def METHOD_NAME(self):
    """
    Test that scaling is working.
    """
    self._window.clear()
    x = [0,    1,   2, 3,  4,   5]
    y = [0.01, 0.1, 1, 10, 100, 1000]
    self._window.axes(0).plot(x, y, '-k')
    self._tabs[1].Scale.setCheckState(QtCore.Qt.Checked)
    self._tabs[1].Scale.clicked.emit(True)
    self.assertImage('testScale.png')