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/* |
2 |
* 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.*; |
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import java.io.*; |
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|
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public class TreeSubSetTest extends JSR166TestCase { |
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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(TreeSubSetTest.class); |
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} |
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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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int i = ((Integer)x).intValue(); |
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int j = ((Integer)y).intValue(); |
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if (i < j) return 1; |
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if (i > j) return -1; |
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return 0; |
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} |
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} |
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|
30 |
/** |
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* Create a set of given size containing consecutive |
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* Integers 0 ... n. |
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*/ |
34 |
private NavigableSet populatedSet(int n) { |
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TreeSet q = new TreeSet(); |
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assertTrue(q.isEmpty()); |
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|
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for (int i = n-1; i >= 0; i-=2) |
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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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TreeSet q = new TreeSet(); |
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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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private NavigableSet dset5() { |
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TreeSet q = new TreeSet(); |
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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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TreeSet set = new TreeSet(); |
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assertTrue(set.isEmpty()); |
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return set.tailSet(m1, false); |
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} |
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|
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private static NavigableSet dset0() { |
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TreeSet set = new TreeSet(); |
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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 |
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*/ |
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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 |
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*/ |
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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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*/ |
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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) {} |
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} |
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/** |
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* addAll of a collection with null elements throws NPE |
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*/ |
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public void testAddAll2() { |
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try { |
