code: def test_filename_plot_path(self):
      fn = next(filename_gen)
      p.save(fn, path=".", verbose=False)
      assert_exist_and_clean(fn, "fn, plot and path")
  
imports: import warnings
  from pathlib import Path
  import matplotlib.pyplot
  import pandas
  import pytest
  from plotnine import aes, facet_wrap, geom_point, geom_text, ggplot, ggsave, theme_xkcd
  from plotnine.data import mtcars
  from plotnine.exceptions import PlotnineError, PlotnineWarning
label_desc: Use image node_id 3 for calling the TestArguments obj's underlying member method code with example usage: obj.test_filename_plot_path() without return types