author | dl |
Fri, 23 Sep 2016 13:24:33 -0700 | |
changeset 41131 | 87edc8451f8a |
parent 39039 | 9dea20ff2dee |
child 42322 | c3474fef4fe4 |
permissions | -rw-r--r-- |
35394 | 1 |
/* |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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/* |
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* This file is available under and governed by the GNU General Public |
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* License version 2 only, as published by the Free Software Foundation. |
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* However, the following notice accompanied the original version of this |
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* file: |
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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/publicdomain/zero/1.0/ |
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*/ |
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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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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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public class ConcurrentSkipListSetTest extends JSR166TestCase { |
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public static void main(String[] args) { |
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main(suite(), args); |
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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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} |
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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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* 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 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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assertFalse(q.isEmpty()); |
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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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* Returns a new 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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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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assertEquals(5, q.size()); |
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return q; |
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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, new ConcurrentSkipListSet().size()); |
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} |
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/** |
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* Initializing from null Collection throws NPE |
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*/ |
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public void testConstructor3() { |
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try { |
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new ConcurrentSkipListSet((Collection)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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* Initializing from Collection of null elements throws NPE |
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*/ |
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public void testConstructor4() { |
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try { |
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new ConcurrentSkipListSet(Arrays.asList(new Integer[SIZE])); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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/** |
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* Initializing from Collection with some null elements throws NPE |
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*/ |
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public void testConstructor5() { |
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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); |
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try { |
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new ConcurrentSkipListSet(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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* Set contains all elements of collection used to initialize |
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*/ |
