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/* |
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* Copyright (c) 2006, 2014, Oracle and/or its affiliates. All rights reserved. |
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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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/* |
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* @test |
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* @bug 6420753 6242436 6691185 |
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* @summary Compare NavigableMap implementations for identical behavior |
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* @run main LockStep |
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* @run main/othervm -XX:+AggressiveOpts LockStep |
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* @run main/othervm -XX:+AggressiveOpts -Dthorough=true LockStep |
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* @author Martin Buchholz |
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* @key randomness |
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*/ |
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|
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import java.io.*; |
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import java.util.*; |
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import java.util.concurrent.*; |
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import static java.util.Collections.*; |
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|
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@SuppressWarnings("unchecked") |
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public class LockStep { |
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static final int DEFAULT_SIZE = 5; |
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static int size; // Running time is O(size**2) |
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|
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static int intArg(String[] args, int i, int defaultValue) { |
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return args.length > i ? Integer.parseInt(args[i]) : defaultValue; |
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} |
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|
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// Pass -Dthorough=true for more exhaustive testing |
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static final boolean thorough = Boolean.getBoolean("thorough"); |
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|
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static boolean maybe(int n) { return rnd.nextInt(n) == 0; } |
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|
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static void realMain(String[] args) { |
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size = intArg(args, 0, DEFAULT_SIZE); |
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|
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lockSteps(new TreeMap(), |
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new ConcurrentSkipListMap()); |
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lockSteps(new TreeMap(), |
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Collections.checkedNavigableMap(new TreeMap(), Integer.class, Integer.class)); |
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lockSteps(new TreeMap(), |
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Collections.synchronizedNavigableMap(new TreeMap())); |
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lockSteps(new TreeMap(reverseOrder()), |
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new ConcurrentSkipListMap(reverseOrder())); |
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|
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lockSteps(new TreeSet(), |
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new ConcurrentSkipListSet()); |
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lockSteps(new TreeSet(), |
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Collections.checkedNavigableSet(new TreeSet(), Integer.class)); |
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lockSteps(new TreeSet(), |
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Collections.synchronizedNavigableSet(new TreeSet())); |
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lockSteps(new TreeSet(reverseOrder()), |
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new ConcurrentSkipListSet(reverseOrder())); |
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} |
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|
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static void lockSteps(NavigableMap m1, NavigableMap m2) { |
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if (maybe(4)) m1 = serialClone(m1); |
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if (maybe(4)) m2 = serialClone(m2); |
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lockStep(m1, |
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m2); |
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lockStep(m1.descendingMap(), |
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m2.descendingMap()); |
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lockStep(fullSubMap(m1), |
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fullSubMap(m2)); |
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lockStep(fullSubMap(m1.descendingMap()), |
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fullSubMap(m2.descendingMap())); |
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lockStep(fullHeadMap(m1), |
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fullHeadMap(m2)); |
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lockStep(fullHeadMap(m1.descendingMap()), |
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fullHeadMap(m2.descendingMap())); |
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lockStep(fullTailMap(m1), |
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fullTailMap(m2)); |
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lockStep(fullTailMap(m1.descendingMap()), |
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fullTailMap(m2.descendingMap())); |
