def test_path_before_last():
path = Path(['a1', 'a2', 'a3'])
assert 'a2' == path.before_last()
path = Path(['a1'])
with pytest.raises(IndexError):
path.before_last()
path = Path([])
with pytest.raises(IndexError):
path.before_last()
def _send_answer(self, budget: float, spent: float, rq_path: Path,
paths: PathsTable, visited: List[AgentName],
comp_def: ComputationDef, footprint: float,
replica_count: int, hosts: List[AgentName]):
assert rq_path.last() == self.agt_name
target_agt = rq_path.before_last()
cost_to_target = self.route(target_agt)
budget += cost_to_target
spent -= cost_to_target
self.logger.debug(
'sending replica answer from %s to %s for %s %s'
'( %s %s %s )', self.name, target_agt, rq_path, comp_def.name,
budget, spent, cost_to_target)
self.post_msg(
replication_computation_name(target_agt),
UCSReplicateMessage('replicate_answer', budget, spent, rq_path,
paths, visited, comp_def, footprint,
replica_count, hosts), MSG_REPLICATION)