code: def test_fancyarrow_units():
      from datetime import datetime
  
      # Smoke test to check that FancyArrowPatch works with units
      dtime = datetime(2000, 1, 1)
      fig, ax = plt.subplots()
      arrow = FancyArrowPatch((0, dtime), (0.01, dtime))
  
imports: import numpy
  from numpy.testing import assert_almost_equal, assert_array_equal
  import pytest
  import matplotlib
  from matplotlib.patches import Annulus, Ellipse, Patch, Polygon, Rectangle, FancyArrowPatch, FancyArrow, BoxStyle, Arc
  from matplotlib.testing.decorators import image_comparison, check_figures_equal
  from matplotlib.transforms import Bbox
  import matplotlib.pyplot
  from matplotlib import collections, colors, patches, path, transforms, rcParams
  import sys
label_desc: Use image node_id 27 for calling a global function with example usage: test_fancyarrow_units() without return types