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} |
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|
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static void lockSteps(NavigableSet s1, NavigableSet s2) { |
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if (maybe(4)) s1 = serialClone(s1); |
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if (maybe(4)) s2 = serialClone(s2); |
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lockStep(s1, |
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s2); |
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lockStep(s1.descendingSet(), |
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s2.descendingSet()); |
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lockStep(fullSubSet(s1), |
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fullSubSet(s2)); |
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lockStep(fullSubSet(s1.descendingSet()), |
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fullSubSet(s2.descendingSet())); |
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lockStep(fullHeadSet(s1), |
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fullHeadSet(s2)); |
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lockStep(fullHeadSet(s1.descendingSet()), |
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fullHeadSet(s2.descendingSet())); |
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lockStep(fullTailSet(s1), |
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fullTailSet(s2)); |
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lockStep(fullTailSet(s1.descendingSet()), |
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fullTailSet(s2.descendingSet())); |
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} |
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|
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static boolean isAscending(NavigableMap m) { |
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Comparator cmp = m.comparator(); |
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return (cmp == null || cmp.compare(1, 2) < 0); |
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} |
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|
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static NavigableMap fullSubMap(NavigableMap m) { |
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return isAscending(m) |
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? m.subMap(Integer.MIN_VALUE, true, Integer.MAX_VALUE, true) |
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: m.subMap(Integer.MAX_VALUE, true, Integer.MIN_VALUE, true); |
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} |
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|
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static NavigableMap fullHeadMap(NavigableMap m) { |
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return isAscending(m) |
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? m.headMap(Integer.MAX_VALUE, true) |
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: m.headMap(Integer.MIN_VALUE, true); |
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} |
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|
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static NavigableMap fullTailMap(NavigableMap m) { |
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return isAscending(m) |
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? m.tailMap(Integer.MIN_VALUE, true) |
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: m.tailMap(Integer.MAX_VALUE, true); |
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} |
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|
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static boolean isAscending(NavigableSet s) { |
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Comparator cmp = s.comparator(); |
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return (cmp == null || cmp.compare(1, 2) < 0); |
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} |
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|
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static NavigableSet fullSubSet(NavigableSet s) { |
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return isAscending(s) |
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? s.subSet(Integer.MIN_VALUE, true, Integer.MAX_VALUE, true) |
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: s.subSet(Integer.MAX_VALUE, true, Integer.MIN_VALUE, true); |
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} |
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|
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static NavigableSet fullHeadSet(NavigableSet s) { |
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return isAscending(s) |
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? s.headSet(Integer.MAX_VALUE, true) |
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: s.headSet(Integer.MIN_VALUE, true); |
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} |
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|
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static NavigableSet fullTailSet(NavigableSet s) { |
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return isAscending(s) |
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? s.tailSet(Integer.MIN_VALUE, true) |
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: s.tailSet(Integer.MAX_VALUE, true); |
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} |
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|
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static void testEmptyCollection(Collection<?> c) { |
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check(c.isEmpty()); |
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equal(c.size(), 0); |
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equal(c.toString(),"[]"); |
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equal(c.toArray().length, 0); |
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equal(c.toArray(new Object[0]).length, 0); |
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|
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Object[] a = new Object[1]; a[0] = Boolean.TRUE; |