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public void testConstructor6() { |
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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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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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* isEmpty is true before add, false after |
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*/ |
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public void testEmpty() { |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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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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* size changes when elements added and removed |
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*/ |
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public void testSize() { |
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ConcurrentSkipListSet 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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* add(null) throws NPE |
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*/ |
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public void testAddNull() { |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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try { |
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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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* Add of comparable element succeeds |
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*/ |
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public void testAdd() { |
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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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assertTrue(q.add(zero)); |
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assertTrue(q.add(one)); |
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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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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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assertTrue(q.add(zero)); |
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assertFalse(q.add(zero)); |
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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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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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try { |
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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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assertTrue(q.size() < 2); |
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for (int i = 0, size = q.size(); i < size; i++) |
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assertTrue(q.pollFirst().getClass() == Object.class); |
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assertNull(q.pollFirst()); |
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assertTrue(q.isEmpty()); |
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assertEquals(0, q.size()); |
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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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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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try { |
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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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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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Integer[] ints = new Integer[SIZE]; |
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try { |
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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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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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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); |
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try { |
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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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* 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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ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
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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(i, q.pollFirst()); |
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} |
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/** |
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* pollFirst succeeds unless empty |
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*/ |
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public void testPollFirst() { |
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ConcurrentSkipListSet 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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* pollLast succeeds unless empty |
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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) { |
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assertEquals(i, q.pollLast()); |
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} |
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assertNull(q.pollFirst()); |
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} |
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/** |
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315 |
* remove(x) removes x and returns true if present |
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*/ |
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public void testRemoveElement() { |
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ConcurrentSkipListSet q = populatedSet(SIZE); |
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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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334 |
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/** |
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336 |
* contains(x) reports true when elements added but not yet removed |
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337 |
*/ |
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338 |
public void testContains() { |
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339 |
ConcurrentSkipListSet q = populatedSet(SIZE); |
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340 |
for (int i = 0; i < SIZE; ++i) { |
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341 |
assertTrue(q.contains(new Integer(i))); |
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342 |
q.pollFirst(); |
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343 |
assertFalse(q.contains(new Integer(i))); |
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344 |
} |
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345 |
} |
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346 |
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347 |
/** |
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348 |
* clear removes all elements |
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349 |
*/ |
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350 |
public void testClear() { |
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351 |
ConcurrentSkipListSet q = populatedSet(SIZE); |
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352 |
q.clear(); |
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353 |
assertTrue(q.isEmpty()); |
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354 |
assertEquals(0, q.size()); |
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355 |
q.add(new Integer(1)); |
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356 |
assertFalse(q.isEmpty()); |
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357 |
q.clear(); |
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358 |
assertTrue(q.isEmpty()); |
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359 |
} |
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360 |
||
361 |
/** |
|
362 |
* containsAll(c) is true when c contains a subset of elements |
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363 |
*/ |
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364 |
public void testContainsAll() { |
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365 |
ConcurrentSkipListSet q = populatedSet(SIZE); |
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366 |
ConcurrentSkipListSet p = new ConcurrentSkipListSet(); |
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367 |
for (int i = 0; i < SIZE; ++i) { |
