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27 | ****************************************************************************/ |
28 | #include <QtTest/QtTest> |
29 | |
30 | class tst_QRand: public QObject |
31 | { |
32 | Q_OBJECT |
33 | private slots: |
34 | void testqrand(); |
35 | }; |
36 | |
37 | void 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 | |
73 | QTEST_MAIN(tst_QRand) |
74 | #include "tst_qrand.moc" |
75 |