| /* |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * This file is available under and governed by the GNU General Public |
| * License version 2 only, as published by the Free Software Foundation. |
| * However, the following notice accompanied the original version of this |
| * file: |
| * |
| * Written by Doug Lea with assistance from members of JCP JSR-166 |
| * Expert Group and released to the public domain, as explained at |
| * http://creativecommons.org/publicdomain/zero/1.0/ |
| */ |
| |
| import java.util.Arrays; |
| import java.util.Comparator; |
| import java.util.Iterator; |
| import java.util.NavigableSet; |
| import java.util.SortedSet; |
| import java.util.concurrent.ConcurrentSkipListSet; |
| |
| import junit.framework.Test; |
| import junit.framework.TestSuite; |
| |
| public class ConcurrentSkipListSubSetTest extends JSR166TestCase { |
| public static void main(String[] args) { |
| main(suite(), args); |
| } |
| public static Test suite() { |
| return new TestSuite(ConcurrentSkipListSubSetTest.class); |
| } |
| |
| static class MyReverseComparator implements Comparator { |
| public int compare(Object x, Object y) { |
| return ((Comparable)y).compareTo(x); |
| } |
| } |
| |
| /** |
| * Returns a new set of given size containing consecutive |
| * Integers 0 ... n - 1. |
| */ |
| private static NavigableSet<Integer> populatedSet(int n) { |
| ConcurrentSkipListSet<Integer> q = |
| new ConcurrentSkipListSet<Integer>(); |
| assertTrue(q.isEmpty()); |
| |
| for (int i = n - 1; i >= 0; i -= 2) |
| assertTrue(q.add(new Integer(i))); |
| for (int i = (n & 1); i < n; i += 2) |
| assertTrue(q.add(new Integer(i))); |
| assertTrue(q.add(new Integer(-n))); |
| assertTrue(q.add(new Integer(n))); |
| NavigableSet s = q.subSet(new Integer(0), true, new Integer(n), false); |
| assertFalse(s.isEmpty()); |
| assertEquals(n, s.size()); |
| return s; |
| } |
| |
| /** |
| * Returns a new set of first 5 ints. |
| */ |
| private static NavigableSet set5() { |
| ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
| assertTrue(q.isEmpty()); |
| q.add(one); |
| q.add(two); |
| q.add(three); |
| q.add(four); |
| q.add(five); |
| q.add(zero); |
| q.add(seven); |
| NavigableSet s = q.subSet(one, true, seven, false); |
| assertEquals(5, s.size()); |
| return s; |
| } |
| |
| /** |
| * Returns a new set of first 5 negative ints. |
| */ |
| private static NavigableSet dset5() { |
| ConcurrentSkipListSet q = new ConcurrentSkipListSet(); |
| assertTrue(q.isEmpty()); |
| q.add(m1); |
| q.add(m2); |
| q.add(m3); |
| q.add(m4); |
| q.add(m5); |
| NavigableSet s = q.descendingSet(); |
| assertEquals(5, s.size()); |
| return s; |
| } |
| |
| private static NavigableSet set0() { |
| ConcurrentSkipListSet set = new ConcurrentSkipListSet(); |
| assertTrue(set.isEmpty()); |
| return set.tailSet(m1, true); |
| } |
| |
| private static NavigableSet dset0() { |
| ConcurrentSkipListSet set = new ConcurrentSkipListSet(); |
| assertTrue(set.isEmpty()); |
| return set; |
| } |
| |
| /** |
| * A new set has unbounded capacity |
| */ |
| public void testConstructor1() { |
| assertEquals(0, set0().size()); |
| } |
| |
| /** |
| * isEmpty is true before add, false after |
| */ |
| public void testEmpty() { |
| NavigableSet q = set0(); |
| assertTrue(q.isEmpty()); |
| q.add(new Integer(1)); |
| assertFalse(q.isEmpty()); |
| q.add(new Integer(2)); |
| q.pollFirst(); |
| q.pollFirst(); |
| assertTrue(q.isEmpty()); |
| } |
| |
| /** |
| * size changes when elements added and removed |
