1 |
/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
3 |
* Expert Group and released to the public domain, as explained at |
4 |
* http://creativecommons.org/licenses/publicdomain |
5 |
*/ |
6 |
|
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import junit.framework.*; |
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import java.util.*; |
9 |
import java.util.concurrent.*; |
10 |
import java.io.*; |
11 |
|
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public class ConcurrentSkipListSubSetTest extends JSR166TestCase { |
13 |
public static void main(String[] args) { |
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junit.textui.TestRunner.run (suite()); |
15 |
} |
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public static Test suite() { |
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return new TestSuite(ConcurrentSkipListSubSetTest.class); |
18 |
} |
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|
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static class MyReverseComparator implements Comparator { |
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public int compare(Object x, Object y) { |
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return ((Comparable)y).compareTo(x); |
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} |
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} |
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|
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/** |
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* Create a set of given size containing consecutive |
28 |
* Integers 0 ... n. |
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*/ |
30 |
private NavigableSet populatedSet(int n) { |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
32 |
assertTrue(q.isEmpty()); |
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|
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for (int i = n-1; i >= 0; i-=2) |
35 |
assertTrue(q.add(new Integer(i))); |
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for (int i = (n & 1); i < n; i+=2) |
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assertTrue(q.add(new Integer(i))); |
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assertTrue(q.add(new Integer(-n))); |
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assertTrue(q.add(new Integer(n))); |
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NavigableSet s = q.subSet(new Integer(0), true, new Integer(n), false); |
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assertFalse(s.isEmpty()); |
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assertEquals(n, s.size()); |
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return s; |
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} |
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|
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/** |
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* Create set of first 5 ints |
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*/ |
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private NavigableSet set5() { |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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assertTrue(q.isEmpty()); |
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q.add(one); |
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q.add(two); |
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q.add(three); |
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q.add(four); |
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q.add(five); |
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q.add(zero); |
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q.add(seven); |
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NavigableSet s = q.subSet(one, true, seven, false); |
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assertEquals(5, s.size()); |
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return s; |
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} |
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|
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/** |
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* Create set of first 5 negative ints |
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*/ |
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private NavigableSet dset5() { |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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assertTrue(q.isEmpty()); |
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q.add(m1); |
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q.add(m2); |
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q.add(m3); |
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q.add(m4); |
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q.add(m5); |
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NavigableSet s = q.descendingSet(); |
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assertEquals(5, s.size()); |
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return s; |
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} |
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|
