[ONOS-2613] Unit test the BGP Update message

Change-Id: I23dd8200c727716b2d0c67d7d2e0dab81b7a550f

+/*
+ * Copyright 2014-2015 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.bgp;
+
+import org.junit.Test;
+import org.onosproject.bgpio.types.IPReachabilityInformationTlv;
+
+import com.google.common.testing.EqualsTester;
+
+/**
+ * Test for IPReachabilityInformation Tlv.
+ */
+public class IPReachabilityInformationTest {
+    private final byte[] value1 = new byte[] {(byte) 0xc0, (byte) 0xa8, 0x4d, 0x01};
+    private final byte[] value2 = new byte[] {(byte) 0xc0};
+    private final IPReachabilityInformationTlv tlv1 = IPReachabilityInformationTlv.of((byte) 0x17, value1, (short) 4);
+    private final IPReachabilityInformationTlv sameAsTlv1 = IPReachabilityInformationTlv
+                                                             .of((byte) 0x17, value1, (short) 4);
+    private final IPReachabilityInformationTlv tlv2 = IPReachabilityInformationTlv.of((byte) 0x05, value2, (short) 1);
+
+    @Test
+    public void basics() {
+        new EqualsTester()
+        .addEqualityGroup(tlv1, sameAsTlv1)
+        .addEqualityGroup(tlv2)
+        .testEquals();
+    }
+}
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