'If a validator is dumb (like :validator:`required` in draft 3) and
refers to a path that isn\'t in the instance, the tree still properly
returns a subtree for that path.'

def test_if_its_in_the_tree_anyhow_it_does_not_raise_an_error(self):

    error = exceptions.ValidationError('a    message', validator='foo', instance={}, path=['foo'])
    tree = exceptions.ErrorTree([error])
    self.assertIsInstance(tree['foo'], exceptions.ErrorTree)