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private static NavigableSet set0() { |
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ConcurrentSkipListSet set = new ConcurrentSkipListSet(); |
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assertTrue(set.isEmpty()); |
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return set.tailSet(m1, true); |
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} |
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|
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private static NavigableSet dset0() { |
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ConcurrentSkipListSet set = new ConcurrentSkipListSet(); |
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assertTrue(set.isEmpty()); |
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return set; |
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} |
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|
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/** |
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* A new set has unbounded capacity |
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*/ |
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public void testConstructor1() { |
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assertEquals(0, set0().size()); |
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} |
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|
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|
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/** |
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* isEmpty is true before add, false after |
102 |
*/ |
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public void testEmpty() { |
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NavigableSet q = set0(); |
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assertTrue(q.isEmpty()); |
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q.add(new Integer(1)); |
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assertFalse(q.isEmpty()); |
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q.add(new Integer(2)); |
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q.pollFirst(); |
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q.pollFirst(); |
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assertTrue(q.isEmpty()); |
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} |
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|
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/** |
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* size changes when elements added and removed |
116 |
*/ |
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public void testSize() { |
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NavigableSet q = populatedSet(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(SIZE-i, q.size()); |
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q.pollFirst(); |
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} |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(i, q.size()); |
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q.add(new Integer(i)); |
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} |
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} |
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|
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/** |
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* add(null) throws NPE |
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*/ |
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public void testAddNull() { |
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try { |
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NavigableSet q = set0(); |
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q.add(null); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* Add of comparable element succeeds |
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*/ |
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public void testAdd() { |
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NavigableSet q = set0(); |
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assertTrue(q.add(six)); |
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} |
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|
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/** |
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* Add of duplicate element fails |
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*/ |
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public void testAddDup() { |
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NavigableSet q = set0(); |
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assertTrue(q.add(six)); |
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assertFalse(q.add(six)); |
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} |
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|
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/** |
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* Add of non-Comparable throws CCE |
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*/ |
160 |
