83 lines
3.5 KiB
Java
83 lines
3.5 KiB
Java
/*
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* Copyright (c) 2007, 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 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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}
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