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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(); |
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} 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 { |
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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 |
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*/ |
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public void testAddAll5() { |
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try { |
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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()); |
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} |
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finally {} |
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} |
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|
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/** |
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* poll succeeds unless empty |
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*/ |
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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, ((Integer)q.pollFirst()).intValue()); |
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} |
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assertNull(q.pollFirst()); |
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} |
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|
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/** |
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* remove(x) removes x and returns true if present |
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*/ |
240 |
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))); |
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} |
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for (int i = 0; i < SIZE; i+=2) { |
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assertTrue(q.remove(new Integer(i))); |
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assertFalse(q.remove(new Integer(i+1))); |
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} |
249 |
assertTrue(q.isEmpty()); |
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} |
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|
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/** |
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* contains(x) reports true when elements added but not yet removed |
254 |
*/ |
255 |
public void testContains() { |
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NavigableSet q = populatedSet(SIZE); |
257 |
for (int i = 0; i < SIZE; ++i) { |
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assertTrue(q.contains(new Integer(i))); |
259 |
q.pollFirst(); |
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assertFalse(q.contains(new Integer(i))); |
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} |
262 |
} |
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|
264 |
/** |
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* clear removes all elements |
266 |
*/ |
267 |
public void testClear() { |
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NavigableSet q = populatedSet(SIZE); |
269 |
q.clear(); |
270 |
assertTrue(q.isEmpty()); |
271 |
assertEquals(0, q.size()); |
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q.add(new Integer(1)); |
273 |
assertFalse(q.isEmpty()); |
274 |
q.clear(); |
275 |
assertTrue(q.isEmpty()); |
276 |
} |
277 |
|
278 |
/** |
279 |
* containsAll(c) is true when c contains a subset of elements |
280 |
*/ |
281 |
public void testContainsAll() { |
282 |
NavigableSet q = populatedSet(SIZE); |
283 |
NavigableSet p = set0(); |
284 |
for (int i = 0; i < SIZE; ++i) { |
285 |
assertTrue(q.containsAll(p)); |
286 |
assertFalse(p.containsAll(q)); |
287 |
p.add(new Integer(i)); |
288 |
} |
289 |
assertTrue(p.containsAll(q)); |
290 |
} |
291 |
|
292 |
/** |
293 |
* retainAll(c) retains only those elements of c and reports true if changed |
294 |
*/ |
295 |
