code: def test_marker_as_markerstyle():
      fig, ax = plt.subplots()
      (line,) = ax.plot([2, 4, 3], marker=MarkerStyle("D"))
      fig.canvas.draw()
      assert line.get_marker() == "D"
  
      # continue with smoke tests:
      line.set_marker("s")
      fig.canvas.draw()
      line.set_marker(MarkerStyle("o"))
      fig.canvas.draw()
      # test Path roundtrip
      triangle1 = Path._create_closed([[-1, -1], [1, -1], [0, 2]])
      (line2,) = ax.plot(
          [1, 3, 2], marker=MarkerStyle(triangle1), ms=22
      )
      (line3,) = ax.plot([0, 2, 1], marker=triangle1, ms=22)
  
      assert_array_equal(
          line2.get_marker().vertices, triangle1.vertices
      )
      assert_array_equal(
          line3.get_marker().vertices, triangle1.vertices
      )
  
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 22 for calling a global function with example usage: test_marker_as_markerstyle() without return types