better qgui tester

qtestrunner.h

#ifndef TESTRUNNER_H
#define TESTRUNNER_H

#include <QTimer>

#include <QtTest>

/*
Taken from https://stackoverflow.com/questions/1524390/what-unit-testing-framework-should-i-use-for-qt BEWARE: there are some concerns doing so, see  https://bugreports.qt.io/browse/QTBUG-23067 */
class TestRunner : public QObject
{
Q_OBJECT

public:
TestRunner() : m_overallResult(0)
{
QDir dir;
if (!dir.exists(mTestLogFolder))
{
if (!dir.mkdir(mTestLogFolder))
qFatal("Cannot create folder %s", mTestLogFolder);
}
}

void addTest(QObject * test)
{
test->setParent(this);
m_tests.append(test);
}

bool runTests(int argc, char * argv[])
{
QApplication app(argc, argv);
QTimer::singleShot(0, this, SLOT(run()));
app.exec();

return m_overallResult == 0;
}

private slots:
void run()
{
doRunTests();
QApplication::instance()->quit();
}

private:
void doRunTests()
{
// BEWARE: we assume either no command line parameters or evaluate first parameter ourselves
// usage:
//    help:                                        "TestSuite.exe -help"
//    run all test classes (with logging):         "TestSuite.exe"
//    print all test classes:                      "TestSuite.exe -classes"
//    run one test class with QtTest parameters:   "TestSuite.exe testClass [options] [testfunctions[:testdata]]...
if (QApplication::arguments().size() > 1 && QApplication::arguments()[1] == "-help")
{
qDebug() << "Usage:";
qDebug().noquote() << "run all test classes (with logging):\t\t" << qAppName();
qDebug().noquote() << "print all test classes:\t\t\t\t" << qAppName() << "-classes";
qDebug().noquote() << "run one test class with QtTest parameters:\t" << qAppName() << "testClass [options][testfunctions[:testdata]]...";
qDebug().noquote() << "get more help for running one test class:\t" << qAppName() << "testClass -help";
exit(0);
}

foreach(QObject * test, m_tests)
{
QStringList arguments;
QString testName = test->metaObject()->className();

if (QApplication::arguments().size() > 1)
{
if (QApplication::arguments()[1] == "-classes")
{
// only print test classes
qDebug().noquote() << testName;
continue;
}
else
if (QApplication::arguments()[1] != testName)
{
continue;
}
else
{
arguments = QApplication::arguments();
arguments.removeAt(1);
}
}
else
{
arguments.append(QApplication::arguments()[0]);
// log to console
arguments.append("-o"); arguments.append("-,txt");
// log to file as TXT
arguments.append("-o"); arguments.append(mTestLogFolder % "/" % testName % ".log,txt");
// log to file as XML
arguments.append("-o"); arguments.append(mTestLogFolder % "/" % testName % ".xml,xunitxml");
}
m_overallResult |= QTest::qExec(test, arguments);
}
}

QList<QObject *> m_tests;
int m_overallResult;
const QString mTestLogFolder = "testLogs";
};

#endif // TESTRUNNER_H