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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.BitSet; |
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import java.util.Collection; |
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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.NoSuchElementException; |
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import java.util.Random; |
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import java.util.Set; |
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import java.util.SortedSet; |
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import java.util.concurrent.ConcurrentSkipListSet; |
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public class ConcurrentSkipListSetTest 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(ConcurrentSkipListSetTest.class); |
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return new TestSuite(ConcurrentSkipListSetTest.class); |
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} |
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static class MyReverseComparator implements Comparator { |
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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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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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* Creates a set of given size containing consecutive |
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* Integers 0 ... n. |
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*/ |
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private ConcurrentSkipListSet populatedSet(int n) { |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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private ConcurrentSkipListSet<Integer> populatedSet(int n) { |
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ConcurrentSkipListSet<Integer> q = |
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new ConcurrentSkipListSet<Integer>(); |
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assertTrue(q.isEmpty()); |
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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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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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assertFalse(q.isEmpty()); |
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assertEquals(n, q.size()); |
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assertEquals(n, q.size()); |
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return q; |
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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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* Creates set of first 5 ints. |
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*/ |
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private ConcurrentSkipListSet set5() { |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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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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assertEquals(5, q.size()); |
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assertEquals(5, q.size()); |
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return q; |
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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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try { |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet((Collection)null); |
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shouldThrow(); |
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} |
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catch (NullPointerException success) {} |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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Integer[] ints = new Integer[SIZE]; |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(Arrays.asList(ints)); |
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shouldThrow(); |
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} |
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catch (NullPointerException success) {} |
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} catch (NullPointerException success) {} |
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} |
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/** |
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ints[i] = new Integer(i); |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(Arrays.asList(ints)); |
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shouldThrow(); |
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} |
