1 /*
2  * Copyright (c) 1999, 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 package test.java.net.InetAddress;
24 
25 /*
26  * @test
27  * @author Gary Ellison
28  * @bug 4208282
29  * @summary java.net.InetAddress.getByName caching unknown host lookups
30  */
31 
32 import java.net.InetAddress;
33 
34 import org.testng.annotations.Test;
35 import static org.testng.Assert.fail;
36 
37 public class CachedUnknownHostName {
38     @Test
testCachedUnknown()39     public void testCachedUnknown() throws Exception {
40         String hostname = new String("bogusHostName");
41 
42         try {
43             InetAddress.getByName(hostname);
44             fail("Missing java.net.UnknownHostException");
45         } catch(java.net.UnknownHostException e) {
46         }
47 
48         try {
49             InetAddress.getByName(hostname);
50             fail("Missing java.net.UnknownHostException");
51         } catch(java.net.UnknownHostException e) {
52         }
53     }
54 }