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