akka/akka-core

Unstashed messages enqueued in TestActorRef mailbox while processing a message from self are stuck until another message is received

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#30,170 创建于 2021年4月7日

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 (1 评论) (0 反应) (0 负责人)Scala (13,277 star) (3,547 fork)batch import
help wantednice-to-have (low-prio)t:testing

描述

In the following workflow, unstashed messages are enqueued in the mailbox but are not processed as expected:

  1. Send message (messageOne) from TestKit to TestActorRef
  2. TestActorRef underlying actor stashes messageOne and schedules a subsequent message to self (selfMessage)
  3. selfMessage is sent and processed and messageOne is unstashed during processing of selfMessage
  4. messageOne is not processed
  5. Send another message (messageTwo) from TestKit to TestActorRef
  6. Both messageOne and messageTwo are processed

akka.testkit.CallingThreadDispatcher#runQueue appears to process the provided MessageQueue at the time of invocation rather than using the active Mailbox MessageQueue.

贡献者指南

技术栈
scala
领域
backendtesting
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
4
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
3-5 days
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
stale
清晰度议题是否清楚说明期望改动、验收标准和下一步。
mostly clear
前置要求
Akka fundamentalsUnderstanding of actor mailboxKnowledge of CallingThreadDispatcher
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
20
研究方向
Investigate the implementation of CallingThreadDispatcher.runQueue method and its interaction with the Mailbox's MessageQueue. The issue suggests that runQueue processes the provided MessageQueue instead of the active one. Compare with the expected behavior and check if there are any related changes in the codebase. Consider looking at the stashing mechanism and how messages are unstashed during self message processing.