--- jsr166/src/test/tck/AtomicReferenceTest.java 2011/06/10 20:17:11 1.20 +++ jsr166/src/test/tck/AtomicReferenceTest.java 2021/01/26 13:33:05 1.30 @@ -6,12 +6,14 @@ * Pat Fisher, Mike Judd. */ -import junit.framework.*; import java.util.concurrent.atomic.AtomicReference; +import junit.framework.Test; +import junit.framework.TestSuite; + public class AtomicReferenceTest extends JSR166TestCase { public static void main(String[] args) { - junit.textui.TestRunner.run(suite()); + main(suite(), args); } public static Test suite() { return new TestSuite(AtomicReferenceTest.class); @@ -21,7 +23,7 @@ public class AtomicReferenceTest extends * constructor initializes to given value */ public void testConstructor() { - AtomicReference ai = new AtomicReference(one); + AtomicReference ai = new AtomicReference(one); assertSame(one, ai.get()); } @@ -29,7 +31,7 @@ public class AtomicReferenceTest extends * default constructed initializes to null */ public void testConstructor2() { - AtomicReference ai = new AtomicReference(); + AtomicReference ai = new AtomicReference(); assertNull(ai.get()); } @@ -37,37 +39,37 @@ public class AtomicReferenceTest extends * get returns the last value set */ public void testGetSet() { - AtomicReference ai = new AtomicReference(one); + AtomicReference ai = new AtomicReference(one); assertSame(one, ai.get()); ai.set(two); assertSame(two, ai.get()); - ai.set(m3); - assertSame(m3, ai.get()); + ai.set(minusThree); + assertSame(minusThree, ai.get()); } /** * get returns the last value lazySet in same thread */ public void testGetLazySet() { - AtomicReference ai = new AtomicReference(one); + AtomicReference ai = new AtomicReference(one); assertSame(one, ai.get()); ai.lazySet(two); assertSame(two, ai.get()); - ai.lazySet(m3); - assertSame(m3, ai.get()); + ai.lazySet(minusThree); + assertSame(minusThree, ai.get()); } /** * compareAndSet succeeds in changing value if equal to expected else fails */ public void testCompareAndSet() { - AtomicReference ai = new AtomicReference(one); + AtomicReference ai = new AtomicReference(one); assertTrue(ai.compareAndSet(one, two)); - assertTrue(ai.compareAndSet(two, m4)); - assertSame(m4, ai.get()); - assertFalse(ai.compareAndSet(m5, seven)); - assertSame(m4, ai.get()); - assertTrue(ai.compareAndSet(m4, seven)); + assertTrue(ai.compareAndSet(two, minusFour)); + assertSame(minusFour, ai.get()); + assertFalse(ai.compareAndSet(minusFive, seven)); + assertSame(minusFour, ai.get()); + assertTrue(ai.compareAndSet(minusFour, seven)); assertSame(seven, ai.get()); } @@ -76,7 +78,7 @@ public class AtomicReferenceTest extends * to succeed */ public void testCompareAndSetInMultipleThreads() throws Exception { - final AtomicReference ai = new AtomicReference(one); + final AtomicReference ai = new AtomicReference(one); Thread t = new Thread(new CheckedRunnable() { public void realRun() { while (!ai.compareAndSet(two, three)) @@ -94,12 +96,13 @@ public class AtomicReferenceTest extends * repeated weakCompareAndSet succeeds in changing value when equal * to expected */ + @SuppressWarnings("deprecation") public void testWeakCompareAndSet() { - AtomicReference ai = new AtomicReference(one); - while (!ai.weakCompareAndSet(one, two)); - while (!ai.weakCompareAndSet(two, m4)); - assertSame(m4, ai.get()); - while (!ai.weakCompareAndSet(m4, seven)); + AtomicReference ai = new AtomicReference(one); + do {} while (!ai.weakCompareAndSet(one, two)); + do {} while (!ai.weakCompareAndSet(two, minusFour)); + assertSame(minusFour, ai.get()); + do {} while (!ai.weakCompareAndSet(minusFour, seven)); assertSame(seven, ai.get()); } @@ -107,23 +110,24 @@ public class AtomicReferenceTest extends * getAndSet returns previous value and sets to given value */ public void testGetAndSet() { - AtomicReference ai = new AtomicReference(one); + AtomicReference ai = new AtomicReference(one); assertSame(one, ai.getAndSet(zero)); - assertSame(zero, ai.getAndSet(m10)); - assertSame(m10, ai.getAndSet(one)); + assertSame(zero, ai.getAndSet(minusTen)); + assertSame(minusTen, ai.getAndSet(one)); } /** - * a deserialized serialized atomic holds same value + * a deserialized/reserialized atomic holds same value */ public void testSerialization() throws Exception { - AtomicReference x = new AtomicReference(); - AtomicReference y = serialClone(x); - assertTrue(x != y); + AtomicReference x = new AtomicReference(); + AtomicReference y = serialClone(x); + assertNotSame(x, y); x.set(one); - AtomicReference z = serialClone(x); + AtomicReference z = serialClone(x); + assertNotSame(y, z); assertEquals(one, x.get()); - assertEquals(null, y.get()); + assertNull(y.get()); assertEquals(one, z.get()); } @@ -131,7 +135,7 @@ public class AtomicReferenceTest extends * toString returns current value. */ public void testToString() { - AtomicReference ai = new AtomicReference(one); + AtomicReference ai = new AtomicReference(one); assertEquals(one.toString(), ai.toString()); ai.set(two); assertEquals(two.toString(), ai.toString());