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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.*; |
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import java.util.concurrent.*; |
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import java.io.*; |
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> |
import java.util.Arrays; |
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import java.util.Collection; |
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> |
import java.util.Comparator; |
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> |
import java.util.Iterator; |
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import java.util.NoSuchElementException; |
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import java.util.PriorityQueue; |
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import java.util.Queue; |
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|
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> |
import junit.framework.Test; |
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> |
import junit.framework.TestSuite; |
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public class PriorityQueueTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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} |
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/** |
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* Create a queue of given size containing consecutive |
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> |
* Returns a new queue of given size containing consecutive |
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* Integers 0 ... n. |
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*/ |
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private PriorityQueue<Integer> populatedQueue(int n) { |
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PriorityQueue<Integer> q = new PriorityQueue<Integer>(n); |
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assertTrue(q.isEmpty()); |
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< |
for (int i = n-1; i >= 0; i-=2) |
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for (int i = n-1; i >= 0; i -= 2) |
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assertTrue(q.offer(new Integer(i))); |
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for (int i = (n & 1); i < n; i+=2) |
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for (int i = (n & 1); i < n; i += 2) |
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assertTrue(q.offer(new Integer(i))); |
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assertFalse(q.isEmpty()); |
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assertEquals(n, q.size()); |
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*/ |
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public void testConstructor2() { |
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try { |
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PriorityQueue q = new PriorityQueue(0); |
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new PriorityQueue(0); |
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shouldThrow(); |
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} catch (IllegalArgumentException success) {} |
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} |
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*/ |
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public void testConstructor3() { |
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try { |
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PriorityQueue q = new PriorityQueue((Collection)null); |
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new PriorityQueue((Collection)null); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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public void testConstructor4() { |
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try { |
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Integer[] ints = new Integer[SIZE]; |
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< |
PriorityQueue q = new PriorityQueue(Arrays.asList(ints)); |
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> |
new PriorityQueue(Arrays.asList(ints)); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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Integer[] ints = new Integer[SIZE]; |
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for (int i = 0; i < SIZE-1; ++i) |
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ints[i] = new Integer(i); |
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< |
PriorityQueue q = new PriorityQueue(Arrays.asList(ints)); |
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> |
new PriorityQueue(Arrays.asList(ints)); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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*/ |
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public void testRemoveElement() { |
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PriorityQueue q = populatedQueue(SIZE); |
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< |
for (int i = 1; i < SIZE; i+=2) { |
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> |
for (int i = 1; i < SIZE; i += 2) { |
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assertTrue(q.contains(i)); |
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assertTrue(q.remove(i)); |
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assertFalse(q.contains(i)); |
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assertTrue(q.contains(i-1)); |
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} |
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< |
for (int i = 0; i < SIZE; i+=2) { |
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> |
for (int i = 0; i < SIZE; i += 2) { |
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assertTrue(q.contains(i)); |
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assertTrue(q.remove(i)); |
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assertFalse(q.contains(i)); |
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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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*/ |
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public void testIterator() { |
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PriorityQueue q = populatedQueue(SIZE); |
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– |
int i = 0; |
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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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– |
++i; |
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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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+ |
/** |
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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 PriorityQueue().iterator()); |
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} |
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|
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/** |
| 475 |
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assertFalse(it.hasNext()); |
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} |
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|
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– |
|
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/** |
| 479 |
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* toString contains toStrings of elements |
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*/ |
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PriorityQueue q = populatedQueue(SIZE); |
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String s = q.toString(); |
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for (int i = 0; i < SIZE; ++i) { |
| 485 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
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> |
assertTrue(s.contains(String.valueOf(i))); |
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} |
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} |
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|
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* A deserialized serialized queue has same elements |
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*/ |
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public void testSerialization() throws Exception { |
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< |
PriorityQueue q = populatedQueue(SIZE); |
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< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
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< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
| 496 |
< |
out.writeObject(q); |
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< |
out.close(); |
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< |
|
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< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
| 500 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
| 501 |
< |
PriorityQueue r = (PriorityQueue)in.readObject(); |
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< |
assertEquals(q.size(), r.size()); |
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< |
while (!q.isEmpty()) |
| 493 |
< |
assertEquals(q.remove(), r.remove()); |
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> |
Queue x = populatedQueue(SIZE); |
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> |
Queue y = serialClone(x); |
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> |
|
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> |
assertNotSame(x, y); |
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> |
assertEquals(x.size(), y.size()); |
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> |
while (!x.isEmpty()) { |
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> |
assertFalse(y.isEmpty()); |
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> |
assertEquals(x.remove(), y.remove()); |
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> |
} |
| 502 |
> |
assertTrue(y.isEmpty()); |
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} |
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} |
