code: def test_boolmask(gpdf, df_boolmask):
      geometries = gpdf
      gi = gpd.GeoDataFrame(geometries)
      cugpdf = cuspatial.from_geopandas(gi)
      cugpdf_back = cugpdf.to_geopandas()
      assert_eq_geo_df(gi[df_boolmask], cugpdf_back[df_boolmask])
  
imports: import geopandas
  import numpy
  import pandas
  import pytest
  from geopandas.testing import assert_geodataframe_equal
  from shapely.affinity import rotate
  from shapely.geometry import LineString, MultiLineString, MultiPoint, MultiPolygon, Point, Polygon
  import cudf
  import cuspatial
label_desc: Use image node_id 21 for calling a global function with example usage: test_boolmask(gpdf, df_boolmask) without return types