1 /* 2 * Copyright (c) 2012, 2016, 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.stream.LambdaTestHelpers; 26 import java.util.stream.OpTestCase; 27 import java.util.stream.StreamTestDataProvider; 28 import org.testng.annotations.Test; 29 30 import java.util.Iterator; 31 import java.util.Comparator; 32 import java.util.concurrent.atomic.AtomicInteger; 33 import java.util.function.Function; 34 import java.util.function.Supplier; 35 import java.util.function.UnaryOperator; 36 import java.util.Spliterator; 37 import java.util.stream.Stream; 38 import java.util.stream.TestData; 39 40 import static org.testng.Assert.assertEquals; 41 import static org.testng.Assert.assertTrue; 42 43 /** 44 * SequentialOpTest 45 * 46 * @author Brian Goetz 47 */ 48 public class SequentialOpTest extends OpTestCase { 49 @SuppressWarnings({"rawtypes", "unchecked"}) 50 @Test(dataProvider = "StreamTestData<Integer>", dataProviderClass = StreamTestDataProvider.class, 51 groups = { "serialization-hostile" }) testLazy(String name, TestData.OfRef<Integer> data)52 public void testLazy(String name, TestData.OfRef<Integer> data) { 53 Function<Integer, Integer> id = LambdaTestHelpers.identity(); 54 AtomicInteger counter = new AtomicInteger(); 55 Supplier<Stream<Integer>>[] suppliers = new Supplier[] { () -> data.stream(), () -> data.parallelStream() }; 56 UnaryOperator<Stream<Integer>>[] configs 57 = new UnaryOperator[] { 58 (UnaryOperator<Stream<Integer>>) s -> s.peek(e -> { counter.incrementAndGet(); }), 59 (UnaryOperator<Stream<Integer>>) s -> s.map(id).peek(e -> { counter.incrementAndGet(); }).sequential().map(id), 60 (UnaryOperator<Stream<Integer>>) s -> s.map(id).peek(e -> { counter.incrementAndGet(); }).parallel().map(id), 61 (UnaryOperator<Stream<Integer>>) s -> s.sequential().map(id).peek(e -> { 62 counter.incrementAndGet(); 63 }).map(id), 64 (UnaryOperator<Stream<Integer>>) s -> s.parallel().map(id).peek(e -> { counter.incrementAndGet(); }).map(id) 65 }; 66 67 for (int i = 0; i < suppliers.length; i++) { 68 setContext("supplierIndex", i); 69 Supplier<Stream<Integer>> supp = suppliers[i]; 70 for (int j = 0; j < configs.length; j++) { 71 setContext("configIndex", j); 72 UnaryOperator<Stream<Integer>> config = configs[j]; 73 counter.set(0); 74 Stream<Integer> stream = config.apply(supp.get()); 75 assertEquals(0, counter.get()); 76 77 Iterator<Integer> iterator = stream.iterator(); 78 assertEquals(0, counter.get()); 79 80 if (iterator.hasNext()) 81 iterator.next(); 82 assertTrue(data.size() == 0 || counter.get() > 0); 83 84 counter.set(0); 85 stream = config.apply(supp.get()); 86 Spliterator<Integer> spliterator = stream.spliterator(); 87 assertEquals(0, counter.get()); 88 89 spliterator.forEachRemaining(e -> { 90 }); 91 assertTrue(data.size() == 0 || counter.get() > 0); 92 } 93 } 94 } 95 96 @SuppressWarnings({"rawtypes", "unchecked"}) 97 @Test(dataProvider = "StreamTestData<Integer>.mini", dataProviderClass = StreamTestDataProvider.class) testMixedSeqPar(String name, TestData.OfRef<Integer> data)98 public void testMixedSeqPar(String name, TestData.OfRef<Integer> data) { 99 Function<Integer, Integer> id = LambdaTestHelpers.identity(); 100 UnaryOperator<Stream<Integer>>[] changers 101 = new UnaryOperator[] { 102 (UnaryOperator<Stream<Integer>>) s -> s, 103 (UnaryOperator<Stream<Integer>>) s -> s.sequential(), 104 (UnaryOperator<Stream<Integer>>) s -> s.parallel(), 105 (UnaryOperator<Stream<Integer>>) s -> s.unordered() 106 }; 107 UnaryOperator<Stream<Integer>>[] stuff 108 = new UnaryOperator[] { 109 (UnaryOperator<Stream<Integer>>) s -> s, 110 (UnaryOperator<Stream<Integer>>) s -> s.map(id), 111 (UnaryOperator<Stream<Integer>>) s -> s.sorted(Comparator.naturalOrder()), 112 (UnaryOperator<Stream<Integer>>) s -> s.map(id).sorted(Comparator.naturalOrder()).map(id), 113 (UnaryOperator<Stream<Integer>>) s -> s.filter(LambdaTestHelpers.pEven).sorted(Comparator.naturalOrder()).map(id), 114 }; 115 116 for (int c1Index = 0; c1Index < changers.length; c1Index++) { 117 setContext("c1Index", c1Index); 118 UnaryOperator<Stream<Integer>> c1 = changers[c1Index]; 119 for (int s1Index = 0; s1Index < stuff.length; s1Index++) { 120 setContext("s1Index", s1Index); 121 UnaryOperator<Stream<Integer>> s1 = stuff[s1Index]; 122 for (int c2Index = 0; c2Index < changers.length; c2Index++) { 123 setContext("c2Index", c2Index); 124 UnaryOperator<Stream<Integer>> c2 = changers[c2Index]; 125 for (int s2Index = 0; s2Index < stuff.length; s2Index++) { 126 setContext("s2Index", s2Index); 127 UnaryOperator<Stream<Integer>> s2 = stuff[s2Index]; 128 UnaryOperator<Stream<Integer>> composed = s -> s2.apply(c2.apply(s1.apply(c1.apply(s)))); 129 exerciseOps(data, composed); 130 } 131 } 132 } 133 } 134 } 135 } 136