| */ |
| public void testSize() { |
| NavigableSet q = populatedSet(SIZE); |
| for (int i = 0; i < SIZE; ++i) { |
| assertEquals(SIZE - i, q.size()); |
| q.pollFirst(); |
| } |
| for (int i = 0; i < SIZE; ++i) { |
| assertEquals(i, q.size()); |
| q.add(new Integer(i)); |
| } |
| } |
| |
| /** |
| * add(null) throws NPE |
| */ |
| public void testAddNull() { |
| NavigableSet q = set0(); |
| try { |
| q.add(null); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| |
| /** |
| * Add of comparable element succeeds |
| */ |
| public void testAdd() { |
| NavigableSet q = set0(); |
| assertTrue(q.add(six)); |
| } |
| |
| /** |
| * Add of duplicate element fails |
| */ |
| public void testAddDup() { |
| NavigableSet q = set0(); |
| assertTrue(q.add(six)); |
| assertFalse(q.add(six)); |
| } |
| |
| /** |
| * Add of non-Comparable throws CCE |
| */ |
| public void testAddNonComparable() { |
| NavigableSet q = set0(); |
| try { |
| q.add(new Object()); |
| q.add(new Object()); |
| shouldThrow(); |
| } catch (ClassCastException success) {} |
| } |
| |
| /** |
| * addAll(null) throws NPE |
| */ |
| public void testAddAll1() { |
| NavigableSet q = set0(); |
| try { |
| q.addAll(null); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| |
| /** |
| * addAll of a collection with null elements throws NPE |
| */ |
| public void testAddAll2() { |
| NavigableSet q = set0(); |
| Integer[] ints = new Integer[SIZE]; |
| try { |
| q.addAll(Arrays.asList(ints)); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| |
| /** |
| * addAll of a collection with any null elements throws NPE after |
| * possibly adding some elements |
| */ |
| public void testAddAll3() { |
| NavigableSet q = set0(); |
| Integer[] ints = new Integer[SIZE]; |
| for (int i = 0; i < SIZE - 1; ++i) |
| ints[i] = new Integer(i + SIZE); |
| try { |
| q.addAll(Arrays.asList(ints)); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| |
| /** |
| * Set contains all elements of successful addAll |
| */ |
| public void testAddAll5() { |
| Integer[] empty = new Integer[0]; |
| Integer[] ints = new Integer[SIZE]; |
| for (int i = 0; i < SIZE; ++i) |
| ints[i] = new Integer(SIZE - 1 - i); |
| NavigableSet q = set0(); |
| assertFalse(q.addAll(Arrays.asList(empty))); |
| assertTrue(q.addAll(Arrays.asList(ints))); |
| for (int i = 0; i < SIZE; ++i) |
| assertEquals(new Integer(i), q.pollFirst()); |
| } |
| |
| /** |
| * poll succeeds unless empty |
| */ |
| public void testPoll() { |
| NavigableSet q = populatedSet(SIZE); |
| for (int i = 0; i < SIZE; ++i) { |
| assertEquals(i, q.pollFirst()); |
| } |
| assertNull(q.pollFirst()); |
| } |
| |
| /** |
| * remove(x) removes x and returns true if present |
| */ |
| public void testRemoveElement() { |
| NavigableSet q = populatedSet(SIZE); |
| for (int i = 1; i < SIZE; i += 2) { |
| assertTrue(q.contains(i)); |
| assertTrue(q.remove(i)); |
| assertFalse(q.contains(i)); |
| assertTrue(q.contains(i - 1)); |
| } |
| for (int i = 0; i < SIZE; i += 2) { |
| assertTrue(q.contains(i)); |
| assertTrue(q.remove(i)); |
| assertFalse(q.contains(i)); |
| assertFalse(q.remove(i + 1)); |
| assertFalse(q.contains(i + 1)); |
| } |
| assertTrue(q.isEmpty()); |
| } |
| |
| /** |
| * contains(x) reports true when elements added but not yet removed |
| */ |
| public void testContains() { |
| NavigableSet q = populatedSet(SIZE); |
| for (int i = 0; i < SIZE; ++i) { |
| assertTrue(q.contains(new Integer(i))); |
| q.pollFirst(); |
| assertFalse(q.contains(new Integer(i))); |
| } |
| } |
| |
| /** |
