diff --git a/monasca_persister/tests/test_influxdb_metrics_repository.py b/monasca_persister/tests/test_influxdb_metrics_repository.py
new file mode 100644
index 00000000..d8280d1f
--- /dev/null
+++ b/monasca_persister/tests/test_influxdb_metrics_repository.py
@@ -0,0 +1,63 @@
+# (C) Copyright 2019 Fujitsu Limited
+#
+# 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.
+
+from mock import Mock
+from mock import patch
+from six import string_types
+
+from oslotest import base
+from oslo_config import cfg
+
+from monasca_persister.repositories.influxdb.metrics_repository import MetricInfluxdbRepository
+
+
+class TestMetricInfluxdbRepository(base.BaseTestCase):
+
+    def setUp(self):
+        super(TestMetricInfluxdbRepository, self).setUp()
+
+    def tearDown(self):
+        super(TestMetricInfluxdbRepository, self).tearDown()
+
+    def test_process_message(self):
+        metric = self._get_metric()
+        with patch.object(cfg, 'CONF', return_value=None):
+            metric_repo = MetricInfluxdbRepository()
+            self.assertIsInstance(metric_repo.process_message(metric), string_types)
+
+    def _get_metric(self):
+        metric = '''
+            {
+              "metric":
+              {
+                "timestamp":1554725987408.1049804688,
+                "name":"process.cpu_perc",
+                "dimensions":
+                {
+                  "process_name":"persister",
+                  "hostname":"devstack",
+                  "service":"persister"
+                },
+                "value":7.5,
+                "value_meta":null},
+                "meta":
+                {
+                  "region":"RegionOne",
+                  "tenantId":"df4c002353de4399b92fa79d8374819b"
+                },
+                "creation_time":1554725988
+            }
+        '''
+        return Mock(message=Mock(value=metric))