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368 |
assertTrue(q.containsAll(p)); |
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369 |
assertFalse(p.containsAll(q)); |
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p.add(new Integer(i)); |
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371 |
} |
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372 |
assertTrue(p.containsAll(q)); |
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373 |
} |
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374 |
||
375 |
/** |
|
376 |
* retainAll(c) retains only those elements of c and reports true if changed |
|
377 |
*/ |
|
378 |
public void testRetainAll() { |
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379 |
ConcurrentSkipListSet q = populatedSet(SIZE); |
|
380 |
ConcurrentSkipListSet p = populatedSet(SIZE); |
|
381 |
for (int i = 0; i < SIZE; ++i) { |
|
382 |
boolean changed = q.retainAll(p); |
|
383 |
if (i == 0) |
|
384 |
assertFalse(changed); |
|
385 |
else |
|
386 |
assertTrue(changed); |
|
387 |
||
388 |
assertTrue(q.containsAll(p)); |
|
389 |
assertEquals(SIZE - i, q.size()); |
|
390 |
p.pollFirst(); |
|
391 |
} |
|
392 |
} |
|
393 |
||
394 |
/** |
|
395 |
* removeAll(c) removes only those elements of c and reports true if changed |
|
396 |
*/ |
|
397 |
public void testRemoveAll() { |
|
398 |
for (int i = 1; i < SIZE; ++i) { |
|
399 |
ConcurrentSkipListSet q = populatedSet(SIZE); |
|
400 |
ConcurrentSkipListSet p = populatedSet(i); |
|
401 |
assertTrue(q.removeAll(p)); |
|
402 |
assertEquals(SIZE - i, q.size()); |
|
403 |
for (int j = 0; j < i; ++j) { |
|
404 |
Integer x = (Integer)(p.pollFirst()); |
|
405 |
assertFalse(q.contains(x)); |
|
406 |
} |
|
407 |
} |
|
408 |
} |
|
409 |
||
410 |
/** |
|
411 |
* lower returns preceding element |
|
412 |
*/ |
|
413 |
public void testLower() { |
|
414 |
ConcurrentSkipListSet q = set5(); |
|
415 |
Object e1 = q.lower(three); |
|
416 |
assertEquals(two, e1); |
|
417 |
||
418 |
Object e2 = q.lower(six); |
|
419 |
assertEquals(five, e2); |
|
420 |
||
421 |
Object e3 = q.lower(one); |
|
422 |
assertNull(e3); |
|
423 |
||
424 |
Object e4 = q.lower(zero); |
|
425 |
assertNull(e4); |
|
426 |
} |
|
427 |
||
428 |
/** |
|
429 |
* higher returns next element |
|
430 |
*/ |
|
431 |
public void testHigher() { |
|
432 |
ConcurrentSkipListSet q = set5(); |
|
433 |
Object e1 = q.higher(three); |
|
434 |
assertEquals(four, e1); |
|
435 |
||
436 |
Object e2 = q.higher(zero); |
|
437 |
assertEquals(one, e2); |
|
438 |
||
439 |
Object e3 = q.higher(five); |
|
440 |
assertNull(e3); |
|
441 |
||
442 |
Object e4 = q.higher(six); |
|
443 |
assertNull(e4); |
|
444 |
} |
|
445 |
||
446 |
/** |
|
447 |
* floor returns preceding element |
|
448 |
*/ |
|
449 |
public void testFloor() { |
|
450 |
ConcurrentSkipListSet q = set5(); |
|
451 |
Object e1 = q.floor(three); |
|
452 |
assertEquals(three, e1); |
|
453 |
||
454 |
Object e2 = q.floor(six); |
|
455 |
assertEquals(five, e2); |
|
456 |
||
457 |
Object e3 = q.floor(one); |
|
458 |
assertEquals(one, e3); |
|
459 |
||
460 |
Object e4 = q.floor(zero); |
|
461 |
assertNull(e4); |
|
462 |
} |
|
463 |
||
464 |
/** |
|
465 |
* ceiling returns next element |
|
466 |
*/ |
|
467 |
public void testCeiling() { |
|
468 |
ConcurrentSkipListSet q = set5(); |
|
469 |
Object e1 = q.ceiling(three); |
|
470 |
assertEquals(three, e1); |
|
471 |
||
472 |
Object e2 = q.ceiling(zero); |
|
473 |
assertEquals(one, e2); |
|
474 |
||
475 |
Object e3 = q.ceiling(five); |
|
476 |
assertEquals(five, e3); |
|
477 |
||
478 |
Object e4 = q.ceiling(six); |
|
479 |
assertNull(e4); |
|
480 |
} |
|
481 |
||
482 |
/** |
|
483 |
* toArray contains all elements in sorted order |
|
484 |
*/ |
|
485 |
public void testToArray() { |
|
486 |
ConcurrentSkipListSet q = populatedSet(SIZE); |
|
487 |
Object[] o = q.toArray(); |
|
488 |
for (int i = 0; i < o.length; i++) |
|
489 |
assertSame(o[i], q.pollFirst()); |
|
490 |
} |
|
491 |
||
492 |
/** |
|
493 |
* toArray(a) contains all elements in sorted order |
|
494 |
*/ |
|
495 |
public void testToArray2() { |
|
496 |
ConcurrentSkipListSet<Integer> q = populatedSet(SIZE); |
|
497 |
Integer[] ints = new Integer[SIZE]; |
|
498 |
assertSame(ints, q.toArray(ints)); |
|
499 |
for (int i = 0; i < ints.length; i++) |
|
500 |
assertSame(ints[i], q.pollFirst()); |
|
501 |
} |
|
502 |
||
503 |
/** |
|
504 |
* iterator iterates through all elements |
|
505 |
*/ |
|
506 |