| * clear removes all elements |
| */ |
| public void testClear() { |
| NavigableSet q = populatedSet(SIZE); |
| q.clear(); |
| assertTrue(q.isEmpty()); |
| assertEquals(0, q.size()); |
| q.add(new Integer(1)); |
| assertFalse(q.isEmpty()); |
| q.clear(); |
| assertTrue(q.isEmpty()); |
| } |
| |
| /** |
| * containsAll(c) is true when c contains a subset of elements |
| */ |
| public void testContainsAll() { |
| NavigableSet q = populatedSet(SIZE); |
| NavigableSet p = set0(); |
| for (int i = 0; i < SIZE; ++i) { |
| assertTrue(q.containsAll(p)); |
| assertFalse(p.containsAll(q)); |
| p.add(new Integer(i)); |
| } |
| assertTrue(p.containsAll(q)); |
| } |
| |
| /** |
| * retainAll(c) retains only those elements of c and reports true if changed |
| */ |
| public void testRetainAll() { |
| NavigableSet q = populatedSet(SIZE); |
| NavigableSet p = populatedSet(SIZE); |
| for (int i = 0; i < SIZE; ++i) { |
| boolean changed = q.retainAll(p); |
| if (i == 0) |
| assertFalse(changed); |
| else |
| assertTrue(changed); |
| |
| assertTrue(q.containsAll(p)); |
| assertEquals(SIZE - i, q.size()); |
| p.pollFirst(); |
| } |
| } |
| |
| /** |
| * removeAll(c) removes only those elements of c and reports true if changed |
| */ |
| public void testRemoveAll() { |
| for (int i = 1; i < SIZE; ++i) { |
| NavigableSet q = populatedSet(SIZE); |
| NavigableSet p = populatedSet(i); |
| assertTrue(q.removeAll(p)); |
| assertEquals(SIZE - i, q.size()); |
| for (int j = 0; j < i; ++j) { |
| Integer x = (Integer)(p.pollFirst()); |
| assertFalse(q.contains(x)); |
| } |
| } |
| } |
| |
| /** |
| * lower returns preceding element |
| */ |
| public void testLower() { |
| NavigableSet q = set5(); |
| Object e1 = q.lower(three); |
| assertEquals(two, e1); |
| |
| Object e2 = q.lower(six); |
| assertEquals(five, e2); |
| |
| Object e3 = q.lower(one); |
| assertNull(e3); |
| |
| Object e4 = q.lower(zero); |
| assertNull(e4); |
| } |
| |
| /** |
| * higher returns next element |
| */ |
| public void testHigher() { |
| NavigableSet q = set5(); |
| Object e1 = q.higher(three); |
| assertEquals(four, e1); |
| |
| Object e2 = q.higher(zero); |
| assertEquals(one, e2); |
| |
| Object e3 = q.higher(five); |
| assertNull(e3); |
| |
| Object e4 = q.higher(six); |
| assertNull(e4); |
| } |
| |
| /** |
| * floor returns preceding element |
| */ |
| public void testFloor() { |
| NavigableSet q = set5(); |
| Object e1 = q.floor(three); |
| assertEquals(three, e1); |
| |
| Object e2 = q.floor(six); |
| assertEquals(five, e2); |
| |
| Object e3 = q.floor(one); |
| assertEquals(one, e3); |
| |
| Object e4 = q.floor(zero); |
| assertNull(e4); |
| } |
| |
| /** |
| * ceiling returns next element |
| */ |
| public void testCeiling() { |
| NavigableSet q = set5(); |
| Object e1 = q.ceiling(three); |
| assertEquals(three, e1); |
| |
| Object e2 = q.ceiling(zero); |
| assertEquals(one, e2); |
| |
| Object e3 = q.ceiling(five); |
| assertEquals(five, e3); |
| |
| Object e4 = q.ceiling(six); |
| assertNull(e4); |
| } |
| |
| /** |
| * toArray contains all elements in sorted order |
| */ |
| public void testToArray() { |
| NavigableSet q = populatedSet(SIZE); |
| Object[] o = q.toArray(); |
| for (int i = 0; i < o.length; i++) |
| assertSame(o[i], q.pollFirst()); |
| } |
| |
| /** |
| * toArray(a) contains all elements in sorted order |
| */ |
| public void testToArray2() { |
| NavigableSet<Integer> q = populatedSet(SIZE); |
| Integer[] ints = new Integer[SIZE]; |
| Integer[] array = q.toArray(ints); |
