip:{floating_network_vim_id}::"
+        self.vimconn._delete_floating_ip_by_id(k, k_id, created_items)
+        self.vimconn.neutron.delete_floatingip.assert_called_once_with(k_id)
+        self.assertEqual(created_items, expected_created_items)
+
+    def test_delete_volumes_by_id_with_cinder_volume_status_available(self):
+        """volume status is available."""
+        created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id2}": True,
+            f"volume:{volume_id}": True,
+            f"port:{port_id}": None,
+        }
+        expected_created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id2}": True,
+            f"volume:{volume_id}": None,
+            f"port:{port_id}": None,
+        }
+        volumes_to_hold = []
+        k = f"volume:{volume_id}"
+        k_id = volume_id
+        self.vimconn.cinder.volumes.get.return_value.status = "available"
+        result = self.vimconn._delete_volumes_by_id_wth_cinder(
+            k, k_id, volumes_to_hold, created_items
+        )
+        self.assertEqual(result, None)
+        self.vimconn.cinder.volumes.get.assert_called_once_with(k_id)
+        self.vimconn.cinder.volumes.delete.assert_called_once_with(k_id)
+        self.vimconn.logger.error.assert_not_called()
+        self.assertEqual(created_items, expected_created_items)
+
+    def test_delete_volumes_by_id_with_cinder_volume_already_deleted(self):
+        """volume is already deleted."""
+        created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id2}": True,
+            f"volume:{volume_id}": None,
+            f"port:{port_id}": None,
+        }
+        expected_created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id2}": True,
+            f"volume:{volume_id}": None,
+            f"port:{port_id}": None,
+        }
+        volumes_to_hold = []
+        k = f"volume:{volume_id}"
+        k_id = volume_id
+        self.vimconn.cinder.volumes.get.return_value.status = "available"
+        result = self.vimconn._delete_volumes_by_id_wth_cinder(
+            k, k_id, volumes_to_hold, created_items
+        )
+        self.assertEqual(result, None)
+        self.vimconn.cinder.volumes.get.assert_called_once_with(k_id)
+        self.vimconn.cinder.volumes.delete.assert_called_once_with(k_id)
+        self.vimconn.logger.error.assert_not_called()
+        self.assertEqual(created_items, expected_created_items)
+
+    def test_delete_volumes_by_id_with_cinder_get_volume_raise_exception(self):
+        """cinder get volume raises exception."""
+        created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id2}": True,
+            f"volume:{volume_id}": True,
+            f"port:{port_id}": None,
+        }
+        expected_created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id2}": True,
+            f"volume:{volume_id}": True,
+            f"port:{port_id}": None,
+        }
+        volumes_to_hold = []
+        k = f"volume:{volume_id}"
+        k_id = volume_id
+        self.vimconn.cinder.volumes.get.side_effect = Exception(
+            "Can not get volume status."
+        )
+        result = self.vimconn._delete_volumes_by_id_wth_cinder(
+            k, k_id, volumes_to_hold, created_items
+        )
+        self.assertEqual(result, None)
+        self.vimconn.cinder.volumes.get.assert_called_once_with(k_id)
+        self.vimconn.cinder.volumes.delete.assert_not_called()
+        self.vimconn.logger.error.assert_called_once_with(
+            "Error deleting volume: Exception: Can not get volume status."
+        )
+        self.assertEqual(created_items, expected_created_items)
+
+    def test_delete_volumes_by_id_with_cinder_delete_volume_raise_exception(self):
+        """cinder delete volume raises exception."""
+        created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id2}": True,
+            f"volume:{volume_id}": True,
+            f"port:{port_id}": None,
+        }
+        expected_created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id2}": True,
+            f"volume:{volume_id}": True,
+            f"port:{port_id}": None,
+        }
+        volumes_to_hold = []
+        k = f"volume:{volume_id}"
+        k_id = volume_id
+        self.vimconn.cinder.volumes.get.return_value.status = "available"
+        self.vimconn.cinder.volumes.delete.side_effect = nvExceptions.ClientException(
+            "Connection aborted."
+        )
+        result = self.vimconn._delete_volumes_by_id_wth_cinder(
+            k, k_id, volumes_to_hold, created_items
+        )
+        self.assertEqual(result, None)
+        self.vimconn.cinder.volumes.get.assert_called_once_with(k_id)
+        self.vimconn.cinder.volumes.delete.assert_called_once_with(k_id)
+        self.vimconn.logger.error.assert_called_once_with(
+            "Error deleting volume: ClientException: Unknown Error (HTTP Connection aborted.)"
+        )
+        self.assertEqual(created_items, expected_created_items)
+
+    def test_delete_volumes_by_id_with_cinder_volume_to_be_hold(self):
+        """volume_to_hold has item."""
+        created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id2}": True,
+            f"volume:{volume_id}": True,
+            f"port:{port_id}": None,
+        }
+        expected_created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id2}": True,
+            f"volume:{volume_id}": True,
+            f"port:{port_id}": None,
+        }
+        volumes_to_hold = [volume_id]
+        k = f"volume:{volume_id}"
+        k_id = volume_id
+        result = self.vimconn._delete_volumes_by_id_wth_cinder(
+            k, k_id, volumes_to_hold, created_items
+        )
+        self.assertEqual(result, None)
+        self.vimconn.cinder.volumes.get.assert_not_called()
+        self.vimconn.cinder.volumes.delete.assert_not_called()
+        self.vimconn.logger.error.assert_not_called()
+        self.assertEqual(created_items, expected_created_items)
+
+    def test_delete_volumes_by_id_with_cinder_volume_status_not_available(self):
+        """volume status is not available."""
+        created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id2}": True,
+            f"volume:{volume_id}": True,
+            f"port:{port_id}": None,
+        }
+        expected_created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id2}": True,
+            f"volume:{volume_id}": True,
+            f"port:{port_id}": None,
+        }
+        volumes_to_hold = []
+        k = f"volume:{volume_id}"
+        k_id = volume_id
+        self.vimconn.cinder.volumes.get.return_value.status = "unavailable"
+        result = self.vimconn._delete_volumes_by_id_wth_cinder(
+            k, k_id, volumes_to_hold, created_items
+        )
+        self.assertEqual(result, True)
+        self.vimconn.cinder.volumes.get.assert_called_once_with(k_id)
+        self.vimconn.cinder.volumes.delete.assert_not_called()
+        self.vimconn.logger.error.assert_not_called()
+        self.assertEqual(created_items, expected_created_items)
+
+    def test_delete_ports_by_id_by_neutron(self):
+        """neutron delete ports."""
+        k_id = port_id
+        self.vimconn.neutron.list_ports.return_value = {
+            "ports": [{"id": port_id}, {"id": port2_id}]
+        }
+
+        self.vimconn._delete_ports_by_id_wth_neutron(k_id)
+        self.vimconn.neutron.list_ports.assert_called_once()
+        self.vimconn.neutron.delete_port.assert_called_once_with(k_id)
+        self.vimconn.logger.error.assert_not_called()
+
+    def test_delete_ports_by_id_by_neutron_id_not_in_port_list(self):
+        """port id not in the port list."""
+        k_id = volume_id
+        self.vimconn.neutron.list_ports.return_value = {
+            "ports": [{"id": port_id}, {"id": port2_id}]
+        }
+
+        self.vimconn._delete_ports_by_id_wth_neutron(k_id)
+        self.vimconn.neutron.list_ports.assert_called_once()
+        self.vimconn.neutron.delete_port.assert_not_called()
+        self.vimconn.logger.error.assert_not_called()
+
+    def test_delete_ports_by_id_by_neutron_list_port_raise_exception(self):
+        """neutron list port raises exception."""
+        k_id = port_id
+        self.vimconn.neutron.list_ports.side_effect = nvExceptions.ClientException(
+            "Connection aborted."
+        )
+        self.vimconn._delete_ports_by_id_wth_neutron(k_id)
+        self.vimconn.neutron.list_ports.assert_called_once()
+        self.vimconn.neutron.delete_port.assert_not_called()
+        self.vimconn.logger.error.assert_called_once_with(
+            "Error deleting port: ClientException: Unknown Error (HTTP Connection aborted.)"
+        )
+
+    def test_delete_ports_by_id_by_neutron_delete_port_raise_exception(self):
+        """neutron delete port raises exception."""
+        k_id = port_id
+        self.vimconn.neutron.list_ports.return_value = {
+            "ports": [{"id": port_id}, {"id": port2_id}]
+        }
+        self.vimconn.neutron.delete_port.side_effect = nvExceptions.ClientException(
+            "Connection aborted."
+        )
+        self.vimconn._delete_ports_by_id_wth_neutron(k_id)
+        self.vimconn.neutron.list_ports.assert_called_once()
+        self.vimconn.neutron.delete_port.assert_called_once_with(k_id)
+        self.vimconn.logger.error.assert_called_once_with(
+            "Error deleting port: ClientException: Unknown Error (HTTP Connection aborted.)"
+        )
+
+    def test_get_item_name_id(self):
+        """Get name and id successfully."""
+        k = f"some:{port_id}"
+        result = self.vimconn._get_item_name_id(k)
+        self.assertEqual(result, ("some", f"{port_id}"))
+
+    def test_get_item_name_id_wthout_semicolon(self):
+        """Does not have seperator."""
+        k = f"some{port_id}"
+        result = self.vimconn._get_item_name_id(k)
+        self.assertEqual(result, (f"some{port_id}", ""))
+
+    def test_get_item_name_id_empty_string(self):
+        """Empty string."""
+        k = ""
+        result = self.vimconn._get_item_name_id(k)
+        self.assertEqual(result, ("", ""))
+
+    def test_get_item_name_id_k_is_none(self):
+        """item is None."""
+        k = None
+        with self.assertRaises(AttributeError):
+            self.vimconn._get_item_name_id(k)
+
+    @patch.object(vimconnector, "_get_item_name_id")
+    @patch.object(vimconnector, "_delete_volumes_by_id_wth_cinder")
+    @patch.object(vimconnector, "_delete_floating_ip_by_id")
+    def test_delete_created_items(
+        self,
+        mock_delete_floating_ip_by_id,
+        mock_delete_volumes_by_id_wth_cinder,
+        mock_get_item_name_id,
+    ):
+        """Created items has floating ip and volume."""
+        created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id}": True,
+            f"port:{port_id}": None,
+        }
+        mock_get_item_name_id.side_effect = [
+            ("floating_ip", f"{floating_network_vim_id}"),
+            ("volume", f"{volume_id}"),
+        ]
+        mock_delete_volumes_by_id_wth_cinder.return_value = True
+        volumes_to_hold = []
+        keep_waiting = False
+        result = self.vimconn._delete_created_items(
+            created_items, volumes_to_hold, keep_waiting
+        )
+        self.assertEqual(result, True)
+        self.assertEqual(mock_get_item_name_id.call_count, 2)
+        mock_delete_volumes_by_id_wth_cinder.assert_called_once_with(
+            f"volume:{volume_id}", f"{volume_id}", [], created_items
+        )
+        mock_delete_floating_ip_by_id.assert_called_once_with(
+            f"floating_ip:{floating_network_vim_id}",
+            f"{floating_network_vim_id}",
+            created_items,
+        )
+        self.vimconn.logger.error.assert_not_called()
+
+    @patch.object(vimconnector, "_get_item_name_id")
+    @patch.object(vimconnector, "_delete_volumes_by_id_wth_cinder")
+    @patch.object(vimconnector, "_delete_floating_ip_by_id")
+    def test_delete_created_items_wth_volumes_to_hold(
+        self,
+        mock_delete_floating_ip_by_id,
+        mock_delete_volumes_by_id_wth_cinder,
+        mock_get_item_name_id,
+    ):
+        """Created items has floating ip and volume and volumes_to_hold has items."""
+        created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id}": True,
+            f"port:{port_id}": None,
+        }
+        mock_get_item_name_id.side_effect = [
+            ("floating_ip", f"{floating_network_vim_id}"),
+            ("volume", f"{volume_id}"),
+        ]
+        mock_delete_volumes_by_id_wth_cinder.return_value = True
+        volumes_to_hold = [f"{volume_id}", f"{volume_id2}"]
+        keep_waiting = False
+        result = self.vimconn._delete_created_items(
+            created_items, volumes_to_hold, keep_waiting
+        )
+        self.assertEqual(result, True)
+        self.assertEqual(mock_get_item_name_id.call_count, 2)
+        mock_delete_volumes_by_id_wth_cinder.assert_called_once_with(
+            f"volume:{volume_id}", f"{volume_id}", volumes_to_hold, created_items
+        )
+        mock_delete_floating_ip_by_id.assert_called_once_with(
+            f"floating_ip:{floating_network_vim_id}",
+            f"{floating_network_vim_id}",
+            created_items,
+        )
+        self.vimconn.logger.error.assert_not_called()
+
+    @patch.object(vimconnector, "_get_item_name_id")
+    @patch.object(vimconnector, "_delete_volumes_by_id_wth_cinder")
+    @patch.object(vimconnector, "_delete_floating_ip_by_id")
+    def test_delete_created_items_wth_keep_waiting_true(
+        self,
+        mock_delete_floating_ip_by_id,
+        mock_delete_volumes_by_id_wth_cinder,
+        mock_get_item_name_id,
+    ):
+        """Keep waiting initial value is True."""
+        created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id}": True,
+            f"port:{port_id}": None,
+        }
+        mock_get_item_name_id.side_effect = [
+            ("floating_ip", f"{floating_network_vim_id}"),
+            ("volume", f"{volume_id}"),
+        ]
+        mock_delete_volumes_by_id_wth_cinder.return_value = False
+        volumes_to_hold = [f"{volume_id}", f"{volume_id2}"]
+        keep_waiting = True
+        result = self.vimconn._delete_created_items(
+            created_items, volumes_to_hold, keep_waiting
+        )
+        self.assertEqual(result, True)
+        self.assertEqual(mock_get_item_name_id.call_count, 2)
+        mock_delete_volumes_by_id_wth_cinder.assert_called_once_with(
+            f"volume:{volume_id}", f"{volume_id}", volumes_to_hold, created_items
+        )
+        mock_delete_floating_ip_by_id.assert_called_once_with(
+            f"floating_ip:{floating_network_vim_id}",
+            f"{floating_network_vim_id}",
+            created_items,
+        )
+        self.vimconn.logger.error.assert_not_called()
+
+    @patch.object(vimconnector, "_get_item_name_id")
+    @patch.object(vimconnector, "_delete_volumes_by_id_wth_cinder")
+    @patch.object(vimconnector, "_delete_floating_ip_by_id")
+    def test_delete_created_items_delete_vol_raises(
+        self,
+        mock_delete_floating_ip_by_id,
+        mock_delete_volumes_by_id_wth_cinder,
+        mock_get_item_name_id,
+    ):
+        """Delete volume raises exception."""
