code: def test_custom_ellipsoid__radius():
      ce = CustomEllipsoid(radius=6378137)
      assert ce.name == "undefined"
      assert ce.semi_major_metre == 6378137
      assert ce.semi_minor_metre == 6378137
      assert ce.inverse_flattening == 0
      assert sorted(ce.to_json_dict()) == [
          "$schema",
          "name",
          "radius",
          "type",
      ]
  
file_path: pyproj/test/crs/test_crs_datum.py
imports: from numpy.testing import assert_almost_equal
  from pyproj.crs.datum import CustomDatum, CustomEllipsoid, CustomPrimeMeridian, Ellipsoid, PrimeMeridian
label_desc: Use image node_id 5 for calling a global function with example usage: test_custom_ellipsoid__radius() without return types