code: def test_hatch():
      fig, ax = plt.subplots()
      ax.add_patch(plt.Rectangle((0, 0), 1, 1, fill=False, hatch="/"))
      ax.set_xlim((0.45, 0.55))
      ax.set_ylim((0.45, 0.55))
  
imports: import base64
  import io
  import numpy
  from numpy.testing import assert_array_almost_equal, assert_array_equal
  import pytest
  from matplotlib.testing.decorators import check_figures_equal, image_comparison, remove_ticks_and_titles
  import matplotlib.pyplot
  from matplotlib import patches, transforms
  from matplotlib.path import Path
label_desc: Use image node_id 12 for calling a global function with example usage: test_hatch() without return types