Add some unit tests for IPv6.

src/test/java/net/floodlightcontroller/packet/IPv6Test.java

+package net.floodlightcontroller.packet;
+
+import static org.junit.Assert.assertTrue;
+import java.util.Arrays;
+import org.junit.Test;
+import org.projectfloodlight.openflow.types.IPv6Address;
+import org.projectfloodlight.openflow.types.IpProtocol;
+
+/**
+ * @author Jacob Chappell (jacob.chappell@uky.edu)
+ */
+public class IPv6Test {
+    @Test
+    public void testSerializeWithoutPayload() {
+        byte[] expected = new byte[] {
+                0x64, 0x2B, 0x16, (byte) 0x95, 0x00, 0x00,
+                0x11, (byte) 0xE1, (byte) 0xFE, (byte) 0x80,
+                0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                0x7A, (byte) 0xC5, (byte) 0xFF, (byte) 0xFE,
+                0x2E, 0x77, 0x35, (byte) 0xFE, (byte) 0x80,
+                0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                0x77, 0x5D, (byte) 0xFF, (byte) 0xFE,
+                (byte) 0xC2, 0x30, (byte) 0xFD
+        };
+        IPv6 packet = (new IPv6())
+            .setTrafficClass((byte) 0x42)
+            .setFlowLabel(0xB1695)
+            .setPayloadLength((short) 0)
+            .setNextHeader(IpProtocol.of((short) 0x11))
+            .setHopLimit((byte) 0xE1)
+            .setSourceAddress(IPv6Address.of("fe80::7a:c5ff:fe2e:7735"))
+            .setDestinationAddress(IPv6Address.of("fe80::77:5dff:fec2:30fd"));
+        byte[] actual = packet.serialize();
+        assertTrue(Arrays.equals(expected, actual));
+    }
+
+    @Test
+    public void testDeserialize() throws PacketParsingException {
+        byte[] spudPacket = {
+                0x64, 0x2B, 0x16, (byte) 0x95, 0x00, 0x15,
+                0x11, (byte) 0xE1, (byte) 0xFE, (byte) 0x80,
+                0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                0x7A, (byte) 0xC5, (byte) 0xFF, (byte) 0xFE,
+                0x2E, 0x77, 0x35, (byte) 0xFE, (byte) 0x80,
+                0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                0x77, 0x5D, (byte) 0xFF, (byte) 0xFE,
+                (byte) 0xC2, 0x30, (byte) 0xFD, (byte) 0xD2,
+                0x01, 0x05, 0x7A, 0x00, 0x15, (byte) 0xF6,
+                (byte) 0xC8, (byte) 0xD8, 0x00, 0x00,
+                (byte) 0xD8, 0x4A, (byte) 0xC3, (byte) 0xF2,
+                0x02, 0x44, 0x75, (byte) 0x97, 0x69, 0x40
+        };
+        IPv6 packet = new IPv6();
+        packet.deserialize(spudPacket, 0, spudPacket.length);
+        byte[] packetSerialized = packet.serialize();
+        assertTrue(Arrays.equals(spudPacket, packetSerialized));
+    }
+}