diff --git a/apps/vtn/vtnrsc/src/test/java/org/onosproject/vtnrsc/portpairgroup/DefaultPortPairGroupTest.java b/apps/vtn/vtnrsc/src/test/java/org/onosproject/vtnrsc/portpairgroup/DefaultPortPairGroupTest.java
new file mode 100644
index 0000000..2528fb2
--- /dev/null
+++ b/apps/vtn/vtnrsc/src/test/java/org/onosproject/vtnrsc/portpairgroup/DefaultPortPairGroupTest.java
@@ -0,0 +1,117 @@
+/*
+ * 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.flowclassifier;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.is;
+import static org.onlab.junit.ImmutableClassChecker.assertThatClassIsImmutable;
+
+import org.junit.Test;
+import java.util.List;
+import java.util.LinkedList;
+
+import org.onosproject.vtnrsc.PortPairGroupId;
+import org.onosproject.vtnrsc.PortPairId;
+import org.onosproject.vtnrsc.TenantId;
+import org.onosproject.vtnrsc.PortPairGroup;
+import org.onosproject.vtnrsc.DefaultPortPairGroup;
+
+import com.google.common.testing.EqualsTester;
+
+/**
+ * Unit tests for DefaultPortPairGroup class.
+ */
+public class DefaultPortPairGroupTest {
+    /**
+     * Checks that the DefaultPortPairGroup class is immutable.
+     */
+    @Test
+    public void testImmutability() {
+        assertThatClassIsImmutable(DefaultPortPairGroup.class);
+    }
+
+    /**
+     * Checks the operation of equals() methods.
+     */
+    @Test
+    public void testEquals() {
+        // Create same two port-pair-group objects.
+        final PortPairGroupId portPairGroupId = PortPairGroupId.of("78888888-fc23-aeb6-f44b-56dc5e2fb3ae");
+        final TenantId tenantId = TenantId.tenantId("1");
+        final String name = "PortPairGroup1";
+        final String description = "PortPairGroup1";
+        // create port-pair-id list
+        final List<PortPairId> portPairList = new LinkedList<PortPairId>();
+        PortPairId portPairId = PortPairId.of("73333333-fc23-aeb6-f44b-56dc5e2fb3ae");
+        portPairList.add(portPairId);
+        portPairId = PortPairId.of("74444444-fc23-aeb6-f44b-56dc5e2fb3ae");
+        portPairList.add(portPairId);
+
+        DefaultPortPairGroup.Builder portPairGroupBuilder = new DefaultPortPairGroup.Builder();
+        final PortPairGroup portPairGroup1 = portPairGroupBuilder.setId(portPairGroupId).setTenantId(tenantId)
+                .setName(name).setDescription(description).setPortPairs(portPairList).build();
+
+        portPairGroupBuilder = new DefaultPortPairGroup.Builder();
+        final PortPairGroup samePortPairGroup1 = portPairGroupBuilder.setId(portPairGroupId).setTenantId(tenantId)
+                .setName(name).setDescription(description).setPortPairs(portPairList).build();
+
+        // Create different port-pair-group object.
+        final PortPairGroupId portPairGroupId2 = PortPairGroupId.of("79999999-fc23-aeb6-f44b-56dc5e2fb3ae");
+        final TenantId tenantId2 = TenantId.tenantId("2");
+        final String name2 = "PortPairGroup2";
+        final String description2 = "PortPairGroup2";
+        // create port-pair-id list
+        final List<PortPairId> portPairList2 = new LinkedList<PortPairId>();
+        portPairId = PortPairId.of("75555555-fc23-aeb6-f44b-56dc5e2fb3ae");
+        portPairList2.add(portPairId);
+        portPairId = PortPairId.of("75555555-fc23-aeb6-f44b-56dc5e2fb3ae");
+        portPairList2.add(portPairId);
+
+        portPairGroupBuilder = new DefaultPortPairGroup.Builder();
+        final PortPairGroup portPairGroup2 = portPairGroupBuilder.setId(portPairGroupId2).setTenantId(tenantId2)
+                .setName(name2).setDescription(description2).setPortPairs(portPairList2).build();
+
+        new EqualsTester().addEqualityGroup(portPairGroup1, samePortPairGroup1).addEqualityGroup(portPairGroup2)
+                .testEquals();
+    }
+
+    /**
+     * Checks the construction of a DefaultPortPairGroup object.
+     */
+    @Test
+    public void testConstruction() {
+        final PortPairGroupId portPairGroupId = PortPairGroupId.of("78888888-fc23-aeb6-f44b-56dc5e2fb3ae");
+        final TenantId tenantId = TenantId.tenantId("1");
+        final String name = "PortPairGroup";
+        final String description = "PortPairGroup";
+        // create port-pair-id list
+        final List<PortPairId> portPairList = new LinkedList<PortPairId>();
+        PortPairId portPairId = PortPairId.of("73333333-fc23-aeb6-f44b-56dc5e2fb3ae");
+        portPairList.add(portPairId);
+        portPairId = PortPairId.of("74444444-fc23-aeb6-f44b-56dc5e2fb3ae");
+        portPairList.add(portPairId);
+
+        DefaultPortPairGroup.Builder portPairGroupBuilder = new DefaultPortPairGroup.Builder();
+        final PortPairGroup portPairGroup = portPairGroupBuilder.setId(portPairGroupId).setTenantId(tenantId)
+                .setName(name).setDescription(description).setPortPairs(portPairList).build();
+
+        assertThat(portPairGroupId, is(portPairGroup.portPairGroupId()));
+        assertThat(tenantId, is(portPairGroup.tenantId()));
+        assertThat(name, is(portPairGroup.name()));
+        assertThat(description, is(portPairGroup.description()));
+        assertThat(portPairList, is(portPairGroup.portPairs()));
+    }
+}