code: def test_cached_renderer():
      # Make sure that figures have an associated renderer after
      # a fig.canvas.draw() call
      fig = plt.figure(1)
      fig.canvas.draw()
      assert fig.canvas.get_renderer()._renderer is not None
  
      fig = plt.figure(2)
      fig.draw_without_rendering()
      assert fig.canvas.get_renderer()._renderer is not None
  
imports: import os
  import pytest
  import matplotlib
  import matplotlib.pyplot
label_desc: Use image node_id 1 for calling a global function with example usage: test_cached_renderer() without return types