/*

 * 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * This file is available under and governed by the GNU General Public

 * License version 2 only, as published by the Free Software Foundation.

 * However, the following notice accompanied the original version of this

 * file:

 *

 * Written by Doug Lea with assistance from members of JCP JSR-166

 * Expert Group and released to the public domain, as explained at

 * http://creativecommons.org/publicdomain/zero/1.0/

 */

import java.util.concurrent.atomic.AtomicReferenceArray;

import junit.framework.Test;

import junit.framework.TestSuite;

public class AtomicReferenceArray9Test extends JSR166TestCase {

    public static void main(String[] args) {

        main(suite(), args);

    }

    public static Test suite() {

        return new TestSuite(AtomicReferenceArray9Test.class);

    }

    /**

     * get and set for out of bound indices throw IndexOutOfBoundsException

     */

    public void testIndexing() {

        AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);

        for (int index : new int[] { -1, SIZE }) {

            final int j = index;

            final Runnable[] tasks = {

                () -> aa.getPlain(j),

                () -> aa.getOpaque(j),

                () -> aa.getAcquire(j),

                () -> aa.setPlain(j, null),

                () -> aa.setOpaque(j, null),

                () -> aa.setRelease(j, null),

                () -> aa.compareAndExchange(j, null, null),

                () -> aa.compareAndExchangeAcquire(j, null, null),

                () -> aa.compareAndExchangeRelease(j, null, null),

                () -> aa.weakCompareAndSetVolatile(j, null, null),

                () -> aa.weakCompareAndSetAcquire(j, null, null),

                () -> aa.weakCompareAndSetRelease(j, null, null),

            };

            assertThrows(IndexOutOfBoundsException.class, tasks);

        }

    }

    /**

     * getPlain returns the last value set

     */

    public void testGetPlainSet() {

        AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);

        for (int i = 0; i < SIZE; i++) {

            aa.set(i, one);

            assertEquals(one, aa.getPlain(i));

            aa.set(i, two);

            assertEquals(two, aa.getPlain(i));

            aa.set(i, m3);

            assertEquals(m3, aa.getPlain(i));

        }

    }

    /**

     * getOpaque returns the last value set

     */

    public void testGetOpaqueSet() {

        AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);

        for (int i = 0; i < SIZE; i++) {

            aa.set(i, one);

            assertEquals(one, aa.getOpaque(i));

            aa.set(i, two);

            assertEquals(two, aa.getOpaque(i));

            aa.set(i, m3);

            assertEquals(m3, aa.getOpaque(i));

        }

    }

    /**

     * getAcquire returns the last value set

     */

    public void testGetAcquireSet() {

        AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);

        for (int i = 0; i < SIZE; i++) {

            aa.set(i, one);

            assertEquals(one, aa.getAcquire(i));

            aa.set(i, two);

            assertEquals(two, aa.getAcquire(i));

            aa.set(i, m3);

            assertEquals(m3, aa.getAcquire(i));

        }

    }

    /**

     * get returns the last value setPlain

     */

    public void testGetSetPlain() {

        AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);

        for (int i = 0; i < SIZE; i++) {

            aa.setPlain(i, one);

            assertEquals(one, aa.get(i));

            aa.setPlain(i, two);

            assertEquals(two, aa.get(i));

            aa.setPlain(i, m3);

            assertEquals(m3, aa.get(i));

        }

    }

    /**

     * get returns the last value setOpaque

     */

    public void testGetSetOpaque() {

        AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);

        for (int i = 0; i < SIZE; i++) {

            aa.setOpaque(i, one);

            assertEquals(one, aa.get(i));

            aa.setOpaque(i, two);

            assertEquals(two, aa.get(i));

            aa.setOpaque(i, m3);

            assertEquals(m3, aa.get(i));

        }

    }

    /**

     * get returns the last value setRelease

     */

    public void testGetSetRelease() {

        AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);

        for (int i = 0; i < SIZE; i++) {

            aa.setRelease(i, one);

            assertEquals(one, aa.get(i));

            aa.setRelease(i, two);

            assertEquals(two, aa.get(i));

            aa.setRelease(i, m3);

            assertEquals(m3, aa.get(i));