public void testRetainAll() { |
296 |
NavigableSet q = populatedSet(SIZE); |
297 |
NavigableSet p = populatedSet(SIZE); |
298 |
for (int i = 0; i < SIZE; ++i) { |
299 |
boolean changed = q.retainAll(p); |
300 |
if (i == 0) |
301 |
assertFalse(changed); |
302 |
else |
303 |
assertTrue(changed); |
304 |
|
305 |
assertTrue(q.containsAll(p)); |
306 |
assertEquals(SIZE-i, q.size()); |
307 |
p.pollFirst(); |
308 |
} |
309 |
} |
310 |
|
311 |
/** |
312 |
* removeAll(c) removes only those elements of c and reports true if changed |
313 |
*/ |
314 |
public void testRemoveAll() { |
315 |
for (int i = 1; i < SIZE; ++i) { |
316 |
NavigableSet q = populatedSet(SIZE); |
317 |
NavigableSet p = populatedSet(i); |
318 |
assertTrue(q.removeAll(p)); |
319 |
assertEquals(SIZE-i, q.size()); |
320 |
for (int j = 0; j < i; ++j) { |
321 |
Integer I = (Integer)(p.pollFirst()); |
322 |
assertFalse(q.contains(I)); |
323 |
} |
324 |
} |
325 |
} |
326 |
|
327 |
|
328 |
|
329 |
/** |
330 |
* lower returns preceding element |
331 |
*/ |
332 |
public void testLower() { |
333 |
NavigableSet q = set5(); |
334 |
Object e1 = q.lower(three); |
335 |
assertEquals(two, e1); |
336 |
|
337 |
Object e2 = q.lower(six); |
338 |
assertEquals(five, e2); |
339 |
|
340 |
Object e3 = q.lower(one); |
341 |
assertNull(e3); |
342 |
|
343 |
Object e4 = q.lower(zero); |
344 |
assertNull(e4); |
345 |
|
346 |
} |
347 |
|
348 |
/** |
349 |
* higher returns next element |
350 |
*/ |
351 |
public void testHigher() { |
352 |
NavigableSet q = set5(); |
353 |
Object e1 = q.higher(three); |
354 |
assertEquals(four, e1); |
355 |
|
356 |
Object e2 = q.higher(zero); |
357 |
assertEquals(one, e2); |
358 |
|
359 |
Object e3 = q.higher(five); |
360 |
assertNull(e3); |
361 |
|
362 |
Object e4 = q.higher(six); |
363 |
assertNull(e4); |
364 |
|
365 |
} |
366 |
|
367 |
/** |
368 |
* floor returns preceding element |
369 |
*/ |
370 |
public void testFloor() { |
371 |
NavigableSet q = set5(); |
372 |
Object e1 = q.floor(three); |
373 |
assertEquals(three, e1); |
374 |
|
375 |
Object e2 = q.floor(six); |
376 |
assertEquals(five, e2); |
377 |
|
378 |
Object e3 = q.floor(one); |
379 |
assertEquals(one, e3); |
380 |
|
381 |
Object e4 = q.floor(zero); |
382 |
assertNull(e4); |
383 |
|
384 |
} |
385 |
|
386 |
/** |
387 |
* ceiling returns next element |
388 |
*/ |
389 |
public void testCeiling() { |
390 |
NavigableSet q = set5(); |
391 |
Object e1 = q.ceiling(three); |
392 |
assertEquals(three, e1); |
393 |
|
394 |
Object e2 = q.ceiling(zero); |
395 |
assertEquals(one, e2); |
396 |
|
397 |
Object e3 = q.ceiling(five); |
398 |
assertEquals(five, e3); |
399 |
|
400 |
Object e4 = q.ceiling(six); |
401 |
assertNull(e4); |
402 |
|
403 |
} |
404 |
|
405 |
/** |
406 |
* toArray contains all elements |
407 |
*/ |
408 |
public void testToArray() { |
409 |
NavigableSet q = populatedSet(SIZE); |
410 |
Object[] o = q.toArray(); |
411 |
Arrays.sort(o); |
412 |
for (int i = 0; i < o.length; i++) |
413 |
assertEquals(o[i], q.pollFirst()); |
414 |
} |
415 |
|
416 |
/** |
417 |
* toArray(a) contains all elements |
418 |
*/ |
419 |
public void testToArray2() { |
420 |
NavigableSet q = populatedSet(SIZE); |
421 |
Integer[] ints = new Integer[SIZE]; |
422 |
ints = (Integer[])q.toArray(ints); |
423 |
Arrays.sort(ints); |
424 |
for (int i = 0; i < ints.length; i++) |
425 |
assertEquals(ints[i], q.pollFirst()); |
426 |
} |
427 |
|
428 |
/** |
429 |
* iterator iterates through all elements |
430 |
*/ |
431 |
public void testIterator() { |
432 |
NavigableSet q = populatedSet(SIZE); |
433 |
int i = 0; |
434 |
Iterator it = q.iterator(); |
435 |
while (it.hasNext()) { |
436 |
assertTrue(q.contains(it.next())); |
437 |
++i; |
438 |
} |
439 |
assertEquals(i, SIZE); |
440 |
} |
441 |
|
442 |
/** |
443 |
* iterator of empty set has no elements |
444 |
*/ |
445 |
public void testEmptyIterator() { |
446 |
NavigableSet q = set0(); |
447 |
int i = 0; |
448 |
Iterator it = q.iterator(); |
449 |
while (it.hasNext()) { |
450 |
assertTrue(q.contains(it.next())); |
