def test_plot_gdp_ratio(base_tpi, base_params, reform_tpi,
                        reform_params, vertical_line_years, plot_title,
                        plot_type):
    fig = output_plots.plot_gdp_ratio(
        base_tpi, base_params, reform_tpi=reform_tpi,
        reform_params=reform_params, plot_type=plot_type,
        vertical_line_years=vertical_line_years, plot_title=plot_title)
    assert fig