'A remembering setter shouldn\'t kick in until the doc is saved.'

def _test_remembering_setter_unsaved(self, field):

    old_field = ('old_' + field)
    d = DocumentFactory.build()
    setattr(d, field, 'Foo')
    assert (not hasattr(d, old_field)), ("Doc    shouldn't    have    %s    until    it's    saved." % old_field)