+        created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id}": True,
+            f"port:{port_id}": None,
+        }
+        mock_get_item_name_id.side_effect = [
+            ("floating_ip", f"{floating_network_vim_id}"),
+            ("volume", f"{volume_id}"),
+        ]
+        mock_delete_volumes_by_id_wth_cinder.side_effect = ConnectionError(
+            "Connection failed."
+        )
+        volumes_to_hold = []
+        keep_waiting = False
+        result = self.vimconn._delete_created_items(
+            created_items, volumes_to_hold, keep_waiting
+        )
+        self.assertEqual(result, False)
+        self.assertEqual(mock_get_item_name_id.call_count, 2)
+        mock_delete_volumes_by_id_wth_cinder.assert_called_once_with(
+            f"volume:{volume_id}", f"{volume_id}", [], created_items
+        )
+        mock_delete_floating_ip_by_id.assert_called_once_with(
+            f"floating_ip:{floating_network_vim_id}",
+            f"{floating_network_vim_id}",
+            created_items,
+        )
+        self.vimconn.logger.error.assert_called_once_with(
+            "Error deleting volume:ac408b73-b9cc-4a6a-a270-82cc4811bd4a: Connection failed."
+        )
+
+    @patch.object(vimconnector, "_get_item_name_id")
+    @patch.object(vimconnector, "_delete_volumes_by_id_wth_cinder")
+    @patch.object(vimconnector, "_delete_floating_ip_by_id")
+    def test_delete_created_items_delete_fip_raises(
+        self,
+        mock_delete_floating_ip_by_id,
+        mock_delete_volumes_by_id_wth_cinder,
+        mock_get_item_name_id,
+    ):
+        """Delete floating ip raises exception."""
+        created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id}": True,
+            f"port:{port_id}": None,
+        }
+        mock_get_item_name_id.side_effect = [
+            ("floating_ip", f"{floating_network_vim_id}"),
+            ("volume", f"{volume_id}"),
+        ]
+        mock_delete_volumes_by_id_wth_cinder.return_value = False
+        mock_delete_floating_ip_by_id.side_effect = ConnectionError(
+            "Connection failed."
+        )
+        volumes_to_hold = []
+        keep_waiting = True
+        result = self.vimconn._delete_created_items(
+            created_items, volumes_to_hold, keep_waiting
+        )
+        self.assertEqual(result, True)
+        self.assertEqual(mock_get_item_name_id.call_count, 2)
+        mock_delete_volumes_by_id_wth_cinder.assert_called_once_with(
+            f"volume:{volume_id}", f"{volume_id}", [], created_items
+        )
+        mock_delete_floating_ip_by_id.assert_called_once_with(
+            f"floating_ip:{floating_network_vim_id}",
+            f"{floating_network_vim_id}",
+            created_items,
+        )
+        self.vimconn.logger.error.assert_called_once_with(
+            "Error deleting floating_ip:108b73-e9cc-5a6a-t270-82cc4811bd4a: Connection failed."
+        )
+
+    @patch.object(vimconnector, "_get_item_name_id")
+    @patch.object(vimconnector, "_delete_volumes_by_id_wth_cinder")
+    @patch.object(vimconnector, "_delete_floating_ip_by_id")
+    def test_delete_created_items_get_item_name_raises(
+        self,
+        mock_delete_floating_ip_by_id,
+        mock_delete_volumes_by_id_wth_cinder,
+        mock_get_item_name_id,
+    ):
+        """Get item, name raises exception."""
+        created_items = {
+            3: True,
+            f"volume{volume_id}": True,
+            f"port:{port_id}": None,
+        }
+        mock_get_item_name_id.side_effect = [
+            TypeError("Invalid Type"),
+            AttributeError("Invalid attribute"),
+        ]
+        volumes_to_hold = []
+        keep_waiting = False
+        result = self.vimconn._delete_created_items(
+            created_items, volumes_to_hold, keep_waiting
+        )
+        self.assertEqual(result, False)
+        self.assertEqual(mock_get_item_name_id.call_count, 2)
+        mock_delete_volumes_by_id_wth_cinder.assert_not_called()
+        mock_delete_floating_ip_by_id.assert_not_called()
+        _call_logger = self.vimconn.logger.error.call_args_list
+        self.assertEqual(_call_logger[0][0], ("Error deleting 3: Invalid Type",))
+        self.assertEqual(
+            _call_logger[1][0],
+            (f"Error deleting volume{volume_id}: Invalid attribute",),
+        )
+
+    @patch.object(vimconnector, "_get_item_name_id")
+    @patch.object(vimconnector, "_delete_volumes_by_id_wth_cinder")
+    @patch.object(vimconnector, "_delete_floating_ip_by_id")
+    def test_delete_created_items_no_fip_wth_port(
+        self,
+        mock_delete_floating_ip_by_id,
+        mock_delete_volumes_by_id_wth_cinder,
+        mock_get_item_name_id,
+    ):
+        """Created items has port, does not have floating ip."""
+        created_items = {
+            f"volume:{volume_id}": True,
+            f"port:{port_id}": True,
+        }
+        mock_get_item_name_id.side_effect = [
+            ("volume", f"{volume_id}"),
+            ("port", f"{port_id}"),
+        ]
+        mock_delete_volumes_by_id_wth_cinder.return_value = False
+        volumes_to_hold = []
+        keep_waiting = False
+        result = self.vimconn._delete_created_items(
+            created_items, volumes_to_hold, keep_waiting
+        )
+        self.assertEqual(result, False)
+        self.assertEqual(mock_get_item_name_id.call_count, 2)
+        mock_delete_volumes_by_id_wth_cinder.assert_called_once_with(
+            f"volume:{volume_id}", f"{volume_id}", [], created_items
+        )
+        mock_delete_floating_ip_by_id.assert_not_called()
+        self.vimconn.logger.error.assert_not_called()
+
+    @patch.object(vimconnector, "_get_item_name_id")
+    @patch.object(vimconnector, "_delete_volumes_by_id_wth_cinder")
+    @patch.object(vimconnector, "_delete_floating_ip_by_id")
+    def test_delete_created_items_no_volume(
+        self,
+        mock_delete_floating_ip_by_id,
+        mock_delete_volumes_by_id_wth_cinder,
+        mock_get_item_name_id,
+    ):
+        """Created items does not have volume."""
+        created_items = {
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"port:{port_id}": None,
+        }
+        mock_get_item_name_id.side_effect = [
+            ("floating_ip", f"{floating_network_vim_id}")
+        ]
+        volumes_to_hold = []
+        keep_waiting = False
+        result = self.vimconn._delete_created_items(
+            created_items, volumes_to_hold, keep_waiting
+        )
+        self.assertEqual(result, False)
+        self.assertEqual(mock_get_item_name_id.call_count, 1)
+        mock_delete_volumes_by_id_wth_cinder.assert_not_called()
+        mock_delete_floating_ip_by_id.assert_called_once_with(
+            f"floating_ip:{floating_network_vim_id}",
+            f"{floating_network_vim_id}",
+            created_items,
+        )
+        self.vimconn.logger.error.assert_not_called()
+
+    @patch.object(vimconnector, "_get_item_name_id")
+    @patch.object(vimconnector, "_delete_volumes_by_id_wth_cinder")
+    @patch.object(vimconnector, "_delete_floating_ip_by_id")
+    def test_delete_created_items_already_deleted(
+        self,
+        mock_delete_floating_ip_by_id,
+        mock_delete_volumes_by_id_wth_cinder,
+        mock_get_item_name_id,
+    ):
+        """All created items are alerady deleted."""
+        created_items = {
+            f"floating_ip:{floating_network_vim_id}": None,
+            f"volume:{volume_id}": None,
+            f"port:{port_id}": None,
+        }
+        volumes_to_hold = []
+        keep_waiting = False
+        result = self.vimconn._delete_created_items(
+            created_items, volumes_to_hold, keep_waiting
+        )
+        self.assertEqual(result, False)
+        mock_get_item_name_id.assert_not_called()
+        mock_delete_volumes_by_id_wth_cinder.assert_not_called()
+        mock_delete_floating_ip_by_id.assert_not_called()
+        self.vimconn.logger.error.assert_not_called()
+
+    @patch("time.sleep")
+    @patch.object(vimconnector, "_extract_items_wth_keep_flag_from_created_items")
+    @patch.object(vimconnector, "_format_exception")
+    @patch.object(vimconnector, "_reload_connection")
+    @patch.object(vimconnector, "_delete_vm_ports_attached_to_network")
+    @patch.object(vimconnector, "_delete_created_items")
+    def test_delete_vminstance_successfully(
+        self,
+        mock_delete_created_items,
+        mock_delete_vm_ports_attached_to_network,
+        mock_reload_connection,
+        mock_format_exception,
+        mock_extract_items_wth_keep_flag_from_created_items,
+        mock_sleep,
+    ):
+        vm_id = f"{virtual_mac_id}"
+        created_items = deepcopy(created_items_all_true)
+        mock_extract_items_wth_keep_flag_from_created_items.return_value = created_items
+        volumes_to_hold = [f"{volume_id}", f"{volume_id2}"]
+        mock_delete_created_items.return_value = False
+        self.vimconn.delete_vminstance(vm_id, created_items, volumes_to_hold)
+        mock_reload_connection.assert_called_once()
+        mock_delete_vm_ports_attached_to_network.assert_called_once_with(created_items)
+        self.vimconn.nova.servers.delete.assert_called_once_with(vm_id)
+        mock_delete_created_items.assert_called_once_with(
+            created_items, volumes_to_hold, False
+        )
+        mock_sleep.assert_not_called()
+        mock_format_exception.assert_not_called()
+        mock_extract_items_wth_keep_flag_from_created_items.assert_called_once_with(
+            created_items
+        )
+
+    @patch("time.sleep")
+    @patch.object(vimconnector, "_extract_items_wth_keep_flag_from_created_items")
+    @patch.object(vimconnector, "_format_exception")
+    @patch.object(vimconnector, "_reload_connection")
+    @patch.object(vimconnector, "_delete_vm_ports_attached_to_network")
+    @patch.object(vimconnector, "_delete_created_items")
+    def test_delete_vminstance_created_items_has_keep_flag(
+        self,
+        mock_delete_created_items,
+        mock_delete_vm_ports_attached_to_network,
+        mock_reload_connection,
+        mock_format_exception,
+        mock_extract_items_wth_keep_flag_from_created_items,
+        mock_sleep,
+    ):
+        """Created_items includes items which has keep flag."""
+        vm_id = f"{virtual_mac_id}"
+        initial_created_items = {
+            f"port{port_id}": True,
+            f"floating_ip{floating_network_vim_id}": None,
+            f"volume{volume_id}keep": True,
+            f"volume{volume_id2}keep": True,
+        }
+        created_items = {
+            f"port{port_id}": True,
+            f"floating_ip{floating_network_vim_id}": None,
+        }
+        mock_extract_items_wth_keep_flag_from_created_items.return_value = created_items
+        volumes_to_hold = []
+        mock_delete_created_items.return_value = False
+        self.vimconn.delete_vminstance(vm_id, initial_created_items, volumes_to_hold)
+        mock_reload_connection.assert_called_once()
+        mock_delete_vm_ports_attached_to_network.assert_called_once_with(created_items)
+        self.vimconn.nova.servers.delete.assert_called_once_with(vm_id)
+        mock_delete_created_items.assert_called_once_with(
+            created_items, volumes_to_hold, False
+        )
+        mock_sleep.assert_not_called()
+        mock_format_exception.assert_not_called()
+        mock_extract_items_wth_keep_flag_from_created_items.assert_called_once_with(
+            initial_created_items
+        )
+
+    @patch("time.sleep")
+    @patch.object(vimconnector, "_extract_items_wth_keep_flag_from_created_items")
+    @patch.object(vimconnector, "_format_exception")
+    @patch.object(vimconnector, "_reload_connection")
+    @patch.object(vimconnector, "_delete_vm_ports_attached_to_network")
+    @patch.object(vimconnector, "_delete_created_items")
+    def test_delete_vminstance_extract_items_wth_keep_raises(
+        self,
+        mock_delete_created_items,
+        mock_delete_vm_ports_attached_to_network,
+        mock_reload_connection,
+        mock_format_exception,
+        mock_extract_items_wth_keep_flag_from_created_items,
+        mock_sleep,
+    ):
+        """extract_items_wth_keep_flag_from_created_items raises AttributeError."""
+        vm_id = f"{virtual_mac_id}"
+        initial_created_items = {
+            f"port{port_id}": True,
+            f"floating_ip{floating_network_vim_id}": None,
+            f"volume{volume_id}keep": True,
+            f"volume{volume_id2}keep": True,
+        }
+
+        mock_extract_items_wth_keep_flag_from_created_items.side_effect = AttributeError
+        volumes_to_hold = []
+        mock_delete_created_items.return_value = False
+        with self.assertRaises(AttributeError):
+            self.vimconn.delete_vminstance(
+                vm_id, initial_created_items, volumes_to_hold
+            )
+        mock_reload_connection.assert_not_called()
+        mock_delete_vm_ports_attached_to_network.assert_not_called()
+        self.vimconn.nova.servers.delete.assert_not_called()
+        mock_delete_created_items.assert_not_called()
+        mock_sleep.assert_not_called()
+        mock_format_exception.assert_not_called()
+        mock_extract_items_wth_keep_flag_from_created_items.assert_called_once_with(
+            initial_created_items
+        )
+
+    @patch("time.sleep")
+    @patch.object(vimconnector, "_extract_items_wth_keep_flag_from_created_items")
+    @patch.object(vimconnector, "_format_exception")
+    @patch.object(vimconnector, "_reload_connection")
+    @patch.object(vimconnector, "_delete_vm_ports_attached_to_network")
+    @patch.object(vimconnector, "_delete_created_items")
+    def test_delete_vminstance_delete_created_items_raises(
+        self,
+        mock_delete_created_items,
+        mock_delete_vm_ports_attached_to_network,
+        mock_reload_connection,
+        mock_format_exception,
+        mock_extract_items_wth_keep_flag_from_created_items,
+        mock_sleep,
+    ):
+        """Delete creted items raises exception."""
+        vm_id = f"{virtual_mac_id}"
+        created_items = deepcopy(created_items_all_true)
+        mock_extract_items_wth_keep_flag_from_created_items.return_value = created_items
+        mock_sleep = MagicMock()
+        volumes_to_hold = []
+        err = ConnectionError("ClientException occurred.")
+        mock_delete_created_items.side_effect = err
+        with self.assertRaises(ConnectionError) as err:
+            self.vimconn.delete_vminstance(vm_id, created_items, volumes_to_hold)
+            self.assertEqual(str(err), "ClientException occurred.")