| assertSame(ints, array); |
| for (int i = 0; i < ints.length; i++) |
| assertSame(ints[i], q.pollFirst()); |
| } |
| |
| /** |
| * iterator iterates through all elements |
| */ |
| public void testIterator() { |
| NavigableSet q = populatedSet(SIZE); |
| Iterator it = q.iterator(); |
| int i; |
| for (i = 0; it.hasNext(); i++) |
| assertTrue(q.contains(it.next())); |
| assertEquals(i, SIZE); |
| assertIteratorExhausted(it); |
| } |
| |
| /** |
| * iterator of empty set has no elements |
| */ |
| public void testEmptyIterator() { |
| assertIteratorExhausted(set0().iterator()); |
| } |
| |
| /** |
| * iterator.remove removes current element |
| */ |
| public void testIteratorRemove() { |
| final NavigableSet q = set0(); |
| q.add(new Integer(2)); |
| q.add(new Integer(1)); |
| q.add(new Integer(3)); |
| |
| Iterator it = q.iterator(); |
| it.next(); |
| it.remove(); |
| |
| it = q.iterator(); |
| assertEquals(it.next(), new Integer(2)); |
| assertEquals(it.next(), new Integer(3)); |
| assertFalse(it.hasNext()); |
| } |
| |
| /** |
| * toString contains toStrings of elements |
| */ |
| public void testToString() { |
| NavigableSet q = populatedSet(SIZE); |
| String s = q.toString(); |
| for (int i = 0; i < SIZE; ++i) { |
| assertTrue(s.contains(String.valueOf(i))); |
| } |
| } |
| |
| /** |
| * A deserialized/reserialized set equals original |
| */ |
| public void testSerialization() throws Exception { |
| NavigableSet x = populatedSet(SIZE); |
| NavigableSet y = serialClone(x); |
| |
| assertNotSame(y, x); |
| assertEquals(x.size(), y.size()); |
| assertEquals(x, y); |
| assertEquals(y, x); |
| while (!x.isEmpty()) { |
| assertFalse(y.isEmpty()); |
| assertEquals(x.pollFirst(), y.pollFirst()); |
| } |
| assertTrue(y.isEmpty()); |
| } |
| |
| /** |
| * subSet returns set with keys in requested range |
| */ |
| public void testSubSetContents() { |
| NavigableSet set = set5(); |
| SortedSet sm = set.subSet(two, four); |
| assertEquals(two, sm.first()); |
| assertEquals(three, sm.last()); |
| assertEquals(2, sm.size()); |
| assertFalse(sm.contains(one)); |
| assertTrue(sm.contains(two)); |
| assertTrue(sm.contains(three)); |
| assertFalse(sm.contains(four)); |
| assertFalse(sm.contains(five)); |
| Iterator i = sm.iterator(); |
| Object k; |
| k = (Integer)(i.next()); |
| assertEquals(two, k); |
| k = (Integer)(i.next()); |
| assertEquals(three, k); |
| assertFalse(i.hasNext()); |
| Iterator j = sm.iterator(); |
| j.next(); |
| j.remove(); |
| assertFalse(set.contains(two)); |
| assertEquals(4, set.size()); |
| assertEquals(1, sm.size()); |
| assertEquals(three, sm.first()); |
| assertEquals(three, sm.last()); |
| assertTrue(sm.remove(three)); |
| assertTrue(sm.isEmpty()); |
| assertEquals(3, set.size()); |
| } |
| |
| public void testSubSetContents2() { |
| NavigableSet set = set5(); |
| SortedSet sm = set.subSet(two, three); |
| assertEquals(1, sm.size()); |
| assertEquals(two, sm.first()); |
| assertEquals(two, sm.last()); |
| assertFalse(sm.contains(one)); |
| assertTrue(sm.contains(two)); |
| assertFalse(sm.contains(three)); |
| assertFalse(sm.contains(four)); |
| assertFalse(sm.contains(five)); |
| Iterator i = sm.iterator(); |
| Object k; |
| k = (Integer)(i.next()); |
| assertEquals(two, k); |
| assertFalse(i.hasNext()); |
| Iterator j = sm.iterator(); |
| j.next(); |
| j.remove(); |
| assertFalse(set.contains(two)); |
| assertEquals(4, set.size()); |
| assertEquals(0, sm.size()); |
| assertTrue(sm.isEmpty()); |
| assertFalse(sm.remove(three)); |