public void testIterator() { |
|
507 |
ConcurrentSkipListSet q = populatedSet(SIZE); |
|
508 |
Iterator it = q.iterator(); |
|
509 |
int i; |
|
510 |
for (i = 0; it.hasNext(); i++) |
|
511 |
assertTrue(q.contains(it.next())); |
|
512 |
assertEquals(i, SIZE); |
|
513 |
assertIteratorExhausted(it); |
|
514 |
} |
|
515 |
||
516 |
/** |
|
517 |
* iterator of empty set has no elements |
|
518 |
*/ |
|
519 |
public void testEmptyIterator() { |
|
520 |
NavigableSet s = new ConcurrentSkipListSet(); |
|
521 |
assertIteratorExhausted(s.iterator()); |
|
522 |
assertIteratorExhausted(s.descendingSet().iterator()); |
|
523 |
} |
|
524 |
||
525 |
/** |
|
526 |
* iterator.remove removes current element |
|
527 |
*/ |
|
528 |
public void testIteratorRemove() { |
|
529 |
final ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
|
530 |
q.add(new Integer(2)); |
|
531 |
q.add(new Integer(1)); |
|
532 |
q.add(new Integer(3)); |
|
533 |
||
534 |
Iterator it = q.iterator(); |
|
535 |
it.next(); |
|
536 |
it.remove(); |
|
537 |
||
538 |
it = q.iterator(); |
|
539 |
assertEquals(it.next(), new Integer(2)); |
|
540 |
assertEquals(it.next(), new Integer(3)); |
|
541 |
assertFalse(it.hasNext()); |
|
542 |
} |
|
543 |
||
544 |
/** |
|
545 |
* toString contains toStrings of elements |
|
546 |
*/ |
|
547 |
public void testToString() { |
|
548 |
ConcurrentSkipListSet q = populatedSet(SIZE); |
|
549 |
String s = q.toString(); |
|
550 |
for (int i = 0; i < SIZE; ++i) { |
|
551 |
assertTrue(s.contains(String.valueOf(i))); |
|
552 |
} |
|
553 |
} |
|
554 |
||
555 |
/** |
|
556 |
* A deserialized serialized set has same elements |
|
557 |
*/ |
|
558 |
public void testSerialization() throws Exception { |
|
559 |
NavigableSet x = populatedSet(SIZE); |
|
560 |
NavigableSet y = serialClone(x); |
|
561 |
||
562 |
assertNotSame(x, y); |
|
563 |
assertEquals(x.size(), y.size()); |
|
564 |
assertEquals(x, y); |
|
565 |
assertEquals(y, x); |
|
566 |
while (!x.isEmpty()) { |
|
567 |
assertFalse(y.isEmpty()); |
|
568 |
assertEquals(x.pollFirst(), y.pollFirst()); |
|
569 |
} |
|
570 |
assertTrue(y.isEmpty()); |
|
571 |
} |
|
572 |
||
573 |
/** |
|
574 |
* subSet returns set with keys in requested range |
|
575 |
*/ |
|
576 |
public void testSubSetContents() { |
|
577 |
ConcurrentSkipListSet set = set5(); |
|
578 |
SortedSet sm = set.subSet(two, four); |
|
579 |
assertEquals(two, sm.first()); |
|
580 |
assertEquals(three, sm.last()); |
|
581 |
assertEquals(2, sm.size()); |
|
582 |
assertFalse(sm.contains(one)); |
|
583 |
assertTrue(sm.contains(two)); |
|
584 |
assertTrue(sm.contains(three)); |
|
585 |
assertFalse(sm.contains(four)); |
|
586 |
assertFalse(sm.contains(five)); |
|
587 |
Iterator i = sm.iterator(); |
|
588 |
Object k; |
|
589 |
k = (Integer)(i.next()); |
|
590 |
assertEquals(two, k); |
|
591 |
k = (Integer)(i.next()); |
|
592 |
assertEquals(three, k); |
|
593 |
assertFalse(i.hasNext()); |
|
594 |
Iterator j = sm.iterator(); |
|
595 |
j.next(); |
|
596 |
j.remove(); |
|
597 |
assertFalse(set.contains(two)); |
|
598 |
assertEquals(4, set.size()); |
|
599 |
assertEquals(1, sm.size()); |
|
600 |
assertEquals(three, sm.first()); |
|
601 |
assertEquals(three, sm.last()); |
|
602 |
assertTrue(sm.remove(three)); |
|
603 |
assertTrue(sm.isEmpty()); |
|
604 |
assertEquals(3, set.size()); |
|
605 |
} |
|
606 |
||
607 |
public void testSubSetContents2() { |
|
608 |
ConcurrentSkipListSet set = set5(); |
|
609 |
SortedSet sm = set.subSet(two, three); |
|
610 |
assertEquals(1, sm.size()); |
|
611 |
assertEquals(two, sm.first()); |
|
612 |
assertEquals(two, sm.last()); |
|
613 |
assertFalse(sm.contains(one)); |
|
614 |
assertTrue(sm.contains(two)); |
|
615 |
assertFalse(sm.contains(three)); |
|
616 |
assertFalse(sm.contains(four)); |
|
617 |
assertFalse(sm.contains(five)); |
|
618 |
Iterator i = sm.iterator(); |
|
619 |
Object k; |
|
620 |
k = (Integer)(i.next()); |
|
621 |
assertEquals(two, k); |
|
622 |
assertFalse(i.hasNext()); |
|
623 |
Iterator j = sm.iterator(); |
|
624 |
j.next(); |
|
625 |
j.remove(); |
|
626 |
assertFalse(set.contains(two)); |
|
627 |
assertEquals(4, set.size()); |
|
628 |
assertEquals(0, sm.size()); |
|
629 |
assertTrue(sm.isEmpty()); |
|
630 |
assertFalse(sm.remove(three)); |
|
631 |
assertEquals(4, set.size()); |
|
632 |
} |
|
633 |
||
634 |
/** |
|
635 |
* headSet returns set with keys in requested range |
|
636 |
*/ |
|
637 |
public void testHeadSetContents() { |
|
638 |
ConcurrentSkipListSet set = set5(); |
