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jsr166 |
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/* |
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* Copyright (c) 2013, 2015, 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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* @test |
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* @bug 8020156 8020009 8022326 8012913 8024405 8024408 8071477 |
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* @run testng SpliteratorCharacteristics |
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*/ |
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import org.testng.annotations.Test; |
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import java.util.Arrays; |
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import java.util.Collection; |
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import java.util.Comparator; |
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import java.util.HashMap; |
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import java.util.HashSet; |
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import java.util.LinkedHashMap; |
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import java.util.LinkedHashSet; |
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import java.util.List; |
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import java.util.Map; |
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import java.util.PrimitiveIterator; |
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import java.util.Set; |
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import java.util.SortedMap; |
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import java.util.SortedSet; |
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import java.util.Spliterator; |
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import java.util.Spliterators; |
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import java.util.TreeMap; |
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import java.util.TreeSet; |
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import java.util.WeakHashMap; |
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import java.util.concurrent.ConcurrentSkipListMap; |
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import java.util.concurrent.ConcurrentSkipListSet; |
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import java.util.function.Supplier; |
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import java.util.stream.DoubleStream; |
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import java.util.stream.IntStream; |
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import java.util.stream.LongStream; |
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import static org.testng.Assert.*; |
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@Test |
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public class SpliteratorCharacteristics { |
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public void testSpliteratorFromCharSequence() { |
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class CharSequenceImpl implements CharSequence { |
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final String s; |
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public CharSequenceImpl(String s) { |
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this.s = s; |
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} |
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@Override |
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public int length() { |
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return s.length(); |
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} |
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@Override |
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public char charAt(int index) { |
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return s.charAt(index); |
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} |
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@Override |
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public CharSequence subSequence(int start, int end) { |
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return s.subSequence(start, end); |
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} |
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@Override |
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public String toString() { |
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return s; |
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} |
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} |
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CharSequence cs = "A"; |
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Spliterator.OfInt s = cs.chars().spliterator(); |
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assertCharacteristics(s, Spliterator.IMMUTABLE | Spliterator.ORDERED | |
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Spliterator.SIZED | Spliterator.SUBSIZED); |
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assertHasNotCharacteristics(s, Spliterator.CONCURRENT); |
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s = cs.codePoints().spliterator(); |
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assertCharacteristics(s, Spliterator.IMMUTABLE | Spliterator.ORDERED); |
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assertHasNotCharacteristics(s, Spliterator.CONCURRENT); |
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for (CharSequence c : Arrays.asList(new CharSequenceImpl("A"), |
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new StringBuilder("A"), |
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new StringBuffer("A"))) { |
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s = cs.chars().spliterator(); |
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assertCharacteristics(s, Spliterator.ORDERED | |
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Spliterator.SIZED | Spliterator.SUBSIZED); |
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assertHasNotCharacteristics(s, Spliterator.CONCURRENT); |
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s = cs.codePoints().spliterator(); |
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assertCharacteristics(s, Spliterator.ORDERED); |
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assertHasNotCharacteristics(s, Spliterator.CONCURRENT); |
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} |
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} |
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public void testSpliteratorFromCollection() { |
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List<Integer> l = Arrays.asList(1, 2, 3, 4); |
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{ |
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Spliterator<?> s = Spliterators.spliterator(l, 0); |
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assertCharacteristics(s, Spliterator.SIZED | Spliterator.SUBSIZED); |
