code: def test_scalar(self, scalar):
      df = GeoDataFrame()
      with pytest.warns(
          FutureWarning,
          match="You are adding a column named 'geometry'",
      ):
          df["geometry"] = scalar
      df.crs = 4326
      assert df.crs == self.wgs
      assert df.geometry.crs == self.wgs
      assert df.geometry.values.crs == self.wgs
  
imports: import random
  import warnings
  import numpy
  import pandas
  import pyproj
  import pytest
  from shapely.geometry import Point, Polygon, LineString
  from geopandas import GeoSeries, GeoDataFrame, points_from_xy, read_file
  from geopandas.array import from_shapely, from_wkb, from_wkt, GeometryArray
  from geopandas.testing import assert_geodataframe_equal
label_desc: Use image node_id 8 for calling the TestGeometryArrayCRS obj's underlying member method code with example usage: obj.test_scalar(scalar) without return types