451 |
++i; |
452 |
} |
453 |
assertEquals(i, 0); |
454 |
} |
455 |
|
456 |
/** |
457 |
* iterator.remove removes current element |
458 |
*/ |
459 |
public void testIteratorRemove () { |
460 |
final NavigableSet q = set0(); |
461 |
q.add(new Integer(2)); |
462 |
q.add(new Integer(1)); |
463 |
q.add(new Integer(3)); |
464 |
|
465 |
Iterator it = q.iterator(); |
466 |
it.next(); |
467 |
it.remove(); |
468 |
|
469 |
it = q.iterator(); |
470 |
assertEquals(it.next(), new Integer(2)); |
471 |
assertEquals(it.next(), new Integer(3)); |
472 |
assertFalse(it.hasNext()); |
473 |
} |
474 |
|
475 |
|
476 |
/** |
477 |
* toString contains toStrings of elements |
478 |
*/ |
479 |
public void testToString() { |
480 |
NavigableSet q = populatedSet(SIZE); |
481 |
String s = q.toString(); |
482 |
for (int i = 0; i < SIZE; ++i) { |
483 |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
484 |
} |
485 |
} |
486 |
|
487 |
/** |
488 |
* A deserialized serialized set has same elements |
489 |
*/ |
490 |
public void testSerialization() throws Exception { |
491 |
NavigableSet q = populatedSet(SIZE); |
492 |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
493 |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
494 |
out.writeObject(q); |
495 |
out.close(); |
496 |
|
497 |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
498 |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
499 |
NavigableSet r = (NavigableSet)in.readObject(); |
500 |
assertEquals(q.size(), r.size()); |
501 |
while (!q.isEmpty()) |
502 |
assertEquals(q.pollFirst(), r.pollFirst()); |
503 |
} |
504 |
|
505 |
/** |
506 |
* subSet returns set with keys in requested range |
507 |
*/ |
508 |
public void testSubSetContents() { |
509 |
NavigableSet set = set5(); |
510 |
SortedSet sm = set.subSet(two, four); |
511 |
assertEquals(two, sm.first()); |
512 |
assertEquals(three, sm.last()); |
513 |
assertEquals(2, sm.size()); |
514 |
assertFalse(sm.contains(one)); |
515 |
assertTrue(sm.contains(two)); |
516 |
assertTrue(sm.contains(three)); |
517 |
assertFalse(sm.contains(four)); |
518 |
assertFalse(sm.contains(five)); |
519 |
Iterator i = sm.iterator(); |
520 |
Object k; |
521 |
k = (Integer)(i.next()); |
522 |
assertEquals(two, k); |
523 |
k = (Integer)(i.next()); |
524 |
assertEquals(three, k); |
525 |
assertFalse(i.hasNext()); |
526 |
Iterator j = sm.iterator(); |
527 |
j.next(); |
528 |
j.remove(); |
529 |
assertFalse(set.contains(two)); |
530 |
assertEquals(4, set.size()); |
531 |
assertEquals(1, sm.size()); |
532 |
assertEquals(three, sm.first()); |
533 |
assertEquals(three, sm.last()); |
534 |
assertTrue(sm.remove(three)); |
535 |
assertTrue(sm.isEmpty()); |
536 |
assertEquals(3, set.size()); |
537 |
} |
538 |
|
539 |
public void testSubSetContents2() { |
540 |
NavigableSet set = set5(); |
541 |
SortedSet sm = set.subSet(two, three); |
542 |
assertEquals(1, sm.size()); |
543 |
assertEquals(two, sm.first()); |
544 |
assertEquals(two, sm.last()); |
545 |
assertFalse(sm.contains(one)); |
546 |
assertTrue(sm.contains(two)); |
547 |
assertFalse(sm.contains(three)); |
548 |
assertFalse(sm.contains(four)); |
549 |
assertFalse(sm.contains(five)); |
550 |
Iterator i = sm.iterator(); |
551 |
Object k; |
552 |
k = (Integer)(i.next()); |
553 |
assertEquals(two, k); |
554 |
assertFalse(i.hasNext()); |
555 |
Iterator j = sm.iterator(); |
556 |
j.next(); |
557 |
j.remove(); |
558 |
assertFalse(set.contains(two)); |
559 |
assertEquals(4, set.size()); |
560 |
assertEquals(0, sm.size()); |
561 |
assertTrue(sm.isEmpty()); |
562 |
assertFalse(sm.remove(three)); |
563 |
assertEquals(4, set.size()); |
564 |
} |
565 |
|
566 |
/** |
567 |
* headSet returns set with keys in requested range |
568 |
*/ |
569 |
public void testHeadSetContents() { |
570 |
NavigableSet set = set5(); |
571 |
SortedSet sm = set.headSet(four); |
572 |
assertTrue(sm.contains(one)); |
573 |
assertTrue(sm.contains(two)); |
574 |
assertTrue(sm.contains(three)); |
575 |
assertFalse(sm.contains(four)); |
576 |
assertFalse(sm.contains(five)); |
