426 lines
15 KiB
Java
426 lines
15 KiB
Java
/*
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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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Spliterator<?> s = Spliterators.spliterator(l.iterator(), 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(l.iterator(), 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(l.iterator(), 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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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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void assertCharacteristics(Spliterator<?> s, int expectedCharacteristics) {
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assertTrue(s.hasCharacteristics(expectedCharacteristics),
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"Spliterator characteristics");
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}
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void assertHasNotCharacteristics(Spliterator<?> s, int expectedCharacteristics) {
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assertFalse(s.hasCharacteristics(expectedCharacteristics),
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"Spliterator characteristics");
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}
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void assertNullComparator(Collection<?> c) {
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assertNull(c.spliterator().getComparator(),
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"Comparator of Spliterator of Collection");
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}
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void assertNotNullComparator(Collection<?> c) {
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assertNotNull(c.spliterator().getComparator(),
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"Comparator of Spliterator of Collection");
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}
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void assertISEComparator(Collection<?> c) {
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assertISEComparator(c.spliterator());
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}
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void assertISEComparator(Spliterator<?> s) {
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boolean caught = false;
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try {
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s.getComparator();
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}
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catch (IllegalStateException e) {
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caught = true;
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}
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assertTrue(caught, "Throwing IllegalStateException");
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}
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}
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