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Add some tests for various qmath.h functions 

Previously untested.

Task-number: QTBUG-88183
Change-Id: I9e94308471651e447f35a21329e43a363fb23961
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
bb10
Edward Welbourne 2020-11-16 13:18:12 +01:00
parent c0829d6131
commit 06c898d7a9
1 changed files with 68 additions and 0 deletions
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68
tests/auto/corelib/kernel/qmath/tst_qmath.cpp
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@ -39,6 +39,10 @@ private slots:
void degreesToRadians();
void radiansToDegrees_data();
void radiansToDegrees();
void trigonometry_data();
void trigonometry();
void funcs_data();
void funcs();
void qNextPowerOfTwo32S_data();
void qNextPowerOfTwo32S();
void qNextPowerOfTwo64S_data();
@ -131,6 +135,70 @@ void tst_QMath::radiansToDegrees()
QCOMPARE(qRadiansToDegrees(radiansDouble), degreesDouble);
}
void tst_QMath::trigonometry_data()
{
QTest::addColumn<double>("x");
QTest::addColumn<double>("y");
QTest::addColumn<double>("angle");
QTest::newRow("zero") << 1.0 << 0.0 << 0.0;
QTest::newRow("turn/4") << 0.0 << 1.0 << M_PI_2;
QTest::newRow("turn/2") << -1.0 << 0.0 << M_PI;
QTest::newRow("3*turn/4") << 0.0 << -1.0 << -M_PI_2;
}
void tst_QMath::trigonometry()
{
QFETCH(const double, x);
QFETCH(const double, y);
QFETCH(const double, angle);
const double hypot = std::hypot(x, y);
QVERIFY(hypot > 0);
QCOMPARE(qAtan2(y, x), angle);
QCOMPARE(qSin(angle), y / hypot);
if (x >= 0 && (y || x)) // aSin() always in right half-plane
QCOMPARE(qAsin(y / hypot), angle);
QCOMPARE(qCos(angle), x / hypot);
if (y >= 0 && (y || x)) // aCos() always in upper half-plane
QCOMPARE(qAcos(x / hypot), angle);
if (x > 0) {
QCOMPARE(qTan(angle), y / x);
QCOMPARE(qAtan(y / x), angle);
}
}
void tst_QMath::funcs_data()
{
QTest::addColumn<double>("value");
QTest::addColumn<int>("floor");
QTest::addColumn<int>("ceil");
QTest::addColumn<double>("abs");
QTest::addColumn<double>("sqrt");
QTest::addColumn<double>("log");
QTest::addColumn<double>("exp");
QTest::addColumn<double>("cube");
const double nan = qQNaN();
QTest::newRow("0") << 0.0 << 0 << 0 << 0.0 << 0.0 << nan << 1.0 << 0.0;
QTest::newRow("1.44")
<< 1.44 << 1 << 2 << 1.44 << 1.2 << 0.36464311358790924 << 4.220695816996552 << 2.985984;
QTest::newRow("-1.44")
<< -1.44 << -2 << -1 << 1.44 << nan << nan << 0.23692775868212176 << -2.985984;
}
void tst_QMath::funcs()
{
QFETCH(double, value);
QTEST(qFloor(value), "floor");
QTEST(qCeil(value), "ceil");
QTEST(qFabs(value), "abs");
if (value >= 0)
QTEST(qSqrt(value), "sqrt");
if (value > 0)
QTEST(qLn(value), "log");
QTEST(qExp(value), "exp");
QTEST(qPow(value, 3), "cube");
}
void tst_QMath::qNextPowerOfTwo32S_data()
{