577 |
Iterator i = sm.iterator(); |
578 |
Object k; |
579 |
k = (Integer)(i.next()); |
580 |
assertEquals(one, k); |
581 |
k = (Integer)(i.next()); |
582 |
assertEquals(two, k); |
583 |
k = (Integer)(i.next()); |
584 |
assertEquals(three, k); |
585 |
assertFalse(i.hasNext()); |
586 |
sm.clear(); |
587 |
assertTrue(sm.isEmpty()); |
588 |
assertEquals(2, set.size()); |
589 |
assertEquals(four, set.first()); |
590 |
} |
591 |
|
592 |
/** |
593 |
* tailSet returns set with keys in requested range |
594 |
*/ |
595 |
public void testTailSetContents() { |
596 |
NavigableSet set = set5(); |
597 |
SortedSet sm = set.tailSet(two); |
598 |
assertFalse(sm.contains(one)); |
599 |
assertTrue(sm.contains(two)); |
600 |
assertTrue(sm.contains(three)); |
601 |
assertTrue(sm.contains(four)); |
602 |
assertTrue(sm.contains(five)); |
603 |
Iterator i = sm.iterator(); |
604 |
Object k; |
605 |
k = (Integer)(i.next()); |
606 |
assertEquals(two, k); |
607 |
k = (Integer)(i.next()); |
608 |
assertEquals(three, k); |
609 |
k = (Integer)(i.next()); |
610 |
assertEquals(four, k); |
611 |
k = (Integer)(i.next()); |
612 |
assertEquals(five, k); |
613 |
assertFalse(i.hasNext()); |
614 |
|
615 |
SortedSet ssm = sm.tailSet(four); |
616 |
assertEquals(four, ssm.first()); |
617 |
assertEquals(five, ssm.last()); |
618 |
assertTrue(ssm.remove(four)); |
619 |
assertEquals(1, ssm.size()); |
620 |
assertEquals(3, sm.size()); |
621 |
assertEquals(4, set.size()); |
622 |
} |
623 |
|
624 |
/** |
625 |
* size changes when elements added and removed |
626 |
*/ |
627 |
public void testDescendingSize() { |
628 |
NavigableSet q = populatedSet(SIZE); |
629 |
for (int i = 0; i < SIZE; ++i) { |
630 |
assertEquals(SIZE-i, q.size()); |
631 |
q.pollFirst(); |
632 |
} |
633 |
for (int i = 0; i < SIZE; ++i) { |
634 |
assertEquals(i, q.size()); |
635 |
q.add(new Integer(i)); |
636 |
} |
637 |
} |
638 |
|
639 |
/** |
640 |
* Add of comparable element succeeds |
641 |
*/ |
642 |
public void testDescendingAdd() { |
643 |
NavigableSet q = dset0(); |
644 |
assertTrue(q.add(m6)); |
645 |
} |
646 |
|
647 |
/** |
648 |
* Add of duplicate element fails |
649 |
*/ |
650 |
public void testDescendingAddDup() { |
651 |
NavigableSet q = dset0(); |
652 |
assertTrue(q.add(m6)); |
653 |
assertFalse(q.add(m6)); |
654 |
} |
655 |
|
656 |
/** |
657 |
* Add of non-Comparable throws CCE |
658 |
*/ |
659 |
public void testDescendingAddNonComparable() { |
660 |
try { |
661 |
NavigableSet q = dset0(); |
662 |
q.add(new Object()); |
663 |
q.add(new Object()); |
664 |
q.add(new Object()); |
665 |
shouldThrow(); |
666 |
} catch (ClassCastException success) {} |
667 |
} |
668 |
|
669 |
|
670 |
/** |
671 |
* addAll(null) throws NPE |
672 |
*/ |
673 |
public void testDescendingAddAll1() { |
674 |
try { |
675 |
NavigableSet q = dset0(); |
676 |
q.addAll(null); |
677 |
shouldThrow(); |
678 |
} catch (NullPointerException success) {} |
679 |
} |
680 |
/** |
681 |
* addAll of a collection with null elements throws NPE |
682 |
*/ |
683 |
public void testDescendingAddAll2() { |
684 |
try { |
685 |
NavigableSet q = dset0(); |
686 |
Integer[] ints = new Integer[SIZE]; |
687 |
q.addAll(Arrays.asList(ints)); |
688 |
shouldThrow(); |
689 |
} catch (NullPointerException success) {} |
690 |
} |
691 |
/** |
692 |
* addAll of a collection with any null elements throws NPE after |
693 |
* possibly adding some elements |
694 |
*/ |
695 |
public void testDescendingAddAll3() { |
696 |
try { |
697 |
NavigableSet q = dset0(); |
698 |
Integer[] ints = new Integer[SIZE]; |
699 |
for (int i = 0; i < SIZE-1; ++i) |
700 |
ints[i] = new Integer(i+SIZE); |
701 |
q.addAll(Arrays.asList(ints)); |
702 |
shouldThrow(); |
703 |
} catch (NullPointerException success) {} |
704 |
} |
705 |
|
706 |
/** |
707 |
* Set contains all elements of successful addAll |
708 |
*/ |
709 |
public void testDescendingAddAll5() { |
710 |
Integer[] empty = new Integer[0]; |
711 |
Integer[] ints = new Integer[SIZE]; |
712 |
for (int i = 0; i < SIZE; ++i) |
713 |
