code: def test_quiver_xy():
      # simple arrow pointing from SW to NE
      fig, ax = plt.subplots(subplot_kw=dict(aspect="equal"))
      ax.quiver(0, 0, 1, 1, angles="xy", scale_units="xy", scale=1)
      ax.set_xlim(0, 1.1)
      ax.set_ylim(0, 1.1)
      ax.grid()
  
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 20 for calling a global function with example usage: test_quiver_xy() without return types