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 
24 /*
25  * @test
26  * @bug 4256589
27  * @summary Test if getPackage() and getPackages()
28  *          return consistent values.
29  */
30 
31 public class GetPackage {
main(String arg[])32     public static void main(String arg[]) throws Exception {
33         TestClassLoader parent = new TestClassLoader();
34         TestClassLoader child = new TestClassLoader(parent);
35         // child define a package first
36         child.defineEmptyPackage("foo");
37         // parent then define another package with the same name
38         parent.defineEmptyPackage("foo");
39         if (!child.testPackageView("foo"))
40             throw new Exception("Inconsistent packages view");
41     }
42 }
43 
44 class TestClassLoader extends ClassLoader {
TestClassLoader()45     public TestClassLoader() {
46         super();
47     }
48 
TestClassLoader(ClassLoader parent)49     public TestClassLoader(ClassLoader parent) {
50         super(parent);
51     }
52 
defineEmptyPackage(String name)53     public Package defineEmptyPackage(String name) {
54         return definePackage(name, null, null, null, null, null, null, null);
55     }
56 
57     /* test to see if getPackage() and getPackages()
58      * are consistent.
59      */
testPackageView(String name)60     public boolean testPackageView(String name) {
61         Package[] pkgs = getPackages();
62         Package pkg = getPackage(name);
63         for(int i = 0; i < pkgs.length; i++)
64             if (pkgs[i].getName().equals(name) && pkgs[i] == pkg)
65                 return true;
66         return false;
67     }
68 }
69