1 /* 2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 package org.openjdk.tests.java.util.stream; 24 25 import java.util.Spliterator; 26 import java.util.stream.BaseStream; 27 import java.util.stream.OpTestCase; 28 import java.util.stream.StreamTestDataProvider; 29 30 import org.testng.annotations.Test; 31 32 import java.util.stream.Stream; 33 import java.util.stream.IntStream; 34 import java.util.stream.LongStream; 35 import java.util.stream.DoubleStream; 36 import java.util.stream.TestData; 37 38 import static java.util.stream.LambdaTestHelpers.*; 39 import static org.testng.Assert.assertEquals; 40 41 /** 42 * @test 43 * @bug 8021863 44 */ 45 public class ConcatOpTest extends OpTestCase { 46 47 // Sanity to make sure all type of stream source works 48 @Test(dataProvider = "StreamTestData<Integer>", dataProviderClass = StreamTestDataProvider.class) testOps(String name, TestData.OfRef<Integer> data)49 public void testOps(String name, TestData.OfRef<Integer> data) { 50 exerciseOpsInt(data, 51 s -> Stream.concat(s, data.stream()), 52 s -> IntStream.concat(s, data.stream().mapToInt(Integer::intValue)), 53 s -> LongStream.concat(s, data.stream().mapToLong(Integer::longValue)), 54 s -> DoubleStream.concat(s, data.stream().mapToDouble(Integer::doubleValue))); 55 } 56 testSize()57 public void testSize() { 58 assertSized(Stream.concat( 59 LongStream.range(0, Long.MAX_VALUE / 2).boxed(), 60 LongStream.range(0, Long.MAX_VALUE / 2).boxed())); 61 62 assertUnsized(Stream.concat( 63 LongStream.range(0, Long.MAX_VALUE).boxed(), 64 LongStream.range(0, Long.MAX_VALUE).boxed())); 65 66 assertUnsized(Stream.concat( 67 LongStream.range(0, Long.MAX_VALUE).boxed(), 68 Stream.iterate(0, i -> i + 1))); 69 70 assertUnsized(Stream.concat( 71 Stream.iterate(0, i -> i + 1), 72 LongStream.range(0, Long.MAX_VALUE).boxed())); 73 } 74 testLongSize()75 public void testLongSize() { 76 assertSized(LongStream.concat( 77 LongStream.range(0, Long.MAX_VALUE / 2), 78 LongStream.range(0, Long.MAX_VALUE / 2))); 79 80 assertUnsized(LongStream.concat( 81 LongStream.range(0, Long.MAX_VALUE), 82 LongStream.range(0, Long.MAX_VALUE))); 83 84 assertUnsized(LongStream.concat( 85 LongStream.range(0, Long.MAX_VALUE), 86 LongStream.iterate(0, i -> i + 1))); 87 88 assertUnsized(LongStream.concat( 89 LongStream.iterate(0, i -> i + 1), 90 LongStream.range(0, Long.MAX_VALUE))); 91 } 92 testIntSize()93 public void testIntSize() { 94 assertSized(IntStream.concat( 95 IntStream.range(0, Integer.MAX_VALUE), 96 IntStream.range(0, Integer.MAX_VALUE))); 97 98 assertUnsized(IntStream.concat( 99 LongStream.range(0, Long.MAX_VALUE).mapToInt(i -> (int) i), 100 LongStream.range(0, Long.MAX_VALUE).mapToInt(i -> (int) i))); 101 102 assertUnsized(IntStream.concat( 103 LongStream.range(0, Long.MAX_VALUE).mapToInt(i -> (int) i), 104 IntStream.iterate(0, i -> i + 1))); 105 106 assertUnsized(IntStream.concat( 107 IntStream.iterate(0, i -> i + 1), 108 LongStream.range(0, Long.MAX_VALUE).mapToInt(i -> (int) i))); 109 } 110 testDoubleSize()111 public void testDoubleSize() { 112 assertSized(DoubleStream.concat( 113 IntStream.range(0, Integer.MAX_VALUE).mapToDouble(i -> i), 114 IntStream.range(0, Integer.MAX_VALUE).mapToDouble(i -> i))); 115 116 assertUnsized(DoubleStream.concat( 117 LongStream.range(0, Long.MAX_VALUE).mapToDouble(i -> i), 118 LongStream.range(0, Long.MAX_VALUE).mapToDouble(i -> i))); 119 120 assertUnsized(DoubleStream.concat( 121 LongStream.range(0, Long.MAX_VALUE).mapToDouble(i -> i), 122 DoubleStream.iterate(0, i -> i + 1))); 123 124 assertUnsized(DoubleStream.concat( 125 DoubleStream.iterate(0, i -> i + 1), 126 LongStream.range(0, Long.MAX_VALUE).mapToDouble(i -> i))); 127 } 128 assertUnsized(BaseStream<?, ?> s)129 void assertUnsized(BaseStream<?, ?> s) { 130 Spliterator<?> sp = s.spliterator(); 131 132 assertFalse(sp.hasCharacteristics(Spliterator.SIZED | Spliterator.SUBSIZED)); 133 assertEquals(sp.estimateSize(), Long.MAX_VALUE); 134 } 135 assertSized(BaseStream<?, ?> s)136 void assertSized(BaseStream<?, ?> s) { 137 Spliterator<?> sp = s.spliterator(); 138 139 assertTrue(sp.hasCharacteristics(Spliterator.SIZED | Spliterator.SUBSIZED)); 140 assertTrue(sp.estimateSize() < Long.MAX_VALUE); 141 } 142 } 143