1136 lines
31 KiB
Java
1136 lines
31 KiB
Java
/*
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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.Comparator;
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import java.util.Iterator;
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import java.util.NavigableSet;
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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 ConcurrentSkipListSubSetTest 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(ConcurrentSkipListSubSetTest.class);
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}
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static class MyReverseComparator implements Comparator {
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@SuppressWarnings("unchecked")
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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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* Items 0 ... n - 1.
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*/
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private static NavigableSet<Item> populatedSet(int n) {
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ConcurrentSkipListSet<Item> q = new ConcurrentSkipListSet<>();
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assertTrue(q.isEmpty());
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for (int i = n - 1; i >= 0; i -= 2)
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mustAdd(q, i);
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for (int i = (n & 1); i < n; i += 2)
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mustAdd(q, i);
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mustAdd(q, -n);
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mustAdd(q, n);
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NavigableSet<Item> s = q.subSet(itemFor(0), true, itemFor(n), false);
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assertFalse(s.isEmpty());
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mustEqual(n, s.size());
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return s;
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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 static NavigableSet<Item> set5() {
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ConcurrentSkipListSet<Item> q = new ConcurrentSkipListSet<>();
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assertTrue(q.isEmpty());
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q.add(one);
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q.add(two);
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q.add(three);
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q.add(four);
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q.add(five);
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q.add(zero);
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q.add(seven);
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NavigableSet<Item> s = q.subSet(one, true, seven, false);
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mustEqual(5, s.size());
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return s;
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}
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/**
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* Returns a new set of first 5 negative ints.
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*/
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private static NavigableSet<Item> dset5() {
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ConcurrentSkipListSet<Item> q = new ConcurrentSkipListSet<>();
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assertTrue(q.isEmpty());
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q.add(minusOne);
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q.add(minusTwo);
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q.add(minusThree);
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q.add(minusFour);
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q.add(minusFive);
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NavigableSet<Item> s = q.descendingSet();
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mustEqual(5, s.size());
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return s;
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}
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private static NavigableSet<Item> set0() {
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ConcurrentSkipListSet<Item> set = new ConcurrentSkipListSet<>();
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assertTrue(set.isEmpty());
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return set.tailSet(minusOne, true);
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}
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private static NavigableSet<Item> dset0() {
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ConcurrentSkipListSet<Item> set = new ConcurrentSkipListSet<>();
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assertTrue(set.isEmpty());
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return set;
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}
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/**
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* A new set has unbounded capacity
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*/
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public void testConstructor1() {
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mustEqual(0, set0().size());
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}