| assertEquals(4, set.size()); |
| } |
| |
| /** |
| * headSet returns set with keys in requested range |
| */ |
| public void testHeadSetContents() { |
| NavigableSet set = set5(); |
| SortedSet sm = set.headSet(four); |
| assertTrue(sm.contains(one)); |
| assertTrue(sm.contains(two)); |
| assertTrue(sm.contains(three)); |
| assertFalse(sm.contains(four)); |
| assertFalse(sm.contains(five)); |
| Iterator i = sm.iterator(); |
| Object k; |
| k = (Integer)(i.next()); |
| assertEquals(one, k); |
| k = (Integer)(i.next()); |
| assertEquals(two, k); |
| k = (Integer)(i.next()); |
| assertEquals(three, k); |
| assertFalse(i.hasNext()); |
| sm.clear(); |
| assertTrue(sm.isEmpty()); |
| assertEquals(2, set.size()); |
| assertEquals(four, set.first()); |
| } |
| |
| /** |
| * tailSet returns set with keys in requested range |
| */ |
| public void testTailSetContents() { |
| NavigableSet set = set5(); |
| SortedSet sm = set.tailSet(two); |
| assertFalse(sm.contains(one)); |
| assertTrue(sm.contains(two)); |
| assertTrue(sm.contains(three)); |
| assertTrue(sm.contains(four)); |
| assertTrue(sm.contains(five)); |
| Iterator i = sm.iterator(); |
| Object k; |
| k = (Integer)(i.next()); |
| assertEquals(two, k); |
| k = (Integer)(i.next()); |
| assertEquals(three, k); |
| k = (Integer)(i.next()); |
| assertEquals(four, k); |
| k = (Integer)(i.next()); |
| assertEquals(five, k); |
| assertFalse(i.hasNext()); |
| |
| SortedSet ssm = sm.tailSet(four); |
| assertEquals(four, ssm.first()); |
| assertEquals(five, ssm.last()); |
| assertTrue(ssm.remove(four)); |
| assertEquals(1, ssm.size()); |
| assertEquals(3, sm.size()); |
| assertEquals(4, set.size()); |
| } |
| |
| /** |
| * size changes when elements added and removed |
| */ |
| public void testDescendingSize() { |
| NavigableSet q = populatedSet(SIZE); |
| for (int i = 0; i < SIZE; ++i) { |
| assertEquals(SIZE - i, q.size()); |
| q.pollFirst(); |
| } |
| for (int i = 0; i < SIZE; ++i) { |
| assertEquals(i, q.size()); |
| q.add(new Integer(i)); |
| } |
| } |
| |
| /** |
| * add(null) throws NPE |
| */ |
| public void testDescendingAddNull() { |
| NavigableSet q = dset0(); |
| try { |
| q.add(null); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| |
| /** |
| * Add of comparable element succeeds |
| */ |
| public void testDescendingAdd() { |
| NavigableSet q = dset0(); |
| assertTrue(q.add(m6)); |
| } |
| |
| /** |
| * Add of duplicate element fails |
| */ |
| public void testDescendingAddDup() { |
| NavigableSet q = dset0(); |
| assertTrue(q.add(m6)); |
| assertFalse(q.add(m6)); |
| } |
| |
| /** |
| * Add of non-Comparable throws CCE |
| */ |
| public void testDescendingAddNonComparable() { |
| NavigableSet q = dset0(); |
| try { |
| q.add(new Object()); |
| q.add(new Object()); |
| shouldThrow(); |
| } catch (ClassCastException success) {} |
| } |
| |
| /** |
| * addAll(null) throws NPE |
| */ |
| public void testDescendingAddAll1() { |
| NavigableSet q = dset0(); |
| try { |
| q.addAll(null); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| |
| /** |
| * addAll of a collection with null elements throws NPE |
| */ |
| public void testDescendingAddAll2() { |
| NavigableSet q = dset0(); |
| Integer[] ints = new Integer[SIZE]; |
| try { |
| q.addAll(Arrays.asList(ints)); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| |
| /** |
| * addAll of a collection with any null elements throws NPE after |
| * possibly adding some elements |
| */ |
| public void testDescendingAddAll3() { |
| NavigableSet q = dset0(); |