+        mock_reload_connection.assert_called_once()
+        mock_delete_vm_ports_attached_to_network.assert_called_once_with(created_items)
+        self.vimconn.nova.servers.delete.assert_called_once_with(vm_id)
+        mock_delete_created_items.assert_called_once()
+        mock_sleep.assert_not_called()
+        mock_extract_items_wth_keep_flag_from_created_items.assert_called_once_with(
+            created_items
+        )
+
+    @patch("time.sleep")
+    @patch.object(vimconnector, "_extract_items_wth_keep_flag_from_created_items")
+    @patch.object(vimconnector, "_format_exception")
+    @patch.object(vimconnector, "_reload_connection")
+    @patch.object(vimconnector, "_delete_vm_ports_attached_to_network")
+    @patch.object(vimconnector, "_delete_created_items")
+    def test_delete_vminstance_delete_vm_ports_raises(
+        self,
+        mock_delete_created_items,
+        mock_delete_vm_ports_attached_to_network,
+        mock_reload_connection,
+        mock_format_exception,
+        mock_extract_items_wth_keep_flag_from_created_items,
+        mock_sleep,
+    ):
+        """Delete vm ports raises exception."""
+        vm_id = f"{virtual_mac_id}"
+        created_items = deepcopy(created_items_all_true)
+        mock_extract_items_wth_keep_flag_from_created_items.return_value = created_items
+        volumes_to_hold = [f"{volume_id}", f"{volume_id2}"]
+        err = ConnectionError("ClientException occurred.")
+        mock_delete_vm_ports_attached_to_network.side_effect = err
+        mock_delete_created_items.side_effect = err
+        with self.assertRaises(ConnectionError) as err:
+            self.vimconn.delete_vminstance(vm_id, created_items, volumes_to_hold)
+            self.assertEqual(str(err), "ClientException occurred.")
+        mock_reload_connection.assert_called_once()
+        mock_delete_vm_ports_attached_to_network.assert_called_once_with(created_items)
+        self.vimconn.nova.servers.delete.assert_not_called()
+        mock_delete_created_items.assert_not_called()
+        mock_sleep.assert_not_called()
+        mock_extract_items_wth_keep_flag_from_created_items.assert_called_once_with(
+            created_items
+        )
+
+    @patch("time.sleep")
+    @patch.object(vimconnector, "_extract_items_wth_keep_flag_from_created_items")
+    @patch.object(vimconnector, "_format_exception")
+    @patch.object(vimconnector, "_reload_connection")
+    @patch.object(vimconnector, "_delete_vm_ports_attached_to_network")
+    @patch.object(vimconnector, "_delete_created_items")
+    def test_delete_vminstance_nova_server_delete_raises(
+        self,
+        mock_delete_created_items,
+        mock_delete_vm_ports_attached_to_network,
+        mock_reload_connection,
+        mock_format_exception,
+        mock_extract_items_wth_keep_flag_from_created_items,
+        mock_sleep,
+    ):
+        """Nova server delete raises exception."""
+        vm_id = f"{virtual_mac_id}"
+        created_items = deepcopy(created_items_all_true)
+        mock_extract_items_wth_keep_flag_from_created_items.return_value = created_items
+        volumes_to_hold = [f"{volume_id}", f"{volume_id2}"]
+        err = VimConnConnectionException("ClientException occurred.")
+        self.vimconn.nova.servers.delete.side_effect = err
+        mock_delete_created_items.side_effect = err
+        with self.assertRaises(VimConnConnectionException) as err:
+            self.vimconn.delete_vminstance(vm_id, created_items, volumes_to_hold)
+            self.assertEqual(str(err), "ClientException occurred.")
+        mock_reload_connection.assert_called_once()
+        mock_delete_vm_ports_attached_to_network.assert_called_once_with(created_items)
+        self.vimconn.nova.servers.delete.assert_called_once_with(vm_id)
+        mock_delete_created_items.assert_not_called()
+        mock_sleep.assert_not_called()
+        mock_extract_items_wth_keep_flag_from_created_items.assert_called_once_with(
+            created_items
+        )
+
+    @patch("time.sleep")
+    @patch.object(vimconnector, "_extract_items_wth_keep_flag_from_created_items")
+    @patch.object(vimconnector, "_format_exception")
+    @patch.object(vimconnector, "_reload_connection")
+    @patch.object(vimconnector, "_delete_vm_ports_attached_to_network")
+    @patch.object(vimconnector, "_delete_created_items")
+    def test_delete_vminstance_reload_connection_raises(
+        self,
+        mock_delete_created_items,
+        mock_delete_vm_ports_attached_to_network,
+        mock_reload_connection,
+        mock_format_exception,
+        mock_extract_items_wth_keep_flag_from_created_items,
+        mock_sleep,
+    ):
+        """Reload connection raises exception."""
+        vm_id = f"{virtual_mac_id}"
+        created_items = deepcopy(created_items_all_true)
+        mock_extract_items_wth_keep_flag_from_created_items.return_value = created_items
+        mock_sleep = MagicMock()
+        volumes_to_hold = [f"{volume_id}", f"{volume_id2}"]
+        err = ConnectionError("ClientException occurred.")
+        mock_delete_created_items.return_value = False
+        mock_reload_connection.side_effect = err
+        with self.assertRaises(ConnectionError) as err:
+            self.vimconn.delete_vminstance(vm_id, created_items, volumes_to_hold)
+            self.assertEqual(str(err), "ClientException occurred.")
+        mock_reload_connection.assert_called_once()
+        mock_delete_vm_ports_attached_to_network.assert_not_called()
+        self.vimconn.nova.servers.delete.assert_not_called()
+        mock_delete_created_items.assert_not_called()
+        mock_sleep.assert_not_called()
+        mock_extract_items_wth_keep_flag_from_created_items.assert_called_once_with(
+            created_items
+        )
+
+    @patch("time.sleep")
+    @patch.object(vimconnector, "_extract_items_wth_keep_flag_from_created_items")
+    @patch.object(vimconnector, "_format_exception")
+    @patch.object(vimconnector, "_reload_connection")
+    @patch.object(vimconnector, "_delete_vm_ports_attached_to_network")
+    @patch.object(vimconnector, "_delete_created_items")
+    def test_delete_vminstance_created_item_vol_to_hold_are_none(
+        self,
+        mock_delete_created_items,
+        mock_delete_vm_ports_attached_to_network,
+        mock_reload_connection,
+        mock_format_exception,
+        mock_extract_items_wth_keep_flag_from_created_items,
+        mock_sleep,
+    ):
+        """created_items and volumes_to_hold are None."""
+        vm_id = f"{virtual_mac_id}"
+        created_items = None
+        volumes_to_hold = None
+        mock_extract_items_wth_keep_flag_from_created_items.return_value = {}
+        mock_delete_created_items.return_value = False
+        self.vimconn.delete_vminstance(vm_id, created_items, volumes_to_hold)
+        mock_reload_connection.assert_called_once()
+        mock_delete_vm_ports_attached_to_network.assert_not_called()
+        self.vimconn.nova.servers.delete.assert_called_once_with(vm_id)
+        mock_delete_created_items.assert_called_once_with({}, [], False)
+        mock_sleep.assert_not_called()
+        mock_format_exception.assert_not_called()
+        mock_extract_items_wth_keep_flag_from_created_items.assert_called_once_with({})
+
+    @patch("time.sleep")
+    @patch.object(vimconnector, "_extract_items_wth_keep_flag_from_created_items")
+    @patch.object(vimconnector, "_format_exception")
+    @patch.object(vimconnector, "_reload_connection")
+    @patch.object(vimconnector, "_delete_vm_ports_attached_to_network")
+    @patch.object(vimconnector, "_delete_created_items")
+    def test_delete_vminstance_vm_id_is_none(
+        self,
+        mock_delete_created_items,
+        mock_delete_vm_ports_attached_to_network,
+        mock_reload_connection,
+        mock_format_exception,
+        mock_extract_items_wth_keep_flag_from_created_items,
+        mock_sleep,
+    ):
+        """vm_id is None."""
+        vm_id = None
+        created_items = deepcopy(created_items_all_true)
+        mock_extract_items_wth_keep_flag_from_created_items.return_value = created_items
+        volumes_to_hold = [f"{volume_id}", f"{volume_id2}"]
+        mock_delete_created_items.side_effect = [True, True, False]
+        self.vimconn.delete_vminstance(vm_id, created_items, volumes_to_hold)
+        mock_reload_connection.assert_called_once()
+        mock_delete_vm_ports_attached_to_network.assert_called_once_with(created_items)
+        self.vimconn.nova.servers.delete.assert_not_called()
+        self.assertEqual(mock_delete_created_items.call_count, 3)
+        self.assertEqual(mock_sleep.call_count, 2)
+        mock_format_exception.assert_not_called()
+        mock_extract_items_wth_keep_flag_from_created_items.assert_called_once_with(
+            created_items
+        )
+
+    @patch("time.sleep")
+    @patch.object(vimconnector, "_extract_items_wth_keep_flag_from_created_items")
+    @patch.object(vimconnector, "_format_exception")
+    @patch.object(vimconnector, "_reload_connection")
+    @patch.object(vimconnector, "_delete_vm_ports_attached_to_network")
+    @patch.object(vimconnector, "_delete_created_items")
+    def test_delete_vminstance_delete_created_items_return_true(
+        self,
+        mock_delete_created_items,
+        mock_delete_vm_ports_attached_to_network,
+        mock_reload_connection,
+        mock_format_exception,
+        mock_extract_items_wth_keep_flag_from_created_items,
+        mock_sleep,
+    ):
+        """Delete created items always return True."""
+        vm_id = None
+        created_items = deepcopy(created_items_all_true)
+        mock_extract_items_wth_keep_flag_from_created_items.return_value = created_items
+        volumes_to_hold = [f"{volume_id}", f"{volume_id2}"]
+        mock_delete_created_items.side_effect = [True] * 1800
+        self.vimconn.delete_vminstance(vm_id, created_items, volumes_to_hold)
+        mock_reload_connection.assert_called_once()
+        mock_delete_vm_ports_attached_to_network.assert_called_once_with(created_items)
+        self.vimconn.nova.servers.delete.assert_not_called()
+        self.assertEqual(mock_delete_created_items.call_count, 1800)
+        self.assertEqual(mock_sleep.call_count, 1800)
+        mock_format_exception.assert_not_called()
+        mock_extract_items_wth_keep_flag_from_created_items.assert_called_once_with(
+            created_items
+        )
+
+    def test_remove_keep_tag_from_persistent_volumes_keep_flag_exists(self):
+        """Keep flag exists in created items."""
+        created_items = {
+            f"port:{port_id}": True,
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id}:keep": True,
+            f"volume:{volume_id2}:keep": True,
+        }
+        expected_result = {
+            f"port:{port_id}": True,
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id}": True,
+            f"volume:{volume_id2}": True,
+        }
+        result = self.vimconn.remove_keep_tag_from_persistent_volumes(created_items)
+        self.assertDictEqual(result, expected_result)
+
+    def test_remove_keep_tag_from_persistent_volumes_without_keep_flag(self):
+        """Keep flag does not exist in created items."""
+        created_items = {
+            f"port:{port_id}": True,
+            f"floating_ip:{floating_network_vim_id}": True,
+            f"volume:{volume_id}": True,
+            f"volume:{volume_id2}": True,
+        }
+        result = self.vimconn.remove_keep_tag_from_persistent_volumes(created_items)
+        self.assertDictEqual(result, created_items)
+
+    def test_update_block_device_mapping_empty_volume(self):
+        """"""
+        volume = ""
+        block_device_mapping = {}
+        base_disk_index = 100
+        disk = {}
+        created_items = {}
+        with self.assertRaises(VimConnException) as err:
+            self.vimconn.update_block_device_mapping(
+                volume, block_device_mapping, base_disk_index, disk, created_items
+            )
+            self.assertEqual(str(err), "Volume is empty.")
+        self.assertEqual(block_device_mapping, {})
+        self.assertEqual(created_items, {})
+
+    def test_update_block_device_mapping_invalid_volume(self):
+        """"""
+        volume = "Volume-A"
+        block_device_mapping = {}
+        base_disk_index = 100
+        disk = {}
+        created_items = {}
+        with self.assertRaises(VimConnException) as err:
+            self.vimconn.update_block_device_mapping(
+                volume, block_device_mapping, base_disk_index, disk, created_items
+            )
+            self.assertEqual(
+                str(err), "Created volume is not valid, does not have id attribute."
+            )
+        self.assertEqual(block_device_mapping, {})
+        self.assertEqual(created_items, {})
+
+    def test_update_block_device_mapping(self):
+        """"""
+        volume = MagicMock(autospec=True)
+        volume.id = volume_id
+        block_device_mapping = {}
+        base_disk_index = 100
+        disk = {}
+        created_items = {}
+        self.vimconn.update_block_device_mapping(
+            volume, block_device_mapping, base_disk_index, disk, created_items
+        )
+        self.assertEqual(
+            block_device_mapping, {"vdd": "ac408b73-b9cc-4a6a-a270-82cc4811bd4a"}
+        )
+        self.assertEqual(
+            created_items, {"volume:ac408b73-b9cc-4a6a-a270-82cc4811bd4a": True}
+        )
+
+    def test_update_block_device_mapping_with_keep_flag(self):
+        """"""
+        volume = MagicMock(autospec=True)
+        volume.id = volume_id
+        block_device_mapping = {}
+        base_disk_index = 100
+        disk = {"size": 10, "keep": True}
+        created_items = {}
+        self.vimconn.update_block_device_mapping(
+            volume, block_device_mapping, base_disk_index, disk, created_items
+        )
+        self.assertEqual(
+            block_device_mapping, {"vdd": "ac408b73-b9cc-4a6a-a270-82cc4811bd4a"}
+        )
+        self.assertEqual(
+            created_items, {"volume:ac408b73-b9cc-4a6a-a270-82cc4811bd4a:keep": True}
+        )
+
+    def test_extract_items_with_keep_flag_item_has_keep_flag(self):
+        created_items = deepcopy(created_items_all_true)
+        created_items[f"volume:{volume_id2}:keep"] = True
+        result = self.vimconn._extract_items_wth_keep_flag_from_created_items(
+            created_items
+        )
+        self.assertEqual(result, deepcopy(created_items_all_true))
+
+    def test_extract_items_with_keep_flag_no_item_wth_keep_flag(self):
+        created_items = deepcopy(created_items_all_true)
+        result = self.vimconn._extract_items_wth_keep_flag_from_created_items(
+            created_items
+        )
+        self.assertEqual(result, deepcopy(created_items_all_true))
+
+    def test_extract_items_with_keep_flag_all_items_are_already_deleted(self):
+        created_items = {
+            f"port:{port_id}": None,
+            f"floating_ip:{floating_network_vim_id}": None,
+            f"volume:{volume_id}:keep": None,
+            f"volume:{volume_id2}:keep": None,
+        }
+        expected_result = {
+            f"port:{port_id}": None,
+            f"floating_ip:{floating_network_vim_id}": None,
+        }
+        result = self.vimconn._extract_items_wth_keep_flag_from_created_items(
+            created_items
+        )
+        self.assertEqual(result, expected_result)
+
+    def test_extract_items_with_keep_flag_without_semicolon(self):
+        created_items = {
+            f"port{port_id}": True,
+            f"floating_ip{floating_network_vim_id}": None,
+            f"volume{volume_id}keep": True,
+            f"volume{volume_id2}keep": True,
+        }
+        result = self.vimconn._extract_items_wth_keep_flag_from_created_items(
+            created_items
+        )
+        self.assertEqual(result, {})
+
+    def test_extract_items_with_keep_flag_invalid_type_created_items(self):
+        created_items = [{f"port{port_id}": True}, {f"volume{volume_id2}keep": True}]
+        with self.assertRaises(AttributeError):
+            self.vimconn._extract_items_wth_keep_flag_from_created_items(created_items)
+
+
+class TestNewFlavor(unittest.TestCase):
+    @patch("logging.getLogger", autospec=True)
+    def setUp(self, mock_logger):
+        # We are disabling the logging of exception not to print them to console.
