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jsr166 |
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/* |
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* Copyright 2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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* CA 95054 USA or visit www.sun.com if you need additional information or |
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* have any questions. |
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*/ |
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/* |
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* @test |
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* @bug 6585904 |
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* @summary Checked collections with underlying maps with identity comparisons |
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*/ |
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import java.util.*; |
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import static java.util.Collections.*; |
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public class CheckedIdentityMap { |
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void test(String[] args) throws Throwable { |
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Map<Integer, Integer> m1 = checkedMap( |
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new IdentityHashMap<Integer, Integer>(), |
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Integer.class, Integer.class); |
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Map<Integer, Integer> m2 = checkedMap( |
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new IdentityHashMap<Integer, Integer>(), |
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Integer.class, Integer.class); |
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m1.put(new Integer(1), new Integer(1)); |
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m2.put(new Integer(1), new Integer(1)); |
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Map.Entry<Integer, Integer> e1 = m1.entrySet().iterator().next(); |
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Map.Entry<Integer, Integer> e2 = m2.entrySet().iterator().next(); |
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check(! e1.equals(e2)); |
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check(e1.hashCode() == hashCode(e1)); |
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check(e2.hashCode() == hashCode(e2)); |
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} |
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int hashCode(Map.Entry<?,?> e) { |
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return (System.identityHashCode(e.getKey()) ^ |
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System.identityHashCode(e.getValue())); |
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} |
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//--------------------- Infrastructure --------------------------- |
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volatile int passed = 0, failed = 0; |
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void pass() {passed++;} |
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void fail() {failed++; Thread.dumpStack();} |
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void fail(String msg) {System.err.println(msg); fail();} |
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void unexpected(Throwable t) {failed++; t.printStackTrace();} |
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void check(boolean cond) {if (cond) pass(); else fail();} |
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void equal(Object x, Object y) { |
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if (x == null ? y == null : x.equals(y)) pass(); |
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else fail(x + " not equal to " + y);} |
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public static void main(String[] args) throws Throwable { |
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new CheckedIdentityMap().instanceMain(args);} |
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void instanceMain(String[] args) throws Throwable { |
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try {test(args);} catch (Throwable t) {unexpected(t);} |
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System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed); |
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if (failed > 0) throw new AssertionError("Some tests failed");} |
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abstract class F {abstract void f() throws Throwable;} |
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void THROWS(Class<? extends Throwable> k, F... fs) { |
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for (F f : fs) |
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try {f.f(); fail("Expected " + k.getName() + " not thrown");} |
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catch (Throwable t) { |
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if (k.isAssignableFrom(t.getClass())) pass(); |
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else unexpected(t);}} |
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Thread checkedThread(final Runnable r) { |
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return new Thread() {public void run() { |
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try {r.run();} catch (Throwable t) {unexpected(t);}}};} |
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} |