| Integer[] ints = new Integer[SIZE]; |
| for (int i = 0; i < SIZE - 1; ++i) |
| ints[i] = new Integer(i + SIZE); |
| try { |
| q.addAll(Arrays.asList(ints)); |
| shouldThrow(); |
| } catch (NullPointerException success) {} |
| } |
| |
| /** |
| * Set contains all elements of successful addAll |
| */ |
| public void testDescendingAddAll5() { |
| Integer[] empty = new Integer[0]; |
| Integer[] ints = new Integer[SIZE]; |
| for (int i = 0; i < SIZE; ++i) |
| ints[i] = new Integer(SIZE - 1 - i); |
| NavigableSet q = dset0(); |
| assertFalse(q.addAll(Arrays.asList(empty))); |
| assertTrue(q.addAll(Arrays.asList(ints))); |
| for (int i = 0; i < SIZE; ++i) |
| assertEquals(new Integer(i), q.pollFirst()); |
| } |
| |
| /** |
| * poll succeeds unless empty |
| */ |
| public void testDescendingPoll() { |
| NavigableSet q = populatedSet(SIZE); |
| for (int i = 0; i < SIZE; ++i) { |
| assertEquals(i, q.pollFirst()); |
| } |
| assertNull(q.pollFirst()); |
| } |
| |
| /** |
| * remove(x) removes x and returns true if present |
| */ |
| public void testDescendingRemoveElement() { |
| NavigableSet q = populatedSet(SIZE); |
| for (int i = 1; i < SIZE; i += 2) { |
| assertTrue(q.remove(new Integer(i))); |
| } |
| for (int i = 0; i < SIZE; i += 2 ) { |
| assertTrue(q.remove(new Integer(i))); |
| assertFalse(q.remove(new Integer(i + 1))); |
| } |
| assertTrue(q.isEmpty()); |
| } |
| |
| /** |
| * contains(x) reports true when elements added but not yet removed |
| */ |
| public void testDescendingContains() { |
| NavigableSet q = populatedSet(SIZE); |
| for (int i = 0; i < SIZE; ++i) { |
| assertTrue(q.contains(new Integer(i))); |
| q.pollFirst(); |
| assertFalse(q.contains(new Integer(i))); |
| } |
| } |
| |
| /** |
| * clear removes all elements |
| */ |
| public void testDescendingClear() { |
| NavigableSet q = populatedSet(SIZE); |
| q.clear(); |
| assertTrue(q.isEmpty()); |
| assertEquals(0, q.size()); |
| q.add(new Integer(1)); |
| assertFalse(q.isEmpty()); |
| q.clear(); |
| assertTrue(q.isEmpty()); |
| } |
| |
| /** |
| * containsAll(c) is true when c contains a subset of elements |
| */ |
| public void testDescendingContainsAll() { |
| NavigableSet q = populatedSet(SIZE); |
| NavigableSet p = dset0(); |
| for (int i = 0; i < SIZE; ++i) { |
| assertTrue(q.containsAll(p)); |
| assertFalse(p.containsAll(q)); |
| p.add(new Integer(i)); |
| } |
| assertTrue(p.containsAll(q)); |
| } |
| |
| /** |
| * retainAll(c) retains only those elements of c and reports true if changed |
| */ |
| public void testDescendingRetainAll() { |
| NavigableSet q = populatedSet(SIZE); |
| NavigableSet p = populatedSet(SIZE); |
| for (int i = 0; i < SIZE; ++i) { |
| boolean changed = q.retainAll(p); |
| if (i == 0) |
| assertFalse(changed); |
| else |
| assertTrue(changed); |
| |
| assertTrue(q.containsAll(p)); |
| assertEquals(SIZE - i, q.size()); |
| p.pollFirst(); |
| } |
| } |
| |
| /** |
| * removeAll(c) removes only those elements of c and reports true if changed |
| */ |
| public void testDescendingRemoveAll() { |
| for (int i = 1; i < SIZE; ++i) { |
| NavigableSet q = populatedSet(SIZE); |
| NavigableSet p = populatedSet(i); |
| assertTrue(q.removeAll(p)); |
| assertEquals(SIZE - i, q.size()); |
| for (int j = 0; j < i; ++j) { |
| Integer x = (Integer)(p.pollFirst()); |
| assertFalse(q.contains(x)); |
| } |
| } |
| } |
| |
| /** |
| * lower returns preceding element |
| */ |
| public void testDescendingLower() { |
| NavigableSet q = dset5(); |
| Object e1 = q.lower(m3); |
| assertEquals(m2, e1); |
| |