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/**
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* isEmpty is true before add, false after
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*/
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public void testEmpty() {
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NavigableSet<Item> q = set0();
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assertTrue(q.isEmpty());
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mustAdd(q, one);
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assertFalse(q.isEmpty());
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mustAdd(q, two);
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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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NavigableSet<Item> q = populatedSet(SIZE);
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for (int i = 0; i < SIZE; ++i) {
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mustEqual(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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mustEqual(i, q.size());
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mustAdd(q, 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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NavigableSet<Item> q = set0();
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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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NavigableSet<Item> q = set0();
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assertTrue(q.add(six));
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}
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/**
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* Add of duplicate element fails
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*/
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public void testAddDup() {
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NavigableSet<Item> q = set0();
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assertTrue(q.add(six));
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assertFalse(q.add(six));
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}
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/**
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* Add of non-Comparable throws CCE
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*/
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public void testAddNonComparable() {
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ConcurrentSkipListSet<Object> src = new ConcurrentSkipListSet<>();
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NavigableSet<Object> q = src.tailSet(minusOne, true);
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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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}
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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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NavigableSet<Item> q = set0();
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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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NavigableSet<Item> q = set0();
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Item[] items = new Item[SIZE];
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try {
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q.addAll(Arrays.asList(items));
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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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NavigableSet<Item> q = set0();
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Item[] items = new Item[2]; items[0] = zero;
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try {
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q.addAll(Arrays.asList(items));
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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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Item[] empty = new Item[0];
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Item[] items = new Item[SIZE];
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for (int i = 0; i < SIZE; ++i)
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items[i] = itemFor(SIZE - 1 - i);
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NavigableSet<Item> q = set0();
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assertFalse(q.addAll(Arrays.asList(empty)));
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assertTrue(q.addAll(Arrays.asList(items)));
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for (int i = 0; i < SIZE; ++i)
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mustEqual(i, q.pollFirst());
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}
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/**
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* poll succeeds unless empty
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*/
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public void testPoll() {
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NavigableSet<Item> q = populatedSet(SIZE);
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for (int i = 0; i < SIZE; ++i) {
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mustEqual(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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* remove(x) removes x and returns true if present
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*/
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public void testRemoveElement() {
