Activity Delete VNF record

Change-Id: I8c557ebc00833a64041e1c70cc9c6fec4c1a769c
Signed-off-by: Patricia Reinoso <patricia.reinoso@canonical.com>
Signed-off-by: Mark Beierl <mark.beierl@canonical.com>
diff --git a/osm_lcm/tests/test_vnf_activities.py b/osm_lcm/tests/test_vnf_activities.py
index 374a648..64d9caf 100644
--- a/osm_lcm/tests/test_vnf_activities.py
+++ b/osm_lcm/tests/test_vnf_activities.py
@@ -22,6 +22,7 @@
 from osm_common.dbbase import DbException
 from osm_common.temporal_task_queues.task_queues_mappings import LCM_TASK_QUEUE
 from osm_lcm.temporal.vnf_activities import (
+    DeleteVnfRecordImpl,
     ChangeVnfInstantiationStateImpl,
     ChangeVnfStateImpl,
     GetModelNamesImpl,
@@ -269,6 +270,31 @@
             )
 
 
+class TestDeleteVnfRecord(asynctest.TestCase):
+    async def setUp(self):
+        self.db = Mock()
+        self.delete_vnf_record = DeleteVnfRecordImpl(self.db)
+        self.env = ActivityEnvironment()
+
+    async def test_activity__succeeded__expected_record_is_deleted(self):
+        self.db.del_one.return_value = None
+        await self.env.run(
+            self.delete_vnf_record,
+            DeleteVnfRecordImpl.Input(vnfr_uuid=vnfr_uuid),
+        )
+        self.db.del_one.assert_called_with(
+            "vnfrs", {"_id": vnfr_uuid}, fail_on_empty=False
+        )
+
+    async def test_activity__failed__raise_db_exception(self):
+        self.db.del_one.side_effect = DbException("Can not connect to Database.")
+        with self.assertRaises(DbException):
+            await self.env.run(
+                self.delete_vnf_record,
+                DeleteVnfRecordImpl.Input(vnfr_uuid=vnfr_uuid),
+            )
+
+
 class TestGetVimCloud(asynctest.TestCase):
     async def setUp(self):
         self.db = Mock()