code: def not_parseable(self, expected_error, s):
      e = self.should_fail(
          lambda: self.fragment(s), Errors.CompileError
      )
      self.assertEqual(expected_error, e.message_only)
  
imports: from Cython.TestUtils import CythonTest
  import Cython.Compiler.Errors
  from Cython.Compiler.Nodes import *
  from Cython.Compiler.ParseTreeTransforms import *
  from Cython.Compiler.Buffer import *
label_desc: Use image node_id 2 for calling the TestBufferParsing obj's underlying member method code with example usage: obj.not_parseable(expected_error, s) without return types