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equal(c.toArray(a), a); |
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equal(a[0], null); |
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check(! c.iterator().hasNext()); |
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} |
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|
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static void testEmptySet(Set<?> c) { |
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testEmptyCollection(c); |
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equal(c.hashCode(), 0); |
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equal2(c, Collections.<Integer>emptySet()); |
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} |
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|
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static void testEmptyMap(final Map<?,?> m) { |
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check(m.isEmpty()); |
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equal(m.size(), 0); |
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equal(m.toString(),"{}"); |
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equal(m.hashCode(), 0); |
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testEmptySet(m.keySet()); |
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testEmptySet(m.entrySet()); |
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testEmptyCollection(m.values()); |
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} |
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|
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static final Random rnd; |
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|
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static { |
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// sufficiently random for this test |
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long seed = System.nanoTime(); |
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System.out.println(LockStep.class.getCanonicalName() + ": Trial random seed: " + seed ); |
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|
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rnd = new Random(seed); |
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} |
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|
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static void equalNext(final Iterator<?> it, Object expected) { |
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if (maybe(2)) |
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check(it.hasNext()); |
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equal(it.next(), expected); |
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} |
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|
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static Comparator comparator(NavigableSet s) { |
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Comparator cmp = s.comparator(); |
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return cmp != null ? cmp : new Comparator() { |
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public int compare(Object o1, Object o2) { |
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return ((Comparable) o1).compareTo(o2); }}; |
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} |
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|
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static Comparator comparator(NavigableMap m) { |
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Comparator cmp = m.comparator(); |
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return cmp != null ? cmp : new Comparator() { |
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public int compare(Object o1, Object o2) { |
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return ((Comparable) o1).compareTo(o2); }}; |
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} |
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|
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static void checkNavigableSet(final NavigableSet s) { |
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if (s.comparator() == null) |
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check(s.descendingSet().descendingSet().comparator() == null); |
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equal(s.isEmpty(), s.size() == 0); |
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equal2(s, s.descendingSet()); |
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if (maybe(4) && s instanceof Serializable) { |
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try { |
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equal2(s, serialClone(s)); |
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} catch (RuntimeException uhoh) { |
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if (!(uhoh.getCause() instanceof NotSerializableException)) { |
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throw uhoh; |
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} |
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} |
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} |
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Comparator cmp = comparator(s); |
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if (s.isEmpty()) { |
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THROWS(NoSuchElementException.class, |
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() -> s.first(), |
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() -> s.last()); |
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equal(null, s.lower(1)); |
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equal(null, s.floor(1)); |
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equal(null, s.ceiling(1)); |
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equal(null, s.higher(1)); |
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} else { |
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Object a = s.first(); |
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Object z = s.last(); |
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equal(s.lower(a), null); |
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equal(s.higher(z), null); |
