code: def test_text_marker(fig_ref, fig_test):
      ax_ref = fig_ref.add_subplot()
      ax_test = fig_test.add_subplot()
  
      ax_ref.plot(0, 0, marker=r"o", markersize=100, markeredgewidth=0)
      ax_test.plot(
          0, 0, marker=r"$\bullet$", markersize=100, markeredgewidth=0
      )
  
imports: import numpy
  import matplotlib.pyplot
  from matplotlib import markers
  from matplotlib.path import Path
  from matplotlib.testing.decorators import check_figures_equal
  from matplotlib.transforms import Affine2D
  import pytest
label_desc: Use image node_id 7 for calling a global function with example usage: test_text_marker(fig_ref, fig_test) without return types