1 /* 2 * Copyright (c) 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 24 /* 25 * @test 26 * @summary flat-map operations 27 * @bug 8044047 8076458 28 */ 29 30 package org.openjdk.tests.java.util.stream; 31 32 import org.testng.annotations.Test; 33 34 import java.util.Collection; 35 import java.util.Collections; 36 import java.util.concurrent.atomic.AtomicInteger; 37 import java.util.stream.IntStream; 38 import java.util.stream.IntStreamTestDataProvider; 39 import java.util.stream.OpTestCase; 40 import java.util.stream.TestData; 41 42 import static java.util.stream.LambdaTestHelpers.*; 43 44 @Test 45 public class FlatMapIntOpTest extends OpTestCase { 46 47 @Test 48 public void testIntClose() { 49 AtomicInteger before = new AtomicInteger(); 50 AtomicInteger onClose = new AtomicInteger(); 51 52 IntStream.of(1, 2).peek(e -> before.getAndIncrement()). 53 flatMap(i -> IntStream.of(i, i).onClose(onClose::getAndIncrement)).count(); 54 assertEquals(before.get(), onClose.get()); 55 } 56 57 @Test(dataProvider = "IntStreamTestData", dataProviderClass = IntStreamTestDataProvider.class) 58 public void testIntOps(String name, TestData.OfInt data) { 59 Collection<Integer> result = exerciseOps(data, s -> s.flatMap(i -> Collections.singleton(i).stream().mapToInt(j -> j))); 60 assertEquals(data.size(), result.size()); 61 assertContents(data, result); 62 63 result = exerciseOps(data, s -> s.flatMap(i -> IntStream.empty())); 64 assertEquals(0, result.size()); 65 66 exerciseOps(data, s -> s.flatMap(e -> IntStream.range(0, e))); 67 exerciseOps(data, s -> s.flatMap(e -> IntStream.range(0, e).limit(10))); 68 } 69 }