code: def test_zero_headlength():
      # Based on report by Doug McNeil:
      # https://discourse.matplotlib.org/t/quiver-warnings/16722
      fig, ax = plt.subplots()
      X, Y = np.meshgrid(np.arange(10), np.arange(10))
      U, V = np.cos(X), np.sin(Y)
      ax.quiver(U, V, headlength=0, headaxislength=0)
      fig.canvas.draw()
  
imports: import platform
  import sys
  import numpy
  import pytest
  from matplotlib import pyplot
  from matplotlib.testing.decorators import image_comparison
label_desc: Use image node_id 7 for calling a global function with example usage: test_zero_headlength() without return types