def METHOD_NAME(self):
    fn1 = next(filename_gen)
    fn2 = next(filename_gen)
    data = pd.DataFrame({"x": range(4), "y": range(4), "b": list("aabb")})
    p = (
        ggplot(data)
        + geom_point(aes("x", "y"))
        + facet_wrap("b")
        + theme_xkcd()
    )
    p.save(fn1, verbose=False)
    assert_exist_and_clean(fn1, "Saving with theme_xkcd and dpi (1)")
    p.save(fn2, dpi=72, verbose=False)
    assert_exist_and_clean(fn2, "Saving with theme_xkcd and dpi (2)")