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NavigableSet<Item> q = populatedSet(SIZE);
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for (int i = 1; i < SIZE; i += 2) {
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mustContain(q, i);
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mustRemove(q, i);
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mustNotContain(q, i);
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mustContain(q, i - 1);
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}
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for (int i = 0; i < SIZE; i += 2) {
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mustContain(q, i);
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mustRemove(q, i);
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mustNotContain(q, i);
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mustNotRemove(q, i + 1);
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mustNotContain(q, i + 1);
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}
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assertTrue(q.isEmpty());
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}
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/**
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* contains(x) reports true when elements added but not yet removed
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*/
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public void testContains() {
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NavigableSet<Item> q = populatedSet(SIZE);
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for (int i = 0; i < SIZE; ++i) {
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mustContain(q, i);
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q.pollFirst();
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mustNotContain(q, i);
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}
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}
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/**
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* clear removes all elements
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*/
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public void testClear() {
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NavigableSet<Item> q = populatedSet(SIZE);
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q.clear();
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assertTrue(q.isEmpty());
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mustEqual(0, q.size());
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mustAdd(q, one);
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assertFalse(q.isEmpty());
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q.clear();
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assertTrue(q.isEmpty());
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}
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/**
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* containsAll(c) is true when c contains a subset of elements
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*/
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public void testContainsAll() {
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NavigableSet<Item> q = populatedSet(SIZE);
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NavigableSet<Item> p = set0();
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for (int i = 0; i < SIZE; ++i) {
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assertTrue(q.containsAll(p));
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assertFalse(p.containsAll(q));
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mustAdd(p, i);
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}
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assertTrue(p.containsAll(q));
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}
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/**
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* retainAll(c) retains only those elements of c and reports true if changed
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*/
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public void testRetainAll() {
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NavigableSet<Item> q = populatedSet(SIZE);
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NavigableSet<Item> p = populatedSet(SIZE);
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for (int i = 0; i < SIZE; ++i) {
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boolean changed = q.retainAll(p);
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if (i == 0)
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assertFalse(changed);
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else
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assertTrue(changed);
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assertTrue(q.containsAll(p));
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mustEqual(SIZE - i, q.size());
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p.pollFirst();
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}
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}
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/**
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* removeAll(c) removes only those elements of c and reports true if changed
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*/
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public void testRemoveAll() {
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for (int i = 1; i < SIZE; ++i) {