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catch (NullPointerException success) {} |
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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 collection used to initialize |
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*/ |
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public void testConstructor6() { |
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try { |
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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(i); |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(Arrays.asList(ints)); |
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for (int i = 0; i < SIZE; ++i) |
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assertEquals(ints[i], q.pollFirst()); |
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} |
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finally {} |
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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(i); |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(Arrays.asList(ints)); |
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for (int i = 0; i < SIZE; ++i) |
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assertEquals(ints[i], q.pollFirst()); |
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} |
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/** |
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* The comparator used in constructor is used |
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*/ |
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public void testConstructor7() { |
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try { |
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MyReverseComparator cmp = new MyReverseComparator(); |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(cmp); |
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assertEquals(cmp, q.comparator()); |
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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(i); |
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q.addAll(Arrays.asList(ints)); |
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for (int i = SIZE-1; i >= 0; --i) |
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assertEquals(ints[i], q.pollFirst()); |
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} |
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finally {} |
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MyReverseComparator cmp = new MyReverseComparator(); |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(cmp); |
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assertEquals(cmp, q.comparator()); |
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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(i); |
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q.addAll(Arrays.asList(ints)); |
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for (int i = SIZE-1; i >= 0; --i) |
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assertEquals(ints[i], q.pollFirst()); |
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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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try { |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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q.add(null); |
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shouldThrow(); |
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} catch (NullPointerException success) { } |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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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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} |
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catch(ClassCastException success) {} |
202 |
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} catch (ClassCastException success) {} |
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} |
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|
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/** |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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q.addAll(null); |
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shouldThrow(); |
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} |
219 |
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catch (NullPointerException success) {} |
213 |
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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 |
218 |
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*/ |
