def METHOD_NAME(self, widget, mocker):
    ''' Test help display'''
    mocker.patch.object(webbrowser, 'open')
    # Invoke the action on default tab
    widget.onHelp()
    # Check if show() got called
    assert webbrowser.open.called
    # Assure the filename is correct
    assert "optimizer.html" in webbrowser.open.call_args[0][0]
    # Change the combo index
    widget.cbAlgorithm.setCurrentIndex(2)
    widget.onHelp()
    # Check if show() got called
    assert webbrowser.open.call_count == 2
    # Assure the filename is correct
    assert "fit-dream" in webbrowser.open.call_args[0][0]
    # Change the index again
    widget.cbAlgorithm.setCurrentIndex(5)
    widget.onHelp()
    # Check if show() got called
    assert webbrowser.open.call_count == 3
    # Assure the filename is correct
    assert "fit-lm" in webbrowser.open.call_args[0][0]