+        mock_logger = logging.getLogger()
+        mock_logger.disabled = True
+        self.vimconn = vimconnector(
+            "123",
+            "openstackvim",
+            "456",
+            "789",
+            "http://dummy.url",
+            None,
+            "user",
+            "pass",
+        )
+        self.vimconn.nova = CopyingMock(autospec=True)
+        self.flavor1 = CopyingMock(autospec=True, name="sample-flavor")
+        self.flavor2 = CopyingMock(autospec=True, name="other-flavor")
+        self.new_flavor = CopyingMock(autospec=True, name="new_flavor")
+        self.new_flavor.id = "075d2482-5edb-43e3-91b3-234e65b6268a"
+        self.vimconn.nova.flavors.create.return_value = self.new_flavor
+
+    @staticmethod
+    def check_if_assert_not_called(mocks: list):
+        for mocking in mocks:
+            mocking.assert_not_called()
+
+    @patch.object(vimconnector, "process_numa_memory", new_callable=CopyingMock())
+    @patch.object(vimconnector, "process_numa_vcpu", new_callable=CopyingMock())
+    @patch.object(
+        vimconnector,
+        "process_numa_paired_threads",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "process_numa_cores", new_callable=CopyingMock())
+    @patch.object(vimconnector, "process_numa_threads", new_callable=CopyingMock())
+    def test_process_numa_parameters_of_flavor_id_memory_vcpu_in_numa_type_vio(
+        self,
+        mock_process_numa_threads,
+        mock_process_numa_cores,
+        mock_process_numa_paired_threads,
+        mock_process_numa_vcpu,
+        mock_process_numa_memory,
+    ):
+        """Process numa parameters, id, memory, vcpu exist, vim type is VIO,
+        paired-threads, cores, threads do not exist in numa.
+        """
+        numas = [
+            {"id": 0, "memory": 1, "vcpu": [1, 3]},
+            {"id": 1, "memory": 2, "vcpu": [2]},
+        ]
+        extra_specs = {}
+        expected_extra_specs = {
+            "hw:numa_nodes": "2",
+            "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
+            "vmware:latency_sensitivity_level": "high",
+            "hw:cpu_sockets": "2",
+        }
+        self.vimconn.vim_type = "VIO"
+        self.vimconn._process_numa_parameters_of_flavor(numas, extra_specs)
+
+        self.assertEqual(mock_process_numa_memory.call_count, 2)
+        self.assertEqual(mock_process_numa_vcpu.call_count, 2)
+        _call_mock_process_numa_memory = mock_process_numa_memory.call_args_list
+        self.assertEqual(
+            _call_mock_process_numa_memory[0].args,
+            (
+                {"id": 0, "memory": 1, "vcpu": [1, 3]},
+                0,
+                {
+                    "hw:numa_nodes": "2",
+                    "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
+                    "vmware:latency_sensitivity_level": "high",
+                },
+            ),
+        )
+        self.assertEqual(
+            _call_mock_process_numa_memory[1].args,
+            (
+                {"id": 1, "memory": 2, "vcpu": [2]},
+                1,
+                {
+                    "hw:cpu_sockets": "2",
+                    "hw:numa_nodes": "2",
+                    "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
+                    "vmware:latency_sensitivity_level": "high",
+                },
+            ),
+        )
+        _call_mock_process_numa_vcpu = mock_process_numa_vcpu.call_args_list
+        self.assertEqual(
+            _call_mock_process_numa_vcpu[0].args,
+            (
+                {"id": 0, "memory": 1, "vcpu": [1, 3]},
+                0,
+                {
+                    "hw:numa_nodes": "2",
+                    "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
+                    "vmware:latency_sensitivity_level": "high",
+                },
+            ),
+        )
+        self.assertEqual(
+            _call_mock_process_numa_vcpu[1].args,
+            (
+                {"id": 1, "memory": 2, "vcpu": [2]},
+                1,
+                {
+                    "hw:cpu_sockets": "2",
+                    "hw:numa_nodes": "2",
+                    "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
+                    "vmware:latency_sensitivity_level": "high",
+                },
+            ),
+        )
+        self.assertDictEqual(extra_specs, expected_extra_specs)
+        self.check_if_assert_not_called(
+            [
+                mock_process_numa_threads,
+                mock_process_numa_cores,
+                mock_process_numa_paired_threads,
+            ]
+        )
+
+    @patch.object(vimconnector, "process_numa_memory", new_callable=CopyingMock())
+    @patch.object(vimconnector, "process_numa_vcpu", new_callable=CopyingMock())
+    @patch.object(
+        vimconnector,
+        "process_numa_paired_threads",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "process_numa_cores", new_callable=CopyingMock())
+    @patch.object(vimconnector, "process_numa_threads", new_callable=CopyingMock())
+    def test_process_numa_parameters_of_flavor_id_memory_vcpu_in_numa_type_openstack(
+        self,
+        mock_process_numa_threads,
+        mock_process_numa_cores,
+        mock_process_numa_paired_threads,
+        mock_process_numa_vcpu,
+        mock_process_numa_memory,
+    ):
+        """Process numa parameters, id, memory, vcpu exist, vim type is openstack,
+        paired-threads, cores, threads do not exist in numa.
+        """
+        numas = [
+            {"id": 0, "memory": 1, "vcpu": [1, 3]},
+            {"id": 1, "memory": 2, "vcpu": [2]},
+        ]
+        extra_specs = {}
+        expected_extra_specs = {
+            "hw:numa_nodes": "2",
+            "hw:cpu_sockets": "2",
+        }
+        self.vimconn.vim_type = "openstack"
+        self.vimconn._process_numa_parameters_of_flavor(numas, extra_specs)
+
+        self.assertEqual(mock_process_numa_memory.call_count, 2)
+        self.assertEqual(mock_process_numa_vcpu.call_count, 2)
+        _call_mock_process_numa_memory = mock_process_numa_memory.call_args_list
+        self.assertEqual(
+            _call_mock_process_numa_memory[0].args,
+            (
+                {"id": 0, "memory": 1, "vcpu": [1, 3]},
+                0,
+                {"hw:numa_nodes": "2"},
+            ),
+        )
+        self.assertEqual(
+            _call_mock_process_numa_memory[1].args,
+            (
+                {"id": 1, "memory": 2, "vcpu": [2]},
+                1,
+                {"hw:cpu_sockets": "2", "hw:numa_nodes": "2"},
+            ),
+        )
+        _call_mock_process_numa_vcpu = mock_process_numa_vcpu.call_args_list
+        self.assertEqual(
+            _call_mock_process_numa_vcpu[0].args,
+            (
+                {"id": 0, "memory": 1, "vcpu": [1, 3]},
+                0,
+                {"hw:numa_nodes": "2"},
+            ),
+        )
+        self.assertEqual(
+            _call_mock_process_numa_vcpu[1].args,
+            (
+                {"id": 1, "memory": 2, "vcpu": [2]},
+                1,
+                {"hw:cpu_sockets": "2", "hw:numa_nodes": "2"},
+            ),
+        )
+        self.assertDictEqual(extra_specs, expected_extra_specs)
+        self.check_if_assert_not_called(
+            [
+                mock_process_numa_threads,
+                mock_process_numa_cores,
+                mock_process_numa_paired_threads,
+            ]
+        )
+
+    @patch.object(vimconnector, "process_numa_memory", new_callable=CopyingMock())
+    @patch.object(vimconnector, "process_numa_vcpu", new_callable=CopyingMock())
+    @patch.object(
+        vimconnector,
+        "process_numa_paired_threads",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "process_numa_cores", new_callable=CopyingMock())
+    @patch.object(vimconnector, "process_numa_threads", new_callable=CopyingMock())
+    def test_process_numa_parameters_of_flavor_id_paired_threads_in_numa_type_openstack_extra_spec_not_empty(
+        self,
+        mock_process_numa_threads,
+        mock_process_numa_cores,
+        mock_process_numa_paired_threads,
+        mock_process_numa_vcpu,
+        mock_process_numa_memory,
+    ):
+        """Process numa parameters, id, paired-threads exist, vim type is openstack.
+        vcpus calculation according to paired-threads in numa, there is extra_spec.
+        ."""
+        numas = [{"id": 0, "paired-threads": 3}, {"id": 1, "paired-threads": 3}]
+        extra_specs = {"some-key": "some-value"}
+        expected_extra_specs = {
+            "hw:cpu_sockets": "2",
+            "hw:cpu_threads": "12",
+            "hw:numa_nodes": "2",
+            "some-key": "some-value",
+        }
+        self.vimconn.vim_type = "openstack"
+        mock_process_numa_paired_threads.side_effect = [6, 6]
+        self.vimconn._process_numa_parameters_of_flavor(numas, extra_specs)
+
+        self.check_if_assert_not_called(
+            [mock_process_numa_threads, mock_process_numa_cores]
+        )
+        self.assertEqual(mock_process_numa_memory.call_count, 2)
+        self.assertEqual(mock_process_numa_vcpu.call_count, 2)
+        self.assertEqual(mock_process_numa_paired_threads.call_count, 2)
+        _call_mock_process_numa_paired_threads = (
+            mock_process_numa_paired_threads.call_args_list
+        )
+        self.assertEqual(
+            _call_mock_process_numa_paired_threads[0].args,
+            (
+                {"id": 0, "paired-threads": 3},
+                {"hw:cpu_sockets": "2", "hw:numa_nodes": "2", "some-key": "some-value"},
+            ),
+        )
+        self.assertEqual(
+            _call_mock_process_numa_paired_threads[1].args,
+            (
+                {"id": 1, "paired-threads": 3},
+                {"hw:cpu_sockets": "2", "hw:numa_nodes": "2", "some-key": "some-value"},
+            ),
+        )
+        self.assertDictEqual(extra_specs, expected_extra_specs)
+
+    @patch.object(vimconnector, "process_numa_memory", new_callable=CopyingMock())
+    @patch.object(vimconnector, "process_numa_vcpu", new_callable=CopyingMock())
+    @patch.object(
+        vimconnector,
+        "process_numa_paired_threads",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "process_numa_cores", new_callable=CopyingMock())
+    @patch.object(vimconnector, "process_numa_threads", new_callable=CopyingMock())
+    def test_process_numa_parameters_of_flavor_id_paired_threads_in_numa_type_vio_extra_spec_not_empty(
+        self,
+        mock_process_numa_threads,
+        mock_process_numa_cores,
+        mock_process_numa_paired_threads,
+        mock_process_numa_vcpu,
+        mock_process_numa_memory,
+    ):
+        """Process numa parameters, id, paired-threads exist, vim type is VIO.
+        vcpus calculation according to paired-threads in numa, there is extra_spec.
+        """
+        numas = [{"id": 0, "paired-threads": 2}, {"id": 1, "paired-threads": 2}]
+        extra_specs = {"some-key": "some-value"}
+        expected_extra_specs = {
+            "hw:numa_nodes": "2",
+            "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
+            "vmware:latency_sensitivity_level": "high",
+            "hw:cpu_sockets": "2",
+            "hw:cpu_threads": "8",
+            "some-key": "some-value",
+        }
+        self.vimconn.vim_type = "VIO"
+        mock_process_numa_paired_threads.side_effect = [4, 4]
+        self.vimconn._process_numa_parameters_of_flavor(numas, extra_specs)
+        self.check_if_assert_not_called(
+            [mock_process_numa_threads, mock_process_numa_cores]
+        )
+        self.assertEqual(mock_process_numa_paired_threads.call_count, 2)
+        self.assertEqual(mock_process_numa_memory.call_count, 2)
+        self.assertEqual(mock_process_numa_vcpu.call_count, 2)
+        _call_mock_process_numa_paired_threads = (
+            mock_process_numa_paired_threads.call_args_list
+        )
+        self.assertEqual(
+            _call_mock_process_numa_paired_threads[0].args,
+            (
+                {"id": 0, "paired-threads": 2},
+                {
+                    "hw:cpu_sockets": "2",
+                    "hw:numa_nodes": "2",
+                    "some-key": "some-value",
+                    "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
+                    "vmware:latency_sensitivity_level": "high",
+                },
+            ),
+        )
+        self.assertEqual(
+            _call_mock_process_numa_paired_threads[1].args,
+            (
+                {"id": 1, "paired-threads": 2},
+                {
+                    "hw:cpu_sockets": "2",
+                    "hw:numa_nodes": "2",
+                    "some-key": "some-value",
+                    "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
+                    "vmware:latency_sensitivity_level": "high",
+                },
+            ),
+        )
+        self.assertDictEqual(extra_specs, expected_extra_specs)
+
+    @patch.object(vimconnector, "process_numa_memory", new_callable=CopyingMock())
+    @patch.object(vimconnector, "process_numa_vcpu", new_callable=CopyingMock())
+    @patch.object(
+        vimconnector,
+        "process_numa_paired_threads",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "process_numa_cores", new_callable=CopyingMock())
+    @patch.object(vimconnector, "process_numa_threads", new_callable=CopyingMock())
+    def test_process_numa_parameters_of_flavor_id_cores_in_numa_type_openstack(
+        self,
+        mock_process_numa_threads,
+        mock_process_numa_cores,
+        mock_process_numa_paired_threads,
+        mock_process_numa_vcpu,
+        mock_process_numa_memory,
+    ):
+        """Process numa parameters, id, cores exist, vim type is openstack.
+        vcpus calculation according to cores in numa.