public void testAddNonComparable() { |
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try { |
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NavigableSet q = set0(); |
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q.add(new Object()); |
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q.add(new Object()); |
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q.add(new Object()); |
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shouldThrow(); |
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} catch (ClassCastException success) {} |
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} |
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|
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|
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/** |
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* addAll(null) throws NPE |
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*/ |
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public void testAddAll1() { |
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try { |
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NavigableSet q = set0(); |
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q.addAll(null); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
180 |
} |
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/** |
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* addAll of a collection with null elements throws NPE |
183 |
*/ |
184 |
public void testAddAll2() { |
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try { |
186 |
NavigableSet q = set0(); |
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Integer[] ints = new Integer[SIZE]; |
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q.addAll(Arrays.asList(ints)); |
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shouldThrow(); |
190 |
} catch (NullPointerException success) {} |
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} |
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/** |
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* addAll of a collection with any null elements throws NPE after |
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* possibly adding some elements |
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*/ |
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public void testAddAll3() { |
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try { |
198 |
NavigableSet q = set0(); |
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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+SIZE); |
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q.addAll(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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/** |
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* Set contains all elements of successful addAll |
209 |
*/ |
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public void testAddAll5() { |
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Integer[] empty = new Integer[0]; |
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Integer[] ints = new Integer[SIZE]; |
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for (int i = 0; i < SIZE; ++i) |
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ints[i] = new Integer(SIZE-1- i); |
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NavigableSet q = set0(); |
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assertFalse(q.addAll(Arrays.asList(empty))); |
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assertTrue(q.addAll(Arrays.asList(ints))); |
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for (int i = 0; i < SIZE; ++i) |
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assertEquals(new Integer(i), q.pollFirst()); |
220 |
} |
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|
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/** |
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* poll succeeds unless empty |
224 |
*/ |
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public void testPoll() { |
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NavigableSet q = populatedSet(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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assertEquals(i, q.pollFirst()); |
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} |
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assertNull(q.pollFirst()); |
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} |
232 |
|
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/** |
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* remove(x) removes x and returns true if present |
235 |
*/ |
236 |
public void testRemoveElement() { |
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NavigableSet q = populatedSet(SIZE); |
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for (int i = 1; i < SIZE; i+=2) { |
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assertTrue(q.remove(new Integer(i))); |
240 |
} |
241 |
for (int i = 0; i < SIZE; i+=2) { |
242 |
assertTrue(q.remove(new Integer(i))); |
243 |
assertFalse(q.remove(new Integer(i+1))); |
244 |
} |
245 |
assertTrue(q.isEmpty()); |
246 |
} |
