def test_remove_file(self):

->     d = self.root.ensure('todeleted')

       assert d.check()

       d.remove()

       assert not d.check()

   def ensure(self, *args, **kwargs):

       """ ensure that an args-joined path exists (by default as

               a file). if you specify a keyword argument 'directory=True'

               then the path is forced  to be a directory path.

           """

       try:

           p = self.join(*args)

           if p.check():

               if p.check(versioned=False):

                   p.add()

               return p 

           if kwargs.get('dir', 0):

               return p._ensuredirs()

           parent = p.dirpath()

           parent._ensuredirs()

->         p.write("")

           p.add()

           return p

       except:

           error_enhance(sys.exc_info())