+        """
+        numas = [{"id": 0, "cores": 1}, {"id": 1, "cores": 2}]
+        extra_specs = {}
+        updated_extra_specs = {"hw:numa_nodes": "2", "hw:cpu_sockets": "2"}
+        expected_extra_specs = {
+            "hw:numa_nodes": "2",
+            "hw:cpu_sockets": "2",
+            "hw:cpu_cores": "3",
+        }
+        self.vimconn.vim_type = "openstack"
+        mock_process_numa_cores.side_effect = [1, 2]
+        self.vimconn._process_numa_parameters_of_flavor(numas, extra_specs)
+
+        self.check_if_assert_not_called(
+            [mock_process_numa_threads, mock_process_numa_paired_threads]
+        )
+        self.assertEqual(mock_process_numa_cores.call_count, 2)
+        self.assertEqual(mock_process_numa_memory.call_count, 2)
+        self.assertEqual(mock_process_numa_vcpu.call_count, 2)
+        _call_mock_process_numa_cores = mock_process_numa_cores.call_args_list
+        self.assertEqual(
+            _call_mock_process_numa_cores[0].args,
+            ({"id": 0, "cores": 1}, updated_extra_specs),
+        )
+        self.assertEqual(
+            _call_mock_process_numa_cores[1].args,
+            ({"id": 1, "cores": 2}, updated_extra_specs),
+        )
+        self.assertDictEqual(extra_specs, expected_extra_specs)
+
+    @patch.object(vimconnector, "process_numa_memory", new_callable=CopyingMock())
+    @patch.object(vimconnector, "process_numa_vcpu", new_callable=CopyingMock())
+    @patch.object(
+        vimconnector,
+        "process_numa_paired_threads",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "process_numa_cores", new_callable=CopyingMock())
+    @patch.object(vimconnector, "process_numa_threads", new_callable=CopyingMock())
+    def test_process_numa_parameters_of_flavor_id_cores_in_numa_type_vio(
+        self,
+        mock_process_numa_threads,
+        mock_process_numa_cores,
+        mock_process_numa_paired_threads,
+        mock_process_numa_vcpu,
+        mock_process_numa_memory,
+    ):
+        """Process numa parameters, id, cores exist, vim type is VIO.
+        vcpus calculation according to cores in numa.
+        """
+        numas = [{"id": 0, "cores": 1}, {"id": 1, "cores": 2}]
+        extra_specs = {}
+        expected_extra_specs = {
+            "hw:cpu_cores": "3",
+            "hw:cpu_sockets": "2",
+            "hw:numa_nodes": "2",
+            "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
+            "vmware:latency_sensitivity_level": "high",
+        }
+        self.vimconn.vim_type = "VIO"
+        mock_process_numa_cores.side_effect = [1, 2]
+        self.vimconn._process_numa_parameters_of_flavor(numas, extra_specs)
+        self.check_if_assert_not_called(
+            [mock_process_numa_threads, mock_process_numa_paired_threads]
+        )
+        self.assertEqual(mock_process_numa_memory.call_count, 2)
+        self.assertEqual(mock_process_numa_vcpu.call_count, 2)
+        self.assertEqual(mock_process_numa_cores.call_count, 2)
+        _call_mock_process_numa_cores = mock_process_numa_cores.call_args_list
+        self.assertEqual(
+            _call_mock_process_numa_cores[0].args,
+            (
+                {"id": 0, "cores": 1},
+                {
+                    "hw:cpu_sockets": "2",
+                    "hw:numa_nodes": "2",
+                    "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
+                    "vmware:latency_sensitivity_level": "high",
+                },
+            ),
+        )
+        self.assertEqual(
+            _call_mock_process_numa_cores[1].args,
+            (
+                {"id": 1, "cores": 2},
+                {
+                    "hw:cpu_sockets": "2",
+                    "hw:numa_nodes": "2",
+                    "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
+                    "vmware:latency_sensitivity_level": "high",
+                },
+            ),
+        )
+        self.assertDictEqual(extra_specs, expected_extra_specs)
+
+    @patch.object(vimconnector, "process_numa_memory", new_callable=CopyingMock())
+    @patch.object(vimconnector, "process_numa_vcpu", new_callable=CopyingMock())
+    @patch.object(
+        vimconnector,
+        "process_numa_paired_threads",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "process_numa_cores", new_callable=CopyingMock())
+    @patch.object(vimconnector, "process_numa_threads", new_callable=CopyingMock())
+    def test_process_numa_parameters_of_flavor_without_numa_id_with_threads_type_vio(
+        self,
+        mock_process_numa_threads,
+        mock_process_numa_cores,
+        mock_process_numa_paired_threads,
+        mock_process_numa_vcpu,
+        mock_process_numa_memory,
+    ):
+        """Process numa parameters, memory, vcpu, thread exist, vim type is VIO,
+        vcpus calculation according threads in numa, there are not numa ids.
+        """
+        numas = [
+            {"memory": 1, "vcpu": [1, 3], "threads": 3},
+            {"memory": 2, "vcpu": [2]},
+        ]
+        extra_specs = {}
+        expected_extra_specs = {
+            "hw:numa_nodes": "2",
+            "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
+            "vmware:latency_sensitivity_level": "high",
+            "hw:cpu_sockets": "2",
+            "hw:cpu_threads": "3",
+        }
+        self.vimconn.vim_type = "VIO"
+        mock_process_numa_threads.return_value = 3
+        self.vimconn._process_numa_parameters_of_flavor(numas, extra_specs)
+        self.check_if_assert_not_called(
+            [
+                mock_process_numa_memory,
+                mock_process_numa_vcpu,
+                mock_process_numa_cores,
+                mock_process_numa_paired_threads,
+            ]
+        )
+        self.assertEqual(mock_process_numa_threads.call_count, 1)
+        _call_mock_process_numa_threads = mock_process_numa_threads.call_args_list
+        self.assertEqual(
+            _call_mock_process_numa_threads[0].args,
+            (
+                {"memory": 1, "vcpu": [1, 3], "threads": 3},
+                {
+                    "hw:cpu_sockets": "2",
+                    "hw:numa_nodes": "2",
+                    "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
+                    "vmware:latency_sensitivity_level": "high",
+                },
+            ),
+        )
+        self.assertDictEqual(extra_specs, expected_extra_specs)
+
+    @patch.object(vimconnector, "process_numa_memory", new_callable=CopyingMock())
+    @patch.object(vimconnector, "process_numa_vcpu", new_callable=CopyingMock())
+    @patch.object(
+        vimconnector,
+        "process_numa_paired_threads",
+        new_callable=CopyingMock(autospec=True),
+    )
+    @patch.object(vimconnector, "process_numa_cores", new_callable=CopyingMock())
+    @patch.object(vimconnector, "process_numa_threads", new_callable=CopyingMock())
+    def test_process_numa_parameters_of_flavor_without_numa_id_with_threads_type_openstack(
+        self,
+        mock_process_numa_threads,
+        mock_process_numa_cores,
+        mock_process_numa_paired_threads,
+        mock_process_numa_vcpu,
+        mock_process_numa_memory,
+    ):
+        """Process numa parameters, memory, vcpu, thread exist, vim type is openstack,
+        vcpus calculation according threads in numa, there are not numa ids.
+        """
+        numas = [
+            {"memory": 1, "vcpu": [1, 3], "threads": 3},
+            {"memory": 2, "vcpu": [2]},
+        ]
+        extra_specs = {}
+        expected_extra_specs = {
+            "hw:numa_nodes": "2",
+            "hw:cpu_sockets": "2",
+            "hw:cpu_threads": "3",
+        }
+        self.vimconn.vim_type = "openstack"
+        mock_process_numa_threads.return_value = 3
+        self.vimconn._process_numa_parameters_of_flavor(numas, extra_specs)
+
+        self.check_if_assert_not_called(
+            [
+                mock_process_numa_memory,
+                mock_process_numa_vcpu,
+                mock_process_numa_cores,
+                mock_process_numa_paired_threads,
+            ]
+        )
+        self.assertEqual(mock_process_numa_threads.call_count, 1)
+        _call_mock_process_numa_threads = mock_process_numa_threads.call_args_list
+        self.assertEqual(
+            _call_mock_process_numa_threads[0].args,
+            (
+                {"memory": 1, "vcpu": [1, 3], "threads": 3},
+                {"hw:cpu_sockets": "2", "hw:numa_nodes": "2"},
+            ),
+        )
+        self.assertDictEqual(extra_specs, expected_extra_specs)
+
+    @patch.object(vimconnector, "process_numa_memory", new_callable=CopyingMock())
+    @patch.object(vimconnector, "process_numa_vcpu", new_callable=CopyingMock())
+    @patch.object(
+        vimconnector,
+        "process_numa_paired_threads",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "process_numa_cores", new_callable=CopyingMock())
+    @patch.object(vimconnector, "process_numa_threads", new_callable=CopyingMock())
+    def test_process_numa_parameters_of_flavor_empty_numas_list_type_vio(
+        self,
+        mock_process_numa_threads,
+        mock_process_numa_cores,
+        mock_process_numa_paired_threads,
+        mock_process_numa_vcpu,
+        mock_process_numa_memory,
+    ):
+        """Numa list is empty, vim type is VIO."""
+        numas = []
+        extra_specs = {}
+        expected_extra_specs = {
+            "hw:numa_nodes": "0",
+            "vmware:extra_config": '{"numa.nodeAffinity":"0"}',
+            "vmware:latency_sensitivity_level": "high",
+        }
+        self.vimconn.vim_type = "VIO"
+        self.vimconn._process_numa_parameters_of_flavor(numas, extra_specs)
+        self.check_if_assert_not_called(
+            [
+                mock_process_numa_memory,
+                mock_process_numa_vcpu,
+                mock_process_numa_cores,
+                mock_process_numa_paired_threads,
+                mock_process_numa_threads,
+            ]
+        )
+        self.assertDictEqual(extra_specs, expected_extra_specs)
+
+    @patch.object(vimconnector, "process_numa_memory", new_callable=CopyingMock())
+    @patch.object(vimconnector, "process_numa_vcpu", new_callable=CopyingMock())
+    @patch.object(
+        vimconnector,
+        "process_numa_paired_threads",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "process_numa_cores", new_callable=CopyingMock())
+    @patch.object(vimconnector, "process_numa_threads", new_callable=CopyingMock())
+    def test_process_numa_parameters_of_flavor_empty_numas_list_type_openstack(
+        self,
+        mock_process_numa_threads,
+        mock_process_numa_cores,
+        mock_process_numa_paired_threads,
+        mock_process_numa_vcpu,
+        mock_process_numa_memory,
+    ):
+        """Numa list is empty, vim type is openstack."""
+        numas = []
+        extra_specs = {}
+        expected_extra_specs = {"hw:numa_nodes": "0"}
+        self.vimconn.vim_type = "openstack"
+        mock_process_numa_threads.return_value = None
+        self.vimconn._process_numa_parameters_of_flavor(numas, extra_specs)
+
+        self.check_if_assert_not_called(
+            [
+                mock_process_numa_memory,
+                mock_process_numa_vcpu,
+                mock_process_numa_cores,
+                mock_process_numa_paired_threads,
+                mock_process_numa_threads,
+            ]
+        )
+        self.assertDictEqual(extra_specs, expected_extra_specs)
+
+    def test_process_numa_memory_empty_extra_spec(self):
+        numa = {"memory": 2, "vcpu": [2]}
+        node_id = 2
+        extra_specs = {}
+        expected_extra_spec = {"hw:numa_mem.2": 2048}
+        self.vimconn.process_numa_memory(numa, node_id, extra_specs)
+        self.assertDictEqual(extra_specs, expected_extra_spec)
+
+    def test_process_numa_memory_not_exist(self):
+        numa = {"vcpu": [2]}
+        node_id = 2
+        extra_specs = {"vmware:latency_sensitivity_level": "high"}
+        self.vimconn.process_numa_memory(numa, node_id, extra_specs)
+        self.assertDictEqual(extra_specs, {"vmware:latency_sensitivity_level": "high"})
+
+    def test_process_numa_memory_node_id_is_none(self):
+        numa = {"memory": 2, "vcpu": [2]}
+        node_id = None
+        extra_specs = {}
+        expected_extra_spec = {"hw:numa_mem.None": 2048}
+        self.vimconn.process_numa_memory(numa, node_id, extra_specs)
+        self.assertDictEqual(extra_specs, expected_extra_spec)
+
+    def test_process_numa_vcpu_empty_extra_spec(self):
+        numa = {"vcpu": [2]}
+        node_id = 0
+        extra_specs = {}
+        expected_extra_spec = {"hw:numa_cpus.0": "2"}
+        self.vimconn.process_numa_vcpu(numa, node_id, extra_specs)
+        self.assertDictEqual(extra_specs, expected_extra_spec)
+
+    def test_process_numa_vcpu_not_exist(self):
+        numa = {"memory": 2}
+        node_id = 0
+        extra_specs = {"vmware:latency_sensitivity_level": "high"}
+        expected_extra_spec = {"vmware:latency_sensitivity_level": "high"}
+        self.vimconn.process_numa_vcpu(numa, node_id, extra_specs)
+        self.assertDictEqual(extra_specs, expected_extra_spec)
+
+    def test_process_numa_vcpu_empty_node_id(self):
+        numa = {"vcpu": [2]}
+        node_id = ""
+        extra_specs = {}
+        expected_extra_spec = {"hw:numa_cpus.": "2"}
+        self.vimconn.process_numa_vcpu(numa, node_id, extra_specs)
+        self.assertDictEqual(extra_specs, expected_extra_spec)
+
+    def test_process_numa_vcpu_empty_numa_dict(self):
+        numa = {}
+        node_id = 4
+        extra_specs = {}
+        self.vimconn.process_numa_vcpu(numa, node_id, extra_specs)
+        self.assertDictEqual(extra_specs, {})
+
+    def test_process_numa_vcpu_str_node_id(self):
+        numa = {"vcpu": [2]}
+        node_id = "12"
+        extra_specs = {}
+        expected_extra_spec = {"hw:numa_cpus.12": "2"}
+        self.vimconn.process_numa_vcpu(numa, node_id, extra_specs)
+        self.assertDictEqual(extra_specs, expected_extra_spec)
+
+    def test_process_numa_paired_threads_empty_extra_spec(self):
+        numa = {"id": 0, "paired-threads": 3}
+        extra_specs = {}
+        expected_extra_spec = {
+            "hw:cpu_thread_policy": "require",
+            "hw:cpu_policy": "dedicated",
+        }
+        result = self.vimconn.process_numa_paired_threads(numa, extra_specs)
+        self.assertDictEqual(extra_specs, expected_extra_spec)
+        self.assertEqual(result, 6)
+
+    def test_process_numa_paired_threads_empty_numa(self):
+        numa = {}
+        extra_specs = {}
+        result = self.vimconn.process_numa_paired_threads(numa, extra_specs)
+        self.assertDictEqual(extra_specs, {})
+        self.assertEqual(result, None)
+
+    def test_process_numa_paired_threads_not_exist(self):
+        numa = {"vcpu": [2]}
+        extra_specs = {}
+        result = self.vimconn.process_numa_paired_threads(numa, extra_specs)
+        self.assertDictEqual(extra_specs, {})
+        self.assertEqual(result, None)
+
+    def test_process_numa_paired_threads_str_thread_num(self):
+        numa = {"id": 0, "paired-threads": "3"}
+        extra_specs = {}
