code: def test_CoordinateSystem(eg_cs):
      assert eg_cs.cs.name == eg_cs.name
      assert eg_cs.cs.coord_names == eg_cs.axes
      assert eg_cs.cs.coord_dtype == eg_cs.coord_dtype
  
imports: from types import SimpleNamespace
  import numpy
  import pytest
  from ..coordinate_system import CoordinateSystem, CoordinateSystemError, CoordSysMaker, CoordSysMakerError, is_coordsys, is_coordsys_maker, product, safe_dtype
label_desc: Use image node_id 2 for calling a global function with example usage: test_CoordinateSystem(eg_cs) without return types