code: def test___eq__():
      c0 = CoordinateSystem("ijk", "my name", np.float32)
      c1 = CoordinateSystem("ijk", "my name", np.float32)
      assert c0 == c1
      c2 = CoordinateSystem("ijk", "another name", np.float32)
      assert c0 != c2
      c3 = CoordinateSystem("ijq", "my name", np.float32)
      assert c0 != c3
      c4 = CoordinateSystem("ijk", "my name", np.float64)
      assert c0 != c4
  
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 10 for calling a global function with example usage: test___eq__() without return types