renamed IpAddress to IpPrefix

Change-Id: I35990622e5b1c29ab6f6a0a0227088cd5d6c7294
diff --git a/utils/misc/src/test/java/org/onlab/packet/VlanIdTest.java b/utils/misc/src/test/java/org/onlab/packet/VlanIdTest.java
new file mode 100644
index 0000000..dde9c3c
--- /dev/null
+++ b/utils/misc/src/test/java/org/onlab/packet/VlanIdTest.java
@@ -0,0 +1,38 @@
+package org.onlab.packet;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+
+import com.google.common.testing.EqualsTester;
+
+public class VlanIdTest {
+
+    @Test
+    public void testEquality() {
+
+        VlanId vlan1 = VlanId.vlanId((short) -1);
+        VlanId vlan2 = VlanId.vlanId((short) 100);
+        VlanId vlan3 = VlanId.vlanId((short) 100);
+
+        new EqualsTester().addEqualityGroup(VlanId.vlanId(), vlan1)
+        .addEqualityGroup(vlan2, vlan3)
+        .addEqualityGroup(VlanId.vlanId((short) 10));
+
+    }
+
+    @Test
+    public void basics() {
+        // purposefully create UNTAGGED VLAN
+        VlanId vlan1 = VlanId.vlanId((short) 10);
+        VlanId vlan2 = VlanId.vlanId((short) -1);
+
+        assertEquals("incorrect VLAN value", 10, vlan1.toShort());
+        assertEquals("invalid untagged value", VlanId.UNTAGGED, vlan2.toShort());
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testIllicitVLAN() {
+        VlanId.vlanId((short) 5000);
+    }
+}