Using QApplication with gTest in Linux

Question

I used QApplication objects in gTest in Visual Studio.

int argc = 0;
char **argv = 0;
QMainWindow *window;

TEST() {
    app = new QApplication(argc, argv);
    window = new QMainWindow();
// Test Execution 
// Data gathering
    app.exec();
    delete window;
    window = new QMainWindow();
    delete app;
    app = new QApplication(argc, argv);
// Test Execution 
// Data gathering
    app.exec();
}

And it works pretty well.

If i am using the same snippet with Linux and the windows generated on the second call of exec() is empty and I have to kill the execution.

What is missing to get that working with Linux.

Making two separate tests does not work either

Answer 1

Ronny Brendel had the right Question in the comment.

The solution is not to reinitialize the QApplication.

delete app;
app = new QApplication(argc, argv);

must be removed.