| /* |
| * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package java.util.stream; |
| |
| import org.testng.annotations.DataProvider; |
| import org.testng.annotations.Test; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Spliterator; |
| |
| import static java.util.stream.Collectors.toList; |
| import static org.testng.Assert.assertEquals; |
| |
| /** |
| * @bug 8012987 |
| */ |
| @Test |
| public class SliceSpliteratorTest extends LoggingTestCase { |
| |
| static class UnorderedContentAsserter<T> implements SpliteratorTestHelper.ContentAsserter<T> { |
| Collection<T> source; |
| |
| UnorderedContentAsserter(Collection<T> source) { |
| this.source = source; |
| } |
| |
| @Override |
| public void assertContents(Collection<T> actual, Collection<T> expected, boolean isOrdered) { |
| if (isOrdered) { |
| assertEquals(actual, expected); |
| } |
| else { |
| assertEquals(actual.size(), expected.size()); |
| assertTrue(source.containsAll(actual)); |
| } |
| } |
| } |
| |
| interface SliceTester { |
| void test(int size, int skip, int limit); |
| } |
| |
| @DataProvider(name = "sliceSpliteratorDataProvider") |
| public static Object[][] sliceSpliteratorDataProvider() { |
| List<Object[]> data = new ArrayList<>(); |
| |
| // SIZED/SUBSIZED slice spliterator |
| |
| { |
| SliceTester r = (size, skip, limit) -> { |
| final Collection<Integer> source = IntStream.range(0, size).boxed().collect(toList()); |
| |
| SpliteratorTestHelper.testSpliterator(() -> { |
| Spliterator<Integer> s = Arrays.spliterator(source.stream().toArray(Integer[]::new)); |
| |
| return new StreamSpliterators.SliceSpliterator.OfRef<>(s, skip, limit); |
| }); |
| }; |
| data.add(new Object[]{"StreamSpliterators.SliceSpliterator.OfRef", r}); |
| } |
| |
| { |
| SliceTester r = (size, skip, limit) -> { |
| final Collection<Integer> source = IntStream.range(0, size).boxed().collect(toList()); |
| |
| SpliteratorTestHelper.testIntSpliterator(() -> { |
| Spliterator.OfInt s = Arrays.spliterator(source.stream().mapToInt(i->i).toArray()); |
| |
| return new StreamSpliterators.SliceSpliterator.OfInt(s, skip, limit); |
| }); |
| }; |
| data.add(new Object[]{"StreamSpliterators.SliceSpliterator.OfInt", r}); |
| } |
| |
| { |
| SliceTester r = (size, skip, limit) -> { |
| final Collection<Long> source = LongStream.range(0, size).boxed().collect(toList()); |
| |
| SpliteratorTestHelper.testLongSpliterator(() -> { |
| Spliterator.OfLong s = Arrays.spliterator(source.stream().mapToLong(i->i).toArray()); |
| |
| return new StreamSpliterators.SliceSpliterator.OfLong(s, skip, limit); |
| }); |
| }; |
| data.add(new Object[]{"StreamSpliterators.SliceSpliterator.OfLong", r}); |
| } |
| |
| { |
| SliceTester r = (size, skip, limit) -> { |
| final Collection<Double> source = LongStream.range(0, size).asDoubleStream().boxed().collect(toList()); |
| |
| SpliteratorTestHelper.testDoubleSpliterator(() -> { |
| Spliterator.OfDouble s = Arrays.spliterator(source.stream().mapToDouble(i->i).toArray()); |
| |
| return new StreamSpliterators.SliceSpliterator.OfDouble(s, skip, limit); |
| }); |
| }; |
| data.add(new Object[]{"StreamSpliterators.SliceSpliterator.OfLong", r}); |
| } |
| |
| |
| // Unordered slice spliterator |
| |
| { |
| SliceTester r = (size, skip, limit) -> { |
| final Collection<Integer> source = IntStream.range(0, size).boxed().collect(toList()); |
| final UnorderedContentAsserter<Integer> uca = new UnorderedContentAsserter<>(source); |
| |
| SpliteratorTestHelper.testSpliterator(() -> { |
| Spliterator<Integer> s = Arrays.spliterator(source.stream().toArray(Integer[]::new)); |
| |
| return new StreamSpliterators.UnorderedSliceSpliterator.OfRef<>(s, skip, limit); |
| }, uca); |
| }; |
| data.add(new Object[]{"StreamSpliterators.UnorderedSliceSpliterator.OfRef", r}); |
| } |
| |
| { |
| SliceTester r = (size, skip, limit) -> { |
| final Collection<Integer> source = IntStream.range(0, size).boxed().collect(toList()); |
| final UnorderedContentAsserter<Integer> uca = new UnorderedContentAsserter<>(source); |
| |
| SpliteratorTestHelper.testIntSpliterator(() -> { |
| Spliterator.OfInt s = Arrays.spliterator(source.stream().mapToInt(i->i).toArray()); |
| |
| return new StreamSpliterators.UnorderedSliceSpliterator.OfInt(s, skip, limit); |
| }, uca); |
| }; |
| data.add(new Object[]{"StreamSpliterators.UnorderedSliceSpliterator.OfInt", r}); |
| } |
| |
| { |
| SliceTester r = (size, skip, limit) -> { |
| final Collection<Long> source = LongStream.range(0, size).boxed().collect(toList()); |
| final UnorderedContentAsserter<Long> uca = new UnorderedContentAsserter<>(source); |
| |
| SpliteratorTestHelper.testLongSpliterator(() -> { |
| Spliterator.OfLong s = Arrays.spliterator(source.stream().mapToLong(i->i).toArray()); |
| |
| return new StreamSpliterators.UnorderedSliceSpliterator.OfLong(s, skip, limit); |
| }, uca); |
| }; |
| data.add(new Object[]{"StreamSpliterators.UnorderedSliceSpliterator.OfLong", r}); |
| } |
| |
| { |
| SliceTester r = (size, skip, limit) -> { |
| final Collection<Double> source = LongStream.range(0, size).asDoubleStream().boxed().collect(toList()); |
| final UnorderedContentAsserter<Double> uca = new UnorderedContentAsserter<>(source); |
| |
| SpliteratorTestHelper.testDoubleSpliterator(() -> { |
| Spliterator.OfDouble s = Arrays.spliterator(LongStream.range(0, SIZE).asDoubleStream().toArray()); |
| |
| return new StreamSpliterators.UnorderedSliceSpliterator.OfDouble(s, skip, limit); |
| }, uca); |
| }; |
| data.add(new Object[]{"StreamSpliterators.UnorderedSliceSpliterator.OfLong", r}); |
| } |
| |
| return data.toArray(new Object[0][]); |
| } |
| |
| static final int SIZE = 256; |
| |
| static final int STEP = 32; |
| |
| @Test(dataProvider = "sliceSpliteratorDataProvider") |
| public void testSliceSpliterator(String description, SliceTester r) { |
| setContext("size", SIZE); |
| for (int skip = 0; skip < SIZE; skip += STEP) { |
| setContext("skip", skip); |
| for (int limit = 0; limit < SIZE; limit += STEP) { |
| setContext("limit", skip); |
| r.test(SIZE, skip, limit); |
| } |
| } |
| } |
| } |