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|
248 |
/** |
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* contains(x) reports true when elements added but not yet removed |
250 |
*/ |
251 |
public void testContains() { |
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NavigableSet q = populatedSet(SIZE); |
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for (int i = 0; i < SIZE; ++i) { |
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assertTrue(q.contains(new Integer(i))); |
255 |
q.pollFirst(); |
256 |
assertFalse(q.contains(new Integer(i))); |
257 |
} |
258 |
} |
259 |
|
260 |
/** |
261 |
* clear removes all elements |
262 |
*/ |
263 |
public void testClear() { |
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NavigableSet q = populatedSet(SIZE); |
265 |
q.clear(); |
266 |
assertTrue(q.isEmpty()); |
267 |
assertEquals(0, q.size()); |
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q.add(new Integer(1)); |
269 |
assertFalse(q.isEmpty()); |
270 |
q.clear(); |
271 |
assertTrue(q.isEmpty()); |
272 |
} |
273 |
|
274 |
/** |
275 |
* containsAll(c) is true when c contains a subset of elements |
276 |
*/ |
277 |
public void testContainsAll() { |
278 |
NavigableSet q = populatedSet(SIZE); |
279 |
NavigableSet p = set0(); |
280 |
for (int i = 0; i < SIZE; ++i) { |
281 |
assertTrue(q.containsAll(p)); |
282 |
assertFalse(p.containsAll(q)); |
283 |
p.add(new Integer(i)); |
284 |
} |
285 |
assertTrue(p.containsAll(q)); |
286 |
} |
287 |
|
288 |
/** |
289 |
* retainAll(c) retains only those elements of c and reports true if changed |
290 |
*/ |
291 |
public void testRetainAll() { |
292 |
NavigableSet q = populatedSet(SIZE); |
293 |
NavigableSet p = populatedSet(SIZE); |
294 |
for (int i = 0; i < SIZE; ++i) { |
295 |
boolean changed = q.retainAll(p); |
296 |
if (i == 0) |
297 |
assertFalse(changed); |
298 |
else |
299 |
assertTrue(changed); |
300 |
|
301 |
assertTrue(q.containsAll(p)); |
302 |
assertEquals(SIZE-i, q.size()); |
303 |
p.pollFirst(); |
304 |
} |
305 |
} |
306 |
|
307 |
/** |
308 |
* removeAll(c) removes only those elements of c and reports true if changed |
309 |
*/ |
310 |
public void testRemoveAll() { |
311 |
for (int i = 1; i < SIZE; ++i) { |
312 |
NavigableSet q = populatedSet(SIZE); |
313 |
NavigableSet p = populatedSet(i); |
314 |
assertTrue(q.removeAll(p)); |
315 |
assertEquals(SIZE-i, q.size()); |
316 |
for (int j = 0; j < i; ++j) { |
317 |
Integer I = (Integer)(p.pollFirst()); |
318 |
assertFalse(q.contains(I)); |
319 |
} |
320 |
} |
321 |
} |
322 |
|
323 |
|
324 |
|
325 |
/** |
326 |
* lower returns preceding element |
327 |
*/ |
328 |
public void testLower() { |
329 |
NavigableSet q = set5(); |
330 |
Object e1 = q.lower(three); |
331 |
assertEquals(two, e1); |
332 |
|
333 |
Object e2 = q.lower(six); |
334 |
assertEquals(five, e2); |
335 |
|
336 |
Object e3 = q.lower(one); |
337 |
assertNull(e3); |
338 |
|
339 |
Object e4 = q.lower(zero); |
340 |
assertNull(e4); |
341 |
|
342 |
} |
343 |
|
344 |
/** |
345 |
* higher returns next element |
346 |
*/ |
347 |
public void testHigher() { |
348 |
NavigableSet q = set5(); |
349 |
Object e1 = q.higher(three); |
350 |
assertEquals(four, e1); |
351 |
|
352 |
Object e2 = q.higher(zero); |
353 |
assertEquals(one, e2); |
354 |
|
355 |
Object e3 = q.higher(five); |
356 |
assertNull(e3); |
357 |
|
358 |
Object e4 = q.higher(six); |
359 |
assertNull(e4); |
360 |
|
361 |
} |
362 |
|
363 |
/** |
364 |
* floor returns preceding element |
365 |
*/ |
366 |
public void testFloor() { |
367 |
NavigableSet q = set5(); |
368 |
Object e1 = q.floor(three); |
369 |
assertEquals(three, e1); |
370 |
|
371 |
Object e2 = q.floor(six); |
372 |
assertEquals(five, e2); |
373 |
|
374 |
Object e3 = q.floor(one); |
375 |
assertEquals(one, e3); |
376 |
|
377 |
Object e4 = q.floor(zero); |
378 |
assertNull(e4); |
379 |
|
380 |
} |
381 |
|
382 |
/** |
383 |
* ceiling returns next element |
384 |
*/ |
385 |
public void testCeiling() { |
386 |
NavigableSet q = set5(); |
387 |
Object e1 = q.ceiling(three); |
388 |
assertEquals(three, e1); |
389 |
|
390 |
Object e2 = q.ceiling(zero); |
391 |
assertEquals(one, e2); |
392 |
|
393 |
Object e3 = q.ceiling(five); |
394 |
assertEquals(five, e3); |
395 |
|
396 |
Object e4 = q.ceiling(six); |
397 |
assertNull(e4); |
398 |
|
399 |
} |
400 |
|
401 |
/** |
402 |
* toArray contains all elements |
403 |
*/ |
404 |
public void testToArray() { |
405 |
NavigableSet q = populatedSet(SIZE); |
406 |
Object[] o = q.toArray(); |
407 |
Arrays.sort(o); |
408 |
for (int i = 0; i < o.length; i++) |
409 |
assertEquals(o[i], q.pollFirst()); |
410 |
} |
411 |
|
412 |
/** |
413 |
* toArray(a) contains all elements |
414 |
*/ |
415 |
public void testToArray2() { |
416 |
NavigableSet q = populatedSet(SIZE); |
417 |
Integer[] ints = new Integer[SIZE]; |
418 |
ints = (Integer[])q.toArray(ints); |
419 |
Arrays.sort(ints); |
420 |
for (int i = 0; i < ints.length; i++) |
421 |
assertEquals(ints[i], q.pollFirst()); |
422 |
} |
423 |
|
424 |
/** |
425 |
* iterator iterates through all elements |
426 |
*/ |
427 |
public void testIterator() { |
428 |
NavigableSet q = populatedSet(SIZE); |
429 |
int i = 0; |
430 |
Iterator it = q.iterator(); |
