jestjs/jest

[Bug]: workerThreads break --watch-all when function does not meet expected.

Open

#14,423 创建于 2023年8月17日

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 (4 评论) (0 反应) (0 负责人)TypeScript (45,361 star) (6,653 fork)batch import
:bug: BugHelp WantedPinned

描述

Version

29.6.2

Steps to reproduce

  1. Clone my repo at: https://github.com/roffelund/jest-function-expect-bug
  2. yarn
  3. yarn test test.test.js --watch-all

Expected behavior

Screenshot 2023-08-17 at 10 36 09

I expected the test to show that the expected and received do not match.

Actual behavior

Screenshot 2023-08-17 at 10 35 19

Test stops running with exception

Additional context

This only happens when running with workers. Turning off workers expected behaviour works fine.

Environment

System:
    OS: macOS 13.4
    CPU: (10) arm64 Apple M1 Pro
  Binaries:
    Node: 18.17.0 - /opt/homebrew/opt/node@18/bin/node
    Yarn: 1.22.19 - /opt/homebrew/bin/yarn
    npm: 9.6.7 - /opt/homebrew/opt/node@18/bin/npm
  npmPackages:
    jest: 29.6.2 => 29.6.2

贡献者指南

技术栈
nodejstypescriptjest
领域
testing
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。
3
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。
1-3 hours
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。
fresh
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
Understanding of Jest worker threadsBasic knowledge of Node.js debugging
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。
60
研究方向
Investigate the interaction between workerThreads and watch all flag. Look into Jest's worker thread implementation in packages/jest worker. The bug occurs when a function expectation fails, causing an unhandled exception in the worker. Check how worker messages are handled during watch mode. Also review linked repo for reproduction.