#include class TestQString: public QObject { Q_OBJECT private slots: void toUpper(); void toLower(); }; void TestQString::toUpper() { QString str = "Hello"; QCOMPARE(str.toUpper(), QString("HELLO")); } void TestQString::toLower() { QString str = "Hello"; QCOMPARE(str.toLower(), QString("hello")); } QTEST_MAIN(TestQString) #include "TestQString.moc"