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equal2(s, s.tailSet(a)); |
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equal2(s, s.headSet(z, true)); |
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equal2(s, s.subSet(a, true, z, true)); |
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|
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testEmptySet(s.subSet(a, true, a, false)); |
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testEmptySet(s.subSet(z, true, z, false)); |
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testEmptySet(s.headSet(a, false)); |
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testEmptySet(s.tailSet(z, false)); |
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|
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equal2(s.headSet(a, true), singleton(a)); |
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equal2(s.tailSet(z, true), singleton(z)); |
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} |
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Iterator[] its = new Iterator[] { |
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s.iterator(), |
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s.descendingSet().descendingSet().iterator(), |
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}; |
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for (final Iterator it : its) |
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if (maybe(4)) |
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THROWS(IllegalStateException.class, () -> it.remove()); |
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Object prev = null; |
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for (Object e : s) { |
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check(s.contains(e)); |
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for (Iterator it : its) equalNext(it, e); |
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equal(e, s.ceiling(e)); |
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equal(e, s.floor(e)); |
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check(s.higher(e) == null || cmp.compare(e, s.higher(e)) < 0); |
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equal(s.lower(e), prev); |
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if (prev == null) { |
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} else { |
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check(cmp.compare(prev, e) < 0); |
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} |
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prev = e; |
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} |
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for (final Iterator it : its) { |
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if (maybe(2)) |
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check(! it.hasNext()); |
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Fun fun = () -> it.next(); |
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THROWS(NoSuchElementException.class, fun, fun, fun); |
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} |
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} |
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|
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static void equalIterators(final Iterator<?> it1, |
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final Iterator<?> it2) { |
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while (it1.hasNext()) { |
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if (maybe(2)) |
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check(it2.hasNext()); |
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equal(it1.next(), it2.next()); |
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} |
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check(! it2.hasNext()); |
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} |
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|
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static void equalSetsLeaf(final Set s1, final Set s2) { |
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equal2(s1, s2); |
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equal( s1.size(), s2.size()); |
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equal( s1.isEmpty(), s2.isEmpty()); |
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equal( s1.hashCode(), s2.hashCode()); |
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equal( s1.toString(), s2.toString()); |
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equal( s1.containsAll(s2), s2.containsAll(s1)); |
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} |
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|
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static void equalNavigableSetsLeaf(final NavigableSet s1, |
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final NavigableSet s2) { |
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equal2(s1, s2); |
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equal( s1.size(), s2.size()); |
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equal( s1.isEmpty(), s2.isEmpty()); |
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equal( s1.hashCode(), s2.hashCode()); |
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equal( s1.toString(), s2.toString()); |
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if (! s1.isEmpty()) { |
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equal(s1.first(), s2.first()); |
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equal(s1.last(), s2.last()); |
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} |
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equalIterators(s1.iterator(), s2.iterator()); |
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equalIterators(s1.descendingIterator(), s2.descendingIterator()); |
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checkNavigableSet(s1); |
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checkNavigableSet(s2); |
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} |
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|
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static void equalNavigableSets(final NavigableSet s1, |
