--- jsr166/src/test/tck/AtomicReferenceArrayTest.java 2009/11/16 05:30:07 1.13 +++ jsr166/src/test/tck/AtomicReferenceArrayTest.java 2011/06/10 20:01:21 1.24 @@ -1,19 +1,18 @@ /* * 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/licenses/publicdomain + * http://creativecommons.org/publicdomain/zero/1.0/ * Other contributors include Andrew Wright, Jeffrey Hayes, * Pat Fisher, Mike Judd. */ import junit.framework.*; -import java.util.concurrent.atomic.*; -import java.io.*; -import java.util.*; +import java.util.Arrays; +import java.util.concurrent.atomic.AtomicReferenceArray; public class AtomicReferenceArrayTest extends JSR166TestCase { - public static void main (String[] args) { - junit.textui.TestRunner.run (suite()); + public static void main(String[] args) { + junit.textui.TestRunner.run(suite()); } public static Test suite() { return new TestSuite(AtomicReferenceArrayTest.class); @@ -36,23 +35,35 @@ public class AtomicReferenceArrayTest ex try { Integer[] a = null; AtomicReferenceArray ai = new AtomicReferenceArray(a); - } catch (NullPointerException success) { - } catch (Exception ex) { - unexpectedException(); - } + shouldThrow(); + } catch (NullPointerException success) {} } /** * constructor with array is of same size and has all elements */ public void testConstructor2() { - Integer[] a = { two, one, three, four, seven}; + Integer[] a = { two, one, three, four, seven }; AtomicReferenceArray ai = new AtomicReferenceArray(a); assertEquals(a.length, ai.length()); for (int i = 0; i < a.length; ++i) assertEquals(a[i], ai.get(i)); } + /** + * Initialize AtomicReference with SubClass[] + */ + public void testConstructorSubClassArray() { + Integer[] a = { two, one, three, four, seven }; + AtomicReferenceArray aa = new AtomicReferenceArray(a); + assertEquals(a.length, aa.length()); + for (int i = 0; i < a.length; ++i) { + assertSame(a[i], aa.get(i)); + Long x = Long.valueOf(i); + aa.set(i, x); + assertSame(x, aa.get(i)); + } + } /** * get and set for out of bound indices throw IndexOutOfBoundsException @@ -61,18 +72,22 @@ public class AtomicReferenceArrayTest ex AtomicReferenceArray ai = new AtomicReferenceArray(SIZE); try { ai.get(SIZE); + shouldThrow(); } catch (IndexOutOfBoundsException success) { } try { ai.get(-1); + shouldThrow(); } catch (IndexOutOfBoundsException success) { } try { ai.set(SIZE, null); + shouldThrow(); } catch (IndexOutOfBoundsException success) { } try { ai.set(-1, null); + shouldThrow(); } catch (IndexOutOfBoundsException success) { } } @@ -84,11 +99,11 @@ public class AtomicReferenceArrayTest ex AtomicReferenceArray ai = new AtomicReferenceArray(SIZE); for (int i = 0; i < SIZE; ++i) { ai.set(i, one); - assertEquals(one,ai.get(i)); + assertSame(one, ai.get(i)); ai.set(i, two); - assertEquals(two,ai.get(i)); + assertSame(two, ai.get(i)); ai.set(i, m3); - assertEquals(m3,ai.get(i)); + assertSame(m3, ai.get(i)); } } @@ -99,11 +114,11 @@ public class AtomicReferenceArrayTest ex AtomicReferenceArray ai = new AtomicReferenceArray(SIZE); for (int i = 0; i < SIZE; ++i) { ai.lazySet(i, one); - assertEquals(one,ai.get(i)); + assertSame(one, ai.get(i)); ai.lazySet(i, two); - assertEquals(two,ai.get(i)); + assertSame(two, ai.get(i)); ai.lazySet(i, m3); - assertEquals(m3,ai.get(i)); + assertSame(m3, ai.get(i)); } } @@ -114,13 +129,13 @@ public class AtomicReferenceArrayTest ex AtomicReferenceArray ai = new AtomicReferenceArray(SIZE); for (int i = 0; i < SIZE; ++i) { ai.set(i, one); - assertTrue(ai.compareAndSet(i, one,two)); - assertTrue(ai.compareAndSet(i, two,m4)); - assertEquals(m4,ai.get(i)); - assertFalse(ai.compareAndSet(i, m5,seven)); - assertFalse((seven.equals(ai.get(i)))); - assertTrue(ai.compareAndSet(i, m4,seven)); - assertEquals(seven,ai.get(i)); + assertTrue(ai.compareAndSet(i, one, two)); + assertTrue(ai.compareAndSet(i, two, m4)); + assertSame(m4, ai.get(i)); + assertFalse(ai.compareAndSet(i, m5, seven)); + assertSame(m4, ai.get(i)); + assertTrue(ai.compareAndSet(i, m4, seven)); + assertSame(seven, ai.get(i)); } } @@ -128,23 +143,20 @@ public class AtomicReferenceArrayTest ex * compareAndSet in one thread enables another waiting for value * to succeed */ - public void testCompareAndSetInMultipleThreads() { + public void testCompareAndSetInMultipleThreads() throws InterruptedException { final AtomicReferenceArray a = new AtomicReferenceArray(1); a.set(0, one); - Thread t = new Thread(new Runnable() { - public void run() { - while (!a.compareAndSet(0, two, three)) Thread.yield(); - }}); - try { - t.start(); - assertTrue(a.compareAndSet(0, one, two)); - t.join(LONG_DELAY_MS); - assertFalse(t.isAlive()); - assertEquals(a.get(0), three); - } - catch (Exception e) { - unexpectedException(); - } + Thread t = new Thread(new CheckedRunnable() { + public void realRun() { + while (!a.compareAndSet(0, two, three)) + Thread.yield(); + }}); + + t.start(); + assertTrue(a.compareAndSet(0, one, two)); + t.join(LONG_DELAY_MS); + assertFalse(t.isAlive()); + assertSame(a.get(0), three); } /** @@ -155,11 +167,11 @@ public class AtomicReferenceArrayTest ex AtomicReferenceArray ai = new AtomicReferenceArray(SIZE); for (int i = 0; i < SIZE; ++i) { ai.set(i, one); - while (!ai.weakCompareAndSet(i, one,two)); - while (!ai.weakCompareAndSet(i, two,m4)); - assertEquals(m4,ai.get(i)); - while (!ai.weakCompareAndSet(i, m4,seven)); - assertEquals(seven,ai.get(i)); + while (!ai.weakCompareAndSet(i, one, two)); + while (!ai.weakCompareAndSet(i, two, m4)); + assertSame(m4, ai.get(i)); + while (!ai.weakCompareAndSet(i, m4, seven)); + assertSame(seven, ai.get(i)); } } @@ -170,45 +182,33 @@ public class AtomicReferenceArrayTest ex AtomicReferenceArray ai = new AtomicReferenceArray(SIZE); for (int i = 0; i < SIZE; ++i) { ai.set(i, one); - assertEquals(one,ai.getAndSet(i,zero)); - assertEquals(0,ai.getAndSet(i,m10)); - assertEquals(m10,ai.getAndSet(i,one)); + assertSame(one, ai.getAndSet(i, zero)); + assertSame(zero, ai.getAndSet(i, m10)); + assertSame(m10, ai.getAndSet(i, one)); } } /** * a deserialized serialized array holds same values */ - public void testSerialization() { - AtomicReferenceArray l = new AtomicReferenceArray(SIZE); - for (int i = 0; i < SIZE; ++i) { - l.set(i, new Integer(-i)); - } - - try { - ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); - ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); - out.writeObject(l); - out.close(); - - ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); - ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); - AtomicReferenceArray r = (AtomicReferenceArray) in.readObject(); - assertEquals(l.length(), r.length()); - for (int i = 0; i < SIZE; ++i) { - assertEquals(r.get(i), l.get(i)); - } - } catch (Exception e) { - unexpectedException(); + public void testSerialization() throws Exception { + AtomicReferenceArray x = new AtomicReferenceArray(SIZE); + for (int i = 0; i < SIZE; i++) { + x.set(i, new Integer(-i)); + } + AtomicReferenceArray y = serialClone(x); + assertTrue(x != y); + assertEquals(x.length(), y.length()); + for (int i = 0; i < SIZE; i++) { + assertEquals(x.get(i), y.get(i)); } } - /** * toString returns current value. */ public void testToString() { - Integer[] a = { two, one, three, four, seven}; + Integer[] a = { two, one, three, four, seven }; AtomicReferenceArray ai = new AtomicReferenceArray(a); assertEquals(Arrays.toString(a), ai.toString()); }