code: def test_markerfacecolor_fillstyle():
      """Test that markerfacecolor does not override fillstyle='none'."""
      (l,) = plt.plot(
          [1, 3, 2],
          marker=MarkerStyle("o", fillstyle="none"),
          markerfacecolor="red",
      )
      assert l.get_fillstyle() == "none"
      assert l.get_markerfacecolor() == "none"
  
imports: import itertools
  import platform
  import timeit
  from types import SimpleNamespace
  from cycler import cycler
  import numpy
  from numpy.testing import assert_array_equal
  import pytest
  import matplotlib
  import matplotlib
  from matplotlib import _path
  import matplotlib.lines
  from matplotlib.markers import MarkerStyle
  from matplotlib.path import Path
  import matplotlib.pyplot
  import matplotlib.transforms
  from matplotlib.testing.decorators import image_comparison, check_figures_equal
label_desc: Use image node_id 16 for calling a global function with example usage: test_markerfacecolor_fillstyle() without return types