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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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} |
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catch (NullPointerException success) {} |
225 |
> |
} 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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ints[i] = new Integer(i); |
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q.addAll(Arrays.asList(ints)); |
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shouldThrow(); |
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} |
246 |
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catch (NullPointerException success) {} |
240 |
> |
} catch (NullPointerException success) {} |
241 |
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} |
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|
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/** |
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* Set contains all elements of successful addAll |
245 |
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*/ |
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public void testAddAll5() { |
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try { |
248 |
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Integer[] empty = new Integer[0]; |
249 |
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Integer[] ints = new Integer[SIZE]; |
250 |
< |
for (int i = 0; i < SIZE; ++i) |
251 |
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ints[i] = new Integer(SIZE-1-i); |
252 |
< |
ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
253 |
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assertFalse(q.addAll(Arrays.asList(empty))); |
254 |
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assertTrue(q.addAll(Arrays.asList(ints))); |
255 |
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for (int i = 0; i < SIZE; ++i) |
262 |
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assertEquals(new Integer(i), q.pollFirst()); |
263 |
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} |
264 |
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finally {} |
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> |
Integer[] empty = new Integer[0]; |
248 |
> |
Integer[] ints = new Integer[SIZE]; |
249 |
> |
for (int i = 0; i < SIZE; ++i) |
250 |
> |
ints[i] = new Integer(SIZE-1-i); |
251 |
> |
ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
252 |
> |
assertFalse(q.addAll(Arrays.asList(empty))); |
253 |
> |
assertTrue(q.addAll(Arrays.asList(ints))); |
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> |
for (int i = 0; i < SIZE; ++i) |
255 |
> |
assertEquals(i, q.pollFirst()); |
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} |
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|
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/** |
261 |
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public void testPollFirst() { |
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ConcurrentSkipListSet q = populatedSet(SIZE); |
263 |
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for (int i = 0; i < SIZE; ++i) { |
264 |
< |
assertEquals(i, ((Integer)q.pollFirst()).intValue()); |
264 |
> |
assertEquals(i, q.pollFirst()); |
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} |
266 |
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assertNull(q.pollFirst()); |
266 |
> |
assertNull(q.pollFirst()); |
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} |
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|
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/** |
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public void testPollLast() { |
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ConcurrentSkipListSet q = populatedSet(SIZE); |
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for (int i = SIZE-1; i >= 0; --i) { |
275 |
< |
assertEquals(i, ((Integer)q.pollLast()).intValue()); |
275 |
> |
assertEquals(i, q.pollLast()); |
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} |
277 |
< |
assertNull(q.pollFirst()); |
277 |
> |
assertNull(q.pollFirst()); |
278 |
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} |
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|
289 |
– |
|
280 |
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/** |
281 |
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* remove(x) removes x and returns true if present |
282 |
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*/ |
283 |
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public void testRemoveElement() { |
284 |
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ConcurrentSkipListSet q = populatedSet(SIZE); |
285 |
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for (int i = 1; i < SIZE; i+=2) { |
286 |
< |
