--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/util/concurrent/tck/AtomicIntegerTest.java Fri Jan 29 11:44:19 2016 -0800
@@ -0,0 +1,294 @@
+/*
+ * 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/
+ * Other contributors include Andrew Wright, Jeffrey Hayes,
+ * Pat Fisher, Mike Judd.
+ */
+
+import java.util.concurrent.atomic.AtomicInteger;
+
+import junit.framework.Test;
+import junit.framework.TestSuite;
+
+public class AtomicIntegerTest extends JSR166TestCase {
+ public static void main(String[] args) {
+ main(suite(), args);
+ }
+ public static Test suite() {
+ return new TestSuite(AtomicIntegerTest.class);
+ }
+
+ final int[] VALUES = {
+ Integer.MIN_VALUE, -1, 0, 1, 42, Integer.MAX_VALUE,
+ };
+
+ /**
+ * constructor initializes to given value
+ */
+ public void testConstructor() {
+ AtomicInteger ai = new AtomicInteger(1);
+ assertEquals(1, ai.get());
+ }
+
+ /**
+ * default constructed initializes to zero
+ */
+ public void testConstructor2() {
+ AtomicInteger ai = new AtomicInteger();
+ assertEquals(0, ai.get());
+ }
+
+ /**
+ * get returns the last value set
+ */
+ public void testGetSet() {
+ AtomicInteger ai = new AtomicInteger(1);
+ assertEquals(1, ai.get());
+ ai.set(2);
+ assertEquals(2, ai.get());
+ ai.set(-3);
+ assertEquals(-3, ai.get());
+ }
+
+ /**
+ * get returns the last value lazySet in same thread
+ */
+ public void testGetLazySet() {
+ AtomicInteger ai = new AtomicInteger(1);
+ assertEquals(1, ai.get());
+ ai.lazySet(2);
+ assertEquals(2, ai.get());
+ ai.lazySet(-3);
+ assertEquals(-3, ai.get());
+ }
+
+ /**
+ * compareAndSet succeeds in changing value if equal to expected else fails
+ */
+ public void testCompareAndSet() {
+ AtomicInteger ai = new AtomicInteger(1);
+ assertTrue(ai.compareAndSet(1, 2));
+ assertTrue(ai.compareAndSet(2, -4));
+ assertEquals(-4, ai.get());
+ assertFalse(ai.compareAndSet(-5, 7));
+ assertEquals(-4, ai.get());
+ assertTrue(ai.compareAndSet(-4, 7));
+ assertEquals(7, ai.get());
+ }
+
+ /**
+ * compareAndSet in one thread enables another waiting for value
+ * to succeed
+ */
+ public void testCompareAndSetInMultipleThreads() throws Exception {
+ final AtomicInteger ai = new AtomicInteger(1);
+ Thread t = new Thread(new CheckedRunnable() {
+ public void realRun() {
+ while (!ai.compareAndSet(2, 3))
+ Thread.yield();
+ }});
+
+ t.start();
+ assertTrue(ai.compareAndSet(1, 2));
+ t.join(LONG_DELAY_MS);
+ assertFalse(t.isAlive());
+ assertEquals(3, ai.get());
+ }
+
+ /**
+ * repeated weakCompareAndSet succeeds in changing value when equal
+ * to expected
+ */
+ public void testWeakCompareAndSet() {
+ AtomicInteger ai = new AtomicInteger(1);
+ do {} while (!ai.weakCompareAndSet(1, 2));
+ do {} while (!ai.weakCompareAndSet(2, -4));
+ assertEquals(-4, ai.get());
+ do {} while (!ai.weakCompareAndSet(-4, 7));
+ assertEquals(7, ai.get());
+ }
+
+ /**
+ * getAndSet returns previous value and sets to given value
+ */
+ public void testGetAndSet() {
+ AtomicInteger ai = new AtomicInteger(1);
+ assertEquals(1, ai.getAndSet(0));
+ assertEquals(0, ai.getAndSet(-10));
+ assertEquals(-10, ai.getAndSet(1));
+ }
+
+ /**
+ * getAndAdd returns previous value and adds given value
+ */
+ public void testGetAndAdd() {
+ AtomicInteger ai = new AtomicInteger(1);
+ assertEquals(1, ai.getAndAdd(2));
+ assertEquals(3, ai.get());
