[ONOS-6641] VXLAN packet support

Change-Id: I7d2086cded3edafa26219609e4f3458b0ea394c0
diff --git a/utils/misc/src/test/java/org/onlab/packet/VXLANTest.java b/utils/misc/src/test/java/org/onlab/packet/VXLANTest.java
new file mode 100644
index 0000000..e33ee4b
--- /dev/null
+++ b/utils/misc/src/test/java/org/onlab/packet/VXLANTest.java
@@ -0,0 +1,128 @@
+/*
+ * Copyright 2017-present 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.onlab.packet;
+
+import com.google.common.testing.EqualsTester;
+import org.apache.commons.lang3.StringUtils;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+import static org.hamcrest.Matchers.is;
+import static org.junit.Assert.assertArrayEquals;
+import static org.junit.Assert.assertThat;
+import static org.junit.Assert.assertTrue;
+
+/**
+ * Tests for class {@link VXLAN}.
+ */
+public class VXLANTest {
+
+    private static final byte[] BYTE_PACKET_VXLAN = {
+            (byte) 0x08, // flags (8 bits)
+            (byte) 0x00, (byte) 0x00, (byte) 0x00, // rsvd1 (24 bits)
+            (byte) 0x12, (byte) 0x34, (byte) 0x56, // vni (24 bits)
+            (byte) 0x00, // rsvd2 (8 bits)
+    };
+
+    private static Deserializer<VXLAN> deserializer;
+
+    private static final UDP UDP_HDR = new UDP();
+
+    private static final int TEST_UDP_SRCPORT = 0x50;
+    private static final int TEST_FLAGS = 0x08;
+    private static final int TEST_VNI1 = 0x123456;
+    private static final int TEST_VNI2 = 0x654321;
+
+
+    @BeforeClass
+    public static void setUpBeforeClass() throws Exception {
+        deserializer = VXLAN.deserializer();
+        UDP_HDR.setSourcePort(TEST_UDP_SRCPORT);
+        UDP_HDR.setDestinationPort(UDP.VXLAN_UDP_PORT);
+    }
+
+    /**
+     * Tests serialize and setters.
+     */
+    @Test
+    public void testSerialize() {
+        VXLAN vxlan = new VXLAN();
+        vxlan.setFlag((byte) TEST_FLAGS);
+        vxlan.setVni(TEST_VNI1);
+        vxlan.setParent(UDP_HDR);
+        assertArrayEquals("Serialized packet is not matched", BYTE_PACKET_VXLAN, vxlan.serialize());
+    }
+
+    /**
+     * Tests deserialize bad input.
+     */
+    @Test
+    public void testDeserializeBadInput() throws Exception {
+        PacketTestUtils.testDeserializeBadInput(deserializer);
+    }
+
+    /**
+     * Tests deserialize truncated.
+     */
+    @Test
+    public void testDeserializeTruncated() throws Exception {
+        PacketTestUtils.testDeserializeTruncated(deserializer, BYTE_PACKET_VXLAN);
+    }
+
+    /**
+     * Tests deserialize and getters.
+     */
+    @Test
+    public void testDeserialize() throws Exception {
+        VXLAN vxlan = deserializer.deserialize(BYTE_PACKET_VXLAN, 0, BYTE_PACKET_VXLAN.length);
+
+        assertThat(vxlan.getFlag(), is((byte) TEST_FLAGS));
+        assertThat(vxlan.getVni(), is(TEST_VNI1));
+    }
+
+    /**
+     * Tests comparator.
+     */
+    @Test
+    public void testEqual() {
+        VXLAN vxlan1 = new VXLAN();
+        vxlan1.setFlag((byte) TEST_FLAGS);
+        vxlan1.setVni(TEST_VNI1);
+
+        VXLAN vxlan2 = new VXLAN();
+        vxlan2.setFlag((byte) TEST_FLAGS);
+        vxlan2.setVni(TEST_VNI2);
+
+        new EqualsTester()
+                .addEqualityGroup(vxlan1, vxlan1)
+                .addEqualityGroup(vxlan2).testEquals();
+    }
+
+    /**
+     * Tests toString.
+     */
+    @Test
+    public void testToStringVXLAN() throws Exception {
+        VXLAN vxlan = deserializer.deserialize(BYTE_PACKET_VXLAN, 0, BYTE_PACKET_VXLAN.length);
+        String str = vxlan.toString();
+
+        assertTrue(StringUtils.contains(str, "flags=" + TEST_FLAGS));
+        assertTrue(StringUtils.contains(str, "vni=" + TEST_VNI1));
+    }
+}