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 */
23package org.openjdk.tests.java.util.stream;
24
25import org.openjdk.testlib.java.util.stream.DoubleStreamTestDataProvider;
26import org.openjdk.testlib.java.util.stream.IntStreamTestDataProvider;
27import org.openjdk.testlib.java.util.stream.LambdaTestHelpers;
28import org.openjdk.testlib.java.util.stream.LongStreamTestDataProvider;
29import org.openjdk.testlib.java.util.stream.OpTestCase;
30import org.openjdk.testlib.java.util.stream.StreamTestDataProvider;
31import org.openjdk.testlib.java.util.stream.TestData;
32
33import java.util.function.Consumer;
34import java.util.function.DoubleConsumer;
35import java.util.function.IntConsumer;
36import java.util.function.LongConsumer;
37import java.util.stream.BaseStream;
38import java.util.stream.Stream;
39import java.util.stream.IntStream;
40import java.util.stream.LongStream;
41import java.util.stream.DoubleStream;
42
43import org.testng.annotations.Test;
44
45import java.util.ArrayList;
46import java.util.Collections;
47import java.util.List;
48
49import static org.openjdk.testlib.java.util.stream.LambdaTestHelpers.*;
50
51/**
52 * TeeOpTest
53 */
54@Test(groups = { "serialization-hostile" })
55public class TeeOpTest extends OpTestCase {
56
57    public void testTee() {
58        List<Integer> copy = new ArrayList<>();
59
60        assertCountSum(countTo(0).stream().peek(copy::add), 0, 0);
61        assertCountSum(copy.iterator(), 0, 0);
62
63        copy.clear();
64        assertCountSum(countTo(10).stream().peek(copy::add), 10, 55);
65        assertCountSum(copy.iterator(), 10, 55);
66
67        copy.clear();
68        assertCountSum(countTo(10).stream().map(mDoubler).peek(copy::add), 10, 110);
69        assertCountSum(copy.iterator(), 10, 110);
70    }
71
72    static class AbstractRecordingConsumer<T> {
73        List<T> list;
74
75        void before(TestData<T, ?> td) {
76            // Tee block can be called concurrently
77            list = Collections.synchronizedList(new ArrayList<>());
78        }
79
80        void after(TestData<T, ?> td) {
81            // No guarantees in parallel tests that calls to tee block will
82            // be in the encounter order, if defined, of the data
83            // @@@ Consider passing more meta-data about evaluation
84            assertContentsUnordered(list, td.into(new ArrayList<T>()));
85        }
86    }
87
88    @Test(dataProvider = "StreamTestData<Integer>", dataProviderClass = StreamTestDataProvider.class)
89    public void testOps(String name, final TestData.OfRef<Integer> data) {
90        class RecordingConsumer extends AbstractRecordingConsumer<Integer> implements Consumer<Integer> {
91            public void accept(Integer t) {
92                list.add(t);
93            }
94        }
95        final RecordingConsumer b = new RecordingConsumer();
96
97        withData(data)
98                .stream(s -> s.peek(b))
99                .before(b::before)
100                .after(b::after)
101                .exercise();
102    }
103
104    @Test(dataProvider = "IntStreamTestData", dataProviderClass = IntStreamTestDataProvider.class)
105    public void testIntOps(String name, final TestData.OfInt data) {
106        class RecordingConsumer extends AbstractRecordingConsumer<Integer> implements IntConsumer {
107            public void accept(int t) {
108                list.add(t);
109            }
110        }
111        final RecordingConsumer b = new RecordingConsumer();
112
113        withData(data)
114                .stream(s -> s.peek(b))
115                .before(b::before)
116                .after(b::after)
117                .exercise();
118    }
119
120    @Test(dataProvider = "LongStreamTestData", dataProviderClass = LongStreamTestDataProvider.class)
121    public void testLongOps(String name, final TestData.OfLong data) {
122        class RecordingConsumer extends AbstractRecordingConsumer<Long> implements LongConsumer {
123            public void accept(long t) {
124                list.add(t);
125            }
126        }
127        final RecordingConsumer b = new RecordingConsumer();
128
129        withData(data)
130                .stream(s -> s.peek(b))
131                .before(b::before)
132                .after(b::after)
133                .exercise();
134    }
135
136    @Test(dataProvider = "DoubleStreamTestData", dataProviderClass = DoubleStreamTestDataProvider.class)
137    public void testDoubleOps(String name, final TestData.OfDouble data) {
138        class RecordingConsumer extends AbstractRecordingConsumer<Double> implements DoubleConsumer {
139            public void accept(double t) {
140                list.add(t);
141            }
142        }
143        final RecordingConsumer b = new RecordingConsumer();
144
145        withData(data)
146                .stream(s -> s.peek(b))
147                .before(b::before)
148                .after(b::after)
149                .exercise();
150    }
151}
152