| /* |
| * Copyright (c) 2012, 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 org.openjdk.tests.java.util.stream; |
| |
| import java.util.Spliterator; |
| import java.util.stream.BaseStream; |
| import java.util.stream.OpTestCase; |
| import java.util.stream.StreamTestDataProvider; |
| |
| import org.testng.annotations.Test; |
| |
| import java.util.stream.Stream; |
| import java.util.stream.IntStream; |
| import java.util.stream.LongStream; |
| import java.util.stream.DoubleStream; |
| import java.util.stream.TestData; |
| |
| import static java.util.stream.LambdaTestHelpers.*; |
| import static org.testng.Assert.assertEquals; |
| |
| /** |
| * @test |
| * @bug 8021863 |
| */ |
| public class ConcatOpTest extends OpTestCase { |
| |
| // Sanity to make sure all type of stream source works |
| @Test(dataProvider = "StreamTestData<Integer>", dataProviderClass = StreamTestDataProvider.class) |
| public void testOps(String name, TestData.OfRef<Integer> data) { |
| exerciseOpsInt(data, |
| s -> Stream.concat(s, data.stream()), |
| s -> IntStream.concat(s, data.stream().mapToInt(Integer::intValue)), |
| s -> LongStream.concat(s, data.stream().mapToLong(Integer::longValue)), |
| s -> DoubleStream.concat(s, data.stream().mapToDouble(Integer::doubleValue))); |
| } |
| |
| public void testSize() { |
| assertSized(Stream.concat( |
| LongStream.range(0, Long.MAX_VALUE / 2).boxed(), |
| LongStream.range(0, Long.MAX_VALUE / 2).boxed())); |
| |
| assertUnsized(Stream.concat( |
| LongStream.range(0, Long.MAX_VALUE).boxed(), |
| LongStream.range(0, Long.MAX_VALUE).boxed())); |
| |
| assertUnsized(Stream.concat( |
| LongStream.range(0, Long.MAX_VALUE).boxed(), |
| Stream.iterate(0, i -> i + 1))); |
| |
| assertUnsized(Stream.concat( |
| Stream.iterate(0, i -> i + 1), |
| LongStream.range(0, Long.MAX_VALUE).boxed())); |
| } |
| |
| public void testLongSize() { |
| assertSized(LongStream.concat( |
| LongStream.range(0, Long.MAX_VALUE / 2), |
| LongStream.range(0, Long.MAX_VALUE / 2))); |
| |
| assertUnsized(LongStream.concat( |
| LongStream.range(0, Long.MAX_VALUE), |
| LongStream.range(0, Long.MAX_VALUE))); |
| |
| assertUnsized(LongStream.concat( |
| LongStream.range(0, Long.MAX_VALUE), |
| LongStream.iterate(0, i -> i + 1))); |
| |
| assertUnsized(LongStream.concat( |
| LongStream.iterate(0, i -> i + 1), |
| LongStream.range(0, Long.MAX_VALUE))); |
| } |
| |
| public void testIntSize() { |
| assertSized(IntStream.concat( |
| IntStream.range(0, Integer.MAX_VALUE), |
| IntStream.range(0, Integer.MAX_VALUE))); |
| |
| assertUnsized(IntStream.concat( |
| LongStream.range(0, Long.MAX_VALUE).mapToInt(i -> (int) i), |
| LongStream.range(0, Long.MAX_VALUE).mapToInt(i -> (int) i))); |
| |
| assertUnsized(IntStream.concat( |
| LongStream.range(0, Long.MAX_VALUE).mapToInt(i -> (int) i), |
| IntStream.iterate(0, i -> i + 1))); |
| |
| assertUnsized(IntStream.concat( |
| IntStream.iterate(0, i -> i + 1), |
| LongStream.range(0, Long.MAX_VALUE).mapToInt(i -> (int) i))); |
| } |
| |
| public void testDoubleSize() { |
| assertSized(DoubleStream.concat( |
| IntStream.range(0, Integer.MAX_VALUE).mapToDouble(i -> i), |
| IntStream.range(0, Integer.MAX_VALUE).mapToDouble(i -> i))); |
| |
| assertUnsized(DoubleStream.concat( |
| LongStream.range(0, Long.MAX_VALUE).mapToDouble(i -> i), |
| LongStream.range(0, Long.MAX_VALUE).mapToDouble(i -> i))); |
| |
| assertUnsized(DoubleStream.concat( |
| LongStream.range(0, Long.MAX_VALUE).mapToDouble(i -> i), |
| DoubleStream.iterate(0, i -> i + 1))); |
| |
| assertUnsized(DoubleStream.concat( |
| DoubleStream.iterate(0, i -> i + 1), |
| LongStream.range(0, Long.MAX_VALUE).mapToDouble(i -> i))); |
| } |
| |
| void assertUnsized(BaseStream<?, ?> s) { |
| Spliterator<?> sp = s.spliterator(); |
| |
| assertFalse(sp.hasCharacteristics(Spliterator.SIZED | Spliterator.SUBSIZED)); |
| assertEquals(sp.estimateSize(), Long.MAX_VALUE); |
| } |
| |
| void assertSized(BaseStream<?, ?> s) { |
| Spliterator<?> sp = s.spliterator(); |
| |
| assertTrue(sp.hasCharacteristics(Spliterator.SIZED | Spliterator.SUBSIZED)); |
| assertTrue(sp.estimateSize() < Long.MAX_VALUE); |
| } |
| } |