jestjs/jest

[Bug]: watch mode fails when git maintenance runs

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#13,869 opened on 2023年2月7日

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:bug: BugHelp WantedPinnedWindows

説明

Version

29.4.0

Steps to reproduce

  1. Run your tests with jest --watch and wait until they finish.
  2. In another terminal, run git maintenance run.
  3. The watcher will fail

Expected behavior

Outside process shouldn't kill the watcher.

Actual behavior

Watcher dies immediately with

Error: EPERM: operation not permitted, lstat 'C:\Workspace\my-project\.git\objects\dc\a-very-long-hash'
Emitted 'error' event on NodeWatcher instance at:
    at C:\Workspace\my-project\node_modules\jest-haste-map\build\watchers\NodeWatcher.js:274:14
    at FSReqCallback.oncomplete (node:fs:207:21) {
  errno: -4048,
  code: 'EPERM',
  syscall: 'lstat',
  path: 'C:\\Workspace\\my-project\\.git\\objects\\dc\\a-very-long-hash'
}

I have also seen it point to .git\objects\maintenance.lock.

Additional context

This other issue is where I found the suggestion that it was a background git maintenance command that was causing the conflict, and once I knew that it was easy to reproduce.

Environment

System:
    OS: Windows 10 10.0.22621
    CPU: (12) x64 Intel(R) Core(TM) i7-10750H CPU @ 2.60GHz
  Binaries:
    Node: 18.12.1 - ~\AppData\Local\fnm_multishells\30672_1675721836564\node.EXE
    npm: 8.19.2 - ~\AppData\Local\fnm_multishells\30672_1675721836564\npm.CMD
  npmPackages:
    jest: ^29.3.1 => 29.4.0

コントリビューターガイド

技術スタック
typescriptnodejs
領域
testing
Issue 種別
bug
難度新しい貢献者にとっての実装難度です。1 は非常に小さな変更、5 は専門的な作業です。
3
推定時間経験ある貢献者が調査、実装、テスト、pull request 準備にかけるおおよその時間範囲です。
half day
活動状況Issue が今どれだけ取り組みやすいかを示します。新しい、活発、古い、ブロック中、またはメンテナー入力待ちなどです。
active
明確さ期待される変更、受け入れ条件、次の手順がどれだけ明確かを示します。
clear
前提条件
Node.jsJest testing framework
初心者向け度初回貢献者にどれだけ取り組みやすいかを 1-100 で推定したスコアです。
65
調査方針
Start by examining the NodeWatcher.js file in the jest haste map package, particularly around line 274 where the EPERM error is emitted. The fix should handle lstat errors that occur when git maintenance runs, possibly by ignoring EPERM errors on .git objects. Review the issue comments for user suggestions, such as adding an ignore rule for the .git directory or filtering specific error codes.
[Bug]: watch mode fails when git maintenance runs · jestjs/jest#13869 | Good First Issue