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*/ |
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import junit.framework.*; |
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import java.io.BufferedInputStream; |
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import java.io.BufferedOutputStream; |
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import java.io.ByteArrayInputStream; |
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import java.io.ByteArrayOutputStream; |
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import java.io.ObjectInputStream; |
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import java.io.ObjectOutputStream; |
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import java.util.*; |
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import java.util.Arrays; |
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> |
import java.util.ArrayDeque; |
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import java.util.Collection; |
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import java.util.Deque; |
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import java.util.Iterator; |
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import java.util.NoSuchElementException; |
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import java.util.Queue; |
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import java.util.Random; |
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|
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public class ArrayDequeTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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} |
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|
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/** |
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* Create a deque of given size containing consecutive |
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* Returns a new deque of given size containing consecutive |
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* Integers 0 ... n. |
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*/ |
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private ArrayDeque<Integer> populatedDeque(int n) { |
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assertNull(q.peekLast()); |
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} |
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|
497 |
– |
|
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/** |
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* removeFirst() removes first element, or throws NSEE if empty |
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*/ |
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} |
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} |
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|
628 |
+ |
void checkToArray(ArrayDeque q) { |
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int size = q.size(); |
630 |
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Object[] o = q.toArray(); |
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+ |
assertEquals(size, o.length); |
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+ |
Iterator it = q.iterator(); |
633 |
+ |
for (int i = 0; i < size; i++) { |
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Integer x = (Integer) it.next(); |
635 |
+ |
assertEquals((Integer)o[0] + i, (int) x); |
636 |
+ |
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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*/ |
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public void testToArray() { |
644 |
< |
ArrayDeque q = populatedDeque(SIZE); |
645 |
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Object[] o = q.toArray(); |
646 |
< |
for (int i = 0; i < o.length; i++) |
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< |
assertSame(o[i], q.pollFirst()); |
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> |
ArrayDeque q = new ArrayDeque(); |
645 |
> |
for (int i = 0; i < SIZE; i++) { |
646 |
> |
checkToArray(q); |
647 |
> |
q.addLast(i); |
648 |
> |
} |
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> |
// Provoke wraparound |
650 |
> |
for (int i = 0; i < SIZE; i++) { |
651 |
> |
checkToArray(q); |
652 |
> |
assertEquals(i, q.poll()); |
653 |
> |
q.addLast(SIZE+i); |
654 |
> |
} |
655 |
> |
for (int i = 0; i < SIZE; i++) { |
656 |
> |
checkToArray(q); |
657 |
> |
assertEquals(SIZE+i, q.poll()); |
658 |
> |
} |
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> |
} |
660 |
> |
|
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> |
void checkToArray2(ArrayDeque 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]; |
665 |
> |
Integer[] a3 = new Integer[size+2]; |
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if (size > 0) Arrays.fill(a1, 42); |
667 |
> |
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); |
670 |
> |
Integer[] b2 = (Integer[]) q.toArray(a2); |
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> |
Integer[] b3 = (Integer[]) q.toArray(a3); |
672 |
> |
assertSame(a2, b2); |
673 |
> |
assertSame(a3, b3); |
674 |
> |
Iterator it = q.iterator(); |
675 |
> |
for (int i = 0; i < size; i++) { |
676 |
> |
Integer x = (Integer) it.next(); |
677 |
> |
assertSame(b1[i], x); |
678 |
> |
assertEquals(b1[0] + i, (int) x); |
679 |
> |
assertSame(b2[i], x); |
680 |
> |
assertSame(b3[i], x); |
681 |
> |
} |
682 |
> |
assertNull(a3[size]); |
683 |
> |
assertEquals(42, (int) a3[size+1]); |
684 |
> |
if (size > 0) { |
685 |
> |
assertNotSame(a1, b1); |
686 |
> |
assertEquals(size, b1.length); |
687 |
> |
for (int i = 0; i < a1.length; i++) { |
688 |
> |
assertEquals(42, (int) a1[i]); |
689 |
> |
} |
690 |
> |
} |
691 |
|
} |
692 |
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|
693 |
|
/** |
694 |
|
* toArray(a) contains all elements in FIFO order |
695 |
|
*/ |
696 |
|
public void testToArray2() { |
697 |
< |
ArrayDeque<Integer> q = populatedDeque(SIZE); |
698 |
< |
Integer[] ints = new Integer[SIZE]; |
699 |
< |
Integer[] array = q.toArray(ints); |
700 |
< |
assertSame(ints, array); |
701 |
< |
for (int i = 0; i < ints.length; i++) |
702 |
< |
assertSame(ints[i], q.remove()); |
697 |
> |
ArrayDeque q = new ArrayDeque(); |
698 |
> |
for (int i = 0; i < SIZE; i++) { |
699 |
> |
checkToArray2(q); |
700 |
> |
q.addLast(i); |
701 |
> |
} |
702 |
> |
// Provoke wraparound |
703 |
> |
for (int i = 0; i < SIZE; i++) { |
704 |
> |
checkToArray2(q); |
705 |
> |
assertEquals(i, q.poll()); |
706 |
> |
q.addLast(SIZE+i); |
707 |
> |
} |
708 |
> |
for (int i = 0; i < SIZE; i++) { |
709 |
> |
checkToArray2(q); |
710 |
> |
assertEquals(SIZE+i, q.poll()); |
711 |
> |
} |
712 |
|
} |
713 |
|
|
714 |
|
/** |
861 |
|
} |
862 |
|
} |
863 |
|
|
800 |
– |
|
864 |
|
/** |
865 |
|
* toString() contains toStrings of elements |
866 |
|
*/ |
868 |
|
ArrayDeque q = populatedDeque(SIZE); |
869 |
|
String s = q.toString(); |
870 |
|
for (int i = 0; i < SIZE; ++i) { |
871 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
871 |
> |
assertTrue(s.contains(String.valueOf(i))); |
872 |
|
} |
873 |
|
} |
874 |
|
|
876 |
|
* A deserialized serialized deque has same elements in same order |
877 |
|
*/ |
878 |
|
public void testSerialization() throws Exception { |
879 |
< |
ArrayDeque q = populatedDeque(SIZE); |
880 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
881 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
882 |
< |
out.writeObject(q); |
883 |
< |
out.close(); |
884 |
< |
|
885 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
886 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
887 |
< |
ArrayDeque r = (ArrayDeque)in.readObject(); |
888 |
< |
assertEquals(q.size(), r.size()); |
889 |
< |
while (!q.isEmpty()) |
890 |
< |
assertEquals(q.remove(), r.remove()); |
879 |
> |
Queue x = populatedDeque(SIZE); |
880 |
> |
Queue y = serialClone(x); |
881 |
> |
|
882 |
> |
assertTrue(x != y); |
883 |
> |
assertEquals(x.size(), y.size()); |
884 |
> |
assertEquals(x.toString(), y.toString()); |
885 |
> |
assertTrue(Arrays.equals(x.toArray(), y.toArray())); |
886 |
> |
while (!x.isEmpty()) { |
887 |
> |
assertFalse(y.isEmpty()); |
888 |
> |
assertEquals(x.remove(), y.remove()); |
889 |
> |
} |
890 |
> |
assertTrue(y.isEmpty()); |
891 |
|
} |
892 |
|
|
893 |
|
} |