/*

 * 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.

 *

 */

/*

 * @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);}}};}

}