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final NavigableSet s2) { |
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equalNavigableSetsLeaf(s1, s2); |
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equalNavigableSetsLeaf(s1.descendingSet(), s2.descendingSet()); |
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equalNavigableSetsLeaf(s1.descendingSet().descendingSet(), s2); |
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Object min = s1.isEmpty() ? Integer.MIN_VALUE : s1.first(); |
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Object max = s2.isEmpty() ? Integer.MAX_VALUE : s2.last(); |
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if (s1.comparator() != null && |
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s1.comparator().compare(min, max) > 0) { |
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Object tmp = min; min = max; max = tmp; |
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} |
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|
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equalNavigableSetsLeaf(s1.subSet(min, true, max, true), |
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s2.subSet(min, true, max, true)); |
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equalNavigableSetsLeaf(s1.tailSet(min, true), |
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s2.tailSet(min, true)); |
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equalNavigableSetsLeaf(s1.headSet(max, true), |
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s2.headSet(max, true)); |
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equalNavigableSetsLeaf((NavigableSet) s1.subSet(min, max), |
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(NavigableSet) s2.subSet(min, max)); |
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equalNavigableSetsLeaf((NavigableSet) s1.tailSet(min), |
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(NavigableSet) s2.tailSet(min)); |
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equalNavigableSetsLeaf((NavigableSet) s1.headSet(max), |
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(NavigableSet) s2.headSet(max)); |
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} |
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|
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// Destined for a Collections.java near you? |
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static <T> T[] concat(T[]... arrays) { |
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int len = 0; |
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for (int i = 0; i < arrays.length; i++) |
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len += arrays[i].length; |
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T[] a = (T[])java.lang.reflect.Array |
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.newInstance(arrays[0].getClass().getComponentType(), len); |
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int k = 0; |
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for (int i = 0; i < arrays.length; i++) { |
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T[] array = arrays[i]; |
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System.arraycopy(array, 0, a, k, array.length); |
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k += array.length; |
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} |
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return a; |
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} |
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|
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static void checkNavigableMap(final NavigableMap m) { |
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if (m.comparator() == null) { |
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check(m.descendingMap().descendingMap().comparator() == null); |
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check(m.descendingKeySet().descendingSet().comparator() == null); |
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} |
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equal(m.isEmpty(), m.size() == 0); |
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equal2(m, m.descendingMap()); |
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if (maybe(4)) |
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equal2(m, serialClone(m)); |
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equal2(m.keySet(), m.descendingKeySet()); |
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Comparator cmp = comparator(m); |
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if (m.isEmpty()) { |
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THROWS(NoSuchElementException.class, |
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() -> m.firstKey(), |
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() -> m.lastKey()); |
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equal(null, m.firstEntry()); |
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equal(null, m.lastEntry()); |
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equal(null, m.pollFirstEntry()); |
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equal(null, m.pollLastEntry()); |
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equal(null, m.lowerKey(1)); |
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equal(null, m.floorKey(1)); |
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equal(null, m.ceilingKey(1)); |
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equal(null, m.higherKey(1)); |
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equal(null, m.lowerEntry(1)); |
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equal(null, m.floorEntry(1)); |
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equal(null, m.ceilingEntry(1)); |
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equal(null, m.higherEntry(1)); |
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} else { |
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Object a = m.firstKey(); |
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Object z = m.lastKey(); |
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equal(m.lowerKey(a), null); |
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equal(m.higherKey(z), null); |
