No such file or directory for coverage files

[C0ZEN]

Describe the bug

I have flaky failing tests due to unfound coverage files, but only on the CI (GitHub actions).
I previously created a bug ticket that was supposedly fixed, yet I'm still having the same issues.

⎯⎯⎯⎯⎯⎯ Unhandled Error ⎯⎯⎯⎯⎯⎯⎯
Error:  Error: ENOENT: no such file or directory, open '/home/runner/actions-runner/_work/x/.tmp/coverage-9.json'
Error:  ⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯⎯
Error:  Serialized Error: { errno: -2, code: 'ENOENT', syscall: 'open', path: '/home/runner/actions-runner/_work/x/.tmp/coverage-9.json' }

Note that I use Nx to run the tests.

Reproduction

Complicated to reproduce.

System Info

System:
    OS: macOS 14.5
    CPU: (8) arm64 Apple M1 Pro
    Memory: 97.91 MB / 32.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 20.12.2 - ~/.asdf/installs/nodejs/20.12.2/bin/node
    npm: 10.5.0 - ~/.asdf/plugins/nodejs/shims/npm
    pnpm: 8.15.6 - /opt/homebrew/bin/pnpm
  Browsers:
    Brave Browser: 124.1.65.126
    Chrome: 125.0.6422.176
    Safari: 17.5
  npmPackages:
    @vitejs/plugin-react: 4.3.1 => 4.3.1 
    @vitest/coverage-v8: 1.6.0 => 1.6.0 
    @vitest/ui: 1.6.0 => 1.6.0 
    vite: 5.3.1 => 5.3.1 
    vitest: 1.6.0 => 1.6.0

Used Package Manager

npm

Validations

• Follow our Code of Conduct
• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Check that this is a concrete bug. For Q&A open a GitHub Discussion or join our Discord Chat Server.
• The provided reproduction is a minimal reproducible example of the bug.

[C0ZEN]

FYI @AriPerkkio, please let me know if there is something that I can do/test to help.

[AriPerkkio]

We'll need a setup that can reproduce this issue.

[github-actions]

Hello @C0ZEN. Please provide a minimal reproduction using a GitHub repository or StackBlitz (you can also use examples). Issues marked with needs reproduction will be closed if they have no activity within 3 days.

[AriPerkkio]

Note that I use Nx to run the tests.

Is it possible that Nx is running multiple vitest commands at the same time? Having more than one parallel Vitest runs could conflict in a way that other test run cleans up the coverage reports from previous run. You would need to make sure coverage.reportsDirectory is unique between the parallel test runs.