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NavigableSet<Item> q = populatedSet(SIZE);
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NavigableSet<Item> p = populatedSet(i);
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assertTrue(q.removeAll(p));
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mustEqual(SIZE - i, q.size());
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for (int j = 0; j < i; ++j) {
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mustNotContain(q, p.pollFirst());
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}
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}
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}
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/**
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* lower returns preceding element
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*/
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public void testLower() {
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NavigableSet<Item> q = set5();
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Object e1 = q.lower(three);
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mustEqual(two, e1);
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Object e2 = q.lower(six);
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mustEqual(five, e2);
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Object e3 = q.lower(one);
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assertNull(e3);
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Object e4 = q.lower(zero);
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assertNull(e4);
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}
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/**
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* higher returns next element
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*/
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public void testHigher() {
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NavigableSet<Item> q = set5();
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Object e1 = q.higher(three);
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mustEqual(four, e1);
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Object e2 = q.higher(zero);
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mustEqual(one, e2);
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Object e3 = q.higher(five);
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assertNull(e3);
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Object e4 = q.higher(six);
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assertNull(e4);
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}
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/**
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* floor returns preceding element
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*/
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public void testFloor() {
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NavigableSet<Item> q = set5();
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Object e1 = q.floor(three);
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mustEqual(three, e1);
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Object e2 = q.floor(six);
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mustEqual(five, e2);
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Object e3 = q.floor(one);
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mustEqual(one, e3);
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Object e4 = q.floor(zero);
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assertNull(e4);
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}
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/**
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* ceiling returns next element
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*/
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public void testCeiling() {
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NavigableSet<Item> q = set5();
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Object e1 = q.ceiling(three);
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mustEqual(three, e1);
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Object e2 = q.ceiling(zero);
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mustEqual(one, e2);
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Object e3 = q.ceiling(five);
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mustEqual(five, e3);
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Object e4 = q.ceiling(six);
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assertNull(e4);
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}
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/**
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* toArray contains all elements in sorted order
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*/
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public void testToArray() {
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NavigableSet<Item> q = populatedSet(SIZE);
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Object[] a = q.toArray();
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assertSame(Object[].class, a.getClass());
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for (Object o : a)
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assertSame(o, q.pollFirst());
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assertTrue(q.isEmpty());
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}
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/**
