code: def test_empty(fig_test, fig_ref):
      mpl.rcParams["text.usetex"] = True
      fig_test.text(0.5, 0.5, "% a comment")
  
imports: from tempfile import TemporaryFile
  import numpy
  from packaging.version import parse
  import pytest
  import matplotlib
  from matplotlib import dviread
  from matplotlib.testing import _has_tex_package
  from matplotlib.testing.decorators import check_figures_equal, image_comparison
  from matplotlib.testing._markers import needs_usetex
  import matplotlib.pyplot
label_desc: Use image node_id 2 for calling a global function with example usage: test_empty(fig_test, fig_ref) without return types