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