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* toArray(a) contains all elements in sorted order
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*/
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public void testToArray2() {
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NavigableSet<Item> q = populatedSet(SIZE);
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Item[] items = new Item[SIZE];
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Item[] array = q.toArray(items);
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assertSame(items, array);
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for (Item o : items)
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assertSame(o, q.pollFirst());
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assertTrue(q.isEmpty());
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}
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/**
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* iterator iterates through all elements
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*/
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public void testIterator() {
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NavigableSet<Item> q = populatedSet(SIZE);
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Iterator<? extends Item> it = q.iterator();
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int i;
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for (i = 0; it.hasNext(); i++)
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assertTrue(q.contains(it.next()));
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mustEqual(i, SIZE);
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assertIteratorExhausted(it);
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}
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/**
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* iterator of empty set has no elements
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*/
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public void testEmptyIterator() {
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assertIteratorExhausted(set0().iterator());
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}
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/**
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* iterator.remove removes current element
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*/
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public void testIteratorRemove() {
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final NavigableSet<Item> q = set0();
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mustAdd(q, two);
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mustAdd(q, one);
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mustAdd(q, three);
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Iterator<? extends Item> it = q.iterator();
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it.next();
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it.remove();
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it = q.iterator();
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mustEqual(it.next(), two);
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mustEqual(it.next(), three);
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assertFalse(it.hasNext());
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}
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/**
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* toString contains toStrings of elements
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*/
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public void testToString() {
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NavigableSet<Item> q = populatedSet(SIZE);
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String s = q.toString();
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for (int i = 0; i < SIZE; ++i) {
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assertTrue(s.contains(String.valueOf(i)));
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}
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}
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/**
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* A deserialized/reserialized set equals original
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*/
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public void testSerialization() throws Exception {
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NavigableSet<Item> x = populatedSet(SIZE);
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NavigableSet<Item> y = serialClone(x);
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assertNotSame(y, x);
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mustEqual(x.size(), y.size());
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mustEqual(x, y);
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mustEqual(y, x);
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while (!x.isEmpty()) {
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assertFalse(y.isEmpty());
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mustEqual(x.pollFirst(), y.pollFirst());
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}
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assertTrue(y.isEmpty());
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}
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|
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/**
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|
* subSet returns set with keys in requested range
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|