assertTrue(q.remove(new Integer(i))); |
286 |
> |
assertTrue(q.contains(i)); |
287 |
> |
assertTrue(q.remove(i)); |
288 |
> |
assertFalse(q.contains(i)); |
289 |
> |
assertTrue(q.contains(i-1)); |
290 |
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} |
291 |
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for (int i = 0; i < SIZE; i+=2) { |
292 |
< |
assertTrue(q.remove(new Integer(i))); |
293 |
< |
assertFalse(q.remove(new Integer(i+1))); |
292 |
> |
assertTrue(q.contains(i)); |
293 |
> |
assertTrue(q.remove(i)); |
294 |
> |
assertFalse(q.contains(i)); |
295 |
> |
assertFalse(q.remove(i+1)); |
296 |
> |
assertFalse(q.contains(i+1)); |
297 |
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} |
298 |
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assertTrue(q.isEmpty()); |
299 |
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} |
300 |
< |
|
300 |
> |
|
301 |
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/** |
302 |
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* contains(x) reports true when elements added but not yet removed |
303 |
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*/ |
373 |
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} |
374 |
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} |
375 |
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|
380 |
– |
|
381 |
– |
|
376 |
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/** |
377 |
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* lower returns preceding element |
378 |
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*/ |
389 |
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|
390 |
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Object e4 = q.lower(zero); |
391 |
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assertNull(e4); |
398 |
– |
|
392 |
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} |
393 |
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|
394 |
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/** |
407 |
|
|
408 |
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Object e4 = q.higher(six); |
409 |
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assertNull(e4); |
417 |
– |
|
410 |
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} |
411 |
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|
412 |
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/** |
425 |
|
|
426 |
|
Object e4 = q.floor(zero); |
427 |
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assertNull(e4); |
436 |
– |
|
428 |
|
} |
429 |
|
|
430 |
|
/** |
443 |
|
|
444 |
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Object e4 = q.ceiling(six); |
445 |
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assertNull(e4); |
455 |
– |
|
446 |
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} |
447 |
|
|
448 |
|
/** |
449 |
< |
* toArray contains all elements |
449 |
> |
* toArray contains all elements in sorted order |
450 |
|
*/ |
451 |
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public void testToArray() { |
452 |
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ConcurrentSkipListSet q = populatedSet(SIZE); |
453 |
< |
Object[] o = q.toArray(); |
454 |
< |
Arrays.sort(o); |
455 |
< |
for(int i = 0; i < o.length; i++) |
466 |
< |
assertEquals(o[i], q.pollFirst()); |
453 |
> |
Object[] o = q.toArray(); |
454 |
> |
for (int i = 0; i < o.length; i++) |
455 |
> |
assertSame(o[i], q.pollFirst()); |
456 |
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} |
457 |
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|
458 |
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/** |
459 |
< |
* toArray(a) contains all elements |
459 |
> |
* toArray(a) contains all elements in sorted order |
460 |
|
*/ |
461 |
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public void testToArray2() { |
462 |
< |
ConcurrentSkipListSet q = populatedSet(SIZE); |
463 |
< |
Integer[] ints = new Integer[SIZE]; |
464 |
< |
ints = (Integer[])q.toArray(ints); |
465 |
< |
Arrays.sort(ints); |
466 |
< |
for(int i = 0; i < ints.length; i++) |
478 |
< |
assertEquals(ints[i], q.pollFirst()); |
462 |
> |
ConcurrentSkipListSet<Integer> q = populatedSet(SIZE); |
463 |
> |
Integer[] ints = new Integer[SIZE]; |
464 |
> |
assertSame(ints, q.toArray(ints)); |
465 |
> |
for (int i = 0; i < ints.length; i++) |
466 |
> |
assertSame(ints[i], q.pollFirst()); |
467 |
|
} |
468 |
< |
|
468 |
> |
|
469 |
|
/** |
470 |
|
* iterator iterates through all elements |
471 |
|
*/ |
472 |
|
public void testIterator() { |
473 |
|
ConcurrentSkipListSet q = populatedSet(SIZE); |
474 |
|
int i = 0; |
475 |
< |
Iterator it = q.iterator(); |
476 |
< |
while(it.hasNext()) { |
475 |
> |
Iterator it = q.iterator(); |
476 |
> |
while (it.hasNext()) { |
477 |
|
