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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()); |
| 380 |
Comparator cmp = comparator(m); |
| 381 |
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)); |
| 397 |
} else { |
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Object a = m.firstKey(); |
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Object z = m.lastKey(); |
| 400 |
equal(m.lowerKey(a), null); |
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equal(m.higherKey(z), null); |
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equal(a, m.firstEntry().getKey()); |
| 403 |
equal(z, m.lastEntry().getKey()); |
| 404 |
equal2(m, m.tailMap(a)); |
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equal2(m, m.headMap(z, true)); |
| 406 |
equal2(m, m.subMap(a, true, z, true)); |
| 407 |
|
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testEmptyMap(m.subMap(a, true, a, false)); |
| 409 |
testEmptyMap(m.subMap(z, true, z, false)); |
| 410 |
testEmptyMap(m.headMap(a, false)); |
| 411 |
testEmptyMap(m.tailMap(z, false)); |
| 412 |
|
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equal2(m.headMap(a, true), singletonMap(a, m.get(a))); |
| 414 |
equal2(m.tailMap(z, true), singletonMap(z, m.get(z))); |
| 415 |
} |
| 416 |
|
| 417 |
Iterator[] kits = new Iterator[] { |
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m.keySet().iterator(), |
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m.descendingMap().descendingKeySet().iterator(), |
| 420 |
m.descendingKeySet().descendingSet().iterator(), |
| 421 |
}; |
| 422 |
Iterator[] vits = new Iterator[] { |
| 423 |
m.values().iterator(), |
| 424 |
m.descendingMap().descendingMap().values().iterator(), |
| 425 |
}; |
| 426 |
Iterator[] eits = new Iterator[] { |
| 427 |
m.entrySet().iterator(), |
| 428 |
m.descendingMap().descendingMap().entrySet().iterator(), |
| 429 |
}; |
| 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); |
| 442 |
for (Iterator eit : eits) equalNext(eit, e); |
| 443 |
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 |
} |
| 456 |
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 |
} |
