code: def test_function(dshape_, contains):
      base = dshape("(int32, int64) -> int64")
      assert_dshape_equal(base, base)
  
      with pytest.raises(AssertionError) as e:
          assert_dshape_equal(dshape(dshape_), base)
      for c in contains:
          assert c in str(e.value)
  
file_path: datashader/datashader/datashape/util/tests/test_testing.py
imports: import pytest
  from datashader.datashape.coretypes import DateTime, R, String, Time, TimeDelta, Tuple, Option, int32, float32
  from datashader.datashape.util import dshape
  from datashader.datashape.util.testing import assert_dshape_equal
label_desc: Use image node_id 10 for calling a global function with example usage: test_function(dshape_, contains) without return types