assertTrue(q.contains(it.next())); |
478 |
|
++i; |
479 |
|
} |
486 |
|
public void testEmptyIterator() { |
487 |
|
ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
488 |
|
int i = 0; |
489 |
< |
Iterator it = q.iterator(); |
490 |
< |
while(it.hasNext()) { |
489 |
> |
Iterator it = q.iterator(); |
490 |
> |
while (it.hasNext()) { |
491 |
|
assertTrue(q.contains(it.next())); |
492 |
|
++i; |
493 |
|
} |
494 |
< |
assertEquals(i, 0); |
494 |
> |
assertEquals(0, i); |
495 |
|
} |
496 |
|
|
497 |
|
/** |
498 |
|
* iterator.remove removes current element |
499 |
|
*/ |
500 |
< |
public void testIteratorRemove () { |
500 |
> |
public void testIteratorRemove() { |
501 |
|
final ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
502 |
|
q.add(new Integer(2)); |
503 |
|
q.add(new Integer(1)); |
513 |
|
assertFalse(it.hasNext()); |
514 |
|
} |
515 |
|
|
528 |
– |
|
516 |
|
/** |
517 |
|
* toString contains toStrings of elements |
518 |
|
*/ |
520 |
|
ConcurrentSkipListSet q = populatedSet(SIZE); |
521 |
|
String s = q.toString(); |
522 |
|
for (int i = 0; i < SIZE; ++i) { |
523 |
< |
assertTrue(s.indexOf(String.valueOf(i)) >= 0); |
523 |
> |
assertTrue(s.contains(String.valueOf(i))); |
524 |
|
} |
525 |
< |
} |
525 |
> |
} |
526 |
|
|
527 |
|
/** |
528 |
< |
* A deserialized serialized set has same elements |
528 |
> |
* A deserialized serialized set has same elements |
529 |
|
*/ |
530 |
< |
public void testSerialization() { |
531 |
< |
ConcurrentSkipListSet q = populatedSet(SIZE); |
532 |
< |
try { |
533 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
534 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
535 |
< |
out.writeObject(q); |
536 |
< |
out.close(); |
537 |
< |
|
538 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
539 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
540 |
< |
ConcurrentSkipListSet r = (ConcurrentSkipListSet)in.readObject(); |
554 |
< |
assertEquals(q.size(), r.size()); |
555 |
< |
while (!q.isEmpty()) |
556 |
< |
assertEquals(q.pollFirst(), r.pollFirst()); |
557 |
< |
} catch(Exception e){ |
558 |
< |
e.printStackTrace(); |
559 |
< |
unexpectedException(); |
530 |
> |
public void testSerialization() throws Exception { |
531 |
> |
NavigableSet x = populatedSet(SIZE); |
532 |
> |
NavigableSet y = serialClone(x); |
533 |
> |
|
534 |
> |
assertTrue(x != y); |
535 |
> |
assertEquals(x.size(), y.size()); |
536 |
> |
assertEquals(x, y); |
537 |
> |
assertEquals(y, x); |
538 |
> |
while (!x.isEmpty()) { |
539 |
> |
assertFalse(y.isEmpty()); |
540 |
> |
assertEquals(x.pollFirst(), y.pollFirst()); |
541 |
|
} |
542 |
+ |
assertTrue(y.isEmpty()); |
543 |
|
} |
544 |
|
|
545 |
|
/** |
661 |
|
assertEquals(4, set.size()); |
662 |
|
} |
663 |
|
|
664 |
+ |
Random rnd = new Random(666); |
665 |
+ |
|
666 |
+ |
/** |
667 |
+ |
* Subsets of subsets subdivide correctly |
668 |
+ |
*/ |
669 |
+ |
public void testRecursiveSubSets() throws Exception { |
670 |
+ |
int setSize = expensiveTests ? 1000 : 100; |
671 |
+ |
Class cl = ConcurrentSkipListSet.class; |
672 |
+ |
|
673 |
+ |
NavigableSet<Integer> set = newSet(cl); |
674 |
+ |
BitSet bs = new BitSet(setSize); |
675 |
+ |
|
676 |
+ |
populate(set, setSize, bs); |
677 |
+ |
check(set, 0, setSize - 1, true, bs); |
678 |
+ |
check(set.descendingSet(), 0, setSize - 1, false, bs); |
679 |
+ |
|
680 |
+ |
mutateSet(set, 0, setSize - 1, bs); |
681 |
+ |
check(set, 0, setSize - 1, true, bs); |
682 |
+ |
check(set.descendingSet(), 0, setSize - 1, false, bs); |
683 |
+ |
|
684 |
+ |
bashSubSet(set.subSet(0, true, setSize, false), |
685 |
+ |
0, setSize - 1, true, bs); |
686 |
+ |
} |
687 |
+ |
|
688 |
+ |
static NavigableSet<Integer> newSet(Class cl) throws Exception { |
689 |
+ |
NavigableSet<Integer> result = (NavigableSet<Integer>) cl.newInstance(); |
690 |
+ |
assertEquals(0, result.size()); |
691 |
+ |
assertFalse(result.iterator().hasNext()); |
692 |
+ |
return result; |
693 |
+ |
} |
694 |
+ |
|
695 |
+ |
void populate(NavigableSet<Integer> set, int limit, BitSet bs) { |
696 |
+ |
for (int i = 0, n = 2 * limit / 3; i < n; i++) { |
697 |
+ |
int element = rnd.nextInt(limit); |
698 |
+ |
put(set, element, bs); |
699 |
+ |
} |
700 |
+ |
} |
701 |
+ |
|
702 |
+ |
void mutateSet(NavigableSet<Integer> set, int min, int max, BitSet bs) { |
703 |
+ |
int size = set.size(); |
704 |
+ |
int rangeSize = max - min + 1; |
705 |
+ |
|
706 |
+ |
// Remove a bunch of entries directly |
707 |
+ |
for (int i = 0, n = rangeSize / 2; i < n; i++) { |
708 |
+ |
remove(set, min - 5 + rnd.nextInt(rangeSize + 10), bs); |
709 |
+ |
} |
710 |
+ |
|
711 |
+ |
// Remove a bunch of entries with iterator |
712 |
+ |
for (Iterator<Integer> it = set.iterator(); it.hasNext(); ) { |
713 |
+ |
if (rnd.nextBoolean()) { |
714 |
+ |
bs.clear(it.next()); |
715 |
