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diff --git a/tests/test_htbt_vnf_table.py b/tests/test_htbt_vnf_table.py
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+++ b/tests/test_htbt_vnf_table.py
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+# ============LICENSE_START=======================================================
+# Copyright (c) 2017-2023 AT&T Intellectual Property. All rights reserved.
+# Copyright (c) 2019 Pantheon.tech. All rights reserved.
+# Copyright (c) 2020 Deutsche Telekom. All rights reserved.
+# Copyright (c) 2021 Fujitsu Ltd.
+# ================================================================================
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# ============LICENSE_END=========================================================
+#
+#  Author Prakask H (ph553f)
+"""
+test_htbt_vnf_table contains test cases related to DB Tables and cbs polling.
+"""
+import logging
+import unittest
+import os
+from unittest.mock import *
+from mod.htbt_vnf_table import (
+    verify_DB_creation_1,
+    verify_DB_creation_2,
+    verify_DB_creation_hb_common,
+    hb_properties,
+    verify_cbspolling,
+    verify_sendControlLoop_VNF_ONSET,
+    verify_sendControlLoop_VM_ONSET,
+    verify_sendControlLoop_VNF_ABATED,
+    verify_sendControlLoop_VM_ABATED,
+    verify_fetch_json_file,
+    verify_misshtbtdmain,
+    verify_dbmonitoring,
+    verify_dbmon_startup,
+)
+
+_logger = logging.getLogger(__name__)
+
+
+class test_vnf_tables(unittest.TestCase):
+    """
+    Test the DB Creation
+    """
+
+    global ip_address, port_num, user_name, password, db_name, cbs_polling_required, cbs_polling_interval
+    ip_address, port_num, user_name, password, db_name, cbs_polling_required, cbs_polling_interval = hb_properties()
+
+    @patch('htbtworker.postgres_db_open')
+    @patch('misshtbtd.db_table_creation_check', return_value=True)
+    def test_validate_vnf_table_1(self, mock, mock1):
+        result = verify_DB_creation_1(user_name, password, ip_address, port_num, db_name)
+        self.assertEqual(result, True)
+
+    @patch('htbtworker.postgres_db_open')
+    @patch('misshtbtd.db_table_creation_check', return_value=True)
+    def test_validate_vnf_table_2(self, mock, mock1):
+        result = verify_DB_creation_2(user_name, password, ip_address, port_num, db_name)
+        self.assertEqual(result, True)
+
+    @patch('htbtworker.postgres_db_open')
+    @patch('misshtbtd.db_table_creation_check', return_value=True)
+    def test_validate_hb_common(self, mock, mock1):
+        result = verify_DB_creation_hb_common()
+        self.assertEqual(result, True)
+    
+    @patch('cbs_polling.poll_cbs')
+    def test_cbspolling(self, mock):
+        # Check if no exception thrown
+        verify_cbspolling()
+
+    @patch('misshtbtd.fetch_json_file')
+    def test_fetch_json_file(self, mock1):
+        configjsonfile = (os.path.dirname(__file__))+"/test-config.json"
+        mock1.return_value = configjsonfile
+        
+        result = verify_fetch_json_file()
+        _logger.info(result)
+        self.assertEqual(result, True)
+
+    @patch('misshtbtd.main')
+    def test_misshtbtdmain(self, mock):
+        result = verify_misshtbtdmain()
+        _logger.info(result)
+        self.assertEqual(result, True)
+
+    def test_dbmon_startup(self):
+        result = verify_dbmon_startup()
+        _logger.info(result)
+        self.assertEqual(result, True)
+
+    @patch('misshtbtd.fetch_json_file')
+    @patch('misshtbtd.read_hb_common')
+    @patch('db_monitoring.db_monitoring')
+    def test_dbmonitoring(self, mock1, mock2, mock3):
+        configjsonfile = (os.path.dirname(__file__))+"/test-config.json"
+        mock1.return_value = configjsonfile
+        mock2.return_value = ("1234","RUNNING", "XYZ", 1234)
+        
+        result = verify_dbmonitoring()
+        _logger.info(result)
+        self.assertEqual(result, True)
+
+    def test_sendControlLoop_VNF_ONSET(self):
+        result = verify_sendControlLoop_VNF_ONSET()
+        _logger.info(result)
+        self.assertEqual(result, True)
+
+    def test_sendControlLoop_VM_ONSET(self):
+        result = verify_sendControlLoop_VM_ONSET()
+        _logger.info(result)
+        self.assertEqual(result, True)
+
+    def test_sendControlLoop_VNF_ABATED(self):
+        result = verify_sendControlLoop_VNF_ABATED()
+        _logger.info(result)
+        self.assertEqual(result, True)
+
+    def test_sendControlLoop_VM_ABATED(self):
+        result = verify_sendControlLoop_VM_ABATED()
+        _logger.info(result)
+        self.assertEqual(result, True)