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equal(a, m.firstEntry().getKey()); |
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equal(z, m.lastEntry().getKey()); |
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equal2(m, m.tailMap(a)); |
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equal2(m, m.headMap(z, true)); |
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equal2(m, m.subMap(a, true, z, true)); |
407 |
|
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testEmptyMap(m.subMap(a, true, a, false)); |
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testEmptyMap(m.subMap(z, true, z, false)); |
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testEmptyMap(m.headMap(a, false)); |
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testEmptyMap(m.tailMap(z, false)); |
412 |
|
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equal2(m.headMap(a, true), singletonMap(a, m.get(a))); |
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equal2(m.tailMap(z, true), singletonMap(z, m.get(z))); |
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} |
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|
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Iterator[] kits = new Iterator[] { |
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m.keySet().iterator(), |
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m.descendingMap().descendingKeySet().iterator(), |
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m.descendingKeySet().descendingSet().iterator(), |
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}; |
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Iterator[] vits = new Iterator[] { |
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m.values().iterator(), |
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m.descendingMap().descendingMap().values().iterator(), |
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}; |
426 |
Iterator[] eits = new Iterator[] { |
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m.entrySet().iterator(), |
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m.descendingMap().descendingMap().entrySet().iterator(), |
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}; |
430 |
Iterator[] its = concat(kits, vits, eits); |
431 |
for (final Iterator it : its) |
432 |
if (maybe(4)) |
433 |
THROWS(IllegalStateException.class, () -> it.remove()); |
434 |
Map.Entry prev = null; |
435 |
for (Map.Entry e : (Set<Map.Entry>) m.entrySet()) { |
436 |
Object k = e.getKey(); |
437 |
Object v = e.getValue(); |
438 |
check(m.containsKey(k)); |
439 |
check(m.containsValue(v)); |
440 |
for (Iterator kit : kits) equalNext(kit, k); |
441 |
for (Iterator vit : vits) equalNext(vit, v); |
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for (Iterator eit : eits) equalNext(eit, e); |
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equal(k, m.ceilingKey(k)); |
444 |
equal(k, m.ceilingEntry(k).getKey()); |
445 |
equal(k, m.floorKey(k)); |
446 |
equal(k, m.floorEntry(k).getKey()); |
447 |
check(m.higherKey(k) == null || cmp.compare(k, m.higherKey(k)) < 0); |
448 |
check(m.lowerKey(k) == null || cmp.compare(k, m.lowerKey(k)) > 0); |
449 |
equal(m.lowerEntry(k), prev); |
450 |
if (prev == null) { |
451 |
equal(m.lowerKey(k), null); |
452 |
} else { |
453 |
equal(m.lowerKey(k), prev.getKey()); |
454 |
check(cmp.compare(prev.getKey(), e.getKey()) < 0); |
455 |
} |
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prev = e; |
457 |
} |
458 |
for (final Iterator it : its) { |
459 |
if (maybe(2)) |
460 |
check(! it.hasNext()); |
461 |
Fun fun = () -> it.next(); |
462 |
THROWS(NoSuchElementException.class, fun, fun, fun); |
463 |
} |
464 |
} |
465 |
|
466 |
static void equalNavigableMapsLeaf(final NavigableMap m1, |
467 |
final NavigableMap m2) { |
468 |
equal2(m1, m2); |
469 |
equal( m1.size(), m2.size()); |
470 |
equal( m1.isEmpty(), m2.isEmpty()); |
471 |
equal( m1.hashCode(), m2.hashCode()); |
472 |
equal( m1.toString(), m2.toString()); |
473 |
equal2(m1.firstEntry(), m2.firstEntry()); |
474 |
equal2(m1.lastEntry(), m2.lastEntry()); |
475 |
checkNavigableMap(m1); |
476 |
checkNavigableMap(m2); |
477 |
} |
478 |
|
479 |
static void equalNavigableMaps(NavigableMap m1, |
480 |
NavigableMap m2) { |
481 |
equalNavigableMapsLeaf(m1, m2); |
482 |
equalSetsLeaf(m1.keySet(), m2.keySet()); |
483 |
equalNavigableSets(m1.navigableKeySet(), |
484 |
m2.navigableKeySet()); |
485 |
equalNavigableSets(m1.descendingKeySet(), |
486 |
m2.descendingKeySet()); |
487 |
equal2(m1.entrySet(), |
488 |
m2.entrySet()); |
489 |
equalNavigableMapsLeaf(m1.descendingMap(), |
490 |
m2.descendingMap()); |
491 |
equalNavigableMapsLeaf(m1.descendingMap().descendingMap(), |
492 |
m2); |
493 |
equalNavigableSetsLeaf((NavigableSet) m1.descendingMap().keySet(), |
494 |
(NavigableSet) m2.descendingMap().keySet()); |
495 |
equalNavigableSetsLeaf(m1.descendingMap().descendingKeySet(), |
496 |
m2.descendingMap().descendingKeySet()); |
497 |
equal2(m1.descendingMap().entrySet(), |
498 |
m2.descendingMap().entrySet()); |
499 |
|
500 |
//---------------------------------------------------------------- |
501 |
// submaps |
502 |
//---------------------------------------------------------------- |
503 |
Object min = Integer.MIN_VALUE; |
504 |
Object max = Integer.MAX_VALUE; |
505 |
if (m1.comparator() != null |
506 |
&& m1.comparator().compare(min, max) > 0) { |
507 |
Object tmp = min; min = max; max = tmp; |
508 |
} |
509 |
switch (rnd.nextInt(6)) { |
510 |
case 0: |
511 |
equalNavigableMapsLeaf(m1.subMap(min, true, max, true), |
512 |
m2.subMap(min, true, max, true)); |
513 |
break; |
514 |
case 1: |
515 |
equalNavigableMapsLeaf(m1.tailMap(min, true), |
516 |
m2.tailMap(min, true)); |
517 |
break; |
518 |
case 2: |
519 |
equalNavigableMapsLeaf(m1.headMap(max, true), |
520 |
m2.headMap(max, true)); |
521 |
break; |
522 |
case 3: |
523 |
equalNavigableMapsLeaf((NavigableMap) m1.subMap(min, max), |
524 |
(NavigableMap) m2.subMap(min, max)); |
525 |
break; |
526 |
case 4: |
527 |
equalNavigableMapsLeaf((NavigableMap) m1.tailMap(min), |
528 |
(NavigableMap) m2.tailMap(min)); |
529 |
break; |
530 |
case 5: |
531 |
equalNavigableMapsLeaf((NavigableMap) m1.headMap(max), |
532 |
(NavigableMap) m2.headMap(max)); |
533 |
break; |
534 |
