code: def test_sort_index_dataframe(gpdf):
      gpdf.index = np.random.permutation(len(gpdf))
      cugpdf = cuspatial.from_geopandas(gpdf)
      expected = gpdf.sort_index()
      got = cugpdf.sort_index().to_pandas()
      gpd.testing.assert_geodataframe_equal(got, expected)
  
imports: import geopandas
  import numpy
  import pandas
  import cuspatial
label_desc: Use image node_id 2 for calling a global function with example usage: test_sort_index_dataframe(gpdf) without return types