| 1 |
/* |
| 2 |
* Copyright (c) 2001, 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 4486049 |
| 27 |
* @summary min and max methods fail if size changes in between a call to size |
| 28 |
* and an attempt to iterate. |
| 29 |
* @author Josh Bloch |
| 30 |
*/ |
| 31 |
|
| 32 |
import java.util.Collections; |
| 33 |
import java.util.LinkedHashSet; |
| 34 |
import java.util.Set; |
| 35 |
|
| 36 |
public class MinMax { |
| 37 |
public static void main(String[] args) { |
| 38 |
Set s = new LyingSet(); |
| 39 |
s.add("x"); |
| 40 |
if (!Collections.min(s).equals("x")) |
| 41 |
throw new RuntimeException("1: " + Collections.min(s)); |
| 42 |
if (!Collections.max(s).equals("x")) |
| 43 |
throw new RuntimeException("2: " + Collections.max(s)); |
| 44 |
|
| 45 |
s.add("y"); |
| 46 |
if (!Collections.min(s).equals("x")) |
| 47 |
throw new RuntimeException("3: " + Collections.min(s)); |
| 48 |
if (!Collections.max(s).equals("y")) |
| 49 |
throw new RuntimeException("4: " + Collections.max(s)); |
| 50 |
|
| 51 |
s.add("w"); |
| 52 |
if (!Collections.min(s).equals("w")) |
| 53 |
throw new RuntimeException("5: " + Collections.min(s)); |
| 54 |
if (!Collections.max(s).equals("y")) |
| 55 |
throw new RuntimeException("6: " + Collections.max(s)); |
| 56 |
|
| 57 |
s.clear(); |
| 58 |
s.add("x"); |
| 59 |
if (!Collections.min(s, Collections.reverseOrder()).equals("x")) |
| 60 |
throw new RuntimeException("1a: " + Collections.min(s)); |
| 61 |
if (!Collections.max(s, Collections.reverseOrder()).equals("x")) |
| 62 |
throw new RuntimeException("2a: " + Collections.max(s)); |
| 63 |
|
| 64 |
s.add("y"); |
| 65 |
if (!Collections.min(s, Collections.reverseOrder()).equals("y")) |
| 66 |
throw new RuntimeException("3a: " + Collections.min(s)); |
| 67 |
if (!Collections.max(s, Collections.reverseOrder()).equals("x")) |
| 68 |
throw new RuntimeException("4a: " + Collections.max(s)); |
| 69 |
|
| 70 |
s.add("w"); |
| 71 |
if (!Collections.min(s, Collections.reverseOrder()).equals("y")) |
| 72 |
throw new RuntimeException("5a: " + Collections.min(s)); |
| 73 |
if (!Collections.max(s, Collections.reverseOrder()).equals("w")) |
| 74 |
throw new RuntimeException("6a: " + Collections.max(s)); |
| 75 |
} |
| 76 |
} |
| 77 |
|
| 78 |
class LyingSet extends LinkedHashSet { |
| 79 |
public int size() { |
| 80 |
return super.size() + 1; // Lies, lies, all lies! |
| 81 |
} |
| 82 |
} |