431 |
while (it.hasNext()) { |
432 |
assertTrue(q.contains(it.next())); |
433 |
++i; |
434 |
} |
435 |
assertEquals(i, SIZE); |
436 |
} |
437 |
|
438 |
/** |
439 |
* iterator of empty set has no elements |
440 |
*/ |
441 |
public void testEmptyIterator() { |
442 |
NavigableSet q = set0(); |
443 |
int i = 0; |
444 |
Iterator it = q.iterator(); |
445 |
while (it.hasNext()) { |
446 |
assertTrue(q.contains(it.next())); |
447 |
++i; |
448 |
} |
449 |
assertEquals(i, 0); |
450 |
} |
451 |
|
452 |
/** |
453 |
* iterator.remove removes current element |
454 |
*/ |
455 |
public void testIteratorRemove () { |
456 |
final NavigableSet q = set0(); |
457 |
q.add(new Integer(2)); |
458 |
q.add(new Integer(1)); |
459 |
q.add(new Integer(3)); |
460 |
|
461 |
Iterator it = q.iterator(); |
462 |
it.next(); |
463 |
it.remove(); |
464 |
|
465 |
it = q.iterator(); |
466 |
assertEquals(it.next(), new Integer(2)); |
467 |
assertEquals(it.next(), new Integer(3)); |
468 |
assertFalse(it.hasNext()); |
469 |
} |
470 |
|
471 |
|
472 |
/** |
473 |
* toString contains toStrings of elements |
474 |
*/ |
475 |
public void testToString() { |
476 |
NavigableSet q = populatedSet(SIZE); |
477 |
String s = q.toString(); |
478 |
for (int i = 0; i < SIZE; ++i) { |
479 |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
480 |
} |
481 |
} |
482 |
|
483 |
/** |
484 |
* A deserialized serialized set has same elements |
485 |
*/ |
486 |
public void testSerialization() throws Exception { |
487 |
NavigableSet q = populatedSet(SIZE); |
488 |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
489 |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
490 |
out.writeObject(q); |
491 |
out.close(); |
492 |
|
493 |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
494 |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
495 |
NavigableSet r = (NavigableSet)in.readObject(); |
496 |
assertEquals(q.size(), r.size()); |
497 |
while (!q.isEmpty()) |
498 |
assertEquals(q.pollFirst(), r.pollFirst()); |
499 |
} |
500 |
|
501 |
/** |
502 |
* subSet returns set with keys in requested range |
503 |
*/ |
504 |
public void testSubSetContents() { |
505 |
NavigableSet set = set5(); |
506 |
SortedSet sm = set.subSet(two, four); |
507 |
assertEquals(two, sm.first()); |
508 |
assertEquals(three, sm.last()); |
509 |
assertEquals(2, sm.size()); |
510 |
assertFalse(sm.contains(one)); |
511 |
assertTrue(sm.contains(two)); |
512 |
assertTrue(sm.contains(three)); |
513 |
assertFalse(sm.contains(four)); |
514 |
assertFalse(sm.contains(five)); |
515 |
Iterator i = sm.iterator(); |
516 |
Object k; |
517 |
k = (Integer)(i.next()); |
518 |
assertEquals(two, k); |
519 |
k = (Integer)(i.next()); |
520 |
assertEquals(three, k); |
521 |
assertFalse(i.hasNext()); |
522 |
Iterator j = sm.iterator(); |
523 |
j.next(); |
524 |
j.remove(); |
525 |
assertFalse(set.contains(two)); |
526 |
assertEquals(4, set.size()); |
527 |
assertEquals(1, sm.size()); |
528 |
assertEquals(three, sm.first()); |
529 |
assertEquals(three, sm.last()); |
530 |
assertTrue(sm.remove(three)); |
531 |
assertTrue(sm.isEmpty()); |
532 |
assertEquals(3, set.size()); |
533 |
} |
534 |
|
535 |
public void testSubSetContents2() { |
536 |
NavigableSet set = set5(); |
537 |
SortedSet sm = set.subSet(two, three); |
538 |
assertEquals(1, sm.size()); |
539 |
assertEquals(two, sm.first()); |
540 |
assertEquals(two, sm.last()); |
541 |
assertFalse(sm.contains(one)); |
542 |
assertTrue(sm.contains(two)); |
543 |
assertFalse(sm.contains(three)); |
544 |
assertFalse(sm.contains(four)); |
545 |
assertFalse(sm.contains(five)); |
546 |
Iterator i = sm.iterator(); |
547 |
Object k; |
548 |
k = (Integer)(i.next()); |
549 |
assertEquals(two, k); |
550 |
assertFalse(i.hasNext()); |
551 |
Iterator j = sm.iterator(); |
552 |
j.next(); |
553 |
j.remove(); |
554 |
assertFalse(set.contains(two)); |
555 |
assertEquals(4, set.size()); |
556 |
assertEquals(0, sm.size()); |
557 |
assertTrue(sm.isEmpty()); |
558 |
assertFalse(sm.remove(three)); |
559 |
assertEquals(4, set.size()); |
560 |
} |
561 |
|
562 |
/** |
563 |
* headSet returns set with keys in requested range |
564 |
*/ |
565 |
public void testHeadSetContents() { |
566 |
NavigableSet set = set5(); |
567 |
SortedSet sm = set.headSet(four); |
568 |
assertTrue(sm.contains(one)); |
569 |
assertTrue(sm.contains(two)); |
570 |
assertTrue(sm.contains(three)); |
571 |
assertFalse(sm.contains(four)); |
572 |
assertFalse(sm.contains(five)); |
573 |
Iterator i = sm.iterator(); |
574 |
Object k; |
575 |
k = (Integer)(i.next()); |
576 |
assertEquals(one, k); |
577 |
k = (Integer)(i.next()); |
578 |
assertEquals(two, k); |
579 |
k = (Integer)(i.next()); |
580 |
assertEquals(three, k); |
581 |
assertFalse(i.hasNext()); |
582 |
sm.clear(); |
583 |
assertTrue(sm.isEmpty()); |
584 |
assertEquals(2, set.size()); |
585 |
assertEquals(four, set.first()); |
586 |
} |
587 |
|
588 |
/** |
589 |
* tailSet returns set with keys in requested range |
590 |
*/ |
591 |
public void testTailSetContents() { |
592 |
NavigableSet set = set5(); |
593 |
SortedSet sm = set.tailSet(two); |
594 |
assertFalse(sm.contains(one)); |
595 |
assertTrue(sm.contains(two)); |
596 |
assertTrue(sm.contains(three)); |