+        expected_extra_spec = {
+            "hw:cpu_thread_policy": "require",
+            "hw:cpu_policy": "dedicated",
+        }
+        result = self.vimconn.process_numa_paired_threads(numa, extra_specs)
+        self.assertDictEqual(extra_specs, expected_extra_spec)
+        self.assertEqual(result, "33")
+
+    def test_process_numa_paired_threads_none_thread_num(self):
+        numa = {"id": 0, "paired-threads": None}
+        extra_specs = {}
+        result = self.vimconn.process_numa_paired_threads(numa, extra_specs)
+        self.assertDictEqual(extra_specs, {})
+        self.assertEqual(result, None)
+
+    def test_process_numa_cores_empty_extra_spec(self):
+        numa = {"id": 0, "cores": 1}
+        extra_specs = {}
+        expected_extra_spec = {
+            "hw:cpu_policy": "dedicated",
+            "hw:cpu_thread_policy": "isolate",
+        }
+        result = self.vimconn.process_numa_cores(numa, extra_specs)
+        self.assertDictEqual(extra_specs, expected_extra_spec)
+        self.assertEqual(result, 1)
+
+    def test_process_numa_cores_not_exist(self):
+        numa = {"id": 0, "paired-threads": 3}
+        extra_specs = {}
+        result = self.vimconn.process_numa_cores(numa, extra_specs)
+        self.assertDictEqual(extra_specs, {})
+        self.assertEqual(result, None)
+
+    def test_process_numa_cores_empty_numa(self):
+        numa = {}
+        extra_specs = expected_extra_spec = {"some-key": "some-val"}
+        result = self.vimconn.process_numa_cores(numa, extra_specs)
+        self.assertDictEqual(extra_specs, expected_extra_spec)
+        self.assertEqual(result, None)
+
+    def test_process_numa_cores_none_core_num(self):
+        numa = {"memory": 1, "cores": None}
+        extra_specs = {}
+        result = self.vimconn.process_numa_cores(numa, extra_specs)
+        self.assertDictEqual(extra_specs, {})
+        self.assertEqual(result, None)
+
+    def test_process_numa_cores_string_core_num(self):
+        numa = {"id": 0, "cores": "1"}
+        extra_specs = {"some-key": "some-val"}
+        expected_extra_spec = {
+            "hw:cpu_policy": "dedicated",
+            "hw:cpu_thread_policy": "isolate",
+            "some-key": "some-val",
+        }
+        result = self.vimconn.process_numa_cores(numa, extra_specs)
+        self.assertDictEqual(extra_specs, expected_extra_spec)
+        self.assertEqual(result, "1")
+
+    def test_process_numa_cores_float_core_num(self):
+        numa = {"memory": 2, "cores": 10.03}
+        extra_specs = {"some-key": "some-val"}
+        expected_extra_spec = {
+            "hw:cpu_policy": "dedicated",
+            "hw:cpu_thread_policy": "isolate",
+            "some-key": "some-val",
+        }
+        result = self.vimconn.process_numa_cores(numa, extra_specs)
+        self.assertDictEqual(extra_specs, expected_extra_spec)
+        self.assertEqual(result, 10.03)
+
+    def test_process_numa_threads_empty_extra_spec_int_thread_num(self):
+        numa = {"memory": 1, "vcpu": [1, 3], "threads": 3}
+        extra_specs = {}
+        expected_extra_spec = {
+            "hw:cpu_policy": "dedicated",
+            "hw:cpu_thread_policy": "prefer",
+        }
+        result = self.vimconn.process_numa_threads(numa, extra_specs)
+        self.assertDictEqual(extra_specs, expected_extra_spec)
+        self.assertEqual(result, 3)
+
+    def test_process_numa_threads_empty_numa(self):
+        numa = {}
+        extra_specs = {"some-key": "some-val"}
+        expected_extra_spec = {"some-key": "some-val"}
+        result = self.vimconn.process_numa_threads(numa, extra_specs)
+        self.assertDictEqual(extra_specs, expected_extra_spec)
+        self.assertEqual(result, None)
+
+    def test_process_numa_threads_not_exist(self):
+        numa = {"memory": 1}
+        extra_specs = expected_extra_spec = {"some-key": "some-val"}
+        result = self.vimconn.process_numa_threads(numa, extra_specs)
+        self.assertDictEqual(extra_specs, expected_extra_spec)
+        self.assertEqual(result, None)
+
+    def test_process_numa_threads_str_thread_num(self):
+        numa = {"vcpu": [1, 3], "threads": "3"}
+        extra_specs = {}
+        expected_extra_spec = {
+            "hw:cpu_policy": "dedicated",
+            "hw:cpu_thread_policy": "prefer",
+        }
+        result = self.vimconn.process_numa_threads(numa, extra_specs)
+        self.assertDictEqual(extra_specs, expected_extra_spec)
+        self.assertEqual(result, "3")
+
+    def test_process_numa_threads_none_thread_num(self):
+        numa = {"vcpu": [1, 3], "threads": None}
+        extra_specs = {}
+        result = self.vimconn.process_numa_threads(numa, extra_specs)
+        self.assertDictEqual(extra_specs, {})
+        self.assertEqual(result, None)
+
+    def test_process_numa_threads_float_thread_num(self):
+        numa = {"memory": 1, "vcpu": [1, 3], "threads": 3.3}
+        extra_specs = {"some-key": "some-val"}
+        expected_extra_spec = {
+            "hw:cpu_policy": "dedicated",
+            "hw:cpu_thread_policy": "prefer",
+            "some-key": "some-val",
+        }
+        result = self.vimconn.process_numa_threads(numa, extra_specs)
+        self.assertDictEqual(extra_specs, expected_extra_spec)
+        self.assertEqual(result, 3.3)
+
+    def test_change_the_flavor_name_not_existing_name(self):
+        """Flavor name does not exist in Openstack flavor list."""
+        self.flavor1.name = "sample-flavor-3"
+        self.flavor2.name = "other-flavor-4"
+        self.vimconn.nova.flavors.list.return_value = [self.flavor1, self.flavor2]
+        name = "other-flavor-3"
+        name_suffix = 3
+        flavor_data = {"name": "other-flavor"}
+        result = self.vimconn._change_flavor_name(name, name_suffix, flavor_data)
+        self.assertEqual(result, name)
+        self.vimconn.nova.flavors.list.assert_called_once()
+        # Checking whether name_suffix changed or not.
+        self.assertEqual(name_suffix, 3)
+
+    def test_change_the_flavor_name_existing_name(self):
+        """Flavor name exists in Openstack flavor list."""
+        self.flavor1.name = "other-flavor-6"
+        self.flavor2.name = "other-flavor-3"
+        self.vimconn.nova.flavors.list.return_value = [self.flavor1, self.flavor2]
+        name = "other-flavor-3"
+        name_suffix = 5
+        flavor_data = {"name": "other-flavor"}
+        expected_result = "other-flavor-7"
+        result = self.vimconn._change_flavor_name(name, name_suffix, flavor_data)
+        self.assertEqual(result, expected_result)
+        # Checking whether name_suffix changed or not.
+        self.assertEqual(name_suffix, 5)
+        self.vimconn.nova.flavors.list.assert_called_once()
+
+    def test_change_the_flavor_name_flavor_data_does_not_have_name(self):
+        """Flavor data does not have name."""
+        self.flavor1.name = "other-flavor-6"
+        self.flavor2.name = "other-flavor-3"
+        self.vimconn.nova.flavors.list.return_value = [self.flavor1, self.flavor2]
+        name = "other-flavor-3"
+        name_suffix = 5
+        flavor_data = {}
+        with self.assertRaises(KeyError):
+            self.vimconn._change_flavor_name(name, name_suffix, flavor_data)
+        self.vimconn.nova.flavors.list.assert_called_once()
+        # Checking whether name_suffix changed or not.
+        self.assertEqual(name_suffix, 5)
+
+    def test_change_the_flavor_name_invalid_name_suffix(self):
+        """Name suffix is invalid."""
+        self.flavor1.name = "other-flavor-6"
+        self.flavor2.name = "other-flavor-3"
+        self.vimconn.nova.flavors.list.return_value = [self.flavor1, self.flavor2]
+        name = "other-flavor-3"
+        name_suffix = "a"
+        flavor_data = {"name": "other-flavor"}
+        with self.assertRaises(TypeError):
+            self.vimconn._change_flavor_name(name, name_suffix, flavor_data)
+        self.vimconn.nova.flavors.list.assert_called_once()
+        # Checking whether name_suffix changed or not.
+        self.assertEqual(name_suffix, "a")
+
+    def test_change_the_flavor_name_given_name_is_empty(self):
+        """Given name is empty string."""
+        self.flavor1.name = "other-flavor-6"
+        self.flavor2.name = "other-flavor-3"
+        self.vimconn.nova.flavors.list.return_value = [self.flavor1, self.flavor2]
+        name = ""
+        name_suffix = 3
+        flavor_data = {"name": "other-flavor"}
+        result = self.vimconn._change_flavor_name(name, name_suffix, flavor_data)
+        self.assertEqual(result, "")
+        self.vimconn.nova.flavors.list.assert_called_once()
+        # Checking whether name_suffix increased or not.
+        self.assertEqual(name_suffix, 3)
+
+    def test_change_the_flavor_name_given_name_is_none(self):
+        """Given name is None."""
+        self.flavor1.name = "other-flavor-6"
+        self.flavor2.name = "other-flavor-3"
+        self.vimconn.nova.flavors.list.return_value = [self.flavor1, self.flavor2]
+        name = None
+        name_suffix = 6
+        flavor_data = {"name": "other-flavor"}
+        result = self.vimconn._change_flavor_name(name, name_suffix, flavor_data)
+        self.assertEqual(result, None)
+        self.vimconn.nova.flavors.list.assert_called_once()
+        # Checking whether name_suffix increased or not.
+        self.assertEqual(name_suffix, 6)
+
+    def test_change_the_flavor_name_empty_nova_flavor_list(self):
+        """Nova flavor list is empty."""
+        self.vimconn.nova.flavors.list.return_value = []
+        name = "other-flavor-3"
+        name_suffix = 5
+        flavor_data = {"name": "other-flavor"}
+        result = self.vimconn._change_flavor_name(name, name_suffix, flavor_data)
+        self.vimconn.nova.flavors.list.assert_called_once()
+        self.assertEqual(result, name)
+        # Checking whether name_suffix increased or not.
+        self.assertEqual(name_suffix, 5)
+
+    @patch.object(
+        vimconnector,
+        "_process_numa_parameters_of_flavor",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "process_resource_quota", new_callable=CopyingMock())
+    def test_process_extended_config_of_flavor_with_numa_cpu_mem_vif_disk_quota(
+        self, mock_process_resource_quota, mock_process_numa_parameters_of_flavor
+    ):
+        """Process extended config, extended has numas, cpu, mem, vif and disk-io quota."""
+        numas = [
+            {"memory": 1, "vcpu": [1, 3], "threads": 3},
+            {"memory": 2, "vcpu": [2]},
+        ]
+        extended = {
+            "numas": numas,
+            "cpu-quota": {"limit": 3},
+            "mem-quota": {"limit": 1},
+            "vif-quota": {"limit": 10},
+            "disk-io-quota": {"limit": 50},
+            "mempage-size": "LARGE",
+        }
+        extra_specs = {}
+        expected_extra_specs = {
+            "hw:mem_page_size": "large",
+        }
+        self.vimconn._process_extended_config_of_flavor(extended, extra_specs)
+
+        self.assertEqual(mock_process_resource_quota.call_count, 4)
+        mock_process_numa_parameters_of_flavor.assert_called_once_with(numas, {})
+        self.assertEqual(extra_specs, expected_extra_specs)
+
+    @patch.object(
+        vimconnector,
+        "_process_numa_parameters_of_flavor",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "process_resource_quota", new_callable=CopyingMock())
+    def test_process_extended_config_of_flavor_with_numa_wrong_disk_quota(
+        self, mock_process_resource_quota, mock_process_numa_parameters_of_flavor
+    ):
+        """Process extended config, extended has wrong disk quota key."""
+        numas = [
+            {"memory": 1, "threads": 3},
+            {"memory": 2, "vcpu": [2]},
+        ]
+        extended = {
+            "numas": numas,
+            "disk-quota": {"limit": 50},
+            "mempage-size": "PREFER_LARGE",
+        }
+        extra_specs = {}
+        expected_extra_specs = {
+            "hw:mem_page_size": "any",
+        }
+        self.vimconn._process_extended_config_of_flavor(extended, extra_specs)
+        mock_process_resource_quota.assert_not_called()
+        mock_process_numa_parameters_of_flavor.assert_called_once_with(numas, {})
+        self.assertEqual(extra_specs, expected_extra_specs)
+
+    @patch.object(
+        vimconnector,
+        "_process_numa_parameters_of_flavor",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "process_resource_quota", new_callable=CopyingMock())
+    def test_process_extended_config_of_flavor_without_numa_cpu_mem_vif_disk_quota(
+        self, mock_process_resource_quota, mock_process_numa_parameters_of_flavor
+    ):
+        """Process extended config, extended has cpu, mem, vif and disk-io quota but not numas."""
+        extended = {
+            "cpu-quota": {"limit": 3},
+            "mem-quota": {"limit": 1},
+            "vif-quota": {"limit": 10},
+            "disk-io-quota": {"limit": 50},
+            "mempage-size": "SMALL",
+        }
+        extra_specs = {}
+        expected_extra_specs = {
+            "hw:mem_page_size": "small",
+        }
+        self.vimconn._process_extended_config_of_flavor(extended, extra_specs)
+        self.assertEqual(mock_process_resource_quota.call_count, 4)
+        mock_process_numa_parameters_of_flavor.assert_not_called()
+        self.assertEqual(extra_specs, expected_extra_specs)
+
+    @patch.object(
+        vimconnector,
+        "_process_numa_parameters_of_flavor",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "process_resource_quota", new_callable=CopyingMock())
+    def test_process_extended_config_of_flavor_with_numa_with_cpu_pinning_mem_policy(
+        self, mock_process_resource_quota, mock_process_numa_parameters_of_flavor
+    ):
+        """Process extended config, extended has cpu, mem quota, cpu-pinning and mem-policy."""
+        numas = [
+            {"memory": 1},
+            {"memory": 2, "vcpu": [2]},
+        ]
+        extended = {
+            "numas": numas,
+            "cpu-quota": {"limit": 3},
+            "mem-quota": {"limit": 1},
+            "mempage-size": "LARGE",
+            "cpu-pinning-policy": "DEDICATED",
+            "mem-policy": "STRICT",
+        }
+        extra_specs = {}
+        expected_extra_specs = {
+            "hw:mem_page_size": "large",
+            "hw:cpu_policy": "dedicated",
+            "hw:numa_mempolicy": "strict",
+        }
+        self.vimconn._process_extended_config_of_flavor(extended, extra_specs)
+        self.assertEqual(mock_process_resource_quota.call_count, 2)
+        mock_process_numa_parameters_of_flavor.assert_called_once_with(numas, {})
+        self.assertEqual(extra_specs, expected_extra_specs)
+
+    @patch.object(
+        vimconnector,
+        "_process_numa_parameters_of_flavor",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "process_resource_quota", new_callable=CopyingMock())
+    def test_process_extended_config_of_flavor_without_numa_with_cpu_pinning_mem_policy(
+        self, mock_process_resource_quota, mock_process_numa_parameters_of_flavor
+    ):
+        """Process extended config, extended has cpu, mem quota, cpu-pinning and mem-policy but not numas."""