|
639 |
SortedSet sm = set.headSet(four); |
|
640 |
assertTrue(sm.contains(one)); |
|
641 |
assertTrue(sm.contains(two)); |
|
642 |
assertTrue(sm.contains(three)); |
|
643 |
assertFalse(sm.contains(four)); |
|
644 |
assertFalse(sm.contains(five)); |
|
645 |
Iterator i = sm.iterator(); |
|
646 |
Object k; |
|
647 |
k = (Integer)(i.next()); |
|
648 |
assertEquals(one, k); |
|
649 |
k = (Integer)(i.next()); |
|
650 |
assertEquals(two, k); |
|
651 |
k = (Integer)(i.next()); |
|
652 |
assertEquals(three, k); |
|
653 |
assertFalse(i.hasNext()); |
|
654 |
sm.clear(); |
|
655 |
assertTrue(sm.isEmpty()); |
|
656 |
assertEquals(2, set.size()); |
|
657 |
assertEquals(four, set.first()); |
|
658 |
} |
|
659 |
||
660 |
/** |
|
661 |
* tailSet returns set with keys in requested range |
|
662 |
*/ |
|
663 |
public void testTailSetContents() { |
|
664 |
ConcurrentSkipListSet set = set5(); |
|
665 |
SortedSet sm = set.tailSet(two); |
|
666 |
assertFalse(sm.contains(one)); |
|
667 |
assertTrue(sm.contains(two)); |
|
668 |
assertTrue(sm.contains(three)); |
|
669 |
assertTrue(sm.contains(four)); |
|
670 |
assertTrue(sm.contains(five)); |
|
671 |
Iterator i = sm.iterator(); |
|
672 |
Object k; |
|
673 |
k = (Integer)(i.next()); |
|
674 |
assertEquals(two, k); |
|
675 |
k = (Integer)(i.next()); |
|
676 |
assertEquals(three, k); |
|
677 |
k = (Integer)(i.next()); |
|
678 |
assertEquals(four, k); |
|
679 |
k = (Integer)(i.next()); |
|
680 |
assertEquals(five, k); |
|
681 |
assertFalse(i.hasNext()); |
|
682 |
||
683 |
SortedSet ssm = sm.tailSet(four); |
|
684 |
assertEquals(four, ssm.first()); |
|
685 |
assertEquals(five, ssm.last()); |
|
686 |
assertTrue(ssm.remove(four)); |
|
687 |
assertEquals(1, ssm.size()); |
|
688 |
assertEquals(3, sm.size()); |
|
689 |
assertEquals(4, set.size()); |
|
690 |
} |
|
691 |
||
692 |
Random rnd = new Random(666); |
|
693 |
||
694 |
/** |
|
695 |
* Subsets of subsets subdivide correctly |
|
696 |
*/ |
|
697 |
public void testRecursiveSubSets() throws Exception { |
|
698 |
int setSize = expensiveTests ? 1000 : 100; |
|
699 |
Class cl = ConcurrentSkipListSet.class; |
|
700 |
||
701 |
NavigableSet<Integer> set = newSet(cl); |
|
702 |
BitSet bs = new BitSet(setSize); |
|
703 |
||
704 |
populate(set, setSize, bs); |
|
705 |
check(set, 0, setSize - 1, true, bs); |
|
706 |
check(set.descendingSet(), 0, setSize - 1, false, bs); |
|
707 |
||
708 |
mutateSet(set, 0, setSize - 1, bs); |
|
709 |
check(set, 0, setSize - 1, true, bs); |
|
710 |
check(set.descendingSet(), 0, setSize - 1, false, bs); |
|
711 |
||
712 |
bashSubSet(set.subSet(0, true, setSize, false), |
|
713 |
0, setSize - 1, true, bs); |
|
714 |
} |
|
715 |
||
716 |
/** |
|
717 |
* addAll is idempotent |
|
718 |
*/ |
|
719 |
public void testAddAll_idempotent() throws Exception { |
|
720 |
Set x = populatedSet(SIZE); |
|
721 |
Set y = new ConcurrentSkipListSet(x); |
|
722 |
y.addAll(x); |
|
723 |
assertEquals(x, y); |
|
724 |
assertEquals(y, x); |
|
725 |
} |
|
726 |
||
727 |
static NavigableSet<Integer> newSet(Class cl) throws Exception { |
|
41131
87edc8451f8a
8165919: Miscellaneous changes imported from jsr166 CVS 2016-09-21
dl
parents:
39039
diff
changeset
|
728 |
NavigableSet<Integer> result = |
87edc8451f8a
8165919: Miscellaneous changes imported from jsr166 CVS 2016-09-21
dl
parents:
39039
diff
changeset
|
729 |
(NavigableSet<Integer>) cl.getConstructor().newInstance(); |
35394 | 730 |
assertEquals(0, result.size()); |
731 |
assertFalse(result.iterator().hasNext()); |
|
732 |
return result; |
|
733 |
} |
|
734 |
||
735 |
void populate(NavigableSet<Integer> set, int limit, BitSet bs) { |
|
736 |
for (int i = 0, n = 2 * limit / 3; i < n; i++) { |
|
737 |
int element = rnd.nextInt(limit); |
|
738 |
put(set, element, bs); |
|
739 |
} |
|
740 |
} |
|
741 |
||
742 |
void mutateSet(NavigableSet<Integer> set, int min, int max, BitSet bs) { |
|
743 |
int size = set.size(); |
|
744 |
int rangeSize = max - min + 1; |
|
745 |
||
746 |
// Remove a bunch of entries directly |
|
747 |
for (int i = 0, n = rangeSize / 2; i < n; i++) { |
|
748 |
remove(set, min - 5 + rnd.nextInt(rangeSize + 10), bs); |
|
749 |
} |
|
750 |
||
751 |
// Remove a bunch of entries with iterator |
|
752 |
for (Iterator<Integer> it = set.iterator(); it.hasNext(); ) { |
|
753 |
if (rnd.nextBoolean()) { |
|
754 |
bs.clear(it.next()); |
|
755 |
it.remove(); |
|
756 |
} |
|
757 |
} |
|
758 |
||
759 |
// Add entries till we're back to original size |
|
