code: def test_norm_scale_false(image_array_2bands):
      """Test that the norm param returns a plot with the correct norm
      boundaries."""
      norm_bounds = colors.BoundaryNorm([0, 1], 2)
      norm_ax = ep.plot_bands(
          image_array_2bands, cols=2, norm=norm_bounds
      )
      for axes in norm_ax:
          assert (
              norm_bounds.boundaries[0]
              == axes.get_images()[0].norm.vmin
          )
          assert (
              norm_bounds.boundaries[1]
              == axes.get_images()[0].norm.vmax
          )
  
imports: import pytest
  import matplotlib.pyplot
  import matplotlib.colors
  import earthpy.plot
  import numpy
label_desc: Use image node_id 18 for calling a global function with example usage: test_norm_scale_false(image_array_2bands) without return types