diff --git a/apps/graphitemetrics/src/test/java/org/onosproject/graphitemetrics/GraphiteMetricsReporterTest.java b/apps/graphitemetrics/src/test/java/org/onosproject/graphitemetrics/GraphiteMetricsReporterTest.java
new file mode 100644
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+++ b/apps/graphitemetrics/src/test/java/org/onosproject/graphitemetrics/GraphiteMetricsReporterTest.java
@@ -0,0 +1,250 @@
+/*
+ * Copyright 2016 Open Networking Laboratory
+ *
+ * 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.graphitemetrics;
+
+import com.codahale.metrics.Counter;
+import com.codahale.metrics.Gauge;
+import com.codahale.metrics.Histogram;
+import com.codahale.metrics.Meter;
+import com.codahale.metrics.Metric;
+import com.codahale.metrics.MetricFilter;
+import com.codahale.metrics.MetricRegistry;
+import com.codahale.metrics.Timer;
+import com.google.common.collect.ImmutableSet;
+import org.junit.Before;
+import org.junit.Test;
+import org.onlab.metrics.MetricsComponent;
+import org.onlab.metrics.MetricsFeature;
+import org.onlab.metrics.MetricsService;
+import org.onosproject.cfg.ComponentConfigAdapter;
+import org.onosproject.core.CoreServiceAdapter;
+
+import java.util.Map;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.junit.Assert.assertNotNull;
+
+/**
+ * Unit test for metrics reporter of graphite.
+ */
+public class GraphiteMetricsReporterTest {
+
+    private GraphiteMetricsReporter gmr;
+
+    private static final String METRIC_NAME1 = "consistentMap.onos-app-ids.putIfAbsent";
+    private static final String METRIC_NAME2 = "consistentMap.onos-hosts.entrySet";
+    private static final String METRIC_NAME3 = "clusterCommunication.endpoint.*";
+    private static final String METRIC_NAME4 = "atomicCounter.onos-app-id-counter.*";
+
+    private static final String PREFIXES1 = "consistentMap";
+    private static final String PREFIXES2 = "topology";
+    private static final String PREFIXES3 = "consistentMap.onos-app-ids";
+    private static final String PREFIXES4 = "consistentMap, clusterCommunication, atomicCounter";
+
+    /**
+     * Sets up graphite metrics reporter instance.
+     */
+    @Before
+    public void setUp() {
+        gmr = new GraphiteMetricsReporter();
+        gmr.coreService = new CoreServiceAdapter();
+        gmr.cfgService = new ComponentConfigAdapter();
+        gmr.metricsService = new TestMetricsService();
+        gmr.activate();
+    }
+
+    /**
+     * Tears down graphite metrics reporter instance.
+     */
+    public void tearDown() {
+        gmr.deactivate();
+    }
+
+    /**
+     * Tests whether the containsName method can always return the correct result
+     * with the given metric name and a set of prefixes.
+     */
+    @Test
+    public void testContainsName() {
+        assertTrue(gmr.containsName(METRIC_NAME1, PREFIXES1));
+        assertTrue(gmr.containsName(METRIC_NAME1, PREFIXES3));
+        assertTrue(gmr.containsName(METRIC_NAME1, PREFIXES4));
+        assertTrue(gmr.containsName(METRIC_NAME2, PREFIXES4));
+        assertTrue(gmr.containsName(METRIC_NAME3, PREFIXES4));
+        assertTrue(gmr.containsName(METRIC_NAME4, PREFIXES4));
+        assertFalse(gmr.containsName(METRIC_NAME1, PREFIXES2));
+    }
+
+    /**
+     * Tests whether the filter method can always return the correct result.
