'\'HIDDEN-USER\' error should map to the L{ident.HiddenUser} exception.'

def test_hiddenUserError(self):

    d = defer.Deferred()
    self.client.queries.append((d, 567, 789))
    self.client.lineReceived('567,    789    :    ERROR    :    HIDDEN-USER')
    return self.assertFailure(d, ident.HiddenUser)