+ |
it.remove(); |
716 |
+ |
} |
717 |
+ |
} |
718 |
+ |
|
719 |
+ |
// Add entries till we're back to original size |
720 |
+ |
while (set.size() < size) { |
721 |
+ |
int element = min + rnd.nextInt(rangeSize); |
722 |
+ |
assertTrue(element >= min && element<= max); |
723 |
+ |
put(set, element, bs); |
724 |
+ |
} |
725 |
+ |
} |
726 |
+ |
|
727 |
+ |
void mutateSubSet(NavigableSet<Integer> set, int min, int max, |
728 |
+ |
BitSet bs) { |
729 |
+ |
int size = set.size(); |
730 |
+ |
int rangeSize = max - min + 1; |
731 |
+ |
|
732 |
+ |
// Remove a bunch of entries directly |
733 |
+ |
for (int i = 0, n = rangeSize / 2; i < n; i++) { |
734 |
+ |
remove(set, min - 5 + rnd.nextInt(rangeSize + 10), bs); |
735 |
+ |
} |
736 |
+ |
|
737 |
+ |
// Remove a bunch of entries with iterator |
738 |
+ |
for (Iterator<Integer> it = set.iterator(); it.hasNext(); ) { |
739 |
+ |
if (rnd.nextBoolean()) { |
740 |
+ |
bs.clear(it.next()); |
741 |
+ |
it.remove(); |
742 |
+ |
} |
743 |
+ |
} |
744 |
+ |
|
745 |
+ |
// Add entries till we're back to original size |
746 |
+ |
while (set.size() < size) { |
747 |
+ |
int element = min - 5 + rnd.nextInt(rangeSize + 10); |
748 |
+ |
if (element >= min && element<= max) { |
749 |
+ |
put(set, element, bs); |
750 |
+ |
} else { |
751 |
+ |
try { |
752 |
+ |
set.add(element); |
753 |
+ |
shouldThrow(); |
754 |
+ |
} catch (IllegalArgumentException success) {} |
755 |
+ |
} |
756 |
+ |
} |
757 |
+ |
} |
758 |
+ |
|
759 |
+ |
void put(NavigableSet<Integer> set, int element, BitSet bs) { |
760 |
+ |
if (set.add(element)) |
761 |
+ |
bs.set(element); |
762 |
+ |
} |
763 |
+ |
|
764 |
+ |
void remove(NavigableSet<Integer> set, int element, BitSet bs) { |
765 |
+ |
if (set.remove(element)) |
766 |
+ |
bs.clear(element); |
767 |
+ |
} |
768 |
+ |
|
769 |
+ |
void bashSubSet(NavigableSet<Integer> set, |
770 |
+ |
int min, int max, boolean ascending, |
771 |
+ |
BitSet bs) { |
772 |
+ |
check(set, min, max, ascending, bs); |
773 |
+ |
check(set.descendingSet(), min, max, !ascending, bs); |
774 |
+ |
|
775 |
+ |
mutateSubSet(set, min, max, bs); |
776 |
+ |
check(set, min, max, ascending, bs); |
777 |
+ |
check(set.descendingSet(), min, max, !ascending, bs); |
778 |
+ |
|
779 |
+ |
// Recurse |
780 |
+ |
if (max - min < 2) |
781 |
+ |
return; |
782 |
+ |
int midPoint = (min + max) / 2; |
783 |
+ |
|
784 |
+ |
// headSet - pick direction and endpoint inclusion randomly |
785 |
+ |
boolean incl = rnd.nextBoolean(); |
786 |
+ |
NavigableSet<Integer> hm = set.headSet(midPoint, incl); |
787 |
+ |
if (ascending) { |
788 |
+ |
if (rnd.nextBoolean()) |
789 |
+ |
bashSubSet(hm, min, midPoint - (incl ? 0 : 1), true, bs); |
790 |
+ |
else |
791 |
+ |
bashSubSet(hm.descendingSet(), min, midPoint - (incl ? 0 : 1), |
792 |
+ |
false, bs); |
793 |
+ |
} else { |
794 |
+ |
if (rnd.nextBoolean()) |
795 |
+ |
bashSubSet(hm, midPoint + (incl ? 0 : 1), max, false, bs); |
796 |
+ |
else |
797 |
+ |
bashSubSet(hm.descendingSet(), midPoint + (incl ? 0 : 1), max, |
798 |
+ |
true, bs); |
799 |
+ |
} |
800 |
+ |
|
801 |
+ |
// tailSet - pick direction and endpoint inclusion randomly |
802 |
+ |
incl = rnd.nextBoolean(); |
803 |
+ |
NavigableSet<Integer> tm = set.tailSet(midPoint,incl); |
804 |
+ |
if (ascending) { |
805 |
+ |
if (rnd.nextBoolean()) |
806 |
+ |
bashSubSet(tm, midPoint + (incl ? 0 : 1), max, true, bs); |
807 |
+ |
else |
808 |
+ |
bashSubSet(tm.descendingSet(), midPoint + (incl ? 0 : 1), max, |
809 |
+ |
false, bs); |
810 |
+ |
} else { |
811 |
+ |
if (rnd.nextBoolean()) { |
812 |
+ |
bashSubSet(tm, min, midPoint - (incl ? 0 : 1), false, bs); |
813 |
+ |
} else { |
814 |
+ |
bashSubSet(tm.descendingSet(), min, midPoint - (incl ? 0 : 1), |
815 |
+ |
true, bs); |
816 |
+ |
} |
817 |
+ |
} |
818 |
+ |
|
819 |
+ |
// subSet - pick direction and endpoint inclusion randomly |
820 |
+ |
int rangeSize = max - min + 1; |
821 |
+ |
int[] endpoints = new int[2]; |
822 |
+ |
endpoints[0] = min + rnd.nextInt(rangeSize); |
823 |
+ |
endpoints[1] = min + rnd.nextInt(rangeSize); |
824 |
+ |
Arrays.sort(endpoints); |
825 |
+ |
boolean lowIncl = rnd.nextBoolean(); |
826 |
+ |
boolean highIncl = rnd.nextBoolean(); |
827 |
+ |
if (ascending) { |
828 |
+ |
NavigableSet<Integer> sm = set.subSet( |
829 |
+ |
endpoints[0], lowIncl, endpoints[1], highIncl); |
830 |
+ |
if (rnd.nextBoolean()) |
831 |
+ |
bashSubSet(sm, endpoints[0] + (lowIncl ? 0 : 1), |
832 |
+ |
endpoints[1] - (highIncl ? 0 : 1), true, bs); |
833 |
+ |
else |
834 |
+ |
bashSubSet(sm.descendingSet(), endpoints[0] + (lowIncl ? 0 : 1), |
835 |
+ |
endpoints[1] - (highIncl ? 0 : 1), false, bs); |
836 |
+ |
} else { |
837 |
+ |
NavigableSet<Integer> sm = set.subSet( |
838 |
+ |
endpoints[1], highIncl, endpoints[0], lowIncl); |
839 |
+ |
