1/*
2 * Copyright (c) 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 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[][] spliteratorTestData;
45
46    static {
47        long[][] arrays = {to0, to1, to10, to100, to1000};
48        for (long[] arr : arrays) {
49            for (int i = 0; i < arr.length; i++) {
50                arr[i] = i;
51            }
52        }
53        for (int i = 0; i < reversed.length; i++) {
54            reversed[i] = reversed.length - i;
55        }
56        for (int i = 0; i < ones.length; i++) {
57            ones[i] = 1;
58        }
59        System.arraycopy(to100, 0, twice, 0, to100.length);
60        System.arraycopy(to100, 0, twice, to100.length, to100.length);
61        pseudoRandom = new long[LambdaTestHelpers.LONG_STRING.length()];
62        for (int i = 0; i < LambdaTestHelpers.LONG_STRING.length(); i++) {
63            pseudoRandom[i] = (long) LambdaTestHelpers.LONG_STRING.charAt(i);
64        }
65    }
66
67    static final Object[][] arrays = {
68            {"empty", to0},
69            {"0..1", to1},
70            {"0..10", to10},
71            {"0..100", to100},
72            {"0..1000", to1000},
73            {"100x[1]", ones},
74            {"2x[0..100]", twice},
75            {"reverse 0..100", reversed},
76            {"pseudorandom", pseudoRandom}
77    };
78
79    static {
80        {
81            List<Object[]> list = new ArrayList<>();
82            for (Object[] data : arrays) {
83                final Object name = data[0];
84                final long[] longs = (long[]) data[1];
85
86                list.add(new Object[]{"array:" + name,
87                        TestData.Factory.ofArray("array:" + name, longs)});
88
89                SpinedBuffer.OfLong isl = new SpinedBuffer.OfLong();
90                for (long i : longs) {
91                    isl.accept(i);
92                }
93                list.add(new Object[]{"SpinedList:" + name,
94                        TestData.Factory.ofSpinedBuffer("SpinedList:" + name, isl)});
95
96                list.add(streamDataDescr("LongStream.longRange(0,l): " + longs.length,
97                                         () -> LongStream.range(0, longs.length)));
98                list.add(streamDataDescr("LongStream.longRangeClosed(0,l): " + longs.length,
99                                         () -> LongStream.rangeClosed(0, longs.length)));
100            }
101            testData = list.toArray(new Object[0][]);
102        }
103
104        {
105            List<Object[]> spliterators = new ArrayList<>();
106            for (Object[] data : arrays) {
107                final Object name = data[0];
108                final long[] longs = (long[]) data[1];
109
110                SpinedBuffer.OfLong isl = new SpinedBuffer.OfLong();
111                for (long i : longs) {
112                    isl.accept(i);
113                }
114
115                spliterators.add(splitDescr("Arrays.s(array):" + name,
116                                            () -> Arrays.spliterator(longs)));
117                spliterators.add(splitDescr("Arrays.s(array,o,l):" + name,
118                                            () -> Arrays.spliterator(longs, 0, longs.length / 2)));
119
120                spliterators.add(splitDescr("SpinedBuffer.s():" + name,
121                                            () -> isl.spliterator()));
122
123                spliterators.add(splitDescr("Primitives.s(SpinedBuffer.iterator(), size):" + name,
124                                            () -> Spliterators.spliterator(isl.iterator(), longs.length, 0)));
125                spliterators.add(splitDescr("Primitives.s(SpinedBuffer.iterator()):" + name,
126                                            () -> Spliterators.spliteratorUnknownSize(isl.iterator(), 0)));
127
128                spliterators.add(splitDescr("LongStream.longRange(0,l):" + name,
129                                            () -> LongStream.range(0, longs.length).spliterator()));
130                spliterators.add(splitDescr("LongStream.longRangeClosed(0,l):" + name,
131                                            () -> LongStream.rangeClosed(0, longs.length).spliterator()));
132                // Need more!
133            }
134            spliteratorTestData = spliterators.toArray(new Object[0][]);
135        }
136
137    }
138
139    static <T> Object[] streamDataDescr(String description, Supplier<LongStream> s) {
140        return new Object[] { description, TestData.Factory.ofLongSupplier(description, s) };
141    }
142
143    static <T> Object[] splitDescr(String description, Supplier<Spliterator.OfLong> s) {
144        return new Object[] { description, s };
145    }
146
147    // Return an array of ( String name, LongStreamTestData )
148    @DataProvider(name = "LongStreamTestData")
149    public static Object[][] makeLongStreamTestData() {
150        return testData;
151    }
152
153    // returns an array of (String name, Supplier<PrimitiveSpliterator<Long>>)
154    @DataProvider(name = "LongSpliterator")
155    public static Object[][] spliteratorProvider() {
156        return spliteratorTestData;
157    }
158}
159