diff --git a/apps/vtn/vtnrsc/src/test/java/org/onosproject/vtnrsc/portpairgroup/PortPairGroupIdTest.java b/apps/vtn/vtnrsc/src/test/java/org/onosproject/vtnrsc/portpairgroup/PortPairGroupIdTest.java
new file mode 100644
index 0000000..7da4c48
--- /dev/null
+++ b/apps/vtn/vtnrsc/src/test/java/org/onosproject/vtnrsc/portpairgroup/PortPairGroupIdTest.java
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2015 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.vtnrsc.portpair;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.is;
+import static org.hamcrest.Matchers.notNullValue;
+import static org.onlab.junit.ImmutableClassChecker.assertThatClassIsImmutable;
+
+import org.junit.Test;
+import org.onosproject.vtnrsc.PortPairGroupId;
+
+import com.google.common.testing.EqualsTester;
+import java.util.UUID;
+
+/**
+ * Unit tests for PortPairGroupId class.
+ */
+public class PortPairGroupIdTest {
+
+    final PortPairGroupId portPairGroupId1 = PortPairGroupId.of("78dcd363-fc23-aeb6-f44b-56dc5e2fb3ae");
+    final PortPairGroupId sameAsPortPairGroupId1 = PortPairGroupId
+            .of("78dcd363-fc23-aeb6-f44b-56dc5e2fb3ae");
+    final PortPairGroupId portPairGroupId2 = PortPairGroupId.of("dace4513-24fc-4fae-af4b-321c5e2eb3d1");
+
+    /**
+     * Checks that the PortPairGroupId class is immutable.
+     */
+    @Test
+    public void testImmutability() {
+        assertThatClassIsImmutable(PortPairGroupId.class);
+    }
+
+    /**
+     * Checks the operation of equals() methods.
+     */
+    @Test
+    public void testEquals() {
+        new EqualsTester().addEqualityGroup(portPairGroupId1, sameAsPortPairGroupId1)
+                .addEqualityGroup(portPairGroupId2).testEquals();
+    }
+
+    /**
+     * Checks the construction of a PortPairGroupId object.
+     */
+    @Test
+    public void testConstruction() {
+        final String portPairGroupIdValue = "dace4513-24fc-4fae-af4b-321c5e2eb3d1";
+        final PortPairGroupId portPairGroupId = PortPairGroupId.of(portPairGroupIdValue);
+        assertThat(portPairGroupId, is(notNullValue()));
+        assertThat(portPairGroupId.value(), is(UUID.fromString(portPairGroupIdValue)));
+    }
+}