code: def test_label_outer_non_gridspec():
      ax = plt.axes((0, 0, 1, 1))
      ax.label_outer()  # Does nothing.
      check_ticklabel_visible([ax], [True], [True])
  
imports: import itertools
  import numpy
  import pytest
  from matplotlib.axes import Axes, SubplotBase
  import matplotlib.pyplot
  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_label_outer_non_gridspec() without return types