} |
535 |
} |
536 |
|
537 |
abstract static class MapFrobber { abstract void frob(NavigableMap m); } |
538 |
abstract static class SetFrobber { abstract void frob(NavigableSet m); } |
539 |
|
540 |
static MapFrobber randomAdder(NavigableMap m) { |
541 |
final Integer k = unusedKey(m); |
542 |
final MapFrobber[] randomAdders = { |
543 |
new MapFrobber() {void frob(NavigableMap m) { |
544 |
equal(m.put(k, k+1), null); |
545 |
equal(m.get(k), k+1); |
546 |
if (maybe(4)) { |
547 |
equal(m.put(k, k+1), k+1); |
548 |
equal(m.get(k), k+1);}}}, |
549 |
new MapFrobber() {void frob(NavigableMap m) { |
550 |
m.descendingMap().put(k, k+1); |
551 |
equal(m.get(k), k+1);}}, |
552 |
new MapFrobber() {void frob(NavigableMap m) { |
553 |
m.tailMap(k,true).headMap(k,true).put(k,k+1);}}, |
554 |
new MapFrobber() {void frob(NavigableMap m) { |
555 |
m.tailMap(k,true).headMap(k,true).descendingMap().put(k,k+1);}} |
556 |
}; |
557 |
return new MapFrobber() {void frob(NavigableMap m) { |
558 |
randomAdders[rnd.nextInt(randomAdders.length)].frob(m); |
559 |
if (maybe(2)) equal(m.get(k), k+1); |
560 |
if (maybe(4)) { |
561 |
equal(m.put(k, k+1), k+1); |
562 |
equal(m.get(k), k+1);}}}; |
563 |
} |
564 |
|
565 |
static SetFrobber randomAdder(NavigableSet s) { |
566 |
final Integer e = unusedElt(s); |
567 |
final SetFrobber[] randomAdders = { |
568 |
new SetFrobber() {void frob(NavigableSet s) { |
569 |
check(s.add(e));}}, |
570 |
new SetFrobber() {void frob(NavigableSet s) { |
571 |
s.descendingSet().add(e);}}, |
572 |
new SetFrobber() {void frob(NavigableSet s) { |
573 |
s.tailSet(e,true).headSet(e,true).add(e);}}, |
574 |
new SetFrobber() {void frob(NavigableSet s) { |
575 |
s.descendingSet().tailSet(e,true).headSet(e,true).add(e);}} |
576 |
}; |
577 |
return new SetFrobber() {void frob(NavigableSet s) { |
578 |
if (maybe(2)) check(! s.contains(e)); |
579 |
randomAdders[rnd.nextInt(randomAdders.length)].frob(s); |
580 |
if (maybe(2)) check(! s.add(e)); |
581 |
if (maybe(2)) check(s.contains(e));}}; |
582 |
} |
583 |
|
584 |
static Integer unusedElt(NavigableSet s) { |
585 |
Integer e; |
586 |
do { e = rnd.nextInt(1024); } |
587 |
while (s.contains(e)); |
588 |
return e; |
589 |
} |
590 |
|
591 |
static Integer unusedKey(NavigableMap m) { |
592 |
Integer k; |
593 |
do { k = rnd.nextInt(1024); } |
594 |
while (m.containsKey(k)); |
595 |
return k; |
596 |
} |
597 |
|
598 |
static Integer usedKey(NavigableMap m) { |
599 |
Integer x = rnd.nextInt(1024); |
600 |
Integer floor = (Integer) m.floorKey(x); |
601 |
Integer ceiling = (Integer) m.ceilingKey(x); |
602 |
if (floor != null) return floor; |
603 |
check(ceiling != null); |
604 |
return ceiling; |
605 |
} |
606 |
|
607 |
static Integer usedElt(NavigableSet s) { |
608 |
Integer x = rnd.nextInt(1024); |
609 |
Integer floor = (Integer) s.floor(x); |
610 |
Integer ceiling = (Integer) s.ceiling(x); |
611 |
if (floor != null) return floor; |
612 |
check(ceiling != null); |
613 |
return ceiling; |
614 |
} |
615 |
|
616 |
static void checkUnusedKey(NavigableMap m, Object k) { |
617 |
check(! m.containsKey(k)); |
618 |
equal(m.get(k), null); |
619 |
if (maybe(2)) |
620 |
equal(m.remove(k), null); |
621 |
} |
622 |
|
623 |
static void checkUnusedElt(NavigableSet s, Object e) { |
624 |
if (maybe(2)) |
625 |
check(! s.contains(e)); |
626 |
if (maybe(2)) { |
627 |
check(s.ceiling(e) != e); |
628 |
check(s.floor(e) != e); |
629 |
} |
630 |
if (maybe(2)) |
631 |
check(! s.remove(e)); |
632 |
} |
633 |
|
634 |
static Fun remover(final Iterator it) { |
635 |
return () -> it.remove(); |
636 |
} |
637 |
|
638 |
static MapFrobber randomRemover(NavigableMap m) { |
639 |
final Integer k = usedKey(m); |
640 |
final MapFrobber[] randomRemovers = { |
641 |
new MapFrobber() {void frob(NavigableMap m) { |
642 |
Map.Entry e = m.firstEntry(); |
643 |
equal(m.pollFirstEntry(), e); |
644 |
checkUnusedKey(m, e.getKey());}}, |
645 |
new MapFrobber() {void frob(NavigableMap m) { |
646 |
Map.Entry e = m.lastEntry(); |
647 |
equal(m.pollLastEntry(), e); |
648 |
checkUnusedKey(m, e.getKey());}}, |
649 |
new MapFrobber() {void frob(NavigableMap m) { |
650 |
check(m.remove(k) != null); |
651 |
checkUnusedKey(m, k);}}, |
652 |
new MapFrobber() {void frob(NavigableMap m) { |
653 |
m.subMap(k, true, k, true).clear(); |
654 |
checkUnusedKey(m, k);}}, |
655 |
new MapFrobber() {void frob(NavigableMap m) { |
656 |
m.descendingMap().subMap(k, true, k, true).clear(); |
657 |
checkUnusedKey(m, k);}}, |
658 |
new MapFrobber() {void frob(NavigableMap m) { |
659 |
final Iterator it = m.keySet().iterator(); |
660 |
while (it.hasNext()) |
661 |
if (it.next().equals(k)) { |
662 |
it.remove(); |
663 |
if (maybe(2)) |
664 |
THROWS(IllegalStateException.class, |
665 |
() -> it.remove()); |
666 |
} |
667 |
checkUnusedKey(m, k);}}, |
668 |
new MapFrobber() {void frob(NavigableMap m) { |
669 |
final Iterator it = m.navigableKeySet().descendingIterator(); |
670 |
while (it.hasNext()) |
671 |
if (it.next().equals(k)) { |
672 |
it.remove(); |
673 |
if (maybe(2)) |
674 |
THROWS(IllegalStateException.class, |
675 |
() -> it.remove()); |
676 |
} |
677 |
checkUnusedKey(m, k);}}, |
678 |
new MapFrobber() {void frob(NavigableMap m) { |
679 |
final Iterator<Map.Entry> it = m.entrySet().iterator(); |
680 |
while (it.hasNext()) |
681 |
if (it.next().getKey().equals(k)) { |
682 |
it.remove(); |
683 |
if (maybe(2)) |
684 |
THROWS(IllegalStateException.class, remover(it)); |
685 |
} |
686 |
checkUnusedKey(m, k);}}, |
687 |
}; |
688 |
|
689 |
return randomRemovers[rnd.nextInt(randomRemovers.length)]; |
690 |
} |
691 |
|
692 |
static SetFrobber randomRemover(NavigableSet s) { |
693 |
final Integer e = usedElt(s); |
694 |
|
695 |
final SetFrobber[] randomRemovers = { |
696 |
new SetFrobber() {void frob(NavigableSet s) { |
697 |
Object e = s.first(); |
698 |
equal(s.pollFirst(), e); |
699 |
checkUnusedElt(s, e);}}, |
700 |
new SetFrobber() {void frob(NavigableSet s) { |
701 |
Object e = s.last(); |
702 |
equal(s.pollLast(), e); |
703 |
checkUnusedElt(s, e);}}, |
704 |
new SetFrobber() {void frob(NavigableSet s) { |
705 |
check(s.remove(e)); |
706 |
checkUnusedElt(s, e);}}, |
707 |
new SetFrobber() {void frob(NavigableSet s) { |
708 |
s.subSet(e, true, e, true).clear(); |
709 |
checkUnusedElt(s, e);}}, |
710 |