| Object e2 = q.lower(m6); |
| assertEquals(m5, e2); |
| |
| Object e3 = q.lower(m1); |
| assertNull(e3); |
| |
| Object e4 = q.lower(zero); |
| assertNull(e4); |
| } |
| |
| /** |
| * higher returns next element |
| */ |
| public void testDescendingHigher() { |
| NavigableSet q = dset5(); |
| Object e1 = q.higher(m3); |
| assertEquals(m4, e1); |
| |
| Object e2 = q.higher(zero); |
| assertEquals(m1, e2); |
| |
| Object e3 = q.higher(m5); |
| assertNull(e3); |
| |
| Object e4 = q.higher(m6); |
| assertNull(e4); |
| } |
| |
| /** |
| * floor returns preceding element |
| */ |
| public void testDescendingFloor() { |
| NavigableSet q = dset5(); |
| Object e1 = q.floor(m3); |
| assertEquals(m3, e1); |
| |
| Object e2 = q.floor(m6); |
| assertEquals(m5, e2); |
| |
| Object e3 = q.floor(m1); |
| assertEquals(m1, e3); |
| |
| Object e4 = q.floor(zero); |
| assertNull(e4); |
| } |
| |
| /** |
| * ceiling returns next element |
| */ |
| public void testDescendingCeiling() { |
| NavigableSet q = dset5(); |
| Object e1 = q.ceiling(m3); |
| assertEquals(m3, e1); |
| |
| Object e2 = q.ceiling(zero); |
| assertEquals(m1, e2); |
| |
| Object e3 = q.ceiling(m5); |
| assertEquals(m5, e3); |
| |
| Object e4 = q.ceiling(m6); |
| assertNull(e4); |
| } |
| |
| /** |
| * toArray contains all elements |
| */ |
| public void testDescendingToArray() { |
| NavigableSet q = populatedSet(SIZE); |
| Object[] o = q.toArray(); |
| Arrays.sort(o); |
| for (int i = 0; i < o.length; i++) |
| assertEquals(o[i], q.pollFirst()); |
| } |
| |
| /** |
| * toArray(a) contains all elements |
| */ |
| public void testDescendingToArray2() { |
| NavigableSet q = populatedSet(SIZE); |
| Integer[] ints = new Integer[SIZE]; |
| assertSame(ints, q.toArray(ints)); |
| Arrays.sort(ints); |
| for (int i = 0; i < ints.length; i++) |
| assertEquals(ints[i], q.pollFirst()); |
| } |
| |
| /** |
| * iterator iterates through all elements |
| */ |
| public void testDescendingIterator() { |
| NavigableSet q = populatedSet(SIZE); |
| int i = 0; |
| Iterator it = q.iterator(); |
| while (it.hasNext()) { |
| assertTrue(q.contains(it.next())); |
| ++i; |
| } |
| assertEquals(i, SIZE); |
| } |
| |
| /** |
| * iterator of empty set has no elements |
| */ |
| public void testDescendingEmptyIterator() { |
| NavigableSet q = dset0(); |
| int i = 0; |
| Iterator it = q.iterator(); |
| while (it.hasNext()) { |
| assertTrue(q.contains(it.next())); |
| ++i; |
| } |
| assertEquals(0, i); |
| } |
| |
| /** |
| * iterator.remove removes current element |
| */ |
| public void testDescendingIteratorRemove() { |
| final NavigableSet q = dset0(); |
| q.add(new Integer(2)); |
| q.add(new Integer(1)); |
| q.add(new Integer(3)); |
| |
| Iterator it = q.iterator(); |
| it.next(); |
| it.remove(); |
| |
| it = q.iterator(); |
| assertEquals(it.next(), new Integer(2)); |
| assertEquals(it.next(), new Integer(3)); |
| assertFalse(it.hasNext()); |
| } |
| |
| /** |
| * toString contains toStrings of elements |
| */ |
| public void testDescendingToString() { |
| NavigableSet q = populatedSet(SIZE); |
| String s = q.toString(); |
| for (int i = 0; i < SIZE; ++i) { |
| assertTrue(s.contains(String.valueOf(i))); |
| } |
| } |
| |
| /** |
| * A deserialized/reserialized set equals original |
| */ |
| public void testDescendingSerialization() throws Exception { |
| NavigableSet x = dset5(); |
| NavigableSet y = serialClone(x); |
| |
| assertNotSame(y, x); |
| assertEquals(x.size(), y.size()); |
| assertEquals(x, y); |
| assertEquals(y, x); |