760 |
while (set.size() < size) { |
|
761 |
int element = min + rnd.nextInt(rangeSize); |
|
762 |
assertTrue(element >= min && element <= max); |
|
763 |
put(set, element, bs); |
|
764 |
} |
|
765 |
} |
|
766 |
||
767 |
void mutateSubSet(NavigableSet<Integer> set, int min, int max, |
|
768 |
BitSet bs) { |
|
769 |
int size = set.size(); |
|
770 |
int rangeSize = max - min + 1; |
|
771 |
||
772 |
// Remove a bunch of entries directly |
|
773 |
for (int i = 0, n = rangeSize / 2; i < n; i++) { |
|
774 |
remove(set, min - 5 + rnd.nextInt(rangeSize + 10), bs); |
|
775 |
} |
|
776 |
||
777 |
// Remove a bunch of entries with iterator |
|
778 |
for (Iterator<Integer> it = set.iterator(); it.hasNext(); ) { |
|
779 |
if (rnd.nextBoolean()) { |
|
780 |
bs.clear(it.next()); |
|
781 |
it.remove(); |
|
782 |
} |
|
783 |
} |
|
784 |
||
785 |
// Add entries till we're back to original size |
|
786 |
while (set.size() < size) { |
|
787 |
int element = min - 5 + rnd.nextInt(rangeSize + 10); |
|
788 |
if (element >= min && element <= max) { |
|
789 |
put(set, element, bs); |
|
790 |
} else { |
|
791 |
try { |
|
792 |
set.add(element); |
|
793 |
shouldThrow(); |
|
794 |
} catch (IllegalArgumentException success) {} |
|
795 |
} |
|
796 |
} |
|
797 |
} |
|
798 |
||
799 |
void put(NavigableSet<Integer> set, int element, BitSet bs) { |
|
800 |
if (set.add(element)) |
|
801 |
bs.set(element); |
|
802 |
} |
|
803 |
||
804 |
void remove(NavigableSet<Integer> set, int element, BitSet bs) { |
|
805 |
if (set.remove(element)) |
|
806 |
bs.clear(element); |
|
807 |
} |
|
808 |
||
809 |
void bashSubSet(NavigableSet<Integer> set, |
|
810 |
int min, int max, boolean ascending, |
|
811 |
BitSet bs) { |
|
812 |
check(set, min, max, ascending, bs); |
|
813 |
check(set.descendingSet(), min, max, !ascending, bs); |
|
814 |
||
815 |
mutateSubSet(set, min, max, bs); |
|
816 |
check(set, min, max, ascending, bs); |
|
817 |
check(set.descendingSet(), min, max, !ascending, bs); |
|
818 |
||
819 |
// Recurse |
|
820 |
if (max - min < 2) |
|
821 |
return; |
|
822 |
int midPoint = (min + max) / 2; |
|
823 |
||
824 |
// headSet - pick direction and endpoint inclusion randomly |
|
825 |
boolean incl = rnd.nextBoolean(); |
|
826 |
NavigableSet<Integer> hm = set.headSet(midPoint, incl); |
|
827 |
if (ascending) { |
|
828 |
if (rnd.nextBoolean()) |
|
829 |
bashSubSet(hm, min, midPoint - (incl ? 0 : 1), true, bs); |
|
830 |
else |
|
831 |
bashSubSet(hm.descendingSet(), min, midPoint - (incl ? 0 : 1), |
|
832 |
false, bs); |
|
833 |
} else { |
|
834 |
if (rnd.nextBoolean()) |
|
835 |
bashSubSet(hm, midPoint + (incl ? 0 : 1), max, false, bs); |
|
836 |
else |
|
837 |
bashSubSet(hm.descendingSet(), midPoint + (incl ? 0 : 1), max, |
|
838 |
true, bs); |
|
839 |
} |
|
840 |
||
841 |
// tailSet - pick direction and endpoint inclusion randomly |
|
842 |
incl = rnd.nextBoolean(); |
|
843 |
NavigableSet<Integer> tm = set.tailSet(midPoint,incl); |
|
844 |
if (ascending) { |
|
845 |
if (rnd.nextBoolean()) |
|
846 |
bashSubSet(tm, midPoint + (incl ? 0 : 1), max, true, bs); |
|
847 |
else |
|
848 |
bashSubSet(tm.descendingSet(), midPoint + (incl ? 0 : 1), max, |
|
849 |
false, bs); |
|
850 |
} else { |
|
851 |
if (rnd.nextBoolean()) { |
|
852 |
bashSubSet(tm, min, midPoint - (incl ? 0 : 1), false, bs); |
|
853 |
} else { |
|
854 |
bashSubSet(tm.descendingSet(), min, midPoint - (incl ? 0 : 1), |
|
855 |
true, bs); |
|
856 |
} |
|
857 |
} |
|
858 |
||
859 |
// subSet - pick direction and endpoint inclusion randomly |
|
860 |
int rangeSize = max - min + 1; |
|
861 |
int[] endpoints = new int[2]; |
|
862 |
endpoints[0] = min + rnd.nextInt(rangeSize); |
|
863 |
endpoints[1] = min + rnd.nextInt(rangeSize); |
|
864 |
Arrays.sort(endpoints); |
|
865 |
boolean lowIncl = rnd.nextBoolean(); |
|
866 |
boolean highIncl = rnd.nextBoolean(); |
|
867 |
if (ascending) { |
|
868 |
NavigableSet<Integer> sm = set.subSet( |
|
869 |
endpoints[0], lowIncl, endpoints[1], highIncl); |
|
870 |
if (rnd.nextBoolean()) |
|
871 |
bashSubSet(sm, endpoints[0] + (lowIncl ? 0 : 1), |
|
872 |
endpoints[1] - (highIncl ? 0 : 1), true, bs); |
|
873 |
else |
|
874 |
bashSubSet(sm.descendingSet(), endpoints[0] + (lowIncl ? 0 : 1), |
|
875 |
endpoints[1] - (highIncl ? 0 : 1), false, bs); |
|
876 |
} else { |
|
877 |
NavigableSet<Integer> sm = set.subSet( |
|
878 |
endpoints[1], highIncl, endpoints[0], lowIncl); |
|
879 |
if (rnd.nextBoolean()) |
|
880 |
bashSubSet(sm, endpoints[0] + (lowIncl ? 0 : 1), |