*/
|
|
public void testSubSetContents() {
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NavigableSet<Item> set = set5();
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SortedSet<Item> sm = set.subSet(two, four);
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mustEqual(two, sm.first());
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mustEqual(three, sm.last());
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mustEqual(2, sm.size());
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mustNotContain(sm, one);
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mustContain(sm, two);
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mustContain(sm, three);
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mustNotContain(sm, four);
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mustNotContain(sm, five);
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Iterator<? extends Item> i = sm.iterator();
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Item k = i.next();
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mustEqual(two, k);
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k = i.next();
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mustEqual(three, k);
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assertFalse(i.hasNext());
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Iterator<? extends Item> j = sm.iterator();
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|
j.next();
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j.remove();
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mustNotContain(set, two);
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mustEqual(4, set.size());
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mustEqual(1, sm.size());
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mustEqual(three, sm.first());
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mustEqual(three, sm.last());
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mustRemove(sm, three);
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assertTrue(sm.isEmpty());
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mustEqual(3, set.size());
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}
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|
|
public void testSubSetContents2() {
|
|
NavigableSet<Item> set = set5();
|
|
SortedSet<Item> sm = set.subSet(two, three);
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mustEqual(1, sm.size());
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|
mustEqual(two, sm.first());
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mustEqual(two, sm.last());
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mustNotContain(sm, one);
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mustContain(sm, two);
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mustNotContain(sm, three);
|
|
mustNotContain(sm, four);
|
|
mustNotContain(sm, five);
|
|
Iterator<? extends Item> i = sm.iterator();
|
|
Item k = i.next();
|
|
mustEqual(two, k);
|
|
assertFalse(i.hasNext());
|
|
Iterator<? extends Item> j = sm.iterator();
|
|
j.next();
|
|
j.remove();
|
|
mustNotContain(set, two);
|
|
mustEqual(4, set.size());
|
|
mustEqual(0, sm.size());
|
|
assertTrue(sm.isEmpty());
|
|
assertFalse(sm.remove(three));
|
|
mustEqual(4, set.size());
|
|
}
|
|
|
|
/**
|
|
* headSet returns set with keys in requested range
|
|
*/
|
|
public void testHeadSetContents() {
|
|
NavigableSet<Item> set = set5();
|
|
SortedSet<Item> sm = set.headSet(four);
|
|
mustContain(sm, one);
|
|
mustContain(sm, two);
|
|
mustContain(sm, three);
|
|
mustNotContain(sm, four);
|
|
mustNotContain(sm, five);
|
|
Iterator<? extends Item> i = sm.iterator();
|
|
Item k = i.next();
|
|
mustEqual(one, k);
|
|
k = i.next();
|
|
mustEqual(two, k);
|
|
k = i.next();
|
|
mustEqual(three, k);
|
|
assertFalse(i.hasNext());
|
|
sm.clear();
|
|
assertTrue(sm.isEmpty());
|
|
mustEqual(2, set.size());
|
|
mustEqual(four, set.first());
|
|
}
|
|
|
|
/**
|
|
* tailSet returns set with keys in requested range
|
|
*/
|
|
public void testTailSetContents() {
|
|
NavigableSet<Item> set = set5();
|
|
SortedSet<Item> sm = set.tailSet(two);
|
|
mustNotContain(sm, one);
|
|
mustContain(sm, two);
|
|
mustContain(sm, three);
|
|
mustContain(sm, four);
|
|
mustContain(sm, five);
|
|
assertFalse(sm.contains(one));
|
|
assertTrue(sm.contains(two));
|
|
assertTrue(sm.contains(three));
|
|
assertTrue(sm.contains(four));
|
|
assertTrue(sm.contains(five));
|
|
Iterator<? extends Item> i = sm.iterator();
|
|
Item k = i.next();
|
|
mustEqual(two, k);
|
|
k = i.next();
|
|
mustEqual(three, k);
|
|
k = i.next();
|
|
mustEqual(four, k);
|
|
k = i.next();
|
|
mustEqual(five, k);
|
|
assertFalse(i.hasNext());
|
|
|
|
SortedSet<Item> ssm = sm.tailSet(four);
|
|
mustEqual(four, ssm.first());
|
|
mustEqual(five, ssm.last());
|
|
mustRemove(ssm, four);
|
|
mustEqual(1, ssm.size());
|
|
mustEqual(3, sm.size());
|
|
mustEqual(4, set.size());
|
|
}
|
|
|
|
/**
|
|
* size changes when elements added and removed
|
|
*/
|
|
public void testDescendingSize() {
|
|
NavigableSet<Item> q = populatedSet(SIZE);
|
|
for (int i = 0; i < SIZE; ++i) {
|
|
mustEqual(SIZE - i, q.size());
|
|
q.pollFirst();
|
|
}
|
|
for (int i = 0; i < SIZE; ++i) {
|
|
mustEqual(i, q.size());
|
|
mustAdd(q, i);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* add(null) throws NPE
|
|
*/
|
|
public void testDescendingAddNull() {
|
|
NavigableSet<Item> q = dset0();
|
|
try {
|
|
q.add(null);
|
|
shouldThrow();
|
|
} catch (NullPointerException success) {}
|
|
}
|
|
|
|
/**
|
|
* Add of comparable element succeeds
|
|
*/
|
|
public void testDescendingAdd() {
