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28#include <QtTest/QtTest>
29
30class tst_QRand: public QObject
31{
32 Q_OBJECT
33private slots:
34 void testqrand();
35};
36
37void tst_QRand::testqrand()
38{
39 const int numTestValues = 100;
40
41 int generatedNumbers[numTestValues];
42 bool generatesSameSequence = true;
43
44 // test without calling srand() first
45 // should give same sequence as with srand(1)
46
47 for (int i=0; i<numTestValues; ++i)
48 generatedNumbers[i] = qrand();
49
50 qsrand(seed: 1);
51 for (int i=0; i<numTestValues; ++i)
52 if (generatedNumbers[i] != qrand())
53 generatesSameSequence = false;
54
55 QVERIFY(generatesSameSequence);
56
57 for (unsigned int seed=1; seed < 10; seed+=100) {
58
59 qsrand(seed);
60 for (int i=0; i<numTestValues; ++i)
61 generatedNumbers[i] = qrand();
62
63 qsrand(seed);
64 generatesSameSequence = true;
65 for (int i=0; i<numTestValues; ++i)
66 if (generatedNumbers[i] != qrand())
67 generatesSameSequence = false;
68
69 QVERIFY(generatesSameSequence);
70 }
71}
72
73QTEST_MAIN(tst_QRand)
74#include "tst_qrand.moc"
75

source code of qtbase/tests/auto/corelib/global/qrand/tst_qrand.cpp