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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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13  * accompanied this code).
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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.OptionalDouble;
34 import java.util.OptionalInt;
35 import java.util.OptionalLong;
36 
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 static org.openjdk.testlib.java.util.stream.LambdaTestHelpers.countTo;
46 
47 /**
48  * MinMaxTest
49  *
50  * @author Brian Goetz
51  */
52 @Test
53 public class MinMaxTest extends OpTestCase {
testMinMax()54     public void testMinMax() {
55         assertTrue(!countTo(0).stream().min(Integer::compare).isPresent());
56         assertTrue(!countTo(0).stream().max(Integer::compare).isPresent());
57         assertEquals(1, (int) countTo(1000).stream().min(Integer::compare).get());
58         assertEquals(1000, (int) countTo(1000).stream().max(Integer::compare).get());
59     }
60 
61     @Test(dataProvider = "StreamTestData<Integer>", dataProviderClass = StreamTestDataProvider.class)
testOps(String name, TestData.OfRef<Integer> data)62     public void testOps(String name, TestData.OfRef<Integer> data) {
63         exerciseTerminalOps(data, s -> s.min(Integer::compare));
64         exerciseTerminalOps(data, s -> s.max(Integer::compare));
65     }
66 
testIntMinMax()67     public void testIntMinMax() {
68         assertEquals(IntStream.empty().min(), OptionalInt.empty());
69         assertEquals(IntStream.empty().max(), OptionalInt.empty());
70         assertEquals(1, IntStream.range(1, 1001).min().getAsInt());
71         assertEquals(1000, IntStream.range(1, 1001).max().getAsInt());
72     }
73 
74     @Test(dataProvider = "IntStreamTestData", dataProviderClass = IntStreamTestDataProvider.class)
testIntOps(String name, TestData.OfInt data)75     public void testIntOps(String name, TestData.OfInt data) {
76         exerciseTerminalOps(data, s -> s.min());
77         exerciseTerminalOps(data, s -> s.max());
78     }
79 
testLongMinMax()80     public void testLongMinMax() {
81         assertEquals(LongStream.empty().min(), OptionalLong.empty());
82         assertEquals(LongStream.empty().max(), OptionalLong.empty());
83         assertEquals(1, LongStream.range(1, 1001).min().getAsLong());
84         assertEquals(1000, LongStream.range(1, 1001).max().getAsLong());
85     }
86 
87     @Test(dataProvider = "LongStreamTestData", dataProviderClass = LongStreamTestDataProvider.class)
testLongOps(String name, TestData.OfLong data)88     public void testLongOps(String name, TestData.OfLong data) {
89         exerciseTerminalOps(data, s -> s.min());
90         exerciseTerminalOps(data, s -> s.max());
91     }
92 
testDoubleMinMax()93     public void testDoubleMinMax() {
94         assertEquals(DoubleStream.empty().min(), OptionalDouble.empty());
95         assertEquals(DoubleStream.empty().max(), OptionalDouble.empty());
96         assertEquals(1.0, LongStream.range(1, 1001).asDoubleStream().min().getAsDouble());
97         assertEquals(1000.0, LongStream.range(1, 1001).asDoubleStream().max().getAsDouble());
98     }
99 
100     @Test(dataProvider = "DoubleStreamTestData", dataProviderClass = DoubleStreamTestDataProvider.class)
testDoubleOps(String name, TestData.OfDouble data)101     public void testDoubleOps(String name, TestData.OfDouble data) {
102         exerciseTerminalOps(data, s -> s.min());
103         exerciseTerminalOps(data, s -> s.max());
104     }
105 }
106