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23 package java.util.stream;
24 
25 import org.testng.annotations.DataProvider;
26 
27 import java.util.*;
28 import java.util.Spliterators;
29 import java.util.function.Supplier;
30 
31 /** TestNG DataProvider for int-valued streams */
32 public class IntStreamTestDataProvider {
33     private static final int[] to0 = new int[0];
34     private static final int[] to1 = new int[1];
35     private static final int[] to10 = new int[10];
36     private static final int[] to100 = new int[100];
37     private static final int[] to1000 = new int[1000];
38     private static final int[] reversed = new int[100];
39     private static final int[] ones = new int[100];
40     private static final int[] twice = new int[200];
41     private static final int[] pseudoRandom;
42 
43     private static final Object[][] testData;
44     private static final Object[][] spliteratorTestData;
45 
46     static {
47         int[][] arrays = {to0, to1, to10, to100, to1000};
48         for (int[] 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         }
System.arraycopy(to100, 0, twice, 0, to100.length)59         System.arraycopy(to100, 0, twice, 0, to100.length);
System.arraycopy(to100, 0, twice, to100.length, to100.length)60         System.arraycopy(to100, 0, twice, to100.length, to100.length);
61         pseudoRandom = new int[LambdaTestHelpers.LONG_STRING.length()];
62         for (int i = 0; i < LambdaTestHelpers.LONG_STRING.length(); i++) {
63             pseudoRandom[i] = (int) 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 int[] ints = (int[]) data[1];
85 
list.add(new Object[]{"array:" + name, TestData.Factory.ofArray("array:" + name, ints)})86                 list.add(new Object[]{"array:" +
87                                       name, TestData.Factory.ofArray("array:" + name, ints)});
88 
89                 SpinedBuffer.OfInt isl = new SpinedBuffer.OfInt();
90                 for (int i : ints) {
91                     isl.accept(i);
92                 }
list.add(new Object[]{"SpinedList:" + name, TestData.Factory.ofSpinedBuffer("SpinedList:" + name, isl)})93                 list.add(new Object[]{"SpinedList:" + name,
94                          TestData.Factory.ofSpinedBuffer("SpinedList:" + name, isl)});
95 
96                 list.add(streamDataDescr("IntStream.intRange(0,l): " + ints.length,
97                                          () -> IntStream.range(0, ints.length)));
98                 list.add(streamDataDescr("IntStream.rangeClosed(0,l): " + ints.length,
99                                          () -> IntStream.rangeClosed(0, ints.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 int[] ints = (int[]) data[1];
109 
110                 SpinedBuffer.OfInt isl = new SpinedBuffer.OfInt();
111                 for (int i : ints) {
112                     isl.accept(i);
113                 }
114 
115                 spliterators.add(splitDescr("Arrays.s(array):" + name,
116                                             () -> Arrays.spliterator(ints)));
117                 spliterators.add(splitDescr("Arrays.s(array,o,l):" + name,
118                                             () -> Arrays.spliterator(ints, 0, ints.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(), ints.length, 0)));
125                 spliterators.add(splitDescr("Primitives.s(SpinedBuffer.iterator()):" + name,
126                                             () -> Spliterators.spliteratorUnknownSize(isl.iterator(), 0)));
127 
128                 spliterators.add(splitDescr("IntStream.intRange(0,l):" + name,
129                                             () -> IntStream.range(0, ints.length).spliterator()));
130                 spliterators.add(splitDescr("IntStream.intRangeClosed(0,l):" + name,
131                                             () -> IntStream.rangeClosed(0, ints.length).spliterator()));
132                 // Need more!
133             }
134             spliteratorTestData = spliterators.toArray(new Object[0][]);
135         }
136 
137     }
138 
streamDataDescr(String description, Supplier<IntStream> s)139     static <T> Object[] streamDataDescr(String description, Supplier<IntStream> s) {
140         return new Object[] { description, TestData.Factory.ofIntSupplier(description, s) };
141     }
142 
splitDescr(String description, Supplier<Spliterator.OfInt> s)143     static <T> Object[] splitDescr(String description, Supplier<Spliterator.OfInt> s) {
144         return new Object[] { description, s };
145     }
146 
147     // Return an array of ( String name, IntStreamTestData )
148     @DataProvider(name = "IntStreamTestData")
makeIntStreamTestData()149     public static Object[][] makeIntStreamTestData() {
150         return testData;
151     }
152 
153     // returns an array of (String name, Supplier<PrimitiveSpliterator<Integer>>)
154     @DataProvider(name = "IntSpliterator")
spliteratorProvider()155     public static Object[][] spliteratorProvider() {
156         return spliteratorTestData;
157     }
158 }
159