code: def test_1band(rgb_image):
      """Test to ensure the input image has 3 bands to support rgb plotting.
      If fewer than 3 bands are provided, fail gracefully."""
      a_rgb_image, _ = rgb_image
  
      with pytest.raises(
          ValueError, match="Input needs to be 3 dimensions"
      ):
          plot_rgb(a_rgb_image[1])
      plt.close()
  
imports: import numpy
  import numpy.ma
  import matplotlib.pyplot
  import pytest
  import rasterio
  from rasterio.plot import plotting_extent
  from earthpy.plot import plot_rgb, _stretch_im
  from earthpy.io import path_to_example
label_desc: Use image node_id 5 for calling a global function with example usage: test_1band(rgb_image) without return types