--- jsr166/src/test/tck/AtomicReferenceArrayTest.java 2011/05/27 19:39:07 1.20 +++ jsr166/src/test/tck/AtomicReferenceArrayTest.java 2015/02/22 04:34:44 1.31 @@ -6,10 +6,11 @@ * 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; + +import junit.framework.Test; +import junit.framework.TestSuite; public class AtomicReferenceArrayTest extends JSR166TestCase { public static void main(String[] args) { @@ -23,9 +24,9 @@ public class AtomicReferenceArrayTest ex * constructor creates array of given size with all elements null */ public void testConstructor() { - AtomicReferenceArray ai = new AtomicReferenceArray(SIZE); - for (int i = 0; i < SIZE; ++i) { - assertNull(ai.get(i)); + AtomicReferenceArray aa = new AtomicReferenceArray(SIZE); + for (int i = 0; i < SIZE; i++) { + assertNull(aa.get(i)); } } @@ -35,7 +36,7 @@ public class AtomicReferenceArrayTest ex public void testConstructor2NPE() { try { Integer[] a = null; - AtomicReferenceArray ai = new AtomicReferenceArray(a); + new AtomicReferenceArray(a); shouldThrow(); } catch (NullPointerException success) {} } @@ -44,37 +45,54 @@ public class AtomicReferenceArrayTest ex * constructor with array is of same size and has all elements */ public void testConstructor2() { - 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)); + 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++) + assertEquals(a[i], aa.get(i)); + } + + /** + * Initialize AtomicReferenceArray 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 */ public void testIndexing() { - 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) { + AtomicReferenceArray aa = new AtomicReferenceArray(SIZE); + for (int index : new int[] { -1, SIZE }) { + try { + aa.get(index); + shouldThrow(); + } catch (IndexOutOfBoundsException success) {} + try { + aa.set(index, null); + shouldThrow(); + } catch (IndexOutOfBoundsException success) {} + try { + aa.lazySet(index, null); + shouldThrow(); + } catch (IndexOutOfBoundsException success) {} + try { + aa.compareAndSet(index, null, null); + shouldThrow(); + } catch (IndexOutOfBoundsException success) {} + try { + aa.weakCompareAndSet(index, null, null); + shouldThrow(); + } catch (IndexOutOfBoundsException success) {} } } @@ -82,14 +100,14 @@ public class AtomicReferenceArrayTest ex * get returns the last value set at index */ public void testGetSet() { - AtomicReferenceArray ai = new AtomicReferenceArray(SIZE); - for (int i = 0; i < SIZE; ++i) { - ai.set(i, one); - assertSame(one,ai.get(i)); - ai.set(i, two); - assertSame(two,ai.get(i)); - ai.set(i, m3); - assertSame(m3,ai.get(i)); + AtomicReferenceArray aa = new AtomicReferenceArray(SIZE); + for (int i = 0; i < SIZE; i++) { + aa.set(i, one); + assertSame(one, aa.get(i)); + aa.set(i, two); + assertSame(two, aa.get(i)); + aa.set(i, m3); + assertSame(m3, aa.get(i)); } } @@ -97,14 +115,14 @@ public class AtomicReferenceArrayTest ex * get returns the last value lazySet at index by same thread */ public void testGetLazySet() { - AtomicReferenceArray ai = new AtomicReferenceArray(SIZE); - for (int i = 0; i < SIZE; ++i) { - ai.lazySet(i, one); - assertSame(one,ai.get(i)); - ai.lazySet(i, two); - assertSame(two,ai.get(i)); - ai.lazySet(i, m3); - assertSame(m3,ai.get(i)); + AtomicReferenceArray aa = new AtomicReferenceArray(SIZE); + for (int i = 0; i < SIZE; i++) { + aa.lazySet(i, one); + assertSame(one, aa.get(i)); + aa.lazySet(i, two); + assertSame(two, aa.get(i)); + aa.lazySet(i, m3); + assertSame(m3, aa.get(i)); } } @@ -112,16 +130,16 @@ public class AtomicReferenceArrayTest ex * compareAndSet succeeds in changing value if equal to expected else fails */ public void testCompareAndSet() { - 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)); - 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)); + AtomicReferenceArray aa = new AtomicReferenceArray(SIZE); + for (int i = 0; i < SIZE; i++) { + aa.set(i, one); + assertTrue(aa.compareAndSet(i, one, two)); + assertTrue(aa.compareAndSet(i, two, m4)); + assertSame(m4, aa.get(i)); + assertFalse(aa.compareAndSet(i, m5, seven)); + assertSame(m4, aa.get(i)); + assertTrue(aa.compareAndSet(i, m4, seven)); + assertSame(seven, aa.get(i)); } } @@ -142,7 +160,7 @@ public class AtomicReferenceArrayTest ex assertTrue(a.compareAndSet(0, one, two)); t.join(LONG_DELAY_MS); assertFalse(t.isAlive()); - assertSame(a.get(0), three); + assertSame(three, a.get(0)); } /** @@ -150,14 +168,14 @@ public class AtomicReferenceArrayTest ex * to expected */ public void testWeakCompareAndSet() { - 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)); - assertSame(m4,ai.get(i)); - while (!ai.weakCompareAndSet(i, m4,seven)); - assertSame(seven,ai.get(i)); + AtomicReferenceArray aa = new AtomicReferenceArray(SIZE); + for (int i = 0; i < SIZE; i++) { + aa.set(i, one); + do {} while (!aa.weakCompareAndSet(i, one, two)); + do {} while (!aa.weakCompareAndSet(i, two, m4)); + assertSame(m4, aa.get(i)); + do {} while (!aa.weakCompareAndSet(i, m4, seven)); + assertSame(seven, aa.get(i)); } } @@ -165,12 +183,12 @@ public class AtomicReferenceArrayTest ex * getAndSet returns previous value and sets to given value at given index */ public void testGetAndSet() { - AtomicReferenceArray ai = new AtomicReferenceArray(SIZE); - for (int i = 0; i < SIZE; ++i) { - ai.set(i, one); - assertSame(one,ai.getAndSet(i,zero)); - assertSame(zero,ai.getAndSet(i,m10)); - assertSame(m10,ai.getAndSet(i,one)); + AtomicReferenceArray aa = new AtomicReferenceArray(SIZE); + for (int i = 0; i < SIZE; i++) { + aa.set(i, one); + assertSame(one, aa.getAndSet(i, zero)); + assertSame(zero, aa.getAndSet(i, m10)); + assertSame(m10, aa.getAndSet(i, one)); } } @@ -178,22 +196,15 @@ public class AtomicReferenceArrayTest ex * a deserialized serialized array holds same values */ public void testSerialization() throws Exception { - AtomicReferenceArray l = new AtomicReferenceArray(SIZE); - for (int i = 0; i < SIZE; ++i) { - l.set(i, new Integer(-i)); - } - - 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)); + AtomicReferenceArray x = new AtomicReferenceArray(SIZE); + for (int i = 0; i < SIZE; i++) { + x.set(i, new Integer(-i)); + } + AtomicReferenceArray y = serialClone(x); + assertNotSame(x, y); + assertEquals(x.length(), y.length()); + for (int i = 0; i < SIZE; i++) { + assertEquals(x.get(i), y.get(i)); } } @@ -201,8 +212,8 @@ public class AtomicReferenceArrayTest ex * toString returns current value. */ public void testToString() { - Integer[] a = { two, one, three, four, seven}; - AtomicReferenceArray ai = new AtomicReferenceArray(a); - assertEquals(Arrays.toString(a), ai.toString()); + Integer[] a = { two, one, three, four, seven }; + AtomicReferenceArray aa = new AtomicReferenceArray(a); + assertEquals(Arrays.toString(a), aa.toString()); } }