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23 package org.openjdk.tests.java.util.stream;
24 
25 import org.openjdk.testlib.java.util.stream.DoubleStreamTestDataProvider;
26 import org.openjdk.testlib.java.util.stream.IntStreamTestDataProvider;
27 import org.openjdk.testlib.java.util.stream.LambdaTestHelpers;
28 import org.openjdk.testlib.java.util.stream.LongStreamTestDataProvider;
29 import org.openjdk.testlib.java.util.stream.OpTestCase;
30 import org.openjdk.testlib.java.util.stream.StreamTestDataProvider;
31 import org.openjdk.testlib.java.util.stream.TestData;
32 
33 import java.util.function.Consumer;
34 import java.util.function.DoubleConsumer;
35 import java.util.function.IntConsumer;
36 import java.util.function.LongConsumer;
37 import java.util.stream.BaseStream;
38 import java.util.stream.Stream;
39 import java.util.stream.IntStream;
40 import java.util.stream.LongStream;
41 import java.util.stream.DoubleStream;
42 
43 import org.testng.annotations.Test;
44 
45 import java.util.ArrayList;
46 import java.util.Collections;
47 import java.util.List;
48 
49 import static org.openjdk.testlib.java.util.stream.LambdaTestHelpers.*;
50 
51 /**
52  * TeeOpTest
53  */
54 @Test(groups = { "serialization-hostile" })
55 public class TeeOpTest extends OpTestCase {
56 
testTee()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 
before(TestData<T, ?> td)75         void before(TestData<T, ?> td) {
76             // Tee block can be called concurrently
77             list = Collections.synchronizedList(new ArrayList<>());
78         }
79 
after(TestData<T, ?> td)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)
testOps(String name, final TestData.OfRef<Integer> data)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)
testIntOps(String name, final TestData.OfInt data)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)
testLongOps(String name, final TestData.OfLong data)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)
testDoubleOps(String name, final TestData.OfDouble data)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