|
|
NavigableSet<Item> q = dset0();
|
|
assertTrue(q.add(minusSix));
|
|
}
|
|
|
|
/**
|
|
* Add of duplicate element fails
|
|
*/
|
|
public void testDescendingAddDup() {
|
|
NavigableSet<Item> q = dset0();
|
|
assertTrue(q.add(minusSix));
|
|
assertFalse(q.add(minusSix));
|
|
}
|
|
|
|
/**
|
|
* Add of non-Comparable throws CCE
|
|
*/
|
|
public void testDescendingAddNonComparable() {
|
|
NavigableSet<Object> q = new ConcurrentSkipListSet<>();
|
|
try {
|
|
q.add(new Object());
|
|
q.add(new Object());
|
|
shouldThrow();
|
|
} catch (ClassCastException success) {}
|
|
}
|
|
|
|
/**
|
|
* addAll(null) throws NPE
|
|
*/
|
|
public void testDescendingAddAll1() {
|
|
NavigableSet<Item> q = dset0();
|
|
try {
|
|
q.addAll(null);
|
|
shouldThrow();
|
|
} catch (NullPointerException success) {}
|
|
}
|
|
|
|
/**
|
|
* addAll of a collection with null elements throws NPE
|
|
*/
|
|
public void testDescendingAddAll2() {
|
|
NavigableSet<Item> q = dset0();
|
|
Item[] items = new Item[1];
|
|
try {
|
|
q.addAll(Arrays.asList(items));
|
|
shouldThrow();
|
|
} catch (NullPointerException success) {}
|
|
}
|
|
|
|
/**
|
|
* addAll of a collection with any null elements throws NPE after
|
|
* possibly adding some elements
|
|
*/
|
|
public void testDescendingAddAll3() {
|
|
NavigableSet<Item> q = dset0();
|
|
Item[] items = new Item[2]; items[0] = zero;
|
|
try {
|
|
q.addAll(Arrays.asList(items));
|
|
shouldThrow();
|
|
} catch (NullPointerException success) {}
|
|
}
|
|
|
|
/**
|
|
* Set contains all elements of successful addAll
|
|
*/
|
|
public void testDescendingAddAll5() {
|
|
Item[] empty = new Item[0];
|
|
Item[] items = new Item[SIZE];
|
|
for (int i = 0; i < SIZE; ++i)
|
|
items[i] = itemFor(SIZE - 1 - i);
|
|
NavigableSet<Item> q = dset0();
|
|
assertFalse(q.addAll(Arrays.asList(empty)));
|
|
assertTrue(q.addAll(Arrays.asList(items)));
|
|
for (int i = 0; i < SIZE; ++i)
|
|
mustEqual(i, q.pollFirst());
|
|
}
|
|
|
|
/**
|
|
* poll succeeds unless empty
|
|
*/
|
|
public void testDescendingPoll() {
|
|
NavigableSet<Item> q = populatedSet(SIZE);
|
|
for (int i = 0; i < SIZE; ++i) {
|
|
mustEqual(i, q.pollFirst());
|
|
}
|
|
assertNull(q.pollFirst());
|
|
}
|
|
|
|
/**
|
|
* remove(x) removes x and returns true if present
|
|
*/
|
|
public void testDescendingRemoveElement() {
|
|
NavigableSet<Item> q = populatedSet(SIZE);
|
|
for (int i = 1; i < SIZE; i += 2) {
|
|
mustRemove(q, i);
|
|
}
|
|
for (int i = 0; i < SIZE; i += 2 ) {
|
|
mustRemove(q, i);
|
|
mustNotRemove(q, i + 1);
|
|
}
|
|
assertTrue(q.isEmpty());
|
|
}
|
|
|
|
/**
|
|
* contains(x) reports true when elements added but not yet removed
|
|
*/
|
|
public void testDescendingContains() {
|
|
NavigableSet<Item> q = populatedSet(SIZE);
|
|
for (int i = 0; i < SIZE; ++i) {
|
|
mustContain(q, i);
|
|
q.pollFirst();
|
|
mustNotContain(q, i);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* clear removes all elements
|
|
*/
|
|
public void testDescendingClear() {
|
|
NavigableSet<Item> q = populatedSet(SIZE);
|
|
q.clear();
|
|
assertTrue(q.isEmpty());
|
|
mustEqual(0, q.size());
|
|
mustAdd(q, one);
|
|
assertFalse(q.isEmpty());
|
|
q.clear();
|
|
assertTrue(q.isEmpty());
|
|
}
|
|
|
|
/**
|
|
* containsAll(c) is true when c contains a subset of elements
|
|
*/
|
|
public void testDescendingContainsAll() {
|
|
NavigableSet<Item> q = populatedSet(SIZE);
|
|
NavigableSet<Item> p = dset0();
|
|
for (int i = 0; i < SIZE; ++i) {
|
|
assertTrue(q.containsAll(p));
|
|
assertFalse(p.containsAll(q));
|
|
mustAdd(p, i);
|
|
}
|
|
assertTrue(p.containsAll(q));
|
|
}
|
|
|
|
/**
|
|
* retainAll(c) retains only those elements of c and reports true if changed
|
|
*/
|
|
public void testDescendingRetainAll() {
|
|
NavigableSet<Item> q = populatedSet(SIZE);
|
|
NavigableSet<Item> 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));
|
|
mustEqual(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<Item> q = populatedSet(SIZE);
|
|
NavigableSet<Item> p = populatedSet(i);
|
|
assertTrue(q.removeAll(p));
|
|
mustEqual(SIZE - i, q.size());
|
|
for (int j = 0; j < i; ++j) {
|
|
mustNotContain(q, p.pollFirst());
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* lower returns preceding element
|
|
*/
|
|
public void testDescendingLower() {
|
|
NavigableSet<Item> q = dset5();
|
|
Object e1 = q.lower(minusThree);
|
|
mustEqual(minusTwo, e1);
|
|
|
|
Object e2 = q.lower(minusSix);
|
|
mustEqual(minusFive, e2);
|
|
|
|
Object e3 = q.lower(minusOne);
|
|
assertNull(e3);
|
|
|
|
Object e4 = q.lower(zero);
|
|
assertNull(e4);
|
|
}
|
|
|
|
/**
|
|
* higher returns next element
|
|
*/
|
|
public void testDescendingHigher() {
|
|
NavigableSet<Item> q = dset5();
|
|
Object e1 = q.higher(minusThree);
|
|
mustEqual(minusFour, e1);
|
|
|
|
Object e2 = q.higher(zero);
|
|
mustEqual(minusOne, e2);
|
|
|
|
Object e3 = q.higher(minusFive);
|
|
assertNull(e3);
|
|
|
|
Object e4 = q.higher(minusSix);
|
|
assertNull(e4);
|
|
}
|
|
|
|
/**
|
|
* floor returns preceding element
|
|
*/
|
|
public void testDescendingFloor() {
|
|
NavigableSet<Item> q = dset5();
|
|
Object e1 = q.floor(minusThree);
|
|
mustEqual(minusThree, e1);
|
|
|
|
Object e2 = q.floor(minusSix);
|
|
mustEqual(minusFive, e2);
|
|
|
|
Object e3 = q.floor(minusOne);
|
|
mustEqual(minusOne, e3);
|
|
|
|
Object e4 = q.floor(zero);
|
|
assertNull(e4);
|
|
}
|
|
|
|
/**
|
|
* ceiling returns next element
|
|
*/
|
|
public void testDescendingCeiling() {
|
|
NavigableSet<Item> q = dset5();
|
|
Object e1 = q.ceiling(minusThree);
|
|
mustEqual(minusThree, e1);
|
|
|
|
Object e2 = q.ceiling(zero);
|
|
mustEqual(minusOne, e2);
|
|
|
|
Object e3 = q.ceiling(minusFive);
|
|
mustEqual(minusFive, e3);
|
