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unit-testingqtqdebug

Use qDebug in unit testing Qt

I wanted to use qDebug in the Qt unit testing, i had written the code of qDebug but it is not getting diplayed I even used

ctest -R alkimia-alkinvoice -VV

But even this shows only the location where the error is coming from. but i needed to use qDebug for more information about the error

Solution

  • To quote the documentation for qDebug()..

    Calls the message handler with the debug message msg. If no message handler has been installed, the message is printed to stderr. Under Windows, the message is sent to the console, if it is a console application; otherwise, it is sent to the debugger. This function does nothing if QT_NO_DEBUG_OUTPUT was defined during compilation.

    I'm going to assume you are running under Windows, sorry if that is incorrect. qDebug() output under Windows is converted into Win32 OutputDebugString() API calls. If you are running under a debugger/IDE that can hook into that API then you should see the debug outputs in one of that program's windows.

    If you add CONFIG+=console to your .pro file and rebuild/run your program from the console, you should see the debug output.