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 android.platform.test.annotations.LargeTest; 26 27 import org.openjdk.testlib.java.util.stream.DoubleStreamTestDataProvider; 28 import org.openjdk.testlib.java.util.stream.IntStreamTestDataProvider; 29 import org.openjdk.testlib.java.util.stream.LambdaTestHelpers; 30 import org.openjdk.testlib.java.util.stream.LongStreamTestDataProvider; 31 import org.openjdk.testlib.java.util.stream.OpTestCase; 32 import org.openjdk.testlib.java.util.stream.StreamTestDataProvider; 33 import org.openjdk.testlib.java.util.stream.TestData; 34 35 import java.util.stream.BaseStream; 36 import java.util.stream.Collectors; 37 import java.util.stream.Stream; 38 import java.util.stream.IntStream; 39 import java.util.stream.LongStream; 40 import java.util.stream.DoubleStream; 41 42 import org.testng.annotations.Test; 43 44 import java.util.Arrays; 45 import java.util.List; 46 import java.util.function.Function; 47 48 @LargeTest 49 @Test 50 public class StreamLinkTest extends OpTestCase { 51 apply(int n, Function<S, S> f)52 private <S> Function<S, S> apply(int n, Function<S, S> f) { 53 return s -> { 54 for (int i = 0; i < n; i++) { 55 s = f.apply(s); 56 } 57 return s; 58 }; 59 } 60 61 private List<Integer> sizes = Arrays.asList(0, 1, 2, 3, 4, 5, 255, 1000); 62 63 @Test(dataProvider = "StreamTestData<Integer>", dataProviderClass = StreamTestDataProvider.class) 64 public void testManyStreams(String name, TestData.OfRef<Integer> data) { 65 for (int n : sizes) { 66 setContext("n", n); 67 List<Integer> expected = data.stream().map(e -> (Integer) (e + n)).collect(Collectors.toList()); 68 69 withData(data). 70 stream(apply(n, (Stream<Integer> s) -> s.map(e -> (Integer) (e + 1)))). 71 expectedResult(expected). 72 exercise(); 73 } 74 } 75 76 @Test(dataProvider = "IntStreamTestData", dataProviderClass = IntStreamTestDataProvider.class) testIntManyStreams(String name, TestData.OfInt data)77 public void testIntManyStreams(String name, TestData.OfInt data) { 78 for (int n : sizes) { 79 setContext("n", n); 80 int[] expected = data.stream().map(e -> e + n).toArray(); 81 82 withData(data). 83 stream(apply(n, (IntStream s) -> s.map(e -> e + 1))). 84 expectedResult(expected). 85 exercise(); 86 } 87 } 88 89 @Test(dataProvider = "LongStreamTestData", dataProviderClass = LongStreamTestDataProvider.class) testLongManyStreams(String name, TestData.OfLong data)90 public void testLongManyStreams(String name, TestData.OfLong data) { 91 for (int n : sizes) { 92 setContext("n", n); 93 long[] expected = data.stream().map(e -> e + n).toArray(); 94 95 withData(data). 96 stream(apply(n, (LongStream s) -> s.map(e -> e + 1L))). 97 expectedResult(expected). 98 exercise(); 99 } 100 } 101 102 @Test(dataProvider = "DoubleStreamTestData", dataProviderClass = DoubleStreamTestDataProvider.class) testDoubleManyStreams(String name, TestData.OfDouble data)103 public void testDoubleManyStreams(String name, TestData.OfDouble data) { 104 for (int n : sizes) { 105 setContext("n", n); 106 double[] expected = data.stream().map(e -> accumulate(e, n)).toArray(); 107 108 withData(data). 109 stream(apply(n, (DoubleStream s) -> s.map(e -> e + 1.0))). 110 expectedResult(expected). 111 exercise(); 112 } 113 } accumulate(double e, int n)114 private double accumulate(double e, int n) { 115 while (n-- > 0) { 116 e = e + 1.0; 117 } 118 return e; 119 } 120 } 121