+        extended = {
+            "cpu-quota": {"limit": 3},
+            "mem-quota": {"limit": 1},
+            "mempage-size": "LARGE",
+            "cpu-pinning-policy": "DEDICATED",
+            "mem-policy": "STRICT",
+        }
+        extra_specs = {}
+        expected_extra_specs = {
+            "hw:mem_page_size": "large",
+            "hw:cpu_policy": "dedicated",
+            "hw:numa_mempolicy": "strict",
+        }
+        self.vimconn._process_extended_config_of_flavor(extended, extra_specs)
+        self.assertEqual(mock_process_resource_quota.call_count, 2)
+        mock_process_numa_parameters_of_flavor.assert_not_called()
+        self.assertEqual(extra_specs, expected_extra_specs)
+
+    @patch.object(
+        vimconnector,
+        "_process_numa_parameters_of_flavor",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "process_resource_quota", new_callable=CopyingMock())
+    def test_process_extended_config_of_flavor_without_numa_with_wrong_mempage_size(
+        self, mock_process_resource_quota, mock_process_numa_parameters_of_flavor
+    ):
+        """Process extended config, extended has wrong mempage-size without numas."""
+        extended = {
+            "cpu-quota": {"limit": 3},
+            "mem-quota": {"limit": 1},
+            "mempage-size": "SIZE_2GB",
+            "cpu-pinning-policy": "DEDICATED",
+            "mem-policy": "STRICT",
+        }
+        extra_specs = {}
+
+        expected_extra_specs = {
+            "hw:cpu_policy": "dedicated",
+            "hw:numa_mempolicy": "strict",
+        }
+        self.vimconn._process_extended_config_of_flavor(extended, extra_specs)
+        self.assertEqual(mock_process_resource_quota.call_count, 2)
+        mock_process_numa_parameters_of_flavor.assert_not_called()
+        self.assertEqual(extra_specs, expected_extra_specs)
+
+    @patch.object(
+        vimconnector,
+        "_process_numa_parameters_of_flavor",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "process_resource_quota", new_callable=CopyingMock())
+    def test_process_extended_config_of_flavor_with_numa_with_wrong_mempage_size(
+        self, mock_process_resource_quota, mock_process_numa_parameters_of_flavor
+    ):
+        """Process extended config, extended has wrong mempage-size with numas."""
+        numas = [
+            {"memory": 1},
+            {"memory": 2, "vcpu": [2]},
+        ]
+        extended = {
+            "numas": numas,
+            "cpu-quota": {"limit": 3},
+            "mem-quota": {"limit": 1},
+            "mempage-size": "SIZE_2GB",
+            "cpu-pinning-policy": "DEDICATED",
+            "mem-policy": "STRICT",
+        }
+        extra_specs = {}
+        expected_extra_specs = {
+            "hw:cpu_policy": "dedicated",
+            "hw:numa_mempolicy": "strict",
+        }
+        self.vimconn._process_extended_config_of_flavor(extended, extra_specs)
+        self.assertEqual(mock_process_resource_quota.call_count, 2)
+        mock_process_numa_parameters_of_flavor.assert_called_once_with(numas, {})
+        self.assertEqual(extra_specs, expected_extra_specs)
+
+    @patch.object(
+        vimconnector,
+        "_process_numa_parameters_of_flavor",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "process_resource_quota", new_callable=CopyingMock())
+    def test_process_extended_config_of_flavor_none_vcpus(
+        self, mock_process_resource_quota, mock_process_numa_parameters_of_flavor
+    ):
+        """Process extended config, extended has cpu, mem quota, cpu-pinning and mem-policy, vcpus is None."""
+        numas = [
+            {"memory": 1},
+            {"memory": 2, "vcpu": [2]},
+        ]
+        extended = {
+            "numas": numas,
+            "cpu-quota": {"limit": 3},
+            "mem-quota": {"limit": 1},
+            "mempage-size": "SIZE_2GB",
+            "cpu-pinning-policy": "DEDICATED",
+            "mem-policy": "STRICT",
+        }
+        extra_specs = {}
+        expected_extra_specs = {
+            "hw:cpu_policy": "dedicated",
+            "hw:numa_mempolicy": "strict",
+        }
+        self.vimconn._process_extended_config_of_flavor(extended, extra_specs)
+        self.assertEqual(mock_process_resource_quota.call_count, 2)
+        mock_process_numa_parameters_of_flavor.assert_called_once_with(numas, {})
+        self.assertEqual(extra_specs, expected_extra_specs)
+
+    @patch.object(
+        vimconnector,
+        "_process_numa_parameters_of_flavor",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "process_resource_quota", new_callable=CopyingMock())
+    def test_process_extended_config_of_flavor_none_vcpus_without_numas(
+        self, mock_process_resource_quota, mock_process_numa_parameters_of_flavor
+    ):
+        """Process extended config, extended has cpu, mem quota, cpu-pinning and mem-policy, vcpus is None."""
+        extended = {
+            "cpu-quota": {"limit": 3},
+            "mem-quota": {"limit": 1},
+            "mempage-size": "SIZE_2GB",
+            "cpu-pinning-policy": "DEDICATED",
+            "mem-policy": "STRICT",
+        }
+        extra_specs = {"some-key": "some-val"}
+        expected_extra_specs = {
+            "hw:cpu_policy": "dedicated",
+            "hw:numa_mempolicy": "strict",
+            "some-key": "some-val",
+        }
+        self.vimconn._process_extended_config_of_flavor(extended, extra_specs)
+        self.assertEqual(mock_process_resource_quota.call_count, 2)
+        mock_process_numa_parameters_of_flavor.assert_not_called()
+        self.assertEqual(extra_specs, expected_extra_specs)
+
+    @patch.object(
+        vimconnector,
+        "_process_numa_parameters_of_flavor",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "process_resource_quota", new_callable=CopyingMock())
+    def test_process_extended_config_of_flavor_wrong_cpu_pinning_mem_policy_empty_vcpus(
+        self, mock_process_resource_quota, mock_process_numa_parameters_of_flavor
+    ):
+        """Process extended config, extended has wrong cpu-pinning and mem-policy keys."""
+        numas = [
+            {"memory": 1},
+            {"memory": 2, "vcpu": [2]},
+        ]
+        extended = {
+            "numas": numas,
+            "cpu-quota": {"limit": 3},
+            "mem-quota": {"limit": 1},
+            "mempage-size": "SIZE_2GB",
+            "cpu-pinning-pol": "DEDICATED",
+            "mem-pol": "STRICT",
+        }
+        extra_specs = {}
+        expected_extra_specs = {}
+        self.vimconn._process_extended_config_of_flavor(extended, extra_specs)
+        self.assertEqual(mock_process_resource_quota.call_count, 2)
+        mock_process_numa_parameters_of_flavor.assert_called_once_with(
+            numas, extra_specs
+        )
+        self.assertEqual(extra_specs, expected_extra_specs)
+
+    @patch.object(
+        vimconnector,
+        "_process_numa_parameters_of_flavor",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "process_resource_quota", new_callable=CopyingMock())
+    def test_process_extended_config_of_flavor_empty_extended(
+        self, mock_process_resource_quota, mock_process_numa_parameters_of_flavor
+    ):
+        """Process extended config, extended is empty."""
+        extended = {}
+        extra_specs = {}
+        self.vimconn._process_extended_config_of_flavor(extended, extra_specs)
+        self.check_if_assert_not_called(
+            [mock_process_resource_quota, mock_process_numa_parameters_of_flavor]
+        )
+        self.assertEqual(extra_specs, {})
+
+    def test_get_flavor_details_empty_flavor_data(self):
+        flavor_data = {}
+        expected_result = (64, 1, {}, None)
+        result = self.vimconn._get_flavor_details(flavor_data)
+        self.assertEqual(result, expected_result)
+
+    def test_get_flavor_details_flavor_data_has_ram_vcpus_extended(self):
+        flavor_data = {
+            "ram": 32,
+            "vcpus": 3,
+            "extended": {
+                "some-key": "some-val",
+            },
+        }
+        expected_result = (32, 3, {}, {"some-key": "some-val"})
+        result = self.vimconn._get_flavor_details(flavor_data)
+        self.assertEqual(result, expected_result)
+
+    def test_get_flavor_details_flavor_data_is_none(self):
+        flavor_data = None
+        with self.assertRaises(AttributeError):
+            self.vimconn._get_flavor_details(flavor_data)
+
+    def test_get_flavor_details_flavor_data_has_only_extended(self):
+        flavor_data = {
+            "extended": {
+                "some-key": "some-val",
+            }
+        }
+        expected_result = (64, 1, {}, {"some-key": "some-val"})
+        result = self.vimconn._get_flavor_details(flavor_data)
+        self.assertEqual(result, expected_result)
+
+    @patch.object(vimconnector, "_get_flavor_details", new_callable=CopyingMock())
+    @patch.object(
+        vimconnector,
+        "_process_extended_config_of_flavor",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "_change_flavor_name", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_reload_connection", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_format_exception", new_callable=CopyingMock())
+    def test_new_flavor_with_extended_with_extra_specs(
+        self,
+        mock_format_exception,
+        mock_reload_connection,
+        mock_change_flavor_name,
+        mock_extended_config_of_flavor,
+        mock_get_flavor_details,
+    ):
+        """Create new flavor with using extended parameters and extra specs."""
+        name_suffix = 0
+        vcpus = 8
+        mock_change_flavor_name.return_value = name1
+        mock_get_flavor_details.return_value = (
+            3,
+            vcpus,
+            {"some-key": "some-value"},
+            extended,
+        )
+        expected_result = self.new_flavor.id
+        result = self.vimconn.new_flavor(flavor_data)
+        self.assertEqual(result, expected_result)
+        mock_reload_connection.assert_called_once()
+        self.new_flavor.set_keys.assert_called_once()
+        mock_get_flavor_details.assert_called_once_with(flavor_data)
+        mock_change_flavor_name.assert_called_once_with(name1, name_suffix, flavor_data)
+        mock_extended_config_of_flavor.assert_called_once_with(
+            extended, {"some-key": "some-value"}
+        )
+        self.vimconn.nova.flavors.create.assert_called_once_with(
+            name=name1, ram=3, vcpus=8, disk=50, ephemeral=0, swap=0, is_public=True
+        )
+        mock_format_exception.assert_not_called()
+
+    @patch.object(vimconnector, "_get_flavor_details", new_callable=CopyingMock())
+    @patch.object(
+        vimconnector,
+        "_process_extended_config_of_flavor",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "_change_flavor_name", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_reload_connection", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_format_exception", new_callable=CopyingMock())
+    def test_new_flavor_with_extended_without_extra_specs(
+        self,
+        mock_format_exception,
+        mock_reload_connection,
+        mock_change_flavor_name,
+        mock_extended_config_of_flavor,
+        mock_get_flavor_details,
+    ):
+        """Create new flavor with using extended parameters without extra specs."""
+        name_suffix = 0
+        vcpus = 8
+        mock_change_flavor_name.return_value = name1
+        mock_get_flavor_details.return_value = (3, vcpus, {}, extended)
+        expected_result = self.new_flavor.id
+        result = self.vimconn.new_flavor(flavor_data)
+        self.assertEqual(result, expected_result)
+        mock_reload_connection.assert_called_once()
+        mock_get_flavor_details.assert_called_once_with(flavor_data)
+        mock_change_flavor_name.assert_called_once_with(name1, name_suffix, flavor_data)
+        mock_extended_config_of_flavor.assert_called_once_with(extended, {})
+        self.vimconn.nova.flavors.create.assert_called_once_with(
+            name=name1, ram=3, vcpus=vcpus, disk=50, ephemeral=0, swap=0, is_public=True
+        )
+        self.check_if_assert_not_called(
+            [self.new_flavor.set_keys, mock_format_exception]
+        )
+
+    @patch.object(vimconnector, "_get_flavor_details", new_callable=CopyingMock())
+    @patch.object(
+        vimconnector,
+        "_process_extended_config_of_flavor",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "_change_flavor_name", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_reload_connection", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_format_exception", new_callable=CopyingMock())
+    def test_new_flavor_change_name_if_used_false_with_extended(
+        self,
+        mock_format_exception,
+        mock_reload_connection,
+        mock_change_flavor_name,
+        mock_extended_config_of_flavor,
+        mock_get_flavor_details,
+    ):
+        """Create new flavor, change_name_if_used_false, there is extended."""
+        vcpus = 8
+        mock_get_flavor_details.return_value = (3, vcpus, {}, extended)
+        expected_result = self.new_flavor.id
+        result = self.vimconn.new_flavor(flavor_data, False)
+        self.assertEqual(result, expected_result)
+        mock_reload_connection.assert_called_once()
+        self.assertEqual(mock_get_flavor_details.call_count, 1)
+        mock_extended_config_of_flavor.assert_called_once_with(extended, {})
+        self.vimconn.nova.flavors.create.assert_called_once_with(
+            name=name1, ram=3, vcpus=8, disk=50, ephemeral=0, swap=0, is_public=True
+        )
+        self.check_if_assert_not_called(
+            [mock_change_flavor_name, mock_format_exception, self.new_flavor.set_keys]
+        )
+
+    @patch.object(vimconnector, "_get_flavor_details", new_callable=CopyingMock())
+    @patch.object(
+        vimconnector,
+        "_process_extended_config_of_flavor",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "_change_flavor_name", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_reload_connection", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_format_exception", new_callable=CopyingMock())
+    def test_new_flavor_change_name_if_used_true_without_extended(
+        self,
+        mock_format_exception,
+        mock_reload_connection,
+        mock_change_flavor_name,
+        mock_extended_config_of_flavor,
+        mock_get_flavor_details,
+    ):
+        """Create new flavor without extended parameters."""
+        name_suffix = 0
+        mock_change_flavor_name.return_value = name1
+        expected_result = self.new_flavor.id
+        mock_get_flavor_details.return_value = (3, 8, {}, None)
+        result = self.vimconn.new_flavor(flavor_data2)
+        self.assertEqual(result, expected_result)
+        mock_reload_connection.assert_called_once()
+        mock_change_flavor_name.assert_called_once_with(
+            name1, name_suffix, flavor_data2
+        )
+        self.assertEqual(mock_get_flavor_details.call_count, 1)
+        self.vimconn.nova.flavors.create.assert_called_once_with(
+            name=name1, ram=3, vcpus=8, disk=50, ephemeral=0, swap=0, is_public=True
+        )
+        self.check_if_assert_not_called(
+            [
+                self.new_flavor.set_keys,
+                mock_extended_config_of_flavor,
+                mock_format_exception,
+            ]
+        )
+
+    @patch.object(vimconnector, "_get_flavor_details", new_callable=CopyingMock())
+    @patch.object(
+        vimconnector,
+        "_process_extended_config_of_flavor",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "_change_flavor_name", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_reload_connection", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_format_exception", new_callable=CopyingMock())
+    def test_new_flavor_reload_connection_exception(
+        self,
+        mock_format_exception,
+        mock_reload_connection,
+        mock_change_flavor_name,
+        mock_extended_config_of_flavor,
+        mock_get_flavor_details,
+    ):
+        """Create new flavor, reload connection exception occurred."""