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assertHasNotCharacteristics(s, Spliterator.CONCURRENT); |
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} |
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{ |
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Spliterator<?> s = Spliterators.spliterator(l, Spliterator.CONCURRENT); |
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assertHasNotCharacteristics(s, Spliterator.SIZED | Spliterator.SUBSIZED); |
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assertCharacteristics(s, Spliterator.CONCURRENT); |
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} |
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{ |
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jsr166 |
1.2 |
Spliterator<?> s = Spliterators.spliterator(l.iterator(), 1, 0); |
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jsr166 |
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assertCharacteristics(s, Spliterator.SIZED | Spliterator.SUBSIZED); |
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assertHasNotCharacteristics(s, Spliterator.CONCURRENT); |
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} |
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{ |
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jsr166 |
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Spliterator<?> s = Spliterators.spliterator(l.iterator(), 1, Spliterator.CONCURRENT); |
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jsr166 |
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assertHasNotCharacteristics(s, Spliterator.SIZED | Spliterator.SUBSIZED); |
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assertCharacteristics(s, Spliterator.CONCURRENT); |
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} |
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{ |
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jsr166 |
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Spliterator<?> s = Spliterators.spliteratorUnknownSize(l.iterator(), 0); |
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jsr166 |
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assertHasNotCharacteristics(s, Spliterator.SIZED | Spliterator.SUBSIZED); |
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} |
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{ |
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Spliterator<?> s = Spliterators.spliteratorUnknownSize( |
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l.iterator(), Spliterator.SIZED | Spliterator.SUBSIZED); |
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assertHasNotCharacteristics(s, Spliterator.SIZED | Spliterator.SUBSIZED); |
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} |
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} |
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public void testSpliteratorOfIntFromIterator() { |
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Supplier<PrimitiveIterator.OfInt> si = () -> IntStream.of(1, 2, 3, 4).iterator(); |
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{ |
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Spliterator<?> s = Spliterators.spliterator(si.get(), 1, 0); |
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assertCharacteristics(s, Spliterator.SIZED | Spliterator.SUBSIZED); |
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assertHasNotCharacteristics(s, Spliterator.CONCURRENT); |
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} |
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{ |
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Spliterator<?> s = Spliterators.spliterator(si.get(), 1, Spliterator.CONCURRENT); |
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assertHasNotCharacteristics(s, Spliterator.SIZED | Spliterator.SUBSIZED); |
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assertCharacteristics(s, Spliterator.CONCURRENT); |
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} |
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{ |
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Spliterator<?> s = Spliterators.spliteratorUnknownSize(si.get(), 0); |
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assertHasNotCharacteristics(s, Spliterator.SIZED | Spliterator.SUBSIZED); |
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} |
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{ |
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Spliterator<?> s = Spliterators.spliteratorUnknownSize( |
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si.get(), Spliterator.SIZED | Spliterator.SUBSIZED); |
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assertHasNotCharacteristics(s, Spliterator.SIZED | Spliterator.SUBSIZED); |
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} |
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} |
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public void testSpliteratorOfLongFromIterator() { |
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Supplier<PrimitiveIterator.OfLong> si = () -> LongStream.of(1, 2, 3, 4).iterator(); |
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{ |
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Spliterator<?> s = Spliterators.spliterator(si.get(), 1, 0); |
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assertCharacteristics(s, Spliterator.SIZED | Spliterator.SUBSIZED); |
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assertHasNotCharacteristics(s, Spliterator.CONCURRENT); |
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} |
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{ |
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Spliterator<?> s = Spliterators.spliterator(si.get(), 1, Spliterator.CONCURRENT); |
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assertHasNotCharacteristics(s, Spliterator.SIZED | Spliterator.SUBSIZED); |
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assertCharacteristics(s, Spliterator.CONCURRENT); |
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} |
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{ |
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Spliterator<?> s = Spliterators.spliteratorUnknownSize(si.get(), 0); |
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assertHasNotCharacteristics(s, Spliterator.SIZED | Spliterator.SUBSIZED); |
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} |
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{ |
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Spliterator<?> s = Spliterators.spliteratorUnknownSize( |
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si.get(), Spliterator.SIZED | Spliterator.SUBSIZED); |
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assertHasNotCharacteristics(s, Spliterator.SIZED | Spliterator.SUBSIZED); |
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} |
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} |
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public void testSpliteratorOfDoubleFromIterator() { |