ints[i] = new Integer(SIZE-1- i); |
714 |
NavigableSet q = dset0(); |
715 |
assertFalse(q.addAll(Arrays.asList(empty))); |
716 |
assertTrue(q.addAll(Arrays.asList(ints))); |
717 |
for (int i = 0; i < SIZE; ++i) |
718 |
assertEquals(new Integer(i), q.pollFirst()); |
719 |
} |
720 |
|
721 |
/** |
722 |
* poll succeeds unless empty |
723 |
*/ |
724 |
public void testDescendingPoll() { |
725 |
NavigableSet q = populatedSet(SIZE); |
726 |
for (int i = 0; i < SIZE; ++i) { |
727 |
assertEquals(i, ((Integer)q.pollFirst()).intValue()); |
728 |
} |
729 |
assertNull(q.pollFirst()); |
730 |
} |
731 |
|
732 |
/** |
733 |
* remove(x) removes x and returns true if present |
734 |
*/ |
735 |
public void testDescendingRemoveElement() { |
736 |
NavigableSet q = populatedSet(SIZE); |
737 |
for (int i = 1; i < SIZE; i+=2) { |
738 |
assertTrue(q.remove(new Integer(i))); |
739 |
} |
740 |
for (int i = 0; i < SIZE; i+=2) { |
741 |
assertTrue(q.remove(new Integer(i))); |
742 |
assertFalse(q.remove(new Integer(i+1))); |
743 |
} |
744 |
assertTrue(q.isEmpty()); |
745 |
} |
746 |
|
747 |
/** |
748 |
* contains(x) reports true when elements added but not yet removed |
749 |
*/ |
750 |
public void testDescendingContains() { |
751 |
NavigableSet q = populatedSet(SIZE); |
752 |
for (int i = 0; i < SIZE; ++i) { |
753 |
assertTrue(q.contains(new Integer(i))); |
754 |
q.pollFirst(); |
755 |
assertFalse(q.contains(new Integer(i))); |
756 |
} |
757 |
} |
758 |
|
759 |
/** |
760 |
* clear removes all elements |
761 |
*/ |
762 |
public void testDescendingClear() { |
763 |
NavigableSet q = populatedSet(SIZE); |
764 |
q.clear(); |
765 |
assertTrue(q.isEmpty()); |
766 |
assertEquals(0, q.size()); |
767 |
q.add(new Integer(1)); |
768 |
assertFalse(q.isEmpty()); |
769 |
q.clear(); |
770 |
assertTrue(q.isEmpty()); |
771 |
} |
772 |
|
773 |
/** |
774 |
* containsAll(c) is true when c contains a subset of elements |
775 |
*/ |
776 |
public void testDescendingContainsAll() { |
777 |
NavigableSet q = populatedSet(SIZE); |
778 |
NavigableSet p = dset0(); |
779 |
for (int i = 0; i < SIZE; ++i) { |
780 |
assertTrue(q.containsAll(p)); |
781 |
assertFalse(p.containsAll(q)); |
782 |
p.add(new Integer(i)); |
783 |
} |
784 |
assertTrue(p.containsAll(q)); |
785 |
} |
786 |
|
787 |
/** |
788 |
* retainAll(c) retains only those elements of c and reports true if changed |
789 |
*/ |
790 |
public void testDescendingRetainAll() { |
791 |
NavigableSet q = populatedSet(SIZE); |
792 |
NavigableSet p = populatedSet(SIZE); |
793 |
for (int i = 0; i < SIZE; ++i) { |
794 |
boolean changed = q.retainAll(p); |
795 |
if (i == 0) |
796 |
assertFalse(changed); |
797 |
else |
798 |
assertTrue(changed); |
799 |
|
800 |
assertTrue(q.containsAll(p)); |
801 |
assertEquals(SIZE-i, q.size()); |
802 |
p.pollFirst(); |
803 |
} |
804 |
} |
805 |
|
806 |
/** |
807 |
* removeAll(c) removes only those elements of c and reports true if changed |
808 |
*/ |
809 |
public void testDescendingRemoveAll() { |
810 |
for (int i = 1; i < SIZE; ++i) { |
811 |
NavigableSet q = populatedSet(SIZE); |
812 |
NavigableSet p = populatedSet(i); |
813 |
assertTrue(q.removeAll(p)); |
814 |
assertEquals(SIZE-i, q.size()); |
815 |
for (int j = 0; j < i; ++j) { |
816 |
Integer I = (Integer)(p.pollFirst()); |
817 |
assertFalse(q.contains(I)); |
818 |
} |
819 |
} |
820 |
} |
821 |
|
822 |
|
823 |
|
824 |
/** |
825 |
* lower returns preceding element |
826 |
*/ |
827 |
public void testDescendingLower() { |
828 |
NavigableSet q = dset5(); |
829 |
Object e1 = q.lower(m3); |
830 |
assertEquals(m2, e1); |
831 |
|
832 |
Object e2 = q.lower(m6); |
833 |
assertEquals(m5, e2); |
834 |
|
835 |
Object e3 = q.lower(m1); |
836 |
assertNull(e3); |
837 |
|
838 |
Object e4 = q.lower(zero); |
839 |
assertNull(e4); |
840 |
|
841 |
} |
842 |
|
843 |
/** |
844 |
* higher returns next element |
845 |
*/ |
846 |
public void testDescendingHigher() { |
847 |
NavigableSet q = dset5(); |
848 |
Object e1 = q.higher(m3); |
849 |
assertEquals(m4, e1); |
850 |
|
851 |
Object e2 = q.higher(zero); |