new SetFrobber() {void frob(NavigableSet s) { |
711 |
s.descendingSet().subSet(e, true, e, true).clear(); |
712 |
checkUnusedElt(s, e);}}, |
713 |
new SetFrobber() {void frob(NavigableSet s) { |
714 |
final Iterator it = s.iterator(); |
715 |
while (it.hasNext()) |
716 |
if (it.next().equals(e)) { |
717 |
it.remove(); |
718 |
if (maybe(2)) |
719 |
THROWS(IllegalStateException.class, |
720 |
() -> it.remove()); |
721 |
} |
722 |
checkUnusedElt(s, e);}}, |
723 |
new SetFrobber() {void frob(NavigableSet s) { |
724 |
final Iterator it = s.descendingSet().iterator(); |
725 |
while (it.hasNext()) |
726 |
if (it.next().equals(e)) { |
727 |
it.remove(); |
728 |
if (maybe(2)) |
729 |
THROWS(IllegalStateException.class, |
730 |
() -> it.remove()); |
731 |
} |
732 |
checkUnusedElt(s, e);}}, |
733 |
new SetFrobber() {void frob(NavigableSet s) { |
734 |
final Iterator it = s.descendingIterator(); |
735 |
while (it.hasNext()) |
736 |
if (it.next().equals(e)) { |
737 |
it.remove(); |
738 |
if (maybe(2)) |
739 |
THROWS(IllegalStateException.class, |
740 |
() -> it.remove()); |
741 |
} |
742 |
checkUnusedElt(s, e);}} |
743 |
}; |
744 |
|
745 |
return randomRemovers[rnd.nextInt(randomRemovers.length)]; |
746 |
} |
747 |
|
748 |
static void lockStep(NavigableMap m1, |
749 |
NavigableMap m2) { |
750 |
if (! (thorough || maybe(3))) return; |
751 |
if (maybe(4)) m1 = serialClone(m1); |
752 |
if (maybe(4)) m2 = serialClone(m2); |
753 |
|
754 |
List<NavigableMap> maps = Arrays.asList(m1, m2); |
755 |
for (NavigableMap m : maps) testEmptyMap(m); |
756 |
final Set<Integer> ints = new HashSet<>(); |
757 |
while (ints.size() < size) |
758 |
ints.add(rnd.nextInt(1024)); |
759 |
final Integer[] elts = ints.toArray(new Integer[size]); |
760 |
for (int i = 0; i < size; i++) { |
761 |
MapFrobber adder = randomAdder(m1); |
762 |
for (final NavigableMap m : maps) { |
763 |
adder.frob(m); |
764 |
equal(m.size(), i+1); |
765 |
} |
766 |
equalNavigableMaps(m1, m2); |
767 |
} |
768 |
for (final NavigableMap m : maps) { |
769 |
final Object e = usedKey(m); |
770 |
THROWS(IllegalArgumentException.class, |
771 |
() -> {m.subMap(e,true,e,false) |
772 |
.subMap(e,true,e,true);}, |
773 |
() -> {m.subMap(e,false,e,true) |
774 |
.subMap(e,true,e,true);}, |
775 |
() -> m.tailMap(e,false).tailMap(e,true), |
776 |
() -> m.headMap(e,false).headMap(e,true)); |
777 |
} |
778 |
//System.out.printf("%s%n", m1); |
779 |
for (int i = size; i > 0; i--) { |
780 |
MapFrobber remover = randomRemover(m1); |
781 |
for (final NavigableMap m : maps) { |
782 |
remover.frob(m); |
783 |
equal(m.size(), i-1); |
784 |
} |
785 |
equalNavigableMaps(m1, m2); |
786 |
} |
787 |
for (NavigableMap m : maps) testEmptyMap(m); |
788 |
} |
789 |
|
790 |
static void lockStep(NavigableSet s1, |
791 |
NavigableSet s2) { |
792 |
if (! (thorough || maybe(3))) return; |
793 |
if (maybe(4)) s1 = serialClone(s1); |
794 |
if (maybe(4)) s2 = serialClone(s2); |
795 |
|
796 |
List<NavigableSet> sets = Arrays.asList(s1, s2); |
797 |
for (NavigableSet s : sets) testEmptySet(s); |
798 |
final Set<Integer> ints = new HashSet<>(); |
799 |
while (ints.size() < size) |
800 |
ints.add(rnd.nextInt(1024)); |
801 |
final Integer[] elts = ints.toArray(new Integer[size]); |
802 |
for (int i = 0; i < size; i++) { |
803 |
SetFrobber adder = randomAdder(s1); |
804 |
for (final NavigableSet s : sets) { |
805 |
adder.frob(s); |
806 |
equal(s.size(), i+1); |
807 |
} |
808 |
equalNavigableSets(s1, s2); |
809 |
} |
810 |
for (final NavigableSet s : sets) { |
811 |
final Object e = usedElt(s); |
812 |
THROWS(IllegalArgumentException.class, |
813 |
() -> {s.subSet(e,true,e,false) |
814 |
.subSet(e,true,e,true);}, |
815 |
() -> {s.subSet(e,false,e,true) |
816 |
.subSet(e,true,e,true);}, |
817 |
() -> s.tailSet(e,false).tailSet(e,true), |
818 |
() -> s.headSet(e,false).headSet(e,true)); |
819 |
} |
820 |
//System.out.printf("%s%n", s1); |
821 |
for (int i = size; i > 0; i--) { |
822 |
SetFrobber remover = randomRemover(s1); |
823 |
for (final NavigableSet s : sets) { |
824 |
remover.frob(s); |
825 |
equal(s.size(), i-1); |
826 |
} |
827 |
equalNavigableSets(s1, s2); |
828 |
} |
829 |
for (NavigableSet s : sets) testEmptySet(s); |
830 |
} |
831 |
|
832 |
//--------------------- Infrastructure --------------------------- |
833 |
static volatile int passed = 0, failed = 0; |
834 |
static void pass() { passed++; } |
835 |
static void fail() { failed++; Thread.dumpStack(); } |
836 |
static void fail(String msg) { System.out.println(msg); fail(); } |
837 |
static void unexpected(Throwable t) { failed++; t.printStackTrace(); } |
838 |
static void check(boolean cond) { if (cond) pass(); else fail(); } |
839 |
static void equal(Object x, Object y) { |
840 |
if (x == null ? y == null : x.equals(y)) pass(); |
841 |
else {System.out.println(x + " not equal to " + y); fail();}} |
842 |
static void equal2(Object x, Object y) {equal(x, y); equal(y, x);} |
843 |
public static void main(String[] args) throws Throwable { |
844 |
try { realMain(args); } catch (Throwable t) { unexpected(t); } |
845 |
|
846 |
System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed); |
847 |
if (failed > 0) throw new Exception("Some tests failed"); |
848 |
} |
849 |
interface Fun {void f() throws Throwable;} |
850 |
static void THROWS(Class<? extends Throwable> k, Fun... fs) { |
851 |
for (Fun f : fs) |
852 |
try { f.f(); fail("Expected " + k.getName() + " not thrown"); } |
853 |
catch (Throwable t) { |
854 |
if (k.isAssignableFrom(t.getClass())) pass(); |
855 |
else unexpected(t);}} |
856 |
static byte[] serializedForm(Object obj) { |
857 |
try { |
858 |
ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
859 |
new ObjectOutputStream(baos).writeObject(obj); |
860 |
return baos.toByteArray(); |
861 |
} catch (IOException e) { throw new RuntimeException(e); }} |
862 |
static Object readObject(byte[] bytes) |
863 |
throws IOException, ClassNotFoundException { |
864 |
InputStream is = new ByteArrayInputStream(bytes); |
865 |
return new ObjectInputStream(is).readObject();} |
866 |
@SuppressWarnings("unchecked") |
867 |
static <T> T serialClone(T obj) { |
868 |
try { return (T) readObject(serializedForm(obj)); } |
869 |
catch (Error|RuntimeException e) { throw e; } |
870 |
catch (Throwable e) { throw new RuntimeException(e); } |
871 |
} |
872 |
} |