| /* |
| * Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 4486049 |
| * @summary min and max methods fail if size changes in between a call to size |
| * and an attempt to iterate. |
| * @author Josh Bloch |
| */ |
| |
| import java.util.*; |
| |
| public class MinMax { |
| public static void main(String[] args) { |
| Set s = new LyingSet(); |
| s.add("x"); |
| if (!Collections.min(s).equals("x")) |
| throw new RuntimeException("1: " + Collections.min(s)); |
| if (!Collections.max(s).equals("x")) |
| throw new RuntimeException("2: " + Collections.max(s)); |
| |
| s.add("y"); |
| if (!Collections.min(s).equals("x")) |
| throw new RuntimeException("3: " + Collections.min(s)); |
| if (!Collections.max(s).equals("y")) |
| throw new RuntimeException("4: " + Collections.max(s)); |
| |
| s.add("w"); |
| if (!Collections.min(s).equals("w")) |
| throw new RuntimeException("5: " + Collections.min(s)); |
| if (!Collections.max(s).equals("y")) |
| throw new RuntimeException("6: " + Collections.max(s)); |
| |
| s.clear(); |
| s.add("x"); |
| if (!Collections.min(s, Collections.reverseOrder()).equals("x")) |
| throw new RuntimeException("1a: " + Collections.min(s)); |
| if (!Collections.max(s, Collections.reverseOrder()).equals("x")) |
| throw new RuntimeException("2a: " + Collections.max(s)); |
| |
| s.add("y"); |
| if (!Collections.min(s, Collections.reverseOrder()).equals("y")) |
| throw new RuntimeException("3a: " + Collections.min(s)); |
| if (!Collections.max(s, Collections.reverseOrder()).equals("x")) |
| throw new RuntimeException("4a: " + Collections.max(s)); |
| |
| s.add("w"); |
| if (!Collections.min(s, Collections.reverseOrder()).equals("y")) |
| throw new RuntimeException("5a: " + Collections.min(s)); |
| if (!Collections.max(s, Collections.reverseOrder()).equals("w")) |
| throw new RuntimeException("6a: " + Collections.max(s)); |
| } |
| } |
| |
| class LyingSet extends LinkedHashSet { |
| public int size() { |
| return super.size() + 1; // Lies, lies, all lies! |
| } |
| } |