def METHOD_NAME(self):
    # set full screen and exit full screen
    self.app.set_full_screen(self.app.main_window)
    self.assertTrue(self.app.is_full_screen)
    self.app.exit_full_screen()
    self.assertFalse(self.app.is_full_screen)
    # set full screen and set full with no args
    self.app.set_full_screen(self.app.main_window)
    self.assertTrue(self.app.is_full_screen)
    self.app.set_full_screen()
    self.assertFalse(self.app.is_full_screen)