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/* |
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* Written by members of JCP JSR-166 Expert Group and released to the |
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* public domain. Use, modify, and redistribute this code in any way |
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* without acknowledgement. Other contributors include Andrew Wright, |
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* Jeffrey Hayes, Pat Fischer, Mike Judd. |
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*/ |
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|
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import junit.framework.*; |
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import java.util.concurrent.atomic.*; |
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import java.io.*; |
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|
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public class AtomicIntegerArrayTest extends TestCase |
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{ |
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static final int N = 10; |
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|
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public static void main (String[] args) { |
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junit.textui.TestRunner.run (suite()); |
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} |
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public static Test suite() { |
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return new TestSuite(AtomicIntegerArrayTest.class); |
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} |
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|
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public void testConstructor(){ |
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AtomicIntegerArray ai = new AtomicIntegerArray(N); |
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for (int i = 0; i < N; ++i) |
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assertEquals(0,ai.get(i)); |
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} |
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|
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public void testGetSet(){ |
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AtomicIntegerArray ai = new AtomicIntegerArray(N); |
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for (int i = 0; i < N; ++i) { |
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ai.set(i, 1); |
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assertEquals(1,ai.get(i)); |
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ai.set(i, 2); |
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assertEquals(2,ai.get(i)); |
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ai.set(i, -3); |
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assertEquals(-3,ai.get(i)); |
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} |
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} |
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|
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public void testCompareAndSet(){ |
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AtomicIntegerArray ai = new AtomicIntegerArray(N); |
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for (int i = 0; i < N; ++i) { |
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ai.set(i, 1); |
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assertTrue(ai.compareAndSet(i, 1,2)); |
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assertTrue(ai.compareAndSet(i, 2,-4)); |
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assertEquals(-4,ai.get(i)); |
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assertFalse(ai.compareAndSet(i, -5,7)); |
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assertFalse((7 == ai.get(i))); |
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assertTrue(ai.compareAndSet(i, -4,7)); |
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assertEquals(7,ai.get(i)); |
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} |
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} |
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|
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public void testWeakCompareAndSet(){ |
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AtomicIntegerArray ai = new AtomicIntegerArray(N); |
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for (int i = 0; i < N; ++i) { |
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ai.set(i, 1); |
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while(!ai.weakCompareAndSet(i, 1,2)); |
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while(!ai.weakCompareAndSet(i, 2,-4)); |
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assertEquals(-4,ai.get(i)); |
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while(!ai.weakCompareAndSet(i, -4,7)); |
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assertEquals(7,ai.get(i)); |
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} |
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} |
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|
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public void testGetAndSet(){ |
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AtomicIntegerArray ai = new AtomicIntegerArray(N); |
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for (int i = 0; i < N; ++i) { |
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ai.set(i, 1); |
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assertEquals(1,ai.getAndSet(i,0)); |
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assertEquals(0,ai.getAndSet(i,-10)); |
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assertEquals(-10,ai.getAndSet(i,1)); |
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} |
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} |
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|
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public void testGetAndAdd(){ |
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AtomicIntegerArray ai = new AtomicIntegerArray(N); |
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for (int i = 0; i < N; ++i) { |
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ai.set(i, 1); |
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assertEquals(1,ai.getAndAdd(i,2)); |
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assertEquals(3,ai.get(i)); |
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assertEquals(3,ai.getAndAdd(i,-4)); |
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assertEquals(-1,ai.get(i)); |
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} |
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} |
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|
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public void testGetAndDecrement(){ |
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AtomicIntegerArray ai = new AtomicIntegerArray(N); |
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for (int i = 0; i < N; ++i) { |
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ai.set(i, 1); |
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assertEquals(1,ai.getAndDecrement(i)); |
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assertEquals(0,ai.getAndDecrement(i)); |
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assertEquals(-1,ai.getAndDecrement(i)); |
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} |
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} |
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|
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public void testGetAndIncrement(){ |
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AtomicIntegerArray ai = new AtomicIntegerArray(N); |
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for (int i = 0; i < N; ++i) { |
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ai.set(i, 1); |
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assertEquals(1,ai.getAndIncrement(i)); |
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assertEquals(2,ai.get(i)); |
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ai.set(i,-2); |
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assertEquals(-2,ai.getAndIncrement(i)); |
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assertEquals(-1,ai.getAndIncrement(i)); |
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assertEquals(0,ai.getAndIncrement(i)); |
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assertEquals(1,ai.get(i)); |
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} |
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} |
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|
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public void testAddAndGet() { |
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AtomicIntegerArray ai = new AtomicIntegerArray(N); |
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for (int i = 0; i < N; ++i) { |
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ai.set(i, 1); |
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assertEquals(3,ai.addAndGet(i,2)); |
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assertEquals(3,ai.get(i)); |
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assertEquals(-1,ai.addAndGet(i,-4)); |
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assertEquals(-1,ai.get(i)); |
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} |
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} |
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|
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public void testDecrementAndGet(){ |
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AtomicIntegerArray ai = new AtomicIntegerArray(N); |
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for (int i = 0; i < N; ++i) { |
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ai.set(i, 1); |
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assertEquals(0,ai.decrementAndGet(i)); |
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assertEquals(-1,ai.decrementAndGet(i)); |
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assertEquals(-2,ai.decrementAndGet(i)); |
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assertEquals(-2,ai.get(i)); |
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} |
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} |
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|
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public void testIncrementAndGet() { |
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AtomicIntegerArray ai = new AtomicIntegerArray(N); |
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for (int i = 0; i < N; ++i) { |
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ai.set(i, 1); |
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assertEquals(2,ai.incrementAndGet(i)); |
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assertEquals(2,ai.get(i)); |
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ai.set(i, -2); |
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assertEquals(-1,ai.incrementAndGet(i)); |
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assertEquals(0,ai.incrementAndGet(i)); |
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assertEquals(1,ai.incrementAndGet(i)); |
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assertEquals(1,ai.get(i)); |
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} |
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} |
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|
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public void testSerialization() { |
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AtomicIntegerArray l = new AtomicIntegerArray(N); |
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for (int i = 0; i < N; ++i) |
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l.set(i, -i); |
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|
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try { |
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ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
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ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
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out.writeObject(l); |
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out.close(); |
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|
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ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
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ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
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AtomicIntegerArray r = (AtomicIntegerArray) in.readObject(); |
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for (int i = 0; i < N; ++i) { |
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assertEquals(l.get(i), r.get(i)); |
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} |
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} catch(Exception e){ |
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e.printStackTrace(); |
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fail("unexpected exception"); |
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} |
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} |
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|
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} |
