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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25 package java.util.stream;
26
27 import org.testng.annotations.DataProvider;
28
29 import java.util.*;
30 import java.util.Spliterators;
31 import java.util.function.Supplier;
32
33 /** TestNG DataProvider for double-valued streams */
34 public class DoubleStreamTestDataProvider {
35 private static final double[] to0 = new double[0];
36 private static final double[] to1 = new double[1];
37 private static final double[] to10 = new double[10];
38 private static final double[] to100 = new double[100];
39 private static final double[] to1000 = new double[1000];
40 private static final double[] reversed = new double[100];
41 private static final double[] ones = new double[100];
42 private static final double[] twice = new double[200];
43 private static final double[] pseudoRandom;
44
45 private static final Object[][] testData;
46 private static final Object[][] spliteratorTestData;
47
48 static {
49 double[][] arrays = {to0, to1, to10, to100, to1000};
50 for (double[] arr : arrays) {
51 for (int i = 0; i < arr.length; i++) {
52 arr[i] = i;
53 }
54 }
55 for (int i = 0; i < reversed.length; i++) {
56 reversed[i] = reversed.length - i;
57 }
58 for (int i = 0; i < ones.length; i++) {
59 ones[i] = 1;
60 }
61 System.arraycopy(to100, 0, twice, 0, to100.length);
62 System.arraycopy(to100, 0, twice, to100.length, to100.length);
63 pseudoRandom = new double[LambdaTestHelpers.LONG_STRING.length()];
64 for (int i = 0; i < LambdaTestHelpers.LONG_STRING.length(); i++) {
65 pseudoRandom[i] = (double) LambdaTestHelpers.LONG_STRING.charAt(i);
66 }
67 }
68
69 static final Object[][] arrays = {
70 {"empty", to0},
71 {"0..1", to1},
72 {"0..10", to10},
73 {"0..100", to100},
74 {"0..1000", to1000},
75 {"100x[1]", ones},
76 {"2x[0..100]", twice},
77 {"reverse 0..100", reversed},
78 {"pseudorandom", pseudoRandom}
79 };
80
81 static {
82 {
83 List<Object[]> list = new ArrayList<>();
84 for (Object[] data : arrays) {
85 final Object name = data[0];
86 final double[] doubles = (double[]) data[1];
87
88 list.add(new Object[]{"array:" + name,
89 TestData.Factory.ofArray("array:" + name, doubles)});
90
91 SpinedBuffer.OfDouble isl = new SpinedBuffer.OfDouble();
92 for (double i : doubles) {
93 isl.accept(i);
94 }
95 list.add(new Object[]{"SpinedList:" + name,
96 TestData.Factory.ofSpinedBuffer("SpinedList:" + name, isl)});
97
98 list.add(streamDataDescr("Primitives.range(0,l): " + doubles.length,
99 () -> DoubleStream.range(0, doubles.length)));
100 list.add(streamDataDescr("Primitives.range(0,l,2): " + doubles.length,
101 () -> DoubleStream.range(0, doubles.length, 2)));
102 list.add(streamDataDescr("Primitives.range(0,l,3): " + doubles.length,
103 () -> DoubleStream.range(0, doubles.length, 3)));
104 list.add(streamDataDescr("Primitives.range(0,l,7): " + doubles.length,
105 () -> DoubleStream.range(0, doubles.length, 7)));
106 }
107 testData = list.toArray(new Object[0][]);
108 }
109
110 {
111 List<Object[]> spliterators = new ArrayList<>();
112 for (Object[] data : arrays) {
113 final Object name = data[0];
114 final double[] doubles = (double[]) data[1];
115
116 SpinedBuffer.OfDouble isl = new SpinedBuffer.OfDouble();
117 for (double i : doubles) {
118 isl.accept(i);
119 }
120
121 spliterators.add(splitDescr("Arrays.s(array):" + name,
122 () -> Arrays.spliterator(doubles)));
123 spliterators.add(splitDescr("Arrays.s(array,o,l):" + name,
124 () -> Arrays.spliterator(doubles, 0, doubles.length / 2)));
125
126 spliterators.add(splitDescr("SpinedBuffer.s():" + name,
127 () -> isl.spliterator()));
128
129 spliterators.add(splitDescr("Primitives.s(SpinedBuffer.iterator(), size):" + name,
130 () -> Spliterators.spliterator(isl.iterator(), doubles.length, 0)));
131 spliterators.add(splitDescr("Primitives.s(SpinedBuffer.iterator()):" + name,
132 () -> Spliterators.spliteratorUnknownSize(isl.iterator(), 0)));
133
134 spliterators.add(splitDescr("Primitives.range(0,l):" + name,
135 () -> DoubleStream.range(0, doubles.length).spliterator()));
136 spliterators.add(splitDescr("Primitives.range(0,l,2):" + name,
137 () -> DoubleStream.range(0, doubles.length, 2).spliterator()));
138 spliterators.add(splitDescr("Primitives.range(0,l,3):" + name,
139 () -> DoubleStream.range(0, doubles.length, 3).spliterator()));
140 spliterators.add(splitDescr("Primitives.range(0,l,7):" + name,
141 () -> DoubleStream.range(0, doubles.length, 7).spliterator()));
142 // Need more!
143 }
144 spliteratorTestData = spliterators.toArray(new Object[0][]);
145 }
146
147 }
148
149 static <T> Object[] streamDataDescr(String description, Supplier<DoubleStream> s) {
150 return new Object[] { description, TestData.Factory.ofDoubleSupplier(description, s) };
151 }
152
153 static <T> Object[] splitDescr(String description, Supplier<Spliterator.OfDouble> s) {
154 return new Object[] { description, s };
155 }
156
157 // Return an array of ( String name, DoubleStreamTestData )
158 @DataProvider(name = "DoubleStreamTestData")
159 public static Object[][] makeDoubleStreamTestData() {
160 return testData;
161 }
162
163 // returns an array of (String name, Supplier<PrimitiveSpliterator<Double>>)
164 @DataProvider(name = "DoubleSpliterator")
165 public static Object[][] spliteratorProvider() {
166 return spliteratorTestData;
167 }
168 }