+     */
+    @Test
+    public void testFilter() {
+        MetricRegistry filtered;
+        MetricRegistry full = new MetricRegistry();
+        full.meter(METRIC_NAME1);
+        full.meter(METRIC_NAME2);
+        full.meter(METRIC_NAME3);
+        full.meter(METRIC_NAME4);
+
+        gmr.monitorAll = true;
+        filtered = gmr.filter(full);
+
+        assertTrue(filtered.getNames()
+                .containsAll(ImmutableSet.of(METRIC_NAME1, METRIC_NAME2,
+                                             METRIC_NAME3, METRIC_NAME4)));
+
+        gmr.monitorAll = false;
+        gmr.metricNames = PREFIXES1;
+        filtered = gmr.filter(full);
+
+        assertTrue(filtered.getNames()
+                .containsAll(ImmutableSet.of(METRIC_NAME1, METRIC_NAME2)));
+        assertFalse(filtered.getNames()
+                .containsAll(ImmutableSet.of(METRIC_NAME3, METRIC_NAME4)));
+
+        gmr.metricNames = PREFIXES2;
+        filtered = gmr.filter(full);
+
+        assertFalse(filtered.getNames().containsAll(ImmutableSet.of(METRIC_NAME1)));
+
+        gmr.metricNames = PREFIXES3;
+        filtered = gmr.filter(full);
+
+        assertTrue(filtered.getNames().containsAll(ImmutableSet.of(METRIC_NAME1)));
+        assertFalse(filtered.getNames().containsAll(ImmutableSet.of(METRIC_NAME2)));
+
+        gmr.metricNames = PREFIXES4;
+        filtered = gmr.filter(full);
+
+        assertTrue(filtered.getNames()
+                .containsAll(ImmutableSet.of(METRIC_NAME1, METRIC_NAME2,
+                        METRIC_NAME3, METRIC_NAME4)));
+    }
+
+    /**
+     * Tests whether the methods of MetricsService receives null value parameter.
+     */
+    private class TestMetricsService implements MetricsService {
+
+        @Override
+        public MetricsComponent registerComponent(String name) {
+            assertNotNull("Component name is null.", name);
+            return null;
+        }
+
+        @Override
+        public MetricRegistry getMetricRegistry() {
+            return null;
+        }
+
+        @Override
+        public Counter createCounter(MetricsComponent component,
+                                     MetricsFeature feature, String metricName) {
+            assertNotNull("MetricsComponent is null.", component);
+            assertNotNull("MetricsFeature is null.", feature);
+            assertNotNull("Metric name is null.", metricName);
+            return null;
+        }
+
+        @Override
+        public Histogram createHistogram(MetricsComponent component,
+                                         MetricsFeature feature, String metricName) {
+            assertNotNull("MetricsComponent is null.", component);
+            assertNotNull("MetricsFeature is null.", feature);
+            assertNotNull("Metric name is null.", metricName);
+            return null;
+        }
+
+        @Override
+        public Timer createTimer(MetricsComponent component,
+                                 MetricsFeature feature, String metricName) {
+            assertNotNull("MetricsComponent is null.", component);
+            assertNotNull("MetricsFeature is null.", feature);
+            assertNotNull("Metric name is null.", metricName);
+            return null;
+        }
+
+        @Override
+        public Meter createMeter(MetricsComponent component,
+                                 MetricsFeature feature, String metricName) {
+            assertNotNull("MetricsComponent is null.", component);
+            assertNotNull("MetricsFeature is null.", feature);
+            assertNotNull("Metric name is null.", metricName);
+            return null;
+        }
+
+        @Override
+        public <T extends Metric> T registerMetric(MetricsComponent component,
+                                                   MetricsFeature feature, String metricName, T metric) {
+            assertNotNull("MetricsComponent is null.", component);
+            assertNotNull("MetricsFeature is null.", feature);
+            assertNotNull("Metric name is null.", metricName);
+            assertNotNull("Metric is null.", metric);
+            return null;
+        }
+
+        @Override
+        public boolean removeMetric(MetricsComponent component,
+                                    MetricsFeature feature, String metricName) {
+            assertNotNull("MetricsComponent is null.", component);
+            assertNotNull("MetricsFeature is null.", feature);
+            assertNotNull("Metric name is null.", metricName);
+            return false;
+        }
+
+        @Override
+        public Map<String, Timer> getTimers(MetricFilter filter) {
+            assertNotNull("MetricFilter is null.", filter);
+            return null;
+        }
+
+        @Override
+        public Map<String, Gauge> getGauges(MetricFilter filter) {
+            assertNotNull("MetricFilter is null.", filter);
+            return null;
+        }
+
+        @Override
+        public Map<String, Counter> getCounters(MetricFilter filter) {
+            assertNotNull("MetricFilter is null.", filter);
+            return null;
+        }
+
+        @Override
+        public Map<String, Meter> getMeters(MetricFilter filter) {
+            assertNotNull("MetricFilter is null.", filter);
+            return null;
+        }
+
+        @Override
+        public Map<String, Histogram> getHistograms(MetricFilter filter) {
+            assertNotNull("MetricFilter is null.", filter);
+            return null;
+        }
+
+        @Override
+        public Map<String, Metric> getMetrics() {
+            return null;
+        }
+
+        @Override
+        public void removeMatching(MetricFilter filter) {
+            assertNotNull("MetricFilter is null.", filter);
+        }
+    }
+}