|
|
|
Object e4 = q.ceiling(minusSix);
|
|
assertNull(e4);
|
|
}
|
|
|
|
/**
|
|
* toArray contains all elements
|
|
*/
|
|
public void testDescendingToArray() {
|
|
NavigableSet<Item> q = populatedSet(SIZE);
|
|
Object[] o = q.toArray();
|
|
Arrays.sort(o);
|
|
for (int i = 0; i < o.length; i++)
|
|
mustEqual(o[i], q.pollFirst());
|
|
}
|
|
|
|
/**
|
|
* toArray(a) contains all elements
|
|
*/
|
|
public void testDescendingToArray2() {
|
|
NavigableSet<Item> q = populatedSet(SIZE);
|
|
Item[] items = new Item[SIZE];
|
|
assertSame(items, q.toArray(items));
|
|
Arrays.sort(items);
|
|
for (int i = 0; i < items.length; i++)
|
|
mustEqual(items[i], q.pollFirst());
|
|
}
|
|
|
|
/**
|
|
* iterator iterates through all elements
|
|
*/
|
|
public void testDescendingIterator() {
|
|
NavigableSet<Item> q = populatedSet(SIZE);
|
|
int i = 0;
|
|
Iterator<? extends Item> it = q.iterator();
|
|
while (it.hasNext()) {
|
|
mustContain(q, it.next());
|
|
++i;
|
|
}
|
|
mustEqual(i, SIZE);
|
|
}
|
|
|
|
/**
|
|
* iterator of empty set has no elements
|
|
*/
|
|
public void testDescendingEmptyIterator() {
|
|
NavigableSet<Item> q = dset0();
|
|
int i = 0;
|
|
Iterator<? extends Item> it = q.iterator();
|
|
while (it.hasNext()) {
|
|
mustContain(q, it.next());
|
|
++i;
|
|
}
|
|
mustEqual(0, i);
|
|
}
|
|
|
|
/**
|
|
* iterator.remove removes current element
|
|
*/
|
|
public void testDescendingIteratorRemove() {
|
|
final NavigableSet<Item> q = dset0();
|
|
q.add(two);
|
|
q.add(one);
|
|
q.add(three);
|
|
|
|
Iterator<? extends Item> it = q.iterator();
|
|
it.next();
|
|
it.remove();
|
|
|
|
it = q.iterator();
|
|
mustEqual(it.next(), two);
|
|
mustEqual(it.next(), three);
|
|
assertFalse(it.hasNext());
|
|
}
|
|
|
|
/**
|
|
* toString contains toStrings of elements
|
|
*/
|
|
public void testDescendingToString() {
|
|
NavigableSet<Item> 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<Item> x = dset5();
|
|
NavigableSet<Item> y = serialClone(x);
|
|
|
|
assertNotSame(y, x);
|
|
mustEqual(x.size(), y.size());
|
|
mustEqual(x, y);
|
|
mustEqual(y, x);
|
|
while (!x.isEmpty()) {
|
|
assertFalse(y.isEmpty());
|
|
mustEqual(x.pollFirst(), y.pollFirst());
|
|
}
|
|
assertTrue(y.isEmpty());
|
|
}
|
|
|
|
/**
|
|
* subSet returns set with keys in requested range
|
|
*/
|
|
public void testDescendingSubSetContents() {
|
|
NavigableSet<Item> set = dset5();
|
|
SortedSet<Item> sm = set.subSet(minusTwo, minusFour);
|
|
mustEqual(minusTwo, sm.first());
|
|
mustEqual(minusThree, sm.last());
|
|
mustEqual(2, sm.size());
|
|
mustNotContain(sm, minusOne);
|
|
mustContain(sm, minusTwo);
|
|
mustContain(sm, minusThree);
|
|
mustNotContain(sm, minusFour);
|
|
mustNotContain(sm, minusFive);
|
|
Iterator<? extends Item> i = sm.iterator();
|
|
Item k = i.next();
|
|
mustEqual(minusTwo, k);
|
|
k = i.next();
|
|
mustEqual(minusThree, k);
|
|
assertFalse(i.hasNext());
|
|
Iterator<? extends Item> j = sm.iterator();
|
|
j.next();
|
|
j.remove();
|
|
mustNotContain(set, minusTwo);
|
|
mustEqual(4, set.size());
|
|
mustEqual(1, sm.size());
|
|
mustEqual(minusThree, sm.first());
|
|
mustEqual(minusThree, sm.last());
|
|
mustRemove(sm, minusThree);
|
|
assertTrue(sm.isEmpty());
|
|
mustEqual(3, set.size());
|
|
}
|
|
|
|
public void testDescendingSubSetContents2() {
|
|
NavigableSet<Item> set = dset5();
|
|
SortedSet<Item> sm = set.subSet(minusTwo, minusThree);
|
|
mustEqual(1, sm.size());
|
|
mustEqual(minusTwo, sm.first());
|
|
mustEqual(minusTwo, sm.last());
|
|
mustNotContain(sm, minusOne);
|
|
mustContain(sm, minusTwo);
|
|
mustNotContain(sm, minusThree);
|
|
mustNotContain(sm, minusFour);
|
|
mustNotContain(sm, minusFive);
|
|
Iterator<? extends Item> i = sm.iterator();
|
|
Item k = i.next();
|
|
mustEqual(minusTwo, k);
|
|
assertFalse(i.hasNext());
|
|
Iterator<? extends Item> j = sm.iterator();
|
|
j.next();
|
|
j.remove();
|
|
mustNotContain(set, minusTwo);
|
|
mustEqual(4, set.size());
|
|
mustEqual(0, sm.size());
|
|
assertTrue(sm.isEmpty());
|
|
mustNotRemove(sm, minusThree);
|
|
mustEqual(4, set.size());
|
|
}
|
|
|
|
/**
|
|
* headSet returns set with keys in requested range
|
|
*/
|
|
public void testDescendingHeadSetContents() {
|
|
NavigableSet<Item> set = dset5();
|
|
SortedSet<Item> sm = set.headSet(minusFour);
|
|
mustContain(sm, minusOne);
|
|
mustContain(sm, minusTwo);
|
|
mustContain(sm, minusThree);
|
|
mustNotContain(sm, minusFour);
|
|
mustNotContain(sm, minusFive);
|
|
Iterator<? extends Item> i = sm.iterator();
|
|
Item k = i.next();
|
|
mustEqual(minusOne, k);
|
|
k = i.next();
|
|
mustEqual(minusTwo, k);
|
|
k = i.next();
|
|
mustEqual(minusThree, k);
|
|
assertFalse(i.hasNext());
|
|
sm.clear();
|
|
assertTrue(sm.isEmpty());
|
|
mustEqual(2, set.size());
|
|
mustEqual(minusFour, set.first());
|
|
}
|
|
|
|
/**
|
|
* tailSet returns set with keys in requested range
|
|
*/
|
|
public void testDescendingTailSetContents() {
|
|
NavigableSet<Item> set = dset5();
|
|
SortedSet<Item> sm = set.tailSet(minusTwo);
|
|
mustNotContain(sm, minusOne);
|
|
mustContain(sm, minusTwo);
|
|
mustContain(sm, minusThree);
|
|
mustContain(sm, minusFour);
|
|
mustContain(sm, minusFive);
|
|
Iterator<? extends Item> i = sm.iterator();
|
|
Item k = i.next();
|
|
mustEqual(minusTwo, k);
|
|
k = i.next();
|
|
mustEqual(minusThree, k);
|
|
k = i.next();
|
|
mustEqual(minusFour, k);
|
|
k = i.next();
|
|
mustEqual(minusFive, k);
|
|
assertFalse(i.hasNext());
|
|
|
|
SortedSet<Item> ssm = sm.tailSet(minusFour);
|
|
mustEqual(minusFour, ssm.first());
|
|
mustEqual(minusFive, ssm.last());
|
|
mustRemove(ssm, minusFour);
|
|
mustEqual(1, ssm.size());
|
|
mustEqual(3, sm.size());
|
|
mustEqual(4, set.size());
|
|
}
|
|
|
|
}
|