if (rnd.nextBoolean()) |
840 |
+ |
bashSubSet(sm, endpoints[0] + (lowIncl ? 0 : 1), |
841 |
+ |
endpoints[1] - (highIncl ? 0 : 1), false, bs); |
842 |
+ |
else |
843 |
+ |
bashSubSet(sm.descendingSet(), endpoints[0] + (lowIncl ? 0 : 1), |
844 |
+ |
endpoints[1] - (highIncl ? 0 : 1), true, bs); |
845 |
+ |
} |
846 |
+ |
} |
847 |
+ |
|
848 |
+ |
/** |
849 |
+ |
* min and max are both inclusive. If max < min, interval is empty. |
850 |
+ |
*/ |
851 |
+ |
void check(NavigableSet<Integer> set, |
852 |
+ |
final int min, final int max, final boolean ascending, |
853 |
+ |
final BitSet bs) { |
854 |
+ |
class ReferenceSet { |
855 |
+ |
int lower(int element) { |
856 |
+ |
return ascending ? |
857 |
+ |
lowerAscending(element) : higherAscending(element); |
858 |
+ |
} |
859 |
+ |
int floor(int element) { |
860 |
+ |
return ascending ? |
861 |
+ |
floorAscending(element) : ceilingAscending(element); |
862 |
+ |
} |
863 |
+ |
int ceiling(int element) { |
864 |
+ |
return ascending ? |
865 |
+ |
ceilingAscending(element) : floorAscending(element); |
866 |
+ |
} |
867 |
+ |
int higher(int element) { |
868 |
+ |
return ascending ? |
869 |
+ |
higherAscending(element) : lowerAscending(element); |
870 |
+ |
} |
871 |
+ |
int first() { |
872 |
+ |
return ascending ? firstAscending() : lastAscending(); |
873 |
+ |
} |
874 |
+ |
int last() { |
875 |
+ |
return ascending ? lastAscending() : firstAscending(); |
876 |
+ |
} |
877 |
+ |
int lowerAscending(int element) { |
878 |
+ |
return floorAscending(element - 1); |
879 |
+ |
} |
880 |
+ |
int floorAscending(int element) { |
881 |
+ |
if (element < min) |
882 |
+ |
return -1; |
883 |
+ |
else if (element > max) |
884 |
+ |
element = max; |
885 |
+ |
|
886 |
+ |
// BitSet should support this! Test would run much faster |
887 |
+ |
while (element >= min) { |
888 |
+ |
if (bs.get(element)) |
889 |
+ |
return element; |
890 |
+ |
element--; |
891 |
+ |
} |
892 |
+ |
return -1; |
893 |
+ |
} |
894 |
+ |
int ceilingAscending(int element) { |
895 |
+ |
if (element < min) |
896 |
+ |
element = min; |
897 |
+ |
else if (element > max) |
898 |
+ |
return -1; |
899 |
+ |
int result = bs.nextSetBit(element); |
900 |
+ |
return result > max ? -1 : result; |
901 |
+ |
} |
902 |
+ |
int higherAscending(int element) { |
903 |
+ |
return ceilingAscending(element + 1); |
904 |
+ |
} |
905 |
+ |
private int firstAscending() { |
906 |
+ |
int result = ceilingAscending(min); |
907 |
+ |
return result > max ? -1 : result; |
908 |
+ |
} |
909 |
+ |
private int lastAscending() { |
910 |
+ |
int result = floorAscending(max); |
911 |
+ |
return result < min ? -1 : result; |
912 |
+ |
} |
913 |
+ |
} |
914 |
+ |
ReferenceSet rs = new ReferenceSet(); |
915 |
+ |
|
916 |
+ |
// Test contents using containsElement |
917 |
+ |
int size = 0; |
918 |
+ |
for (int i = min; i <= max; i++) { |
919 |
+ |
boolean bsContainsI = bs.get(i); |
920 |
+ |
assertEquals(bsContainsI, set.contains(i)); |
921 |
+ |
if (bsContainsI) |
922 |
+ |
size++; |
923 |
+ |
} |
924 |
+ |
assertEquals(size, set.size()); |
925 |
+ |
|
926 |
+ |
// Test contents using contains elementSet iterator |
927 |
+ |
int size2 = 0; |
928 |
+ |
int previousElement = -1; |
929 |
+ |
for (int element : set) { |
930 |
+ |
assertTrue(bs.get(element)); |
931 |
+ |
size2++; |
932 |
+ |
assertTrue(previousElement < 0 || (ascending ? |
933 |
+ |
element - previousElement > 0 : element - previousElement < 0)); |
934 |
+ |
previousElement = element; |
935 |
+ |
} |
936 |
+ |
assertEquals(size2, size); |
937 |
+ |
|
938 |
+ |
// Test navigation ops |
939 |
+ |
for (int element = min - 1; element <= max + 1; element++) { |
940 |
+ |
assertEq(set.lower(element), rs.lower(element)); |
941 |
+ |
assertEq(set.floor(element), rs.floor(element)); |
942 |
+ |
assertEq(set.higher(element), rs.higher(element)); |
943 |
+ |
assertEq(set.ceiling(element), rs.ceiling(element)); |
944 |
+ |
} |
945 |
+ |
|
946 |
+ |
// Test extrema |
947 |
+ |
if (set.size() != 0) { |
948 |
+ |
assertEq(set.first(), rs.first()); |
949 |
+ |
assertEq(set.last(), rs.last()); |
950 |
+ |
} else { |
951 |
+ |
assertEq(rs.first(), -1); |
952 |
+ |
assertEq(rs.last(), -1); |
953 |
+ |
try { |
954 |
+ |
set.first(); |
955 |
+ |
shouldThrow(); |
956 |
+ |
} catch (NoSuchElementException success) {} |
957 |
+ |
try { |
958 |
+ |
set.last(); |
959 |
+ |
shouldThrow(); |
960 |
+ |
} catch (NoSuchElementException success) {} |
961 |
+ |
} |
962 |
+ |
} |
963 |
+ |
|
964 |
+ |
static void assertEq(Integer i, int j) { |
965 |
+ |
if (i == null) |
966 |
+ |
assertEquals(j, -1); |
967 |
+ |
else |
968 |
+ |
assertEquals((int) i, j); |
969 |
+ |
} |
970 |
+ |
|
971 |
+ |
static boolean eq(Integer i, int j) { |
972 |
+ |
return i == null ? j == -1 : i == j; |
973 |
+ |
} |
974 |
+ |
|
975 |
|
} |