|
881 |
endpoints[1] - (highIncl ? 0 : 1), false, bs); |
|
882 |
else |
|
883 |
bashSubSet(sm.descendingSet(), endpoints[0] + (lowIncl ? 0 : 1), |
|
884 |
endpoints[1] - (highIncl ? 0 : 1), true, bs); |
|
885 |
} |
|
886 |
} |
|
887 |
||
888 |
/** |
|
889 |
* min and max are both inclusive. If max < min, interval is empty. |
|
890 |
*/ |
|
891 |
void check(NavigableSet<Integer> set, |
|
892 |
final int min, final int max, final boolean ascending, |
|
893 |
final BitSet bs) { |
|
894 |
class ReferenceSet { |
|
895 |
int lower(int element) { |
|
896 |
return ascending ? |
|
897 |
lowerAscending(element) : higherAscending(element); |
|
898 |
} |
|
899 |
int floor(int element) { |
|
900 |
return ascending ? |
|
901 |
floorAscending(element) : ceilingAscending(element); |
|
902 |
} |
|
903 |
int ceiling(int element) { |
|
904 |
return ascending ? |
|
905 |
ceilingAscending(element) : floorAscending(element); |
|
906 |
} |
|
907 |
int higher(int element) { |
|
908 |
return ascending ? |
|
909 |
higherAscending(element) : lowerAscending(element); |
|
910 |
} |
|
911 |
int first() { |
|
912 |
return ascending ? firstAscending() : lastAscending(); |
|
913 |
} |
|
914 |
int last() { |
|
915 |
return ascending ? lastAscending() : firstAscending(); |
|
916 |
} |
|
917 |
int lowerAscending(int element) { |
|
918 |
return floorAscending(element - 1); |
|
919 |
} |
|
920 |
int floorAscending(int element) { |
|
921 |
if (element < min) |
|
922 |
return -1; |
|
923 |
else if (element > max) |
|
924 |
element = max; |
|
925 |
||
926 |
// BitSet should support this! Test would run much faster |
|
927 |
while (element >= min) { |
|
928 |
if (bs.get(element)) |
|
929 |
return element; |
|
930 |
element--; |
|
931 |
} |
|
932 |
return -1; |
|
933 |
} |
|
934 |
int ceilingAscending(int element) { |
|
935 |
if (element < min) |
|
936 |
element = min; |
|
937 |
else if (element > max) |
|
938 |
return -1; |
|
939 |
int result = bs.nextSetBit(element); |
|
940 |
return result > max ? -1 : result; |
|
941 |
} |
|
942 |
int higherAscending(int element) { |
|
943 |
return ceilingAscending(element + 1); |
|
944 |
} |
|
945 |
private int firstAscending() { |
|
946 |
int result = ceilingAscending(min); |
|
947 |
return result > max ? -1 : result; |
|
948 |
} |
|
949 |
private int lastAscending() { |
|
950 |
int result = floorAscending(max); |
|
951 |
return result < min ? -1 : result; |
|
952 |
} |
|
953 |
} |
|
954 |
ReferenceSet rs = new ReferenceSet(); |
|
955 |
||
956 |
// Test contents using containsElement |
|
957 |
int size = 0; |
|
958 |
for (int i = min; i <= max; i++) { |
|
959 |
boolean bsContainsI = bs.get(i); |
|
960 |
assertEquals(bsContainsI, set.contains(i)); |
|
961 |
if (bsContainsI) |
|
962 |
size++; |
|
963 |
} |
|
964 |
assertEquals(size, set.size()); |
|
965 |
||
966 |
// Test contents using contains elementSet iterator |
|
967 |
int size2 = 0; |
|
968 |
int previousElement = -1; |
|
969 |
for (int element : set) { |
|
970 |
assertTrue(bs.get(element)); |
|
971 |
size2++; |
|
972 |
assertTrue(previousElement < 0 || (ascending ? |
|
973 |
element - previousElement > 0 : element - previousElement < 0)); |
|
974 |
previousElement = element; |
|
975 |
} |
|
976 |
assertEquals(size2, size); |
|
977 |
||
978 |
// Test navigation ops |
|
979 |
for (int element = min - 1; element <= max + 1; element++) { |
|
980 |
assertEq(set.lower(element), rs.lower(element)); |
|
981 |
assertEq(set.floor(element), rs.floor(element)); |
|
982 |
assertEq(set.higher(element), rs.higher(element)); |
|
983 |
assertEq(set.ceiling(element), rs.ceiling(element)); |
|
984 |
} |
|
985 |
||
986 |
// Test extrema |
|
987 |
if (set.size() != 0) { |
|
988 |
assertEq(set.first(), rs.first()); |
|
989 |
assertEq(set.last(), rs.last()); |
|
990 |
} else { |
|
991 |
assertEq(rs.first(), -1); |
|
992 |
assertEq(rs.last(), -1); |
|
993 |
try { |
|
994 |
set.first(); |
|
995 |
shouldThrow(); |
|
996 |
} catch (NoSuchElementException success) {} |
|
997 |
try { |
|
998 |
set.last(); |
|
999 |
shouldThrow(); |
|
1000 |
} catch (NoSuchElementException success) {} |
|
1001 |
} |
|
1002 |
} |
|
1003 |
||
1004 |
static void assertEq(Integer i, int j) { |
|
1005 |
if (i == null) |
|
1006 |
assertEquals(j, -1); |
|
1007 |
else |
|
1008 |
assertEquals((int) i, j); |
|
1009 |
} |
|
1010 |
||
1011 |
static boolean eq(Integer i, int j) { |
|
1012 |
return (i == null) ? j == -1 : i == j; |
|
1013 |
} |
|
1014 |
||
1015 |
} |