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* Pat Fisher, Mike Judd. |
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*/ |
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import junit.framework.*; |
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import java.util.Arrays; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import java.util.ArrayList; |
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import java.util.Arrays; |
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import java.util.Collection; |
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import java.util.Iterator; |
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import java.util.NoSuchElementException; |
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import java.util.concurrent.CountDownLatch; |
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import java.util.concurrent.Executors; |
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import java.util.concurrent.ExecutorService; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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|
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import junit.framework.Test; |
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public class ArrayBlockingQueueTest extends JSR166TestCase { |
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ints[i] = i; |
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Collection<Integer> elements = Arrays.asList(ints); |
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try { |
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new ArrayBlockingQueue(SIZE, false, Arrays.asList(ints)); |
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new ArrayBlockingQueue(SIZE, false, elements); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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public void testPut() throws InterruptedException { |
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ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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Integer I = new Integer(i); |
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q.put(I); |
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assertTrue(q.contains(I)); |
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Integer x = new Integer(i); |
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q.put(x); |
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assertTrue(q.contains(x)); |
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} |
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assertEquals(0, q.remainingCapacity()); |
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} |
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assertTrue(q.removeAll(p)); |
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assertEquals(SIZE-i, q.size()); |
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for (int j = 0; j < i; ++j) { |
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Integer I = (Integer)(p.remove()); |
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assertFalse(q.contains(I)); |
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Integer x = (Integer)(p.remove()); |
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assertFalse(q.contains(x)); |
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} |
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} |
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} |
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void checkToArray(ArrayBlockingQueue q) { |
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int size = q.size(); |
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Object[] o = q.toArray(); |
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assertEquals(size, o.length); |
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Iterator it = q.iterator(); |
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for (int i = 0; i < size; i++) { |
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Integer x = (Integer) it.next(); |
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assertEquals((Integer)o[0] + i, (int) x); |
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assertSame(o[i], x); |
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} |
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} |
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|
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/** |
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* toArray contains all elements in FIFO order |
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* toArray() contains all elements in FIFO order |
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*/ |
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public void testToArray() { |
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ArrayBlockingQueue q = populatedQueue(SIZE); |
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Object[] o = q.toArray(); |
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for (int i = 0; i < o.length; i++) |
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assertSame(o[i], q.poll()); |
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ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
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for (int i = 0; i < SIZE; i++) { |
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checkToArray(q); |
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q.add(i); |
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} |
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// Provoke wraparound |
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for (int i = 0; i < SIZE; i++) { |
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checkToArray(q); |
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assertEquals(i, q.poll()); |
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checkToArray(q); |
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q.add(SIZE+i); |
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} |
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for (int i = 0; i < SIZE; i++) { |
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checkToArray(q); |
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assertEquals(SIZE+i, q.poll()); |
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} |
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} |
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|
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void checkToArray2(ArrayBlockingQueue q) { |
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int size = q.size(); |
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Integer[] a1 = size == 0 ? null : new Integer[size-1]; |
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Integer[] a2 = new Integer[size]; |
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Integer[] a3 = new Integer[size+2]; |
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if (size > 0) Arrays.fill(a1, 42); |
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Arrays.fill(a2, 42); |
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Arrays.fill(a3, 42); |
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Integer[] b1 = size == 0 ? null : (Integer[]) q.toArray(a1); |
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Integer[] b2 = (Integer[]) q.toArray(a2); |
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Integer[] b3 = (Integer[]) q.toArray(a3); |
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assertSame(a2, b2); |
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assertSame(a3, b3); |
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Iterator it = q.iterator(); |
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for (int i = 0; i < size; i++) { |
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Integer x = (Integer) it.next(); |
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assertSame(b1[i], x); |
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assertEquals(b1[0] + i, (int) x); |
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assertSame(b2[i], x); |
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assertSame(b3[i], x); |
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} |
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assertNull(a3[size]); |
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assertEquals(42, (int) a3[size+1]); |
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if (size > 0) { |
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assertNotSame(a1, b1); |
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assertEquals(size, b1.length); |
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for (int i = 0; i < a1.length; i++) { |
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assertEquals(42, (int) a1[i]); |
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} |
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} |
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} |
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/** |
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* toArray(a) contains all elements in FIFO order |
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*/ |
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public void testToArray2() { |
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ArrayBlockingQueue<Integer> q = populatedQueue(SIZE); |
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Integer[] ints = new Integer[SIZE]; |
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Integer[] array = q.toArray(ints); |
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assertSame(ints, array); |
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for (int i = 0; i < ints.length; i++) |
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assertSame(ints[i], q.poll()); |
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ArrayBlockingQueue q = new ArrayBlockingQueue(SIZE); |
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for (int i = 0; i < SIZE; i++) { |
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checkToArray2(q); |
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q.add(i); |
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} |
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// Provoke wraparound |
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for (int i = 0; i < SIZE; i++) { |
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checkToArray2(q); |
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assertEquals(i, q.poll()); |
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checkToArray2(q); |
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q.add(SIZE+i); |
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} |
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for (int i = 0; i < SIZE; i++) { |
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checkToArray2(q); |
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assertEquals(SIZE+i, q.poll()); |
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} |
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} |
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/** |
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public void testIterator() throws InterruptedException { |
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ArrayBlockingQueue q = populatedQueue(SIZE); |
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Iterator it = q.iterator(); |
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while (it.hasNext()) { |
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int i; |
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for (i = 0; it.hasNext(); i++) |
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assertTrue(q.contains(it.next())); |
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assertEquals(i, SIZE); |
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assertIteratorExhausted(it); |
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it = q.iterator(); |
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for (i = 0; it.hasNext(); i++) |
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assertEquals(it.next(), q.take()); |
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} |
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assertEquals(i, SIZE); |
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assertIteratorExhausted(it); |
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} |
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/** |
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* iterator of empty collection has no elements |
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*/ |
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public void testEmptyIterator() { |
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assertIteratorExhausted(new ArrayBlockingQueue(SIZE).iterator()); |
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} |
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/** |
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Queue x = populatedQueue(SIZE); |
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Queue y = serialClone(x); |
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assertTrue(x != y); |
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assertNotSame(x, y); |
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assertEquals(x.size(), y.size()); |
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assertEquals(x.toString(), y.toString()); |
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assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
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assertEquals(SIZE-k, q.size()); |
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for (int j = 0; j < k; ++j) |
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assertEquals(l.get(j), new Integer(j)); |
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while (q.poll() != null) ; |
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do {} while (q.poll() != null); |
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} |
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} |
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/** |
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* remove(null), contains(null) always return false |
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*/ |
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public void testNeverContainsNull() { |
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Collection<?>[] qs = { |
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new ArrayBlockingQueue<Object>(10), |
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populatedQueue(2), |
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}; |
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for (Collection<?> q : qs) { |
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assertFalse(q.contains(null)); |
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assertFalse(q.remove(null)); |
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} |
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} |
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} |
