code: def test_astype(s, df):
      # check geoseries functionality
      with pytest.raises(TypeError):
          s.astype(int)
  
      assert s.astype(str)[0] == "POINT (0 0)"
  
      res = s.astype(object)
      if not (
          (Version(pd.__version__) == Version("2.1.0"))
          or (Version(pd.__version__) == Version("2.1.1"))
      ):
          # https://github.com/geopandas/geopandas/issues/2948 - bug in pandas 2.1.0
          assert isinstance(res, pd.Series) and not isinstance(
              res, GeoSeries
          )
          assert res.dtype == object
  
      df = df.rename_geometry("geom_list")
  
      # check whether returned object is a geodataframe
      res = df.astype({"value1": float})
      assert isinstance(res, GeoDataFrame)
  
      # check whether returned object is a dataframe
      res = df.astype(str)
      assert isinstance(res, pd.DataFrame) and not isinstance(
          res, GeoDataFrame
      )
  
      res = df.astype({"geom_list": str})
      assert isinstance(res, pd.DataFrame) and not isinstance(
          res, GeoDataFrame
      )
  
      res = df.astype(object)
      assert isinstance(res, pd.DataFrame) and not isinstance(
          res, GeoDataFrame
      )
      assert res["geom_list"].dtype == object
  
imports: import os
  from packaging.version import Version
  import warnings
  import numpy
  from numpy.testing import assert_array_equal
  import pandas
  import shapely
  from shapely.geometry import Point, GeometryCollection, LineString, LinearRing
  import geopandas
  from geopandas import GeoDataFrame, GeoSeries
  import geopandas._compat
  from geopandas.array import from_shapely
  from geopandas.testing import assert_geodataframe_equal, assert_geoseries_equal
  from pandas.testing import assert_frame_equal, assert_series_equal
  import pytest
label_desc: Use image node_id 14 for calling a global function with example usage: test_astype(s, df) without return types