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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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* http://creativecommons.org/publicdomain/zero/1.0/ |
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*/ |
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import junit.framework.*; |
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import java.util.*; |
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import java.util.concurrent.*; |
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import java.io.*; |
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import java.util.Arrays; |
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import java.util.Comparator; |
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import java.util.Iterator; |
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import java.util.NavigableSet; |
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import java.util.Set; |
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import java.util.SortedSet; |
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import java.util.TreeSet; |
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|
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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public class TreeSubSetTest 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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junit.textui.TestRunner.run(suite()); |
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} |
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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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/** |
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* Create a set of given size containing consecutive |
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* Returns a new 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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TreeSet q = new TreeSet(); |
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private NavigableSet<Integer> populatedSet(int n) { |
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TreeSet<Integer> q = new TreeSet<Integer>(); |
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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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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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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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} |
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|
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/** |
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* Create set of first 5 ints |
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* Returns a new 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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assertEquals(0, set0().size()); |
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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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} 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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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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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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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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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 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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for (int i = 1; i < SIZE; i += 2) { |
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assertTrue(q.contains(i)); |
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assertTrue(q.remove(i)); |
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assertFalse(q.contains(i)); |
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assertTrue(q.contains(i-1)); |
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} |
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for (int i = 0; i < SIZE; i += 2) { |
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assertTrue(q.contains(i)); |
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assertTrue(q.remove(i)); |
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assertFalse(q.contains(i)); |
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assertFalse(q.remove(i+1)); |
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assertFalse(q.contains(i+1)); |
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} |
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assertTrue(q.isEmpty()); |
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} |
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assertTrue(q.removeAll(p)); |
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assertEquals(SIZE-i, q.size()); |
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for (int j = 0; j < i; ++j) { |
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Integer I = (Integer)(p.pollFirst()); |
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assertFalse(q.contains(I)); |
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Integer x = (Integer)(p.pollFirst()); |
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assertFalse(q.contains(x)); |
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} |
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} |
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} |
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|
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|
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/** |
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* lower returns preceding element |
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*/ |
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|
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Object e4 = q.lower(zero); |
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assertNull(e4); |
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|
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} |
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/** |
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|
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Object e4 = q.higher(six); |
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assertNull(e4); |
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|
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} |
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|
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/** |
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|
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Object e4 = q.floor(zero); |
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assertNull(e4); |
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|
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} |
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|
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/** |
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|
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Object e4 = q.ceiling(six); |
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assertNull(e4); |
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|
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} |
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|
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/** |
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* toArray contains all elements |
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* toArray contains all elements in sorted order |
