1 /*
   2  * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @summary <rdar://problem/4571574> [JavaJDK16] JSE60R1DP2: java.net.NetworkInterface.getHardwareAddress returns null
  27  * @summary com.apple.junit.java.net
  28  */
  29 
  30 import junit.framework.*;
  31 import java.net.NetworkInterface;
  32 import java.util.Enumeration;
  33 
  34 public class R4571574GetHardwareAddressTest extends TestCase
  35 {
  36     public static Test suite() {
  37         return new TestSuite(R4571574GetHardwareAddressTest.class);
  38     }
  39 
  40     public static void main (String[] args) throws RuntimeException {
  41         TestResult tr = junit.textui.TestRunner.run(suite());
  42         if ((tr.errorCount() != 0) || (tr.failureCount() != 0)) {
  43             throw new RuntimeException("### FAILED: unexpected JUnit errors or failures.");
  44         }
  45     }
  46 
  47     /**
  48      * Makes sure getHardwareAddress returns us something other than null.
  49      */
  50     public void testGetHardwareAddress() throws Exception
  51     {
  52         boolean foundOne = false;
  53         Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
  54         if (interfaces != null) {
  55             while (!foundOne && interfaces.hasMoreElements()) {
  56                 NetworkInterface ni = interfaces.nextElement();
  57                 if (ni != null) {
  58                     byte[] macAddressBytes = ni.getHardwareAddress();
  59                     if (macAddressBytes != null) {
  60                         foundOne=true;
  61                     }
  62                 }
  63             }
  64         }
  65         assertTrue("Did not get a hardware address", foundOne);
  66     }
  67 }