597 |
assertTrue(sm.contains(four)); |
598 |
assertTrue(sm.contains(five)); |
599 |
Iterator i = sm.iterator(); |
600 |
Object k; |
601 |
k = (Integer)(i.next()); |
602 |
assertEquals(two, k); |
603 |
k = (Integer)(i.next()); |
604 |
assertEquals(three, k); |
605 |
k = (Integer)(i.next()); |
606 |
assertEquals(four, k); |
607 |
k = (Integer)(i.next()); |
608 |
assertEquals(five, k); |
609 |
assertFalse(i.hasNext()); |
610 |
|
611 |
SortedSet ssm = sm.tailSet(four); |
612 |
assertEquals(four, ssm.first()); |
613 |
assertEquals(five, ssm.last()); |
614 |
assertTrue(ssm.remove(four)); |
615 |
assertEquals(1, ssm.size()); |
616 |
assertEquals(3, sm.size()); |
617 |
assertEquals(4, set.size()); |
618 |
} |
619 |
|
620 |
/** |
621 |
* size changes when elements added and removed |
622 |
*/ |
623 |
public void testDescendingSize() { |
624 |
NavigableSet q = populatedSet(SIZE); |
625 |
for (int i = 0; i < SIZE; ++i) { |
626 |
assertEquals(SIZE-i, q.size()); |
627 |
q.pollFirst(); |
628 |
} |
629 |
for (int i = 0; i < SIZE; ++i) { |
630 |
assertEquals(i, q.size()); |
631 |
q.add(new Integer(i)); |
632 |
} |
633 |
} |
634 |
|
635 |
/** |
636 |
* add(null) throws NPE |
637 |
*/ |
638 |
public void testDescendingAddNull() { |
639 |
try { |
640 |
NavigableSet q = dset0(); |
641 |
q.add(null); |
642 |
shouldThrow(); |
643 |
} catch (NullPointerException success) {} |
644 |
} |
645 |
|
646 |
/** |
647 |
* Add of comparable element succeeds |
648 |
*/ |
649 |
public void testDescendingAdd() { |
650 |
NavigableSet q = dset0(); |
651 |
assertTrue(q.add(m6)); |
652 |
} |
653 |
|
654 |
/** |
655 |
* Add of duplicate element fails |
656 |
*/ |
657 |
public void testDescendingAddDup() { |
658 |
NavigableSet q = dset0(); |
659 |
assertTrue(q.add(m6)); |
660 |
assertFalse(q.add(m6)); |
661 |
} |
662 |
|
663 |
/** |
664 |
* Add of non-Comparable throws CCE |
665 |
*/ |
666 |
public void testDescendingAddNonComparable() { |
667 |
try { |
668 |
NavigableSet q = dset0(); |
669 |
q.add(new Object()); |
670 |
q.add(new Object()); |
671 |
q.add(new Object()); |
672 |
shouldThrow(); |
673 |
} catch (ClassCastException success) {} |
674 |
} |
675 |
|
676 |
|
677 |
/** |
678 |
* addAll(null) throws NPE |
679 |
*/ |
680 |
public void testDescendingAddAll1() { |
681 |
try { |
682 |
NavigableSet q = dset0(); |
683 |
q.addAll(null); |
684 |
shouldThrow(); |
685 |
} catch (NullPointerException success) {} |
686 |
} |
687 |
/** |
688 |
* addAll of a collection with null elements throws NPE |
689 |
*/ |
690 |
public void testDescendingAddAll2() { |
691 |
try { |
692 |
NavigableSet q = dset0(); |
693 |
Integer[] ints = new Integer[SIZE]; |
694 |
q.addAll(Arrays.asList(ints)); |
695 |
shouldThrow(); |
696 |
} catch (NullPointerException success) {} |
697 |
} |
698 |
/** |
699 |
* addAll of a collection with any null elements throws NPE after |
700 |
* possibly adding some elements |
701 |
*/ |
702 |
public void testDescendingAddAll3() { |
703 |
try { |
704 |
NavigableSet q = dset0(); |
705 |
Integer[] ints = new Integer[SIZE]; |
706 |
for (int i = 0; i < SIZE-1; ++i) |
707 |
ints[i] = new Integer(i+SIZE); |
708 |
q.addAll(Arrays.asList(ints)); |
709 |
shouldThrow(); |
710 |
} catch (NullPointerException success) {} |
711 |
} |
712 |
|
713 |
/** |
714 |
* Set contains all elements of successful addAll |
715 |
*/ |
716 |
public void testDescendingAddAll5() { |
717 |
Integer[] empty = new Integer[0]; |
718 |
Integer[] ints = new Integer[SIZE]; |
719 |
for (int i = 0; i < SIZE; ++i) |
720 |
ints[i] = new Integer(SIZE-1- i); |
721 |
NavigableSet q = dset0(); |
722 |
assertFalse(q.addAll(Arrays.asList(empty))); |
723 |
assertTrue(q.addAll(Arrays.asList(ints))); |
724 |
for (int i = 0; i < SIZE; ++i) |
725 |
assertEquals(new Integer(i), q.pollFirst()); |
726 |
} |
727 |
|
728 |
/** |
729 |
* poll succeeds unless empty |
730 |
*/ |
731 |
public void testDescendingPoll() { |
732 |
NavigableSet q = populatedSet(SIZE); |
733 |
for (int i = 0; i < SIZE; ++i) { |
734 |
assertEquals(i, q.pollFirst()); |
735 |
} |
736 |
assertNull(q.pollFirst()); |
737 |
} |
738 |
|
739 |
/** |
740 |
* remove(x) removes x and returns true if present |
741 |
*/ |
742 |
public void testDescendingRemoveElement() { |
743 |
NavigableSet q = populatedSet(SIZE); |
744 |
for (int i = 1; i < SIZE; i+=2) { |
745 |
assertTrue(q.remove(new Integer(i))); |
746 |
} |
747 |
for (int i = 0; i < SIZE; i+=2) { |
748 |
assertTrue(q.remove(new Integer(i))); |
749 |
assertFalse(q.remove(new Integer(i+1))); |
750 |
} |
751 |
assertTrue(q.isEmpty()); |
752 |
} |
753 |
|
754 |
/** |
755 |
* contains(x) reports true when elements added but not yet removed |
756 |
*/ |
757 |
public void testDescendingContains() { |
758 |
NavigableSet q = populatedSet(SIZE); |
759 |
for (int i = 0; i < SIZE; ++i) { |
760 |
assertTrue(q.contains(new Integer(i))); |
761 |
q.pollFirst(); |
762 |
assertFalse(q.contains(new Integer(i))); |
763 |
} |
764 |
} |
765 |
|
766 |
/** |
767 |
* clear removes all elements |
768 |
*/ |
769 |
public void testDescendingClear() { |
770 |
NavigableSet q = populatedSet(SIZE); |
771 |
q.clear(); |
772 |
assertTrue(q.isEmpty()); |
773 |
assertEquals(0, q.size()); |