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Supplier<PrimitiveIterator.OfDouble> si = () -> DoubleStream.of(1, 2, 3, 4).iterator(); |
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{ |
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Spliterator<?> s = Spliterators.spliterator(si.get(), 1, 0); |
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assertCharacteristics(s, Spliterator.SIZED | Spliterator.SUBSIZED); |
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assertHasNotCharacteristics(s, Spliterator.CONCURRENT); |
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} |
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{ |
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Spliterator<?> s = Spliterators.spliterator(si.get(), 1, Spliterator.CONCURRENT); |
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assertHasNotCharacteristics(s, Spliterator.SIZED | Spliterator.SUBSIZED); |
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assertCharacteristics(s, Spliterator.CONCURRENT); |
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} |
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{ |
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Spliterator<?> s = Spliterators.spliteratorUnknownSize(si.get(), 0); |
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assertHasNotCharacteristics(s, Spliterator.SIZED | Spliterator.SUBSIZED); |
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} |
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{ |
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Spliterator<?> s = Spliterators.spliteratorUnknownSize( |
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si.get(), Spliterator.SIZED | Spliterator.SUBSIZED); |
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assertHasNotCharacteristics(s, Spliterator.SIZED | Spliterator.SUBSIZED); |
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} |
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} |
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// |
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public void testHashMap() { |
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assertMapCharacteristics(new HashMap<>(), |
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Spliterator.SIZED | Spliterator.DISTINCT); |
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} |
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public void testWeakHashMap() { |
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assertMapCharacteristics(new WeakHashMap<>(), |
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Spliterator.DISTINCT); |
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} |
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public void testHashSet() { |
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assertSetCharacteristics(new HashSet<>(), |
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Spliterator.SIZED | Spliterator.DISTINCT); |
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} |
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public void testLinkedHashMap() { |
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assertMapCharacteristics(new LinkedHashMap<>(), |
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Spliterator.SIZED | Spliterator.DISTINCT | |
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Spliterator.ORDERED); |
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} |
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public void testLinkedHashSet() { |
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assertSetCharacteristics(new LinkedHashSet<>(), |
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Spliterator.SIZED | Spliterator.DISTINCT | |
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Spliterator.ORDERED); |
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} |
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public void testTreeMap() { |
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assertSortedMapCharacteristics(new TreeMap<>(), |
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Spliterator.SIZED | Spliterator.DISTINCT | |
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Spliterator.SORTED | Spliterator.ORDERED); |
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} |
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public void testTreeMapWithComparator() { |
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assertSortedMapCharacteristics(new TreeMap<>(Comparator.reverseOrder()), |
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Spliterator.SIZED | Spliterator.DISTINCT | |
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Spliterator.SORTED | Spliterator.ORDERED); |
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} |
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public void testTreeSet() { |
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assertSortedSetCharacteristics(new TreeSet<>(), |
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Spliterator.SIZED | Spliterator.DISTINCT | |
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Spliterator.SORTED | Spliterator.ORDERED); |
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} |
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public void testTreeSetWithComparator() { |
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assertSortedSetCharacteristics(new TreeSet<>(Comparator.reverseOrder()), |
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Spliterator.SIZED | Spliterator.DISTINCT | |
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Spliterator.SORTED | Spliterator.ORDERED); |
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} |
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public void testConcurrentSkipListMap() { |
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assertSortedMapCharacteristics(new ConcurrentSkipListMap<>(), |
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Spliterator.CONCURRENT | Spliterator.NONNULL | |
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Spliterator.DISTINCT | Spliterator.SORTED | |
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Spliterator.ORDERED); |
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} |
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public void testConcurrentSkipListMapWithComparator() { |
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assertSortedMapCharacteristics(new ConcurrentSkipListMap<>(Comparator.<Integer>reverseOrder()), |
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Spliterator.CONCURRENT | Spliterator.NONNULL | |
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Spliterator.DISTINCT | Spliterator.SORTED | |
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Spliterator.ORDERED); |
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} |
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public void testConcurrentSkipListSet() { |
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assertSortedSetCharacteristics(new ConcurrentSkipListSet<>(), |