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*/ |
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public void testToArray() { |
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NavigableSet q = populatedSet(SIZE); |
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Object[] o = q.toArray(); |
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Arrays.sort(o); |
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for (int i = 0; i < o.length; i++) |
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assertEquals(o[i], q.pollFirst()); |
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assertSame(o[i], q.pollFirst()); |
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} |
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|
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/** |
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* toArray(a) contains all elements |
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* toArray(a) contains all elements in sorted order |
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*/ |
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public void testToArray2() { |
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NavigableSet q = populatedSet(SIZE); |
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NavigableSet<Integer> q = populatedSet(SIZE); |
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Integer[] ints = new Integer[SIZE]; |
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ints = (Integer[])q.toArray(ints); |
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Arrays.sort(ints); |
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Integer[] array = q.toArray(ints); |
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assertSame(ints, array); |
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for (int i = 0; i < ints.length; i++) |
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assertEquals(ints[i], q.pollFirst()); |
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assertSame(ints[i], q.pollFirst()); |
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} |
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|
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/** |
428 |
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*/ |
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public void testIterator() { |
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NavigableSet q = populatedSet(SIZE); |
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int i = 0; |
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Iterator it = q.iterator(); |
432 |
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while (it.hasNext()) { |
432 |
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int i; |
433 |
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for (i = 0; it.hasNext(); i++) |
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assertTrue(q.contains(it.next())); |
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++i; |
431 |
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} |
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assertEquals(i, SIZE); |
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assertIteratorExhausted(it); |
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} |
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|
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/** |
440 |
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* iterator of empty set has no elements |
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*/ |
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public void testEmptyIterator() { |
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NavigableSet q = set0(); |
440 |
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int i = 0; |
441 |
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Iterator it = q.iterator(); |
442 |
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while (it.hasNext()) { |
443 |
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assertTrue(q.contains(it.next())); |
444 |
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++i; |
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} |
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assertEquals(i, 0); |
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assertIteratorExhausted(set0().iterator()); |
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} |
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|
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/** |
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* iterator.remove removes current element |
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*/ |
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public void testIteratorRemove () { |
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> |
public void testIteratorRemove() { |
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final NavigableSet q = set0(); |
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q.add(new Integer(2)); |
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q.add(new Integer(1)); |
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it.remove(); |
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it = q.iterator(); |
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assertEquals(it.next(), 2); |
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assertEquals(it.next(), 3); |
460 |
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assertEquals(2, it.next()); |
461 |
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assertEquals(3, it.next()); |
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assertFalse(it.hasNext()); |
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} |
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|
468 |
– |
|
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/** |
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* toString contains toStrings of elements |
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*/ |
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NavigableSet q = populatedSet(SIZE); |
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String s = q.toString(); |
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for (int i = 0; i < SIZE; ++i) { |
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assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
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assertTrue(s.contains(String.valueOf(i))); |
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} |
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} |
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|
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* A deserialized serialized set has same elements |
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*/ |
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public void testSerialization() throws Exception { |
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NavigableSet q = populatedSet(SIZE); |
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ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
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ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
483 |
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out.writeObject(q); |
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out.close(); |
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|
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ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
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ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
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NavigableSet r = (NavigableSet)in.readObject(); |
489 |
