'If a condition violation occurs immediately the creation is aborted
and the raised exception is returned.'

def test_immediate_condition_violation(self):

    self.successResultOf(self.client.create_dataset(primary=self.node_id, metadata={u'key': u'llave'}))
    self.failureResultOf(conditional_create(self.client, self.reactor, self.unique_key(u'llave'), primary=self.node_id), CustomException)