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Spliterator.CONCURRENT | Spliterator.NONNULL | |
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Spliterator.DISTINCT | Spliterator.SORTED | |
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Spliterator.ORDERED); |
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} |
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public void testConcurrentSkipListSetWithComparator() { |
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assertSortedSetCharacteristics(new ConcurrentSkipListSet<>(Comparator.reverseOrder()), |
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Spliterator.CONCURRENT | Spliterator.NONNULL | |
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Spliterator.DISTINCT | Spliterator.SORTED | |
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Spliterator.ORDERED); |
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} |
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// |
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void assertMapCharacteristics(Map<Integer, String> m, int keyCharacteristics) { |
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assertMapCharacteristics(m, keyCharacteristics, 0); |
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} |
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void assertMapCharacteristics(Map<Integer, String> m, int keyCharacteristics, int notValueCharacteristics) { |
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initMap(m); |
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assertCharacteristics(m.keySet(), keyCharacteristics); |
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assertCharacteristics(m.values(), |
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keyCharacteristics & ~(Spliterator.DISTINCT | notValueCharacteristics)); |
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assertCharacteristics(m.entrySet(), keyCharacteristics); |
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if ((keyCharacteristics & Spliterator.SORTED) == 0) { |
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assertISEComparator(m.keySet()); |
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assertISEComparator(m.values()); |
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assertISEComparator(m.entrySet()); |
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} |
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} |
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void assertSetCharacteristics(Set<Integer> s, int keyCharacteristics) { |
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initSet(s); |
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assertCharacteristics(s, keyCharacteristics); |
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if ((keyCharacteristics & Spliterator.SORTED) == 0) { |
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assertISEComparator(s); |
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} |
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} |
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void assertSortedMapCharacteristics(SortedMap<Integer, String> m, int keyCharacteristics) { |
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assertMapCharacteristics(m, keyCharacteristics, Spliterator.SORTED); |
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Set<Integer> keys = m.keySet(); |
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if (m.comparator() != null) { |
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assertNotNullComparator(keys); |
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} |
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else { |
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assertNullComparator(keys); |
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} |
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assertISEComparator(m.values()); |
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assertNotNullComparator(m.entrySet()); |
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} |
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void assertSortedSetCharacteristics(SortedSet<Integer> s, int keyCharacteristics) { |
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assertSetCharacteristics(s, keyCharacteristics); |
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if (s.comparator() != null) { |
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assertNotNullComparator(s); |
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} |
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else { |
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assertNullComparator(s); |
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} |
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} |
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void initMap(Map<Integer, String> m) { |
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m.put(1, "4"); |
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m.put(2, "3"); |
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m.put(3, "2"); |
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m.put(4, "1"); |
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} |
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void initSet(Set<Integer> s) { |
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s.addAll(Arrays.asList(1, 2, 3, 4)); |
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} |
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void assertCharacteristics(Collection<?> c, int expectedCharacteristics) { |
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assertCharacteristics(c.spliterator(), expectedCharacteristics); |
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} |
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391 |
|
|
void assertCharacteristics(Spliterator<?> s, int expectedCharacteristics) { |
392 |
|
|
assertTrue(s.hasCharacteristics(expectedCharacteristics), |
393 |
|
|
"Spliterator characteristics"); |
394 |
|
|
} |
395 |
|
|
|
396 |
|
|
void assertHasNotCharacteristics(Spliterator<?> s, int expectedCharacteristics) { |
397 |
|
|
assertFalse(s.hasCharacteristics(expectedCharacteristics), |
398 |
|
|
"Spliterator characteristics"); |
399 |
|
|
} |
400 |
|
|
|
401 |
|
|
void assertNullComparator(Collection<?> c) { |
402 |
|
|
assertNull(c.spliterator().getComparator(), |
403 |
|
|
"Comparator of Spliterator of Collection"); |
404 |
|
|
} |
405 |
|
|
|
406 |
|
|
void assertNotNullComparator(Collection<?> c) { |
407 |
|
|
assertNotNull(c.spliterator().getComparator(), |
408 |
|
|
"Comparator of Spliterator of Collection"); |
409 |
|
|
} |
410 |
|
|
|
411 |
|
|
void assertISEComparator(Collection<?> c) { |
412 |
|
|
assertISEComparator(c.spliterator()); |
413 |
|
|
} |
414 |
|
|
|
415 |
|
|
void assertISEComparator(Spliterator<?> s) { |
416 |
|
|
boolean caught = false; |
417 |
|
|
try { |
418 |
|
|
s.getComparator(); |
419 |
|
|
} |
420 |
|
|
catch (IllegalStateException e) { |
421 |
|
|
caught = true; |
422 |
|
|
} |
423 |
|
|
assertTrue(caught, "Throwing IllegalStateException"); |
424 |
|
|
} |
425 |
|
|
} |