852 |
assertEquals(m1, e2); |
853 |
|
854 |
Object e3 = q.higher(m5); |
855 |
assertNull(e3); |
856 |
|
857 |
Object e4 = q.higher(m6); |
858 |
assertNull(e4); |
859 |
|
860 |
} |
861 |
|
862 |
/** |
863 |
* floor returns preceding element |
864 |
*/ |
865 |
public void testDescendingFloor() { |
866 |
NavigableSet q = dset5(); |
867 |
Object e1 = q.floor(m3); |
868 |
assertEquals(m3, e1); |
869 |
|
870 |
Object e2 = q.floor(m6); |
871 |
assertEquals(m5, e2); |
872 |
|
873 |
Object e3 = q.floor(m1); |
874 |
assertEquals(m1, e3); |
875 |
|
876 |
Object e4 = q.floor(zero); |
877 |
assertNull(e4); |
878 |
|
879 |
} |
880 |
|
881 |
/** |
882 |
* ceiling returns next element |
883 |
*/ |
884 |
public void testDescendingCeiling() { |
885 |
NavigableSet q = dset5(); |
886 |
Object e1 = q.ceiling(m3); |
887 |
assertEquals(m3, e1); |
888 |
|
889 |
Object e2 = q.ceiling(zero); |
890 |
assertEquals(m1, e2); |
891 |
|
892 |
Object e3 = q.ceiling(m5); |
893 |
assertEquals(m5, e3); |
894 |
|
895 |
Object e4 = q.ceiling(m6); |
896 |
assertNull(e4); |
897 |
|
898 |
} |
899 |
|
900 |
/** |
901 |
* toArray contains all elements |
902 |
*/ |
903 |
public void testDescendingToArray() { |
904 |
NavigableSet q = populatedSet(SIZE); |
905 |
Object[] o = q.toArray(); |
906 |
Arrays.sort(o); |
907 |
for (int i = 0; i < o.length; i++) |
908 |
assertEquals(o[i], q.pollFirst()); |
909 |
} |
910 |
|
911 |
/** |
912 |
* toArray(a) contains all elements |
913 |
*/ |
914 |
public void testDescendingToArray2() { |
915 |
NavigableSet q = populatedSet(SIZE); |
916 |
Integer[] ints = new Integer[SIZE]; |
917 |
ints = (Integer[])q.toArray(ints); |
918 |
Arrays.sort(ints); |
919 |
for (int i = 0; i < ints.length; i++) |
920 |
assertEquals(ints[i], q.pollFirst()); |
921 |
} |
922 |
|
923 |
/** |
924 |
* iterator iterates through all elements |
925 |
*/ |
926 |
public void testDescendingIterator() { |
927 |
NavigableSet q = populatedSet(SIZE); |
928 |
int i = 0; |
929 |
Iterator it = q.iterator(); |
930 |
while (it.hasNext()) { |
931 |
assertTrue(q.contains(it.next())); |
932 |
++i; |
933 |
} |
934 |
assertEquals(i, SIZE); |
935 |
} |
936 |
|
937 |
/** |
938 |
* iterator of empty set has no elements |
939 |
*/ |
940 |
public void testDescendingEmptyIterator() { |
941 |
NavigableSet q = dset0(); |
942 |
int i = 0; |
943 |
Iterator it = q.iterator(); |
944 |
while (it.hasNext()) { |
945 |
assertTrue(q.contains(it.next())); |
946 |
++i; |
947 |
} |
948 |
assertEquals(i, 0); |
949 |
} |
950 |
|
951 |
/** |
952 |
* iterator.remove removes current element |
953 |
*/ |
954 |
public void testDescendingIteratorRemove () { |
955 |
final NavigableSet q = dset0(); |
956 |
q.add(new Integer(2)); |
957 |
q.add(new Integer(1)); |
958 |
q.add(new Integer(3)); |
959 |
|
960 |
Iterator it = q.iterator(); |
961 |
it.next(); |
962 |
it.remove(); |
963 |
|
964 |
it = q.iterator(); |
965 |
assertEquals(it.next(), new Integer(2)); |
966 |
assertEquals(it.next(), new Integer(3)); |
967 |
assertFalse(it.hasNext()); |
968 |
} |
969 |
|
970 |
|
971 |
/** |
972 |
* toString contains toStrings of elements |
973 |
*/ |
974 |
public void testDescendingToString() { |
975 |
NavigableSet q = populatedSet(SIZE); |
976 |
String s = q.toString(); |
977 |
for (int i = 0; i < SIZE; ++i) { |
978 |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
979 |
} |
980 |
} |
981 |
|
982 |
/** |
983 |
* A deserialized serialized set has same elements |
984 |
*/ |
985 |
public void testDescendingSerialization() throws Exception { |
986 |
NavigableSet q = populatedSet(SIZE); |
987 |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
988 |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
989 |
out.writeObject(q); |
990 |
out.close(); |
991 |
|
992 |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
993 |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
994 |
NavigableSet r = (NavigableSet)in.readObject(); |
995 |
assertEquals(q.size(), r.size()); |
996 |
while (!q.isEmpty()) |
997 |
assertEquals(q.pollFirst(), r.pollFirst()); |
