code: def test_geometry(self):
      assert type(self.df.geometry) is GeoSeries
      # still GeoSeries if different name
      df2 = GeoDataFrame(
          {
              "coords": [
                  Point(x, y) for x, y in zip(range(5), range(5))
              ],
              "nums": range(5),
          },
          geometry="coords",
      )
      assert type(df2.geometry) is GeoSeries
      assert type(df2["coords"]) is GeoSeries
  
imports: from pandas import DataFrame, Series
  from shapely.geometry import Point
  from geopandas import GeoDataFrame, GeoSeries
label_desc: Use image node_id 2 for calling the TestDataFrame obj's underlying member method code with example usage: obj.test_geometry() without return types