1/*
2 * Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 * This code is free software; you can redistribute it and/or modify it
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7 * published by the Free Software Foundation.
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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 *
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22 */
23package java.util.stream;
24
25import org.testng.annotations.DataProvider;
26
27import java.util.*;
28import java.util.Spliterators;
29import java.util.function.Supplier;
30
31/** TestNG DataProvider for long-valued streams */
32public class LongStreamTestDataProvider {
33    private static final long[] to0 = new long[0];
34    private static final long[] to1 = new long[1];
35    private static final long[] to10 = new long[10];
36    private static final long[] to100 = new long[100];
37    private static final long[] to1000 = new long[1000];
38    private static final long[] reversed = new long[100];
39    private static final long[] ones = new long[100];
40    private static final long[] twice = new long[200];
41    private static final long[] pseudoRandom;
42
43    private static final Object[][] testData;
44    private static final Object[][] testSmallData;
45    private static final Object[][] spliteratorTestData;
46
47    static {
48        long[][] arrays = {to0, to1, to10, to100, to1000};
49        for (long[] arr : arrays) {
50            for (int i = 0; i < arr.length; i++) {
51                arr[i] = i;
52            }
53        }
54        for (int i = 0; i < reversed.length; i++) {
55            reversed[i] = reversed.length - i;
56        }
57        for (int i = 0; i < ones.length; i++) {
58            ones[i] = 1;
59        }
60        System.arraycopy(to100, 0, twice, 0, to100.length);
61        System.arraycopy(to100, 0, twice, to100.length, to100.length);
62        pseudoRandom = new long[LambdaTestHelpers.LONG_STRING.length()];
63        for (int i = 0; i < LambdaTestHelpers.LONG_STRING.length(); i++) {
64            pseudoRandom[i] = (long) LambdaTestHelpers.LONG_STRING.charAt(i);
65        }
66    }
67
68    static final Object[][] arrays = {
69            {"empty", to0},
70            {"0..1", to1},
71            {"0..10", to10},
72            {"0..100", to100},
73            {"0..1000", to1000},
74            {"100x[1]", ones},
75            {"2x[0..100]", twice},
76            {"reverse 0..100", reversed},
77            {"pseudorandom", pseudoRandom}
78    };
79
80    static {
81        {
82            List<Object[]> listSmall = new ArrayList<>();
83            List<Object[]> list1000 = new ArrayList<>();
84            List<Object[]> list = null;
85            for (Object[] data : arrays) {
86                final Object name = data[0];
87                final long[] longs = (long[]) data[1];
88
89                list = longs.length >= 1000 ? list1000 : listSmall;
90
91                list.add(new Object[]{"array:" + name,
92                        TestData.Factory.ofArray("array:" + name, longs)});
93
94                SpinedBuffer.OfLong isl = new SpinedBuffer.OfLong();
95                for (long i : longs) {
96                    isl.accept(i);
97                }
98                list.add(new Object[]{"SpinedList:" + name,
99                        TestData.Factory.ofSpinedBuffer("SpinedList:" + name, isl)});
100
101                list.add(streamDataDescr("LongStream.longRange(0,l): " + longs.length,
102                                         () -> LongStream.range(0, longs.length)));
103                list.add(streamDataDescr("LongStream.longRangeClosed(0,l): " + longs.length,
104                                         () -> LongStream.rangeClosed(0, longs.length)));
105            }
106            testSmallData = listSmall.toArray(new Object[0][]);
107            list1000.addAll(listSmall);
108            testData = list1000.toArray(new Object[0][]);
109        }
110
111        {
112            List<Object[]> spliterators = new ArrayList<>();
113            for (Object[] data : arrays) {
114                final Object name = data[0];
115                final long[] longs = (long[]) data[1];
116
117                SpinedBuffer.OfLong isl = new SpinedBuffer.OfLong();
118                for (long i : longs) {
119                    isl.accept(i);
120                }
121
122                spliterators.add(splitDescr("Arrays.s(array):" + name,
123                                            () -> Arrays.spliterator(longs)));
124                spliterators.add(splitDescr("Arrays.s(array,o,l):" + name,
125                                            () -> Arrays.spliterator(longs, 0, longs.length / 2)));
126
127                spliterators.add(splitDescr("SpinedBuffer.s():" + name,
128                                            () -> isl.spliterator()));
129
130                spliterators.add(splitDescr("Primitives.s(SpinedBuffer.iterator(), size):" + name,
131                                            () -> Spliterators.spliterator(isl.iterator(), longs.length, 0)));
132                spliterators.add(splitDescr("Primitives.s(SpinedBuffer.iterator()):" + name,
133                                            () -> Spliterators.spliteratorUnknownSize(isl.iterator(), 0)));
134
135                spliterators.add(splitDescr("LongStream.longRange(0,l):" + name,
136                                            () -> LongStream.range(0, longs.length).spliterator()));
137                spliterators.add(splitDescr("LongStream.longRangeClosed(0,l):" + name,
138                                            () -> LongStream.rangeClosed(0, longs.length).spliterator()));
139                spliterators.add(splitDescr("LongStream.iterate(0,x->x<l;x->x+1):" + name,
140                                            () -> LongStream.iterate(0L, x -> x < longs.length, x -> x + 1L)
141                                                            .spliterator()));
142                // Need more!
143            }
144            spliteratorTestData = spliterators.toArray(new Object[0][]);
145        }
146
147    }
148
149    static <T> Object[] streamDataDescr(String description, Supplier<LongStream> s) {
150        return new Object[] { description, TestData.Factory.ofLongSupplier(description, s) };
151    }
152
153    static <T> Object[] splitDescr(String description, Supplier<Spliterator.OfLong> s) {
154        return new Object[] { description, s };
155    }
156
157    // Return an array of ( String name, LongStreamTestData )
158    @DataProvider(name = "LongStreamTestData")
159    public static Object[][] makeLongStreamTestData() {
160        return testData;
161    }
162
163    @DataProvider(name = "LongStreamTestData.small")
164    public static Object[][] makeSmallLongStreamTestData() {
165        return testSmallData;
166    }
167
168    // returns an array of (String name, Supplier<PrimitiveSpliterator<Long>>)
169    @DataProvider(name = "LongSpliterator")
170    public static Object[][] spliteratorProvider() {
171        return spliteratorTestData;
172    }
173}
174