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root/jsr166/jsr166/src/test/tck/ThreadLocalRandomTest.java

Comparing jsr166/src/test/tck/ThreadLocalRandomTest.java (file contents):
Revision 1.21 by jsr166, Sat Apr 25 04:55:31 2015 UTC vs.
Revision 1.23 by jsr166, Fri Dec 9 06:56:30 2016 UTC

#	Line 52 | Line 52 | public class ThreadLocalRandomTest exten
52		}
53
54		/**
55	+	* Repeated calls to next (only accessible via reflection) produce
56	+	* at least two distinct results, and repeated calls produce all
57	+	* possible values.
58	+	*/
59	+	public void testNext() throws ReflectiveOperationException {
60	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
61	+	final java.lang.reflect.Method m;
62	+	try {
63	+	m = ThreadLocalRandom.class.getDeclaredMethod(
64	+	"next", new Class[] { int.class });
65	+	m.setAccessible(true);
66	+	} catch (SecurityException
67	+	| java.lang.reflect.InaccessibleObjectException acceptable) {
68	+	// Either jdk9 module system or security manager might deny access.
69	+	return;
70	+	}
71	+
72	+	int i;
73	+	{
74	+	int val = new java.util.Random().nextInt(4);
75	+	for (i = 0; i < NCALLS; i++) {
76	+	int q = (int) m.invoke(rnd, new Object[] { 2 });
77	+	if (val == q) break;
78	+	}
79	+	assertTrue(i < NCALLS);
80	+	}
81	+
82	+	{
83	+	int r = (int) m.invoke(rnd, new Object[] { 3 });
84	+	for (i = 0; i < NCALLS; i++) {
85	+	int q = (int) m.invoke(rnd, new Object[] { 3 });
86	+	assertTrue(q < (1<<3));
87	+	if (r != q) break;
88	+	}
89	+	assertTrue(i < NCALLS);
90	+	}
91	+	}
92	+
93	+	/**
94		* Repeated calls to nextInt produce at least two distinct results
95		*/
96		public void testNextInt() {

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