old_contents: 
  # This file is part of MLDB. Copyright 2016 Datacratic. All rights reserved.
  
  mldb = mldb_wrapper.wrap(mldb) # noqa
  
  import unittest
  
  class myTest(unittest.TestCase):
  
      def test_sequence(self):
          with self.assertRaisesRegexp(mldb_wrapper.ResponseException, "Executing builtin function exp: Can't convert value 'a' of type 'ASCII_STRING' to double") as re:
              query = "SELECT exp('a')"
              mldb.query(query)
          with self.assertRaisesRegexp(mldb_wrapper.ResponseException, "Executing builtin function ln: ln function supports positive numbers only") as re:
              query = "SELECT ln(-1)"
              mldb.query(query)
          with self.assertRaisesRegexp(mldb_wrapper.ResponseException, "Binding builtin function sqrt: expected 1 argument, got 3") as re:
              query = "SELECT sqrt(1,2,3)"
              mldb.query(query)
  
  mldb.run_tests()
  
new_contents: 
  # This file is part of MLDB. Copyright 2016 Datacratic. All rights reserved.
  
  mldb = mldb_wrapper.wrap(mldb) # noqa
  
  import unittest
  
  class myTest(unittest.TestCase):
  
      def test_sequence(self):
          with self.assertRaisesRegexp(mldb_wrapper.ResponseException, "Executing builtin function exp: Can't convert value 'a' of type 'ASCII_STRING' to double") as re:
              query = "SELECT exp('a')"
              mldb.query(query)
          with self.assertRaisesRegexp(mldb_wrapper.ResponseException, "Executing builtin function ln: the argument of the ln function must be strictly positive") as re:
              query = "SELECT ln(-1)"
              mldb.query(query)
          with self.assertRaisesRegexp(mldb_wrapper.ResponseException, "Binding builtin function sqrt: expected 1 argument, got 3") as re:
              query = "SELECT sqrt(1,2,3)"
              mldb.query(query)
  
  mldb.run_tests()
  
subject: fix a test to match last commit