OSM-989 Fetch vnfrs and vnfds using activity

Change-Id: Iabcf10a36b8690ab5952ae46891c8dcc218a2a86
Signed-off-by: Gulsum Atici <gulsum.atici@canonical.com>
diff --git a/osm_lcm/tests/test_vnf_activities.py b/osm_lcm/tests/test_vnf_activities.py
index 989a647..12905fd 100644
--- a/osm_lcm/tests/test_vnf_activities.py
+++ b/osm_lcm/tests/test_vnf_activities.py
@@ -16,13 +16,17 @@
 
 
 import asynctest
-from osm_common.dataclasses.temporal_dataclasses import VnfInstantiateInput
+from asyncio.exceptions import CancelledError
+from copy import deepcopy
+from osm_common.dataclasses.temporal_dataclasses import (
+    GetVnfDetailsInput,
+    VnfInstantiateInput,
+)
 from osm_common.dbbase import DbException
-from osm_lcm.temporal.vnf_activities import VnfDbActivity
+from osm_lcm.temporal.vnf_activities import VnfDbActivity, VnfOperations
 from temporalio.testing import ActivityEnvironment
 from unittest.mock import Mock
 
-
 vnfr_uuid = "d08d2da5-2120-476c-8538-deaeb4e88b3e"
 model_name = "a-model-name"
 vnf_instantiate_input = VnfInstantiateInput(vnfr_uuid=vnfr_uuid, model_name=model_name)
@@ -46,3 +50,75 @@
             await self.env.run(
                 self.vnf_db_activity.set_vnf_model, vnf_instantiate_input
             )
+
+
+sample_vnfr = {
+    "_id": "9f472177-95c0-4335-b357-5cdc17a79965",
+    "id": "9f472177-95c0-4335-b357-5cdc17a79965",
+    "nsr-id-ref": "dcf4c922-5a73-41bf-a6ca-870c22d6336c",
+    "vnfd-ref": "jar_vnfd_scalable",
+    "vnfd-id": "f1b38eac-190c-485d-9a74-c6e169c929d8",
+    "vim-account-id": "9b0bedc3-ea8e-42fd-acc9-dd03f4dee73c",
+}
+
+sample_vnfd = {
+    "_id": "97784f19-d254-4252-946c-cf92d85443ca",
+    "id": "sol006-vnf",
+    "provider": "Canonical",
+    "product-name": "test-vnf",
+    "software-version": "1.0",
+}
+
+
+class TestVnfDetails(asynctest.TestCase):
+    async def setUp(self):
+        self.db = Mock()
+        self.vnf_operations_instance = VnfOperations(self.db)
+        self.env = ActivityEnvironment()
+
+    async def test_activity_succeeded(self):
+        self.db.get_one.side_effect = [sample_vnfr, sample_vnfd]
+        activity_result = await self.env.run(
+            self.vnf_operations_instance.get_vnf_details,
+            GetVnfDetailsInput(vnfr_uuid=sample_vnfr["id"]),
+        )
+        self.assertEqual(activity_result.vnfd, sample_vnfd)
+        self.assertEqual(activity_result.vnfr, sample_vnfr)
+
+    async def test_activity_failed_db_exception(self):
+        self.db.get_one.side_effect = DbException("Can not connect to Database.")
+        with self.assertRaises(DbException) as err:
+            activity_result = await self.env.run(
+                self.vnf_operations_instance.get_vnf_details,
+                GetVnfDetailsInput(vnfr_uuid=sample_vnfr["id"]),
+            )
+            self.assertEqual(activity_result, None)
+        self.assertEqual(
+            str(err.exception), "database exception Can not connect to Database."
+        )
+
+    async def test_activity_failed_key_error(self):
+        vnfr = deepcopy(sample_vnfr)
+        vnfr.pop("vnfd-id")
+        self.db.get_one.side_effect = [vnfr, sample_vnfd]
+        with self.assertRaises(KeyError) as err:
+            activity_result = await self.env.run(
+                self.vnf_operations_instance.get_vnf_details,
+                GetVnfDetailsInput(vnfr_uuid=sample_vnfr["id"]),
+            )
+            self.assertEqual(activity_result, None)
+        self.assertEqual(str(err.exception.args[0]), "vnfd-id")
+
+    async def test_activity_cancelled(self):
+        self.env._cancelled = True
+        self.db.get_one.side_effect = [sample_vnfr, sample_vnfd]
+        with self.assertRaises(CancelledError):
+            activity_result = await self.env.run(
+                self.vnf_operations_instance.get_vnf_details,
+                GetVnfDetailsInput(vnfr_uuid=sample_vnfr["id"]),
+            )
+            self.assertEqual(activity_result, None)
+
+
+if __name__ == "__main__":
+    asynctest.main()