1 /*
2  * Copyright (c) 2003, 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
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22  */
23 
24 /*
25  * @test
26  * @bug     4329937
27  * @summary Basic test for making Boolean implement Comparable
28  * @author  Josh Bloch
29  * @key randomness
30  */
31 package test.java.lang.Boolean;
32 
33 import java.util.*;
34 
35 import org.testng.Assert;
36 import org.testng.annotations.Test;
37 
38 public class MakeBooleanComparable {
39 
40     @Test
testComparable()41     public void testComparable() {
42         Random rnd = new Random();
43         List<Boolean> list = new ArrayList<>();
44         int numFalse = 0;
45         for (int i = 0; i < 1000; i++) {
46             boolean element = rnd.nextBoolean();
47             if (!element) {
48                 numFalse++;
49             }
50             list.add(element); // Autoboxing!
51         }
52 
53         Collections.sort(list);
54 
55         for (int i = 0; i < numFalse; i++) {
56             Assert.assertFalse(list.get(i).booleanValue()); // Autounboxing doesn't work yet!
57         }
58         for (int i = numFalse; i < 1000; i++) {
59             Assert.assertTrue(list.get(i).booleanValue()); // Autounboxing doesn't work yet!
60         }
61     }
62 }
63