774 |
q.add(new Integer(1)); |
775 |
assertFalse(q.isEmpty()); |
776 |
q.clear(); |
777 |
assertTrue(q.isEmpty()); |
778 |
} |
779 |
|
780 |
/** |
781 |
* containsAll(c) is true when c contains a subset of elements |
782 |
*/ |
783 |
public void testDescendingContainsAll() { |
784 |
NavigableSet q = populatedSet(SIZE); |
785 |
NavigableSet p = dset0(); |
786 |
for (int i = 0; i < SIZE; ++i) { |
787 |
assertTrue(q.containsAll(p)); |
788 |
assertFalse(p.containsAll(q)); |
789 |
p.add(new Integer(i)); |
790 |
} |
791 |
assertTrue(p.containsAll(q)); |
792 |
} |
793 |
|
794 |
/** |
795 |
* retainAll(c) retains only those elements of c and reports true if changed |
796 |
*/ |
797 |
public void testDescendingRetainAll() { |
798 |
NavigableSet q = populatedSet(SIZE); |
799 |
NavigableSet p = populatedSet(SIZE); |
800 |
for (int i = 0; i < SIZE; ++i) { |
801 |
boolean changed = q.retainAll(p); |
802 |
if (i == 0) |
803 |
assertFalse(changed); |
804 |
else |
805 |
assertTrue(changed); |
806 |
|
807 |
assertTrue(q.containsAll(p)); |
808 |
assertEquals(SIZE-i, q.size()); |
809 |
p.pollFirst(); |
810 |
} |
811 |
} |
812 |
|
813 |
/** |
814 |
* removeAll(c) removes only those elements of c and reports true if changed |
815 |
*/ |
816 |
public void testDescendingRemoveAll() { |
817 |
for (int i = 1; i < SIZE; ++i) { |
818 |
NavigableSet q = populatedSet(SIZE); |
819 |
NavigableSet p = populatedSet(i); |
820 |
assertTrue(q.removeAll(p)); |
821 |
assertEquals(SIZE-i, q.size()); |
822 |
for (int j = 0; j < i; ++j) { |
823 |
Integer I = (Integer)(p.pollFirst()); |
824 |
assertFalse(q.contains(I)); |
825 |
} |
826 |
} |
827 |
} |
828 |
|
829 |
|
830 |
|
831 |
/** |
832 |
* lower returns preceding element |
833 |
*/ |
834 |
public void testDescendingLower() { |
835 |
NavigableSet q = dset5(); |
836 |
Object e1 = q.lower(m3); |
837 |
assertEquals(m2, e1); |
838 |
|
839 |
Object e2 = q.lower(m6); |
840 |
assertEquals(m5, e2); |
841 |
|
842 |
Object e3 = q.lower(m1); |
843 |
assertNull(e3); |
844 |
|
845 |
Object e4 = q.lower(zero); |
846 |
assertNull(e4); |
847 |
|
848 |
} |
849 |
|
850 |
/** |
851 |
* higher returns next element |
852 |
*/ |
853 |
public void testDescendingHigher() { |
854 |
NavigableSet q = dset5(); |
855 |
Object e1 = q.higher(m3); |
856 |
assertEquals(m4, e1); |
857 |
|
858 |
Object e2 = q.higher(zero); |
859 |
assertEquals(m1, e2); |
860 |
|
861 |
Object e3 = q.higher(m5); |
862 |
assertNull(e3); |
863 |
|
864 |
Object e4 = q.higher(m6); |
865 |
assertNull(e4); |
866 |
|
867 |
} |
868 |
|
869 |
/** |
870 |
* floor returns preceding element |
871 |
*/ |
872 |
public void testDescendingFloor() { |
873 |
NavigableSet q = dset5(); |
874 |
Object e1 = q.floor(m3); |
875 |
assertEquals(m3, e1); |
876 |
|
877 |
Object e2 = q.floor(m6); |
878 |
assertEquals(m5, e2); |
879 |
|
880 |
Object e3 = q.floor(m1); |
881 |
assertEquals(m1, e3); |
882 |
|
883 |
Object e4 = q.floor(zero); |
884 |
assertNull(e4); |
885 |
|
886 |
} |
887 |
|
888 |
/** |
889 |
* ceiling returns next element |
890 |
*/ |
891 |
public void testDescendingCeiling() { |
892 |
NavigableSet q = dset5(); |
893 |
Object e1 = q.ceiling(m3); |
894 |
assertEquals(m3, e1); |
895 |
|
896 |
Object e2 = q.ceiling(zero); |
897 |
assertEquals(m1, e2); |
898 |
|
899 |
Object e3 = q.ceiling(m5); |
900 |
assertEquals(m5, e3); |
901 |
|
902 |
Object e4 = q.ceiling(m6); |
903 |
assertNull(e4); |
904 |
|
905 |
} |
906 |
|
907 |
/** |
908 |
* toArray contains all elements |
909 |
*/ |
910 |
public void testDescendingToArray() { |
911 |
NavigableSet q = populatedSet(SIZE); |
912 |
Object[] o = q.toArray(); |
913 |
Arrays.sort(o); |
914 |
for (int i = 0; i < o.length; i++) |
915 |
assertEquals(o[i], q.pollFirst()); |
916 |
} |
917 |
|
918 |
/** |
919 |
* toArray(a) contains all elements |
920 |
*/ |
921 |
public void testDescendingToArray2() { |
922 |
NavigableSet q = populatedSet(SIZE); |
923 |
Integer[] ints = new Integer[SIZE]; |
924 |
ints = (Integer[])q.toArray(ints); |
925 |
Arrays.sort(ints); |
926 |
for (int i = 0; i < ints.length; i++) |
927 |
assertEquals(ints[i], q.pollFirst()); |
928 |
} |
929 |
|
930 |
/** |
931 |
* iterator iterates through all elements |
932 |
*/ |
933 |
public void testDescendingIterator() { |
934 |
NavigableSet q = populatedSet(SIZE); |
935 |
int i = 0; |
936 |
Iterator it = q.iterator(); |
937 |
while (it.hasNext()) { |
938 |
assertTrue(q.contains(it.next())); |
939 |
++i; |
940 |
} |
941 |
assertEquals(i, SIZE); |
942 |
} |
943 |
|
944 |
/** |
945 |
* iterator of empty set has no elements |
946 |
*/ |
947 |
public void testDescendingEmptyIterator() { |
948 |
NavigableSet q = dset0(); |
949 |
int i = 0; |
950 |
Iterator it = q.iterator(); |
951 |
while (it.hasNext()) { |
952 |
assertTrue(q.contains(it.next())); |
953 |
++i; |
954 |
} |
955 |
assertEquals(i, 0); |
956 |
} |
957 |
|
958 |
/** |
959 |
* iterator.remove removes current element |
960 |
*/ |
961 |
public void testDescendingIteratorRemove () { |
962 |
final NavigableSet q = dset0(); |
963 |
q.add(new Integer(2)); |
964 |
q.add(new Integer(1)); |
965 |
q.add(new Integer(3)); |
966 |
|
967 |
Iterator it = q.iterator(); |
968 |
it.next(); |
969 |
it.remove(); |
