'Test setting initial values in error stanza.'

def testSetup(self):

    msg = self.Message()
    msg.enable('error')
    self.check(msg, '\n                                        <message    type="error">\n                                                <error    type="cancel"    code="501">\n                                                        <feature-not-implemented    xmlns="urn:ietf:params:xml:ns:xmpp-stanzas"    />\n                                                </error>\n                                        </message>\n                                ')
