code: def test_single_hist_title(basic_image):
      """Test that a single custom title works for one band hists."""
      custom_title = "Great hist"
      f, ax = ep.hist(basic_image, title=[custom_title])
      assert ax.get_title() == custom_title
      plt.close(f)
  
imports: import numpy
  import pytest
  import matplotlib.pyplot
  import earthpy.plot
label_desc: Use image node_id 3 for calling a global function with example usage: test_single_hist_title(basic_image) without return types