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assertEquals(q.size(), r.size()); |
490 |
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while (!q.isEmpty()) |
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assertEquals(q.pollFirst(), r.pollFirst()); |
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NavigableSet x = populatedSet(SIZE); |
481 |
> |
NavigableSet y = serialClone(x); |
482 |
> |
|
483 |
> |
assertNotSame(x, y); |
484 |
> |
assertEquals(x.size(), y.size()); |
485 |
> |
assertEquals(x, y); |
486 |
> |
assertEquals(y, x); |
487 |
> |
while (!x.isEmpty()) { |
488 |
> |
assertFalse(y.isEmpty()); |
489 |
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assertEquals(x.pollFirst(), y.pollFirst()); |
490 |
> |
} |
491 |
> |
assertTrue(y.isEmpty()); |
492 |
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} |
493 |
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|
494 |
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/** |
655 |
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} catch (ClassCastException success) {} |
656 |
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} |
657 |
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|
662 |
– |
|
658 |
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/** |
659 |
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* addAll(null) throws NPE |
660 |
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*/ |
665 |
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shouldThrow(); |
666 |
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} catch (NullPointerException success) {} |
667 |
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} |
668 |
+ |
|
669 |
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/** |
670 |
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* addAll of a collection with null elements throws NPE |
671 |
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*/ |
677 |
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shouldThrow(); |
678 |
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} catch (NullPointerException success) {} |
679 |
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} |
680 |
+ |
|
681 |
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/** |
682 |
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* addAll of a collection with any null elements throws NPE after |
683 |
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* possibly adding some elements |
724 |
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*/ |
725 |
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public void testDescendingRemoveElement() { |
726 |
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NavigableSet q = populatedSet(SIZE); |
727 |
< |
for (int i = 1; i < SIZE; i+=2) { |
727 |
> |
for (int i = 1; i < SIZE; i += 2) { |
728 |
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assertTrue(q.remove(new Integer(i))); |
729 |
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} |
730 |
< |
for (int i = 0; i < SIZE; i+=2) { |
730 |
> |
for (int i = 0; i < SIZE; i += 2) { |
731 |
|
assertTrue(q.remove(new Integer(i))); |
732 |
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assertFalse(q.remove(new Integer(i+1))); |
733 |
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} |
803 |
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assertTrue(q.removeAll(p)); |
804 |
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assertEquals(SIZE-i, q.size()); |
805 |
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for (int j = 0; j < i; ++j) { |
806 |
< |
Integer I = (Integer)(p.pollFirst()); |
807 |
< |
assertFalse(q.contains(I)); |
806 |
> |
Integer x = (Integer)(p.pollFirst()); |
807 |
> |
assertFalse(q.contains(x)); |
808 |
|
} |
809 |
|
} |
810 |
|
} |
811 |
|
|
815 |
– |
|
816 |
– |
|
812 |
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/** |
813 |
|
* lower returns preceding element |
814 |
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*/ |
825 |
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|
826 |
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Object e4 = q.lower(zero); |
827 |
|
assertNull(e4); |
833 |
– |
|
828 |
|
} |
829 |
|
|
830 |
|
/** |
843 |
|
|
844 |
|
Object e4 = q.higher(m6); |
845 |
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assertNull(e4); |
852 |
– |
|
846 |
|
} |
847 |
|
|
848 |
|
/** |
861 |
|
|
862 |
|
Object e4 = q.floor(zero); |
863 |
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assertNull(e4); |
871 |
– |
|
864 |
|
} |
865 |
|
|
866 |
|
/** |
879 |
|
|
880 |
|
Object e4 = q.ceiling(m6); |
881 |
|
assertNull(e4); |
890 |
– |
|
882 |
|
} |
883 |
|
|
884 |
|
/** |
898 |
|
public void testDescendingToArray2() { |
899 |
|
NavigableSet q = populatedSet(SIZE); |
900 |
|
Integer[] ints = new Integer[SIZE]; |
901 |
< |
ints = (Integer[])q.toArray(ints); |
901 |
> |
assertSame(ints, q.toArray(ints)); |
902 |
|
Arrays.sort(ints); |
903 |
|
for (int i = 0; i < ints.length; i++) |
904 |
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assertEquals(ints[i], q.pollFirst()); |
929 |
|
assertTrue(q.contains(it.next())); |
930 |
|
++i; |
931 |
|
} |
932 |
< |
assertEquals(i, 0); |
932 |
> |
assertEquals(0, i); |
933 |
|
} |
934 |
|
|
935 |
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/** |
936 |
|
* iterator.remove removes current element |
937 |
|
*/ |
938 |
< |
public void testDescendingIteratorRemove () { |
938 |
> |
public void testDescendingIteratorRemove() { |
939 |
|
final NavigableSet q = dset0(); |
940 |
|
q.add(new Integer(2)); |
941 |
|
q.add(new Integer(1)); |
946 |
|
it.remove(); |
947 |
|
|
948 |
|
it = q.iterator(); |
949 |
< |
assertEquals(it.next(), 2); |
950 |
< |
assertEquals(it.next(), 3); |
949 |
> |
assertEquals(2, it.next()); |
950 |
> |
assertEquals(3, it.next()); |
951 |
|
assertFalse(it.hasNext()); |
952 |
|
} |
953 |
|
|
963 |
– |
|
954 |
|
/** |
955 |
|
* toString contains toStrings of elements |
956 |
|
*/ |
958 |
|
NavigableSet q = populatedSet(SIZE); |
959 |
|
String s = q.toString(); |
960 |
|
for (int i = 0; i < SIZE; ++i) { |
961 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
961 |
> |
assertTrue(s.contains(String.valueOf(i))); |
962 |
|
} |
963 |
|
} |
964 |
|
|
966 |
|
* A deserialized serialized set has same elements |
967 |
|
*/ |
968 |
|
public void testDescendingSerialization() throws Exception { |
969 |
< |
NavigableSet q = populatedSet(SIZE); |
970 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
971 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
972 |
< |
out.writeObject(q); |
973 |
< |
out.close(); |
974 |
< |
|
975 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
976 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
977 |
< |
NavigableSet r = (NavigableSet)in.readObject(); |
978 |
< |
assertEquals(q.size(), r.size()); |
979 |
< |
while (!q.isEmpty()) |
980 |
< |
assertEquals(q.pollFirst(), r.pollFirst()); |
969 |
> |
NavigableSet x = dset5(); |
970 |
> |
NavigableSet y = serialClone(x); |
971 |
> |
|
972 |
> |
assertNotSame(x, y); |
973 |
> |
assertEquals(x.size(), y.size()); |
974 |
> |
assertEquals(x.toString(), y.toString()); |
975 |
> |
assertEquals(x, y); |
976 |
> |
assertEquals(y, x); |
977 |
> |
while (!x.isEmpty()) { |
978 |
> |
assertFalse(y.isEmpty()); |
979 |
> |
assertEquals(x.pollFirst(), y.pollFirst()); |
980 |
> |
} |
981 |
> |
assertTrue(y.isEmpty()); |
982 |
|
} |
983 |
|
|
984 |
|
/** |
1100 |
|
assertEquals(4, set.size()); |
1101 |
|
} |
1102 |
|
|
1103 |
+ |
/** |
1104 |
+ |
* addAll is idempotent |
1105 |
+ |
*/ |
1106 |
+ |
public void testAddAll_idempotent() throws Exception { |
1107 |
+ |
Set x = populatedSet(SIZE); |
1108 |
+ |
Set y = new TreeSet(x); |
1109 |
+ |
y.addAll(x); |
1110 |
+ |
assertEquals(x, y); |
1111 |
+ |
assertEquals(y, x); |
1112 |
+ |
} |
1113 |
+ |
|
1114 |
|
} |