Jest has detected the following 2 open handles potentially keeping Jest from exiting

[jose920405]

🐛 Report

Hi, I have a warning related to the following message.

Test Suites: 1 passed, 1 total
Tests:       4 passed, 4 total
Snapshots:   0 total
Time:        2.633s
Ran all test suites.

Jest has detected the following 2 open handles potentially keeping Jest from exiting:

  ●  Timeout

      at withGlobal (node_modules/lolex/src/lolex-src.js:30:33)
      at Object.<anonymous> (node_modules/lolex/src/lolex-src.js:892:29)


  ●  Timeout

      at withGlobal (node_modules/nise/node_modules/lolex/src/lolex-src.js:30:33)
      at Object.<anonymous> (node_modules/nise/node_modules/lolex/src/lolex-src.js:858:29)

✨  Done in 3.52s.

It started to happen when I integrated sinon into my project, I'm not sure if the problem is Jest or Sinon.

script:

"test": "jest --verbose --detectOpenHandles --forceExit",

Is related to this thread #6639 in which you can not find a solution.

Currently i'm using "jest": "23.5.0",.

Environment:
  OS: macOS High Sierra 10.13.1
  Node: 8.9.1
  Yarn: 1.3.2
  npm: 5.5.1
  Watchman: 4.7.0
  Xcode: Xcode 9.2 Build version 9C40b
  Android Studio: 3.1 AI-173.4819257

Packages: (wanted => installed)
  react: 16.0.0 => 16.0.0
  react-native: 0.51.0 => 0.51.0

[rickhanlonii]

Hey @jose920405, thanks for checking. Open handles are caused by userland code - we have tests that check that we don't leave any open. Happy to reopen if you can prove it's us though 👍

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