code: def test_hist_axes(image_array_2bands):
      f, ax = ep.hist(
          image_array_2bands, xlabel="xlabel", ylabel="ylabel"
      )
      for i in range(2):
          assert ax[i].get_xlabel() == "xlabel"
          assert ax[i].get_ylabel() == "ylabel"
  
imports: import numpy
  import pytest
  import matplotlib.pyplot
  import earthpy.plot
label_desc: Use image node_id 15 for calling a global function with example usage: test_hist_axes(image_array_2bands) without return types