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