code: def test_show_hist_mplargs():
      """
      This test only verifies that code up to the point of plotting with
      matplotlib works correctly.  Tests do not exercise matplotlib.
      """
      with rasterio.open("tests/data/RGB.byte.tif") as src:
          try:
              show_hist(
                  src,
                  bins=50,
                  lw=0.0,
                  stacked=False,
                  alpha=0.3,
                  histtype="stepfilled",
                  title="World Histogram overlaid",
                  range=[0, 255],
              )
              fig = plt.gcf()
              plt.close(fig)
          except ImportError:
              pass
  
imports: import pytest
  import matplotlib
  import numpy
  import rasterio
  from rasterio.plot import show, show_hist, get_plt, plotting_extent, adjust_band
  from rasterio.enums import ColorInterp
label_desc: Use image node_id 14 for calling a global function with example usage: test_show_hist_mplargs() without return types