'test of StringIds follow spec'

def testStringIdsMatcher(self):

    emptyStringIdXML = '<message    xmlns="jabber:client"><fields    xmlns="urn:xmpp:iot:sensordata"    /></message>'
    msg = self.Message()
    msg['fields']['stringIds'] = 'Nisse'
    self.check(msg, emptyStringIdXML)
    msg['fields']['stringIds'] = 'Nisse___nje#'
    self.check(msg, emptyStringIdXML)
    msg['fields']['stringIds'] = '1'
    self.check(msg, emptyStringIdXML)