        }

    }

    /**

     * compareAndExchange succeeds in changing value if equal to

     * expected else fails

     */

    public void testCompareAndExchange() {

        AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);

        for (int i = 0; i < SIZE; i++) {

            aa.set(i, one);

            assertEquals(one, aa.compareAndExchange(i, one, two));

            assertEquals(two, aa.compareAndExchange(i, two, m4));

            assertEquals(m4, aa.get(i));

            assertEquals(m4, aa.compareAndExchange(i,m5, seven));

            assertEquals(m4, aa.get(i));

            assertEquals(m4, aa.compareAndExchange(i, m4, seven));

            assertEquals(seven, aa.get(i));

        }

    }

    /**

     * compareAndExchangeAcquire succeeds in changing value if equal to

     * expected else fails

     */

    public void testCompareAndExchangeAcquire() {

        AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);

        for (int i = 0; i < SIZE; i++) {

            aa.set(i, one);

            assertEquals(one, aa.compareAndExchangeAcquire(i, one, two));

            assertEquals(two, aa.compareAndExchangeAcquire(i, two, m4));

            assertEquals(m4, aa.get(i));

            assertEquals(m4, aa.compareAndExchangeAcquire(i,m5, seven));

            assertEquals(m4, aa.get(i));

            assertEquals(m4, aa.compareAndExchangeAcquire(i, m4, seven));

            assertEquals(seven, aa.get(i));

        }

    }

    /**

     * compareAndExchangeRelease succeeds in changing value if equal to

     * expected else fails

     */

    public void testCompareAndExchangeRelease() {

        AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);

        for (int i = 0; i < SIZE; i++) {

            aa.set(i, one);

            assertEquals(one, aa.compareAndExchangeRelease(i, one, two));

            assertEquals(two, aa.compareAndExchangeRelease(i, two, m4));

            assertEquals(m4, aa.get(i));

            assertEquals(m4, aa.compareAndExchangeRelease(i,m5, seven));

            assertEquals(m4, aa.get(i));

            assertEquals(m4, aa.compareAndExchangeRelease(i, m4, seven));

            assertEquals(seven, aa.get(i));

        }

    }

    /**

     * repeated weakCompareAndSetVolatile succeeds in changing value when equal

     * to expected

     */

    public void testWeakCompareAndSetVolatile() {

        AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);

        for (int i = 0; i < SIZE; i++) {

            aa.set(i, one);

            do {} while (!aa.weakCompareAndSetVolatile(i, one, two));

            do {} while (!aa.weakCompareAndSetVolatile(i, two, m4));

            assertEquals(m4, aa.get(i));

            do {} while (!aa.weakCompareAndSetVolatile(i, m4, seven));

            assertEquals(seven, aa.get(i));

        }

    }

    /**

     * repeated weakCompareAndSetAcquire succeeds in changing value when equal

     * to expected

     */

    public void testWeakCompareAndSetAcquire() {

        AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);

        for (int i = 0; i < SIZE; i++) {

            aa.set(i, one);

            do {} while (!aa.weakCompareAndSetAcquire(i, one, two));

            do {} while (!aa.weakCompareAndSetAcquire(i, two, m4));

            assertEquals(m4, aa.get(i));

            do {} while (!aa.weakCompareAndSetAcquire(i, m4, seven));

            assertEquals(seven, aa.get(i));

        }

    }

    /**

     * repeated weakCompareAndSetRelease succeeds in changing value when equal

     * to expected

     */

    public void testWeakCompareAndSetRelease() {

        AtomicReferenceArray<Integer> aa = new AtomicReferenceArray<>(SIZE);

        for (int i = 0; i < SIZE; i++) {

            aa.set(i, one);

            do {} while (!aa.weakCompareAndSetRelease(i, one, two));

            do {} while (!aa.weakCompareAndSetRelease(i, two, m4));

            assertEquals(m4, aa.get(i));

            do {} while (!aa.weakCompareAndSetRelease(i, m4, seven));

            assertEquals(seven, aa.get(i));

        }

    }

}