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root/jsr166/jsr166/src/test/tck/SplittableRandomTest.java
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Comparing jsr166/src/test/tck/SplittableRandomTest.java (file contents):
Revision 1.20 by jsr166, Sun Nov 13 03:36:50 2016 UTC vs.
Revision 1.21 by jsr166, Thu Nov 17 22:09:52 2016 UTC

# Line 50 | Line 50 | public class SplittableRandomTest extend
50          Integer.getInteger("SplittableRandomTest.reps", 4);
51  
52      /**
53     * Repeated calls to next (only accessible via reflection) produce
54     * at least two distinct results, and repeated calls produce all
55     * possible values.
56     */
57    public void testNext() throws ReflectiveOperationException {
58        SplittableRandom rnd = new SplittableRandom();
59        try {
60            java.lang.reflect.Method m
61                = SplittableRandom.class.getDeclaredMethod(
62                    "next", new Class[] { int.class });
63            m.setAccessible(true);
64
65            int i;
66            {
67                int val = new java.util.Random().nextInt(4);
68                for (i = 0; i < NCALLS; i++) {
69                    int q = (int) m.invoke(rnd, new Object[] { 2 });
70                    if (val == q) break;
71                }
72                assertTrue(i < NCALLS);
73            }
74
75            {
76                int r = (int) m.invoke(rnd, new Object[] { 3 });
77                for (i = 0; i < NCALLS; i++) {
78                    int q = (int) m.invoke(rnd, new Object[] { 3 });
79                    assertTrue(q < (1<<3));
80                    if (r != q) break;
81                }
82                assertTrue(i < NCALLS);
83            }
84        } catch (SecurityException acceptable) {}
85    }
86
87    /**
53       * Repeated calls to nextInt produce at least two distinct results
54       */
55      public void testNextInt() {

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