diff --git a/apps/openstacktelemetry/app/src/test/java/org/onosproject/openstacktelemetry/impl/PrometheusTelemetryManagerTest.java b/apps/openstacktelemetry/app/src/test/java/org/onosproject/openstacktelemetry/impl/PrometheusTelemetryManagerTest.java
new file mode 100644
index 0000000..d4296be
--- /dev/null
+++ b/apps/openstacktelemetry/app/src/test/java/org/onosproject/openstacktelemetry/impl/PrometheusTelemetryManagerTest.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.
+ */
+package org.onosproject.openstacktelemetry.impl;
+
+import org.junit.Test;
+import org.onlab.junit.TestUtils;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+/**
+ * Unit tests for prometheus telemetry manager.
+ */
+public final class PrometheusTelemetryManagerTest {
+
+    private PrometheusTelemetryManager manager;
+    private OpenstackTelemetryServiceAdapter telemetryService =
+            new OpenstackTelemetryServiceAdapter();
+
+    /**
+     * Tests app activation and deactivation.
+     */
+    @Test
+    public void testActivateDeactivate() {
+        manager = new PrometheusTelemetryManager();
+
+        TestUtils.setField(manager, "openstackTelemetryService", telemetryService);
+
+        manager.activate();
+
+        assertTrue(telemetryService.services.contains(manager));
+
+        manager.deactivate();
+
+        assertFalse(telemetryService.services.contains(manager));
+    }
+}