def test_isparseable():

       assert Source("hello").isparseable()

       assert Source("if 1:\n  pass").isparseable()

->     assert Source(" \nif 1:\n  pass").isparseable()

       assert not Source("if 1:\n").isparseable() 

       assert not Source(" \nif 1:\npass").isparseable()

   def isparseable(self, deindent=True):

       """ return True if source is parseable, heuristically

               deindenting it by default. 

           """

       import parser

       if deindent:

->         source = str(self.deindent())

       else:

           source = str(self)

       try:

           parser.suite(source+'\n')

       except (parser.ParserError, SyntaxError):

           return False

       else:

           return True