Fixed bug in NetUtils.isMulticastMACAddr() caused by sign extension.

[controller.git] / opendaylight / sal / api / src / test / java / org / opendaylight / controller / sal / utils / NetUtilsTest.java

diff --git a/opendaylight/sal/api/src/test/java/org/opendaylight/controller/sal/utils/NetUtilsTest.java b/opendaylight/sal/api/src/test/java/org/opendaylight/controller/sal/utils/NetUtilsTest.java
index b8bc6fb4470901c0761df18e51482489c7e4325b..e5e0a0941b7db0ccb6b647b313096f64def5fa90 100644 (file)
--- a/opendaylight/sal/api/src/test/java/org/opendaylight/controller/sal/utils/NetUtilsTest.java
+++ b/opendaylight/sal/api/src/test/java/org/opendaylight/controller/sal/utils/NetUtilsTest.java
@@ -1,6 +1,5 @@
-
 /*
- * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
+ * Copyright (c) 2013-2014 Cisco Systems, Inc. and others.  All rights reserved.
  *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
@@ -449,4 +448,55 @@ public class NetUtilsTest {
         Assert.assertTrue(NetUtils
                 .isIPAddressValid("2001:420:281:1004:407a:57f4:4d15:c355"));
     }
+
+    @Test
+    public void testGetUnsignedByte() {
+        Assert.assertEquals(0,   NetUtils.getUnsignedByte((byte) 0x00));
+        Assert.assertEquals(1,   NetUtils.getUnsignedByte((byte) 0x01));
+        Assert.assertEquals(127, NetUtils.getUnsignedByte((byte) 0x7f));
+
+        Assert.assertEquals(128, NetUtils.getUnsignedByte((byte) 0x80));
+        Assert.assertEquals(255, NetUtils.getUnsignedByte((byte) 0xff));
+    }
+
+    @Test
+    public void testGetUnsignedShort() {
+        Assert.assertEquals(0,     NetUtils.getUnsignedShort((short) 0x0000));
+        Assert.assertEquals(1,     NetUtils.getUnsignedShort((short) 0x0001));
+        Assert.assertEquals(32767, NetUtils.getUnsignedShort((short) 0x7fff));
+
+        Assert.assertEquals(32768, NetUtils.getUnsignedShort((short) 0x8000));
+        Assert.assertEquals(65535, NetUtils.getUnsignedShort((short) 0xffff));
+    }
+
+    @Test
+    public void testMulticastMACAddr() {
+        byte[] empty = new byte[0];
+        Assert.assertFalse(NetUtils.isUnicastMACAddr(empty));
+        Assert.assertFalse(NetUtils.isMulticastMACAddr(empty));
+
+        byte[] bcast = {
+            (byte)0xff, (byte)0xff, (byte)0xff,
+            (byte)0xff, (byte)0xff, (byte)0xff,
+        };
+        Assert.assertFalse(NetUtils.isUnicastMACAddr(bcast));
+        Assert.assertFalse(NetUtils.isMulticastMACAddr(bcast));
+
+        byte[] firstOctet = {
+            (byte)0x00, (byte)0x20, (byte)0x80, (byte)0xfe,
+        };
+        for (int len = 1; len <= 10; len++) {
+            byte[] ba = new byte[len];
+            boolean valid = (len == 6);
+            for (byte first: firstOctet) {
+                ba[0] = first;
+                Assert.assertFalse(NetUtils.isMulticastMACAddr(ba));
+                Assert.assertEquals(valid, NetUtils.isUnicastMACAddr(ba));
+
+                ba[0] |= (byte)0x01;
+                Assert.assertEquals(valid, NetUtils.isMulticastMACAddr(ba));
+                Assert.assertFalse(NetUtils.isUnicastMACAddr(ba));
+            }
+        }
+    }
 }