| while (!x.isEmpty()) { |
| assertFalse(y.isEmpty()); |
| assertEquals(x.pollFirst(), y.pollFirst()); |
| } |
| assertTrue(y.isEmpty()); |
| } |
| |
| /** |
| * subSet returns set with keys in requested range |
| */ |
| public void testDescendingSubSetContents() { |
| NavigableSet set = dset5(); |
| SortedSet sm = set.subSet(m2, m4); |
| assertEquals(m2, sm.first()); |
| assertEquals(m3, sm.last()); |
| assertEquals(2, sm.size()); |
| assertFalse(sm.contains(m1)); |
| assertTrue(sm.contains(m2)); |
| assertTrue(sm.contains(m3)); |
| assertFalse(sm.contains(m4)); |
| assertFalse(sm.contains(m5)); |
| Iterator i = sm.iterator(); |
| Object k; |
| k = (Integer)(i.next()); |
| assertEquals(m2, k); |
| k = (Integer)(i.next()); |
| assertEquals(m3, k); |
| assertFalse(i.hasNext()); |
| Iterator j = sm.iterator(); |
| j.next(); |
| j.remove(); |
| assertFalse(set.contains(m2)); |
| assertEquals(4, set.size()); |
| assertEquals(1, sm.size()); |
| assertEquals(m3, sm.first()); |
| assertEquals(m3, sm.last()); |
| assertTrue(sm.remove(m3)); |
| assertTrue(sm.isEmpty()); |
| assertEquals(3, set.size()); |
| } |
| |
| public void testDescendingSubSetContents2() { |
| NavigableSet set = dset5(); |
| SortedSet sm = set.subSet(m2, m3); |
| assertEquals(1, sm.size()); |
| assertEquals(m2, sm.first()); |
| assertEquals(m2, sm.last()); |
| assertFalse(sm.contains(m1)); |
| assertTrue(sm.contains(m2)); |
| assertFalse(sm.contains(m3)); |
| assertFalse(sm.contains(m4)); |
| assertFalse(sm.contains(m5)); |
| Iterator i = sm.iterator(); |
| Object k; |
| k = (Integer)(i.next()); |
| assertEquals(m2, k); |
| assertFalse(i.hasNext()); |
| Iterator j = sm.iterator(); |
| j.next(); |
| j.remove(); |
| assertFalse(set.contains(m2)); |
| assertEquals(4, set.size()); |
| assertEquals(0, sm.size()); |
| assertTrue(sm.isEmpty()); |
| assertFalse(sm.remove(m3)); |
| assertEquals(4, set.size()); |
| } |
| |
| /** |
| * headSet returns set with keys in requested range |
| */ |
| public void testDescendingHeadSetContents() { |
| NavigableSet set = dset5(); |
| SortedSet sm = set.headSet(m4); |
| assertTrue(sm.contains(m1)); |
| assertTrue(sm.contains(m2)); |
| assertTrue(sm.contains(m3)); |
| assertFalse(sm.contains(m4)); |
| assertFalse(sm.contains(m5)); |
| Iterator i = sm.iterator(); |
| Object k; |
| k = (Integer)(i.next()); |
| assertEquals(m1, k); |
| k = (Integer)(i.next()); |
| assertEquals(m2, k); |
| k = (Integer)(i.next()); |
| assertEquals(m3, k); |
| assertFalse(i.hasNext()); |
| sm.clear(); |
| assertTrue(sm.isEmpty()); |
| assertEquals(2, set.size()); |
| assertEquals(m4, set.first()); |
| } |
| |
| /** |
| * tailSet returns set with keys in requested range |
| */ |
| public void testDescendingTailSetContents() { |
| NavigableSet set = dset5(); |
| SortedSet sm = set.tailSet(m2); |
| assertFalse(sm.contains(m1)); |
| assertTrue(sm.contains(m2)); |
| assertTrue(sm.contains(m3)); |
| assertTrue(sm.contains(m4)); |
| assertTrue(sm.contains(m5)); |
| Iterator i = sm.iterator(); |
| Object k; |
| k = (Integer)(i.next()); |
| assertEquals(m2, k); |
| k = (Integer)(i.next()); |
| assertEquals(m3, k); |
| k = (Integer)(i.next()); |
| assertEquals(m4, k); |
| k = (Integer)(i.next()); |
| assertEquals(m5, k); |
| assertFalse(i.hasNext()); |
| |
| SortedSet ssm = sm.tailSet(m4); |
| assertEquals(m4, ssm.first()); |
| assertEquals(m5, ssm.last()); |
| assertTrue(ssm.remove(m4)); |
| assertEquals(1, ssm.size()); |
| assertEquals(3, sm.size()); |
| assertEquals(4, set.size()); |
| } |
| |
| } |