code: def test_spines_black_axes():
      # GitHub #18804
      plt.rcParams["savefig.pad_inches"] = 0
      plt.rcParams["savefig.bbox"] = "tight"
      fig = plt.figure(0, figsize=(4, 4))
      ax = fig.add_axes((0, 0, 1, 1))
      ax.set_xticklabels([])
      ax.set_yticklabels([])
      ax.set_xticks([])
      ax.set_yticks([])
      ax.set_facecolor((0, 0, 0))
  
file_path: matplotlib/lib/matplotlib/tests/test_spines.py
imports: import numpy
  import pytest
  import matplotlib.pyplot
  from matplotlib.spines import Spines
  from matplotlib.testing.decorators import check_figures_equal, image_comparison
label_desc: Use image node_id 7 for calling a global function with example usage: test_spines_black_axes() without return types