998 |
} |
999 |
|
1000 |
/** |
1001 |
* subSet returns set with keys in requested range |
1002 |
*/ |
1003 |
public void testDescendingSubSetContents() { |
1004 |
NavigableSet set = dset5(); |
1005 |
SortedSet sm = set.subSet(m2, m4); |
1006 |
assertEquals(m2, sm.first()); |
1007 |
assertEquals(m3, sm.last()); |
1008 |
assertEquals(2, sm.size()); |
1009 |
assertFalse(sm.contains(m1)); |
1010 |
assertTrue(sm.contains(m2)); |
1011 |
assertTrue(sm.contains(m3)); |
1012 |
assertFalse(sm.contains(m4)); |
1013 |
assertFalse(sm.contains(m5)); |
1014 |
Iterator i = sm.iterator(); |
1015 |
Object k; |
1016 |
k = (Integer)(i.next()); |
1017 |
assertEquals(m2, k); |
1018 |
k = (Integer)(i.next()); |
1019 |
assertEquals(m3, k); |
1020 |
assertFalse(i.hasNext()); |
1021 |
Iterator j = sm.iterator(); |
1022 |
j.next(); |
1023 |
j.remove(); |
1024 |
assertFalse(set.contains(m2)); |
1025 |
assertEquals(4, set.size()); |
1026 |
assertEquals(1, sm.size()); |
1027 |
assertEquals(m3, sm.first()); |
1028 |
assertEquals(m3, sm.last()); |
1029 |
assertTrue(sm.remove(m3)); |
1030 |
assertTrue(sm.isEmpty()); |
1031 |
assertEquals(3, set.size()); |
1032 |
} |
1033 |
|
1034 |
public void testDescendingSubSetContents2() { |
1035 |
NavigableSet set = dset5(); |
1036 |
SortedSet sm = set.subSet(m2, m3); |
1037 |
assertEquals(1, sm.size()); |
1038 |
assertEquals(m2, sm.first()); |
1039 |
assertEquals(m2, sm.last()); |
1040 |
assertFalse(sm.contains(m1)); |
1041 |
assertTrue(sm.contains(m2)); |
1042 |
assertFalse(sm.contains(m3)); |
1043 |
assertFalse(sm.contains(m4)); |
1044 |
assertFalse(sm.contains(m5)); |
1045 |
Iterator i = sm.iterator(); |
1046 |
Object k; |
1047 |
k = (Integer)(i.next()); |
1048 |
assertEquals(m2, k); |
1049 |
assertFalse(i.hasNext()); |
1050 |
Iterator j = sm.iterator(); |
1051 |
j.next(); |
1052 |
j.remove(); |
1053 |
assertFalse(set.contains(m2)); |
1054 |
assertEquals(4, set.size()); |
1055 |
assertEquals(0, sm.size()); |
1056 |
assertTrue(sm.isEmpty()); |
1057 |
assertFalse(sm.remove(m3)); |
1058 |
assertEquals(4, set.size()); |
1059 |
} |
1060 |
|
1061 |
/** |
1062 |
* headSet returns set with keys in requested range |
1063 |
*/ |
1064 |
public void testDescendingHeadSetContents() { |
1065 |
NavigableSet set = dset5(); |
1066 |
SortedSet sm = set.headSet(m4); |
1067 |
assertTrue(sm.contains(m1)); |
1068 |
assertTrue(sm.contains(m2)); |
1069 |
assertTrue(sm.contains(m3)); |
1070 |
assertFalse(sm.contains(m4)); |
1071 |
assertFalse(sm.contains(m5)); |
1072 |
Iterator i = sm.iterator(); |
1073 |
Object k; |
1074 |
k = (Integer)(i.next()); |
1075 |
assertEquals(m1, k); |
1076 |
k = (Integer)(i.next()); |
1077 |
assertEquals(m2, k); |
1078 |
k = (Integer)(i.next()); |
1079 |
assertEquals(m3, k); |
1080 |
assertFalse(i.hasNext()); |
1081 |
sm.clear(); |
1082 |
assertTrue(sm.isEmpty()); |
1083 |
assertEquals(2, set.size()); |
1084 |
assertEquals(m4, set.first()); |
1085 |
} |
1086 |
|
1087 |
/** |
1088 |
* tailSet returns set with keys in requested range |
1089 |
*/ |
1090 |
public void testDescendingTailSetContents() { |
1091 |
NavigableSet set = dset5(); |
1092 |
SortedSet sm = set.tailSet(m2); |
1093 |
assertFalse(sm.contains(m1)); |
1094 |
assertTrue(sm.contains(m2)); |
1095 |
assertTrue(sm.contains(m3)); |
1096 |
assertTrue(sm.contains(m4)); |
1097 |
assertTrue(sm.contains(m5)); |
1098 |
Iterator i = sm.iterator(); |
1099 |
Object k; |
1100 |
k = (Integer)(i.next()); |
1101 |
assertEquals(m2, k); |
1102 |
k = (Integer)(i.next()); |
1103 |
assertEquals(m3, k); |
1104 |
k = (Integer)(i.next()); |
1105 |
assertEquals(m4, k); |
1106 |
k = (Integer)(i.next()); |
1107 |
assertEquals(m5, k); |
1108 |
assertFalse(i.hasNext()); |
1109 |
|
1110 |
SortedSet ssm = sm.tailSet(m4); |
1111 |
assertEquals(m4, ssm.first()); |
1112 |
assertEquals(m5, ssm.last()); |
1113 |
assertTrue(ssm.remove(m4)); |
1114 |
assertEquals(1, ssm.size()); |
1115 |
assertEquals(3, sm.size()); |
1116 |
assertEquals(4, set.size()); |
1117 |
} |
1118 |
|
1119 |
} |