970 |
|
971 |
it = q.iterator(); |
972 |
assertEquals(it.next(), new Integer(2)); |
973 |
assertEquals(it.next(), new Integer(3)); |
974 |
assertFalse(it.hasNext()); |
975 |
} |
976 |
|
977 |
|
978 |
/** |
979 |
* toString contains toStrings of elements |
980 |
*/ |
981 |
public void testDescendingToString() { |
982 |
NavigableSet q = populatedSet(SIZE); |
983 |
String s = q.toString(); |
984 |
for (int i = 0; i < SIZE; ++i) { |
985 |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
986 |
} |
987 |
} |
988 |
|
989 |
/** |
990 |
* A deserialized serialized set has same elements |
991 |
*/ |
992 |
public void testDescendingSerialization() throws Exception { |
993 |
NavigableSet q = populatedSet(SIZE); |
994 |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
995 |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
996 |
out.writeObject(q); |
997 |
out.close(); |
998 |
|
999 |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
1000 |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
1001 |
NavigableSet r = (NavigableSet)in.readObject(); |
1002 |
assertEquals(q.size(), r.size()); |
1003 |
while (!q.isEmpty()) |
1004 |
assertEquals(q.pollFirst(), r.pollFirst()); |
1005 |
} |
1006 |
|
1007 |
/** |
1008 |
* subSet returns set with keys in requested range |
1009 |
*/ |
1010 |
public void testDescendingSubSetContents() { |
1011 |
NavigableSet set = dset5(); |
1012 |
SortedSet sm = set.subSet(m2, m4); |
1013 |
assertEquals(m2, sm.first()); |
1014 |
assertEquals(m3, sm.last()); |
1015 |
assertEquals(2, sm.size()); |
1016 |
assertFalse(sm.contains(m1)); |
1017 |
assertTrue(sm.contains(m2)); |
1018 |
assertTrue(sm.contains(m3)); |
1019 |
assertFalse(sm.contains(m4)); |
1020 |
assertFalse(sm.contains(m5)); |
1021 |
Iterator i = sm.iterator(); |
1022 |
Object k; |
1023 |
k = (Integer)(i.next()); |
1024 |
assertEquals(m2, k); |
1025 |
k = (Integer)(i.next()); |
1026 |
assertEquals(m3, k); |
1027 |
assertFalse(i.hasNext()); |
1028 |
Iterator j = sm.iterator(); |
1029 |
j.next(); |
1030 |
j.remove(); |
1031 |
assertFalse(set.contains(m2)); |
1032 |
assertEquals(4, set.size()); |
1033 |
assertEquals(1, sm.size()); |
1034 |
assertEquals(m3, sm.first()); |
1035 |
assertEquals(m3, sm.last()); |
1036 |
assertTrue(sm.remove(m3)); |
1037 |
assertTrue(sm.isEmpty()); |
1038 |
assertEquals(3, set.size()); |
1039 |
} |
1040 |
|
1041 |
public void testDescendingSubSetContents2() { |
1042 |
NavigableSet set = dset5(); |
1043 |
SortedSet sm = set.subSet(m2, m3); |
1044 |
assertEquals(1, sm.size()); |
1045 |
assertEquals(m2, sm.first()); |
1046 |
assertEquals(m2, sm.last()); |
1047 |
assertFalse(sm.contains(m1)); |
1048 |
assertTrue(sm.contains(m2)); |
1049 |
assertFalse(sm.contains(m3)); |
1050 |
assertFalse(sm.contains(m4)); |
1051 |
assertFalse(sm.contains(m5)); |
1052 |
Iterator i = sm.iterator(); |
1053 |
Object k; |
1054 |
k = (Integer)(i.next()); |
1055 |
assertEquals(m2, k); |
1056 |
assertFalse(i.hasNext()); |
1057 |
Iterator j = sm.iterator(); |
1058 |
j.next(); |
1059 |
j.remove(); |
1060 |
assertFalse(set.contains(m2)); |
1061 |
assertEquals(4, set.size()); |
1062 |
assertEquals(0, sm.size()); |
1063 |
assertTrue(sm.isEmpty()); |
1064 |
assertFalse(sm.remove(m3)); |
1065 |
assertEquals(4, set.size()); |
1066 |
} |
1067 |
|
1068 |
/** |
1069 |
* headSet returns set with keys in requested range |
1070 |
*/ |
1071 |
public void testDescendingHeadSetContents() { |
1072 |
NavigableSet set = dset5(); |
1073 |
SortedSet sm = set.headSet(m4); |
1074 |
assertTrue(sm.contains(m1)); |
1075 |
assertTrue(sm.contains(m2)); |
1076 |
assertTrue(sm.contains(m3)); |
1077 |
assertFalse(sm.contains(m4)); |
1078 |
assertFalse(sm.contains(m5)); |
1079 |
Iterator i = sm.iterator(); |
1080 |
Object k; |
1081 |
k = (Integer)(i.next()); |
1082 |
assertEquals(m1, k); |
1083 |
k = (Integer)(i.next()); |
1084 |
assertEquals(m2, k); |
1085 |
k = (Integer)(i.next()); |
1086 |
assertEquals(m3, k); |
1087 |
assertFalse(i.hasNext()); |
1088 |
sm.clear(); |
1089 |
assertTrue(sm.isEmpty()); |
1090 |
assertEquals(2, set.size()); |
1091 |
assertEquals(m4, set.first()); |
1092 |
} |
1093 |
|
1094 |
/** |
1095 |
* tailSet returns set with keys in requested range |
1096 |
*/ |
1097 |
public void testDescendingTailSetContents() { |
1098 |
NavigableSet set = dset5(); |
1099 |
SortedSet sm = set.tailSet(m2); |
1100 |
assertFalse(sm.contains(m1)); |
1101 |
assertTrue(sm.contains(m2)); |
1102 |
assertTrue(sm.contains(m3)); |
1103 |
assertTrue(sm.contains(m4)); |
1104 |
assertTrue(sm.contains(m5)); |
1105 |
Iterator i = sm.iterator(); |
1106 |
Object k; |
1107 |
k = (Integer)(i.next()); |
1108 |
assertEquals(m2, k); |
1109 |
k = (Integer)(i.next()); |
1110 |
assertEquals(m3, k); |
1111 |
k = (Integer)(i.next()); |
1112 |
assertEquals(m4, k); |
1113 |
k = (Integer)(i.next()); |
1114 |
assertEquals(m5, k); |
1115 |
assertFalse(i.hasNext()); |
1116 |
|
1117 |
SortedSet ssm = sm.tailSet(m4); |
1118 |
assertEquals(m4, ssm.first()); |
1119 |
assertEquals(m5, ssm.last()); |
1120 |
assertTrue(ssm.remove(m4)); |
1121 |
assertEquals(1, ssm.size()); |
1122 |
assertEquals(3, sm.size()); |
1123 |
assertEquals(4, set.size()); |
1124 |
} |
1125 |
|
1126 |
} |