+        error_msg = "Can not connect to client APIs."
+        error = nvExceptions.ClientException(error_msg)
+        mock_change_flavor_name.return_value = name1
+        mock_reload_connection.side_effect = error
+        with self.assertRaises(Exception) as err:
+            self.vimconn.new_flavor(flavor_data2)
+            self.assertEqual(str(err.exception), "Can not connect to client APIs.")
+        self.assertEqual(mock_reload_connection.call_count, 1)
+        call_mock_format_exception = mock_format_exception.call_args
+        self.assertEqual(
+            str(call_mock_format_exception[0][0]), str(ClientException(error_msg))
+        )
+        self.check_if_assert_not_called(
+            [
+                mock_change_flavor_name,
+                mock_get_flavor_details,
+                mock_extended_config_of_flavor,
+                self.vimconn.nova.flavors.create,
+            ]
+        )
+
+    @patch.object(vimconnector, "_get_flavor_details", new_callable=CopyingMock())
+    @patch.object(
+        vimconnector,
+        "_process_extended_config_of_flavor",
+        new_callable=CopyingMock(autospec=True),
+    )
+    @patch.object(vimconnector, "_change_flavor_name", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_reload_connection", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_format_exception", new_callable=CopyingMock())
+    def test_new_flavor_flavor_data_without_name(
+        self,
+        mock_format_exception,
+        mock_reload_connection,
+        mock_change_flavor_name,
+        mock_extended_config_of_flavor,
+        mock_get_flavor_details,
+    ):
+        """Create new flavor, flavor data does not have name."""
+        flavor_data3 = {
+            "ram": 3,
+            "vcpus": 8,
+            "disk": 50,
+        }
+        error_msg = "name"
+        self.vimconn.new_flavor(flavor_data3)
+        mock_format_exception.assert_called_once()
+        call_mock_format_exception = mock_format_exception.call_args
+        self.assertEqual(
+            str(call_mock_format_exception[0][0]), str(KeyError(error_msg))
+        )
+        self.check_if_assert_not_called(
+            [
+                mock_reload_connection,
+                mock_change_flavor_name,
+                mock_get_flavor_details,
+                mock_extended_config_of_flavor,
+                self.vimconn.nova.flavors.create,
+            ]
+        )
+
+    @patch.object(vimconnector, "_get_flavor_details", new_callable=CopyingMock())
+    @patch.object(
+        vimconnector,
+        "_process_extended_config_of_flavor",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "_change_flavor_name", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_reload_connection", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_format_exception", new_callable=CopyingMock())
+    def test_new_flavor_change_flavor_name_has_extended_conflict_exception_recovered_in_retry(
+        self,
+        mock_format_exception,
+        mock_reload_connection,
+        mock_change_flavor_name,
+        mock_extended_config_of_flavor,
+        mock_get_flavor_details,
+    ):
+        """Create new flavor, nvExceptions.Conflict occurred and recovered, there is extended config."""
+        name_suffix = 0
+        error_msg = "Conflict has occurred while creating flavor name."
+        error2 = nvExceptions.Conflict(error_msg)
+        mock_change_flavor_name.side_effect = [error2, "sample-flavor-3"]
+        expected_result = self.new_flavor.id
+        mock_get_flavor_details.return_value = (3, 8, {}, extended)
+        result = self.vimconn.new_flavor(flavor_data2)
+        self.assertEqual(result, expected_result)
+        self.assertEqual(mock_reload_connection.call_count, 2)
+        mock_change_flavor_name.assert_called_with(name1, name_suffix, flavor_data2)
+        self.assertEqual(mock_change_flavor_name.call_count, 2)
+        self.assertEqual(mock_get_flavor_details.call_count, 1)
+        self.assertEqual(mock_extended_config_of_flavor.call_count, 1)
+        self.vimconn.nova.flavors.create.assert_called_once_with(
+            name="sample-flavor-3",
+            ram=3,
+            vcpus=8,
+            disk=50,
+            ephemeral=0,
+            swap=0,
+            is_public=True,
+        )
+        self.check_if_assert_not_called(
+            [self.new_flavor.set_keys, mock_format_exception]
+        )
+
+    @patch.object(vimconnector, "_get_flavor_details", new_callable=CopyingMock())
+    @patch.object(
+        vimconnector,
+        "_process_extended_config_of_flavor",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "_change_flavor_name", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_reload_connection", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_format_exception", new_callable=CopyingMock())
+    def test_new_flavor_change_flavor_name_without_extended_conflict_exception_recovered_in_retry(
+        self,
+        mock_format_exception,
+        mock_reload_connection,
+        mock_change_flavor_name,
+        mock_extended_config_of_flavor,
+        mock_get_flavor_details,
+    ):
+        """Create new flavor, nvExceptions.Conflict occurred and recovered, there is not extended config."""
+        name_suffix = 0
+        error2 = nvExceptions.Conflict(
+            "Conflict has occurred while creating flavor name."
+        )
+        mock_change_flavor_name.side_effect = [error2, "sample-flavor-3"]
+        expected_result = self.new_flavor.id
+        mock_get_flavor_details.return_value = (3, 8, {}, None)
+        result = self.vimconn.new_flavor(flavor_data2)
+        self.assertEqual(result, expected_result)
+        self.assertEqual(mock_reload_connection.call_count, 2)
+        mock_change_flavor_name.assert_called_with(name1, name_suffix, flavor_data2)
+        self.assertEqual(mock_change_flavor_name.call_count, 2)
+        self.assertEqual(mock_get_flavor_details.call_count, 1)
+        self.vimconn.nova.flavors.create.assert_called_once_with(
+            name="sample-flavor-3",
+            ram=3,
+            vcpus=8,
+            disk=50,
+            ephemeral=0,
+            swap=0,
+            is_public=True,
+        )
+        self.check_if_assert_not_called(
+            [
+                self.new_flavor.set_keys,
+                mock_extended_config_of_flavor,
+                mock_format_exception,
+            ]
+        )
+
+    @patch.object(vimconnector, "_get_flavor_details", new_callable=CopyingMock())
+    @patch.object(
+        vimconnector,
+        "_process_extended_config_of_flavor",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "_change_flavor_name", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_reload_connection", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_format_exception", new_callable=CopyingMock())
+    def test_new_flavor_change_flavor_name_conflict_exception_change_name_if_used_false(
+        self,
+        mock_format_exception,
+        mock_reload_connection,
+        mock_change_flavor_name,
+        mock_extended_config_of_flavor,
+        mock_get_flavor_details,
+    ):
+        """Create new flavor, nvExceptions.Conflict occurred,
+        change_name_if_used is false."""
+        change_name_if_used = False
+        error_msg = "Conflict has occurred while creating flavor name."
+        error2 = nvExceptions.Conflict(error_msg)
+        mock_get_flavor_details.return_value = (4, 8, {}, None)
+        self.vimconn.nova.flavors.create.side_effect = error2
+        with self.assertRaises(Exception) as err:
+            self.vimconn.new_flavor(flavor_data2, change_name_if_used)
+            self.assertEqual(str(err.exception), error_msg)
+            self.assertEqual(type(err.exception), nvExceptions.Conflict)
+        self.vimconn.nova.flavors.create.assert_called_with(
+            name="sample-flavor",
+            ram=4,
+            vcpus=8,
+            disk=50,
+            ephemeral=0,
+            swap=0,
+            is_public=True,
+        )
+        self.assertEqual(mock_get_flavor_details.call_count, 3)
+        self.assertEqual(self.vimconn.nova.flavors.create.call_count, 3)
+        self.assertEqual(mock_reload_connection.call_count, 3)
+        self.check_if_assert_not_called(
+            [mock_change_flavor_name, mock_extended_config_of_flavor]
+        )
+        _call_mock_format_exception = mock_format_exception.call_args
+        self.assertEqual(
+            str(_call_mock_format_exception[0][0]), str(Conflict(error_msg))
+        )
+        self.assertEqual(mock_format_exception.call_count, 3)
+
+    @patch.object(vimconnector, "_get_flavor_details", new_callable=CopyingMock())
+    @patch.object(
+        vimconnector,
+        "_process_extended_config_of_flavor",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "_change_flavor_name", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_reload_connection", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_format_exception", new_callable=CopyingMock())
+    def test_new_flavor_client_exception_occurred_change_name_if_used_true(
+        self,
+        mock_format_exception,
+        mock_reload_connection,
+        mock_change_flavor_name,
+        mock_extended_config_of_flavor,
+        mock_get_flavor_details,
+    ):
+        """Create new flavor, nvExceptions.ClientException occurred,
+        change_name_if_used is true."""
+        error_msg = "Connection failed."
+        error2 = nvExceptions.ClientException(error_msg)
+        mock_change_flavor_name.side_effect = [
+            "sample-flavor-3",
+            "sample-flavor-4",
+            "sample-flavor-5",
+        ]
+        mock_get_flavor_details.return_value = (3, 8, {}, None)
+        self.vimconn.nova.flavors.create.side_effect = error2
+        with self.assertRaises(Exception) as err:
+            self.vimconn.new_flavor(flavor_data2)
+            self.assertEqual(
+                str(err.exception), "Conflict has occurred while creating flavor name."
+            )
+            self.assertEqual(type(err.exception), nvExceptions.Conflict)
+        self.assertEqual(self.vimconn.nova.flavors.create.call_count, 1)
+        _call_mock_nova_create_flavor = self.vimconn.nova.flavors.create.call_args_list
+        self.assertEqual(
+            _call_mock_nova_create_flavor[0][1],
+            (
+                {
+                    "name": "sample-flavor-3",
+                    "ram": 3,
+                    "vcpus": 8,
+                    "disk": 50,
+                    "ephemeral": 0,
+                    "swap": 0,
+                    "is_public": True,
+                }
+            ),
+        )
+
+        self.assertEqual(mock_reload_connection.call_count, 1)
+        self.assertEqual(mock_get_flavor_details.call_count, 1)
+        _call_mock_change_flavor = mock_change_flavor_name.call_args_list
+        self.assertEqual(
+            _call_mock_change_flavor[0][0],
+            (
+                "sample-flavor",
+                0,
+                {"name": "sample-flavor", "ram": 3, "vcpus": 8, "disk": 50},
+            ),
+        )
+        self.assertEqual(mock_change_flavor_name.call_count, 1)
+        mock_extended_config_of_flavor.assert_not_called()
+        call_mock_format_exception = mock_format_exception.call_args
+        self.assertEqual(
+            str(call_mock_format_exception[0][0]), str(ClientException(error_msg))
+        )
+        self.assertEqual(mock_format_exception.call_count, 1)
+
+    @patch.object(vimconnector, "_get_flavor_details", new_callable=CopyingMock())
+    @patch.object(
+        vimconnector,
+        "_process_extended_config_of_flavor",
+        new_callable=CopyingMock(),
+    )
+    @patch.object(vimconnector, "_change_flavor_name", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_reload_connection", new_callable=CopyingMock())
+    @patch.object(vimconnector, "_format_exception", new_callable=CopyingMock())
+    def test_new_flavor_change_flavor_name_conflict_exception_occurred_change_name_if_used_true(
+        self,
+        mock_format_exception,
+        mock_reload_connection,
+        mock_change_flavor_name,
+        mock_extended_config_of_flavor,
+        mock_get_flavor_details,
+    ):
+        """Create new flavor, nvExceptions.Conflict occurred,
+        change_name_if_used is true."""
+        error_msg = "Conflict has occurred while creating flavor name."
+        error2 = nvExceptions.Conflict(error_msg)
+        mock_change_flavor_name.side_effect = [
+            "sample-flavor-3",
+            "sample-flavor-4",
+            "sample-flavor-5",
+        ]
+        mock_get_flavor_details.return_value = (3, 8, {}, None)
+        self.vimconn.nova.flavors.create.side_effect = error2
+        with self.assertRaises(Exception) as err:
+            self.vimconn.new_flavor(flavor_data2)
+            self.assertEqual(str(err.exception), error_msg)
+            self.assertEqual(type(err.exception), nvExceptions.Conflict)
+        self.assertEqual(self.vimconn.nova.flavors.create.call_count, 3)
+        _call_mock_nova_create_flavor = self.vimconn.nova.flavors.create.call_args_list
+        self.assertEqual(
+            _call_mock_nova_create_flavor[0][1],
+            (
+                {
+                    "name": "sample-flavor-3",
+                    "ram": 3,
+                    "vcpus": 8,
+                    "disk": 50,
+                    "ephemeral": 0,
+                    "swap": 0,
+                    "is_public": True,
+                }
+            ),
+        )
+        self.assertEqual(
+            _call_mock_nova_create_flavor[1][1],
+            (
+                {
+                    "name": "sample-flavor-4",
+                    "ram": 3,
+                    "vcpus": 8,
+                    "disk": 50,
+                    "ephemeral": 0,
+                    "swap": 0,
+                    "is_public": True,
+                }
+            ),
+        )
+        self.assertEqual(
+            _call_mock_nova_create_flavor[2][1],
+            (
+                {
+                    "name": "sample-flavor-5",
+                    "ram": 3,
+                    "vcpus": 8,
+                    "disk": 50,
+                    "ephemeral": 0,
+                    "swap": 0,
+                    "is_public": True,
+                }
+            ),
+        )
+        self.assertEqual(mock_reload_connection.call_count, 3)
+        _call_mock_change_flavor = mock_change_flavor_name.call_args_list
+        self.assertEqual(
+            _call_mock_change_flavor[0][0],
+            (
+                "sample-flavor",
+                0,
+                {"name": "sample-flavor", "ram": 3, "vcpus": 8, "disk": 50},
+            ),
+        )
+        self.assertEqual(
+            _call_mock_change_flavor[1][0],
+            (
+                "sample-flavor-3",
+                0,
+                {"name": "sample-flavor", "ram": 3, "vcpus": 8, "disk": 50},
+            ),
+        )
+        self.assertEqual(
+            _call_mock_change_flavor[2][0],
+            (
+                "sample-flavor-4",
+                0,
+                {"name": "sample-flavor", "ram": 3, "vcpus": 8, "disk": 50},
+            ),
+        )
+        self.assertEqual(mock_change_flavor_name.call_count, 3)
+        mock_extended_config_of_flavor.assert_not_called()
+        call_mock_format_exception = mock_format_exception.call_args
+        self.assertEqual(
+            str(call_mock_format_exception[0][0]), str(Conflict(error_msg))
+        )
+        self.assertEqual(mock_format_exception.call_count, 1)
+
+
 if __name__ == "__main__":
     unittest.main()