diff --git a/apps/vtn/vtnrsc/src/test/java/org/onosproject/vtnrsc/portpair/DefaultPortPairTest.java b/apps/vtn/vtnrsc/src/test/java/org/onosproject/vtnrsc/portpair/DefaultPortPairTest.java
new file mode 100644
index 0000000..91e7ab3
--- /dev/null
+++ b/apps/vtn/vtnrsc/src/test/java/org/onosproject/vtnrsc/portpair/DefaultPortPairTest.java
@@ -0,0 +1,102 @@
+/*
+ * 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 org.onosproject.vtnrsc.PortPairId;
+import org.onosproject.vtnrsc.TenantId;
+import org.onosproject.vtnrsc.PortPair;
+import org.onosproject.vtnrsc.DefaultPortPair;
+
+import com.google.common.testing.EqualsTester;
+
+/**
+ * Unit tests for DefaultPortPair class.
+ */
+public class DefaultPortPairTest {
+    /**
+     * Checks that the DefaultPortPair class is immutable.
+     */
+    @Test
+    public void testImmutability() {
+        assertThatClassIsImmutable(DefaultPortPair.class);
+    }
+
+    /**
+     * Checks the operation of equals() methods.
+     */
+    @Test
+    public void testEquals() {
+        // Create same two port pair objects.
+        final PortPairId portPairId = PortPairId.of("78888888-fc23-aeb6-f44b-56dc5e2fb3ae");
+        final TenantId tenantId = TenantId.tenantId("1");
+        final String name = "PortPair1";
+        final String description = "PortPair1";
+        final String ingress = "d3333333-24fc-4fae-af4b-321c5e2eb3d1";
+        final String egress = "a4444444-4a56-2a6e-cd3a-9dee4e2ec345";
+
+        DefaultPortPair.Builder portPairBuilder = new DefaultPortPair.Builder();
+        final PortPair portPair1 = portPairBuilder.setId(portPairId).setTenantId(tenantId).setName(name)
+                .setDescription(description).setIngress(ingress).setEgress(egress).build();
+
+        portPairBuilder = new DefaultPortPair.Builder();
+        final PortPair samePortPair1 = portPairBuilder.setId(portPairId).setTenantId(tenantId).setName(name)
+                .setDescription(description).setIngress(ingress).setEgress(egress).build();
+
+        // Create different port pair object.
+        final PortPairId portPairId2 = PortPairId.of("79999999-fc23-aeb6-f44b-56dc5e2fb3ae");
+        final TenantId tenantId2 = TenantId.tenantId("2");
+        final String name2 = "PortPair2";
+        final String description2 = "PortPair2";
+        final String ingress2 = "d5555555-24fc-4fae-af4b-321c5e2eb3d1";
+        final String egress2 = "a6666666-4a56-2a6e-cd3a-9dee4e2ec345";
+
+        portPairBuilder = new DefaultPortPair.Builder();
+        final PortPair portPair2 = portPairBuilder.setId(portPairId2).setTenantId(tenantId2).setName(name2)
+                .setDescription(description2).setIngress(ingress2).setEgress(egress2).build();
+
+        new EqualsTester().addEqualityGroup(portPair1, samePortPair1).addEqualityGroup(portPair2).testEquals();
+    }
+
+    /**
+     * Checks the construction of a DefaultPortPair object.
+     */
+    @Test
+    public void testConstruction() {
+        final PortPairId portPairId = PortPairId.of("78888888-fc23-aeb6-f44b-56dc5e2fb3ae");
+        final TenantId tenantId = TenantId.tenantId("1");
+        final String name = "PortPair";
+        final String description = "PortPair";
+        final String ingress = "d3333333-24fc-4fae-af4b-321c5e2eb3d1";
+        final String egress = "a4444444-4a56-2a6e-cd3a-9dee4e2ec345";
+
+        DefaultPortPair.Builder portPairBuilder = new DefaultPortPair.Builder();
+        final PortPair portPair = portPairBuilder.setId(portPairId).setTenantId(tenantId).setName(name)
+                .setDescription(description).setIngress(ingress).setEgress(egress).build();
+
+        assertThat(portPairId, is(portPair.portPairId()));
+        assertThat(tenantId, is(portPair.tenantId()));
+        assertThat(name, is(portPair.name()));
+        assertThat(description, is(portPair.description()));
+        assertThat(ingress, is(portPair.ingress()));
+        assertThat(egress, is(portPair.egress()));
+    }
+}