/*

 * Copyright (c) 2007, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 * questions.

 */

/*

 * @test

 * @bug 5004188

 * @summary Tests how often method equals() is called

 * @author Sergey Malenkov

 */

import java.beans.PropertyChangeEvent;

import java.beans.PropertyVetoException;

import java.beans.VetoableChangeListener;

import java.beans.VetoableChangeSupport;

public final class TestEquals implements VetoableChangeListener {

    private static final String PROPERTY = "property";

    public static void main(String[] args) throws PropertyVetoException {

        TestEquals one = new TestEquals(1);

        TestEquals two = new TestEquals(2);

        Object source = TestEquals.class;

        VetoableChangeSupport vcs = new VetoableChangeSupport(source);

        vcs.addVetoableChangeListener(PROPERTY, one);

        vcs.addVetoableChangeListener(PROPERTY, two);

        PropertyChangeEvent event = new PropertyChangeEvent(source, PROPERTY, one, two);

        vcs.fireVetoableChange(event);

        test(one, two, 1); // only one check

        vcs.fireVetoableChange(PROPERTY, one, two);

        test(one, two, 2); // because it invokes fireVetoableChange(PropertyChangeEvent)

    }

    private static void test(TestEquals v1, TestEquals v2, int amount) {

        int count = v1.count + v2.count;

        if (amount < count)

            throw new Error("method equals() is called " + count + " times");

        v1.count = 0;

        v2.count = 0;

    }

    private final int value;

    private int count;

    private TestEquals(int value) {

        this.value = value;

    }

    @Override

    public boolean equals(Object object) {

        if (object instanceof TestEquals) {

            this.count++;

            TestEquals that = (TestEquals)object;

            return that.value == this.value;

        }

        return false;

    }

    public void vetoableChange(PropertyChangeEvent event) {

    }

}