+ assertEquals(3, ai.getAndAdd(-4));
+ assertEquals(-1, ai.get());
+ }
+
+ /**
+ * getAndDecrement returns previous value and decrements
+ */
+ public void testGetAndDecrement() {
+ AtomicInteger ai = new AtomicInteger(1);
+ assertEquals(1, ai.getAndDecrement());
+ assertEquals(0, ai.getAndDecrement());
+ assertEquals(-1, ai.getAndDecrement());
+ }
+
+ /**
+ * getAndIncrement returns previous value and increments
+ */
+ public void testGetAndIncrement() {
+ AtomicInteger ai = new AtomicInteger(1);
+ assertEquals(1, ai.getAndIncrement());
+ assertEquals(2, ai.get());
+ ai.set(-2);
+ assertEquals(-2, ai.getAndIncrement());
+ assertEquals(-1, ai.getAndIncrement());
+ assertEquals(0, ai.getAndIncrement());
+ assertEquals(1, ai.get());
+ }
+
+ /**
+ * addAndGet adds given value to current, and returns current value
+ */
+ public void testAddAndGet() {
+ AtomicInteger ai = new AtomicInteger(1);
+ assertEquals(3, ai.addAndGet(2));
+ assertEquals(3, ai.get());
+ assertEquals(-1, ai.addAndGet(-4));
+ assertEquals(-1, ai.get());
+ }
+
+ /**
+ * decrementAndGet decrements and returns current value
+ */
+ public void testDecrementAndGet() {
+ AtomicInteger ai = new AtomicInteger(1);
+ assertEquals(0, ai.decrementAndGet());
+ assertEquals(-1, ai.decrementAndGet());
+ assertEquals(-2, ai.decrementAndGet());
+ assertEquals(-2, ai.get());
+ }
+
+ /**
+ * incrementAndGet increments and returns current value
+ */
+ public void testIncrementAndGet() {
+ AtomicInteger ai = new AtomicInteger(1);
+ assertEquals(2, ai.incrementAndGet());
+ assertEquals(2, ai.get());
+ ai.set(-2);
+ assertEquals(-1, ai.incrementAndGet());
+ assertEquals(0, ai.incrementAndGet());
+ assertEquals(1, ai.incrementAndGet());
+ assertEquals(1, ai.get());
+ }
+
+ /**
+ * a deserialized serialized atomic holds same value
+ */
+ public void testSerialization() throws Exception {
+ AtomicInteger x = new AtomicInteger();
+ AtomicInteger y = serialClone(x);
+ assertNotSame(x, y);
+ x.set(22);
+ AtomicInteger z = serialClone(x);
+ assertEquals(22, x.get());
+ assertEquals(0, y.get());
+ assertEquals(22, z.get());
+ }
+
+ /**
+ * toString returns current value.
+ */
+ public void testToString() {
+ AtomicInteger ai = new AtomicInteger();
+ assertEquals("0", ai.toString());
+ for (int x : VALUES) {
+ ai.set(x);
+ assertEquals(Integer.toString(x), ai.toString());
+ }
+ }
+
+ /**
+ * intValue returns current value.
+ */
+ public void testIntValue() {
+ AtomicInteger ai = new AtomicInteger();
+ assertEquals(0, ai.intValue());
+ for (int x : VALUES) {
+ ai.set(x);
+ assertEquals(x, ai.intValue());
+ }
+ }
+
+ /**
+ * longValue returns current value.
+ */
+ public void testLongValue() {
+ AtomicInteger ai = new AtomicInteger();
+ assertEquals(0L, ai.longValue());
+ for (int x : VALUES) {
+ ai.set(x);
+ assertEquals((long)x, ai.longValue());
+ }
+ }
+
+ /**
+ * floatValue returns current value.
+ */
+ public void testFloatValue() {
+ AtomicInteger ai = new AtomicInteger();
+ assertEquals(0.0f, ai.floatValue());
+ for (int x : VALUES) {
+ ai.set(x);
+ assertEquals((float)x, ai.floatValue());
+ }
+ }
+
+ /**
+ * doubleValue returns current value.
+ */
+ public void testDoubleValue() {
+ AtomicInteger ai = new AtomicInteger();
+ assertEquals(0.0d, ai.doubleValue());
+ for (int x : VALUES) {
+ ai.set(x);
+ assertEquals((double)x, ai.doubleValue());
+ }
+ }
+
+}