def test_check_for_leftover_reference_values_raises_exception_on_references_in_list_values(self):
     with self.assertRaises(TemplateErrorException):
         CloudFormationTemplateTransformer.check_for_leftover_reference_values(['a', '|Ref|foo', 'b'])
 def test_check_for_leftover_reference_values_properly_returns_empty_values(self):
     self.assertEqual('', CloudFormationTemplateTransformer.check_for_leftover_reference_values(''))
 def test_check_for_leftover_reference_values_raises_exception_on_existing_reference(self):
     with self.assertRaises(TemplateErrorException):
         CloudFormationTemplateTransformer.check_for_leftover_reference_values('|Ref|foo')