Jest not running tests in src/node_modules

[modernserf]

Bug Report

What is the current behavior?
Jest reports "No tests found" even when there are tests

If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal repository on GitHub that we can npm install and npm test.
Example repo.

What is the expected behavior?
Tests in src/node_modules are run

Run Jest again with --debug and provide the full configuration it prints. Please mention your node and npm version and operating system.

jest version = 16.0.2
test framework = jasmine2
config = {
  "moduleFileExtensions": [
    "jsx",
    "js",
    "json"
  ],
  "moduleNameMapper": [
    [
      "^.+\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$",
      "/Users/justinfalcone/work/modernserf/test-jest/config/jest/FileStub.js"
    ],
    [
      "^.+\\.css$",
      "/Users/justinfalcone/work/modernserf/test-jest/config/jest/CSSStub.js"
    ]
  ],
  "setupFiles": [
    "/Users/justinfalcone/work/modernserf/test-jest/config/polyfills.js"
  ],
  "testPathIgnorePatterns": [
    "/Users/justinfalcone/work/modernserf/test-jest/(build|config|node_modules)/"
  ],
  "preprocessorIgnorePatterns": [
    "/Users/justinfalcone/work/modernserf/test-jest/node_modules"
  ],
  "testEnvironment": "/Users/justinfalcone/work/modernserf/test-jest/node_modules/jest-environment-jsdom/build/index.js",
  "rootDir": "/Users/justinfalcone/work/modernserf/test-jest",
  "name": "-Users-justinfalcone-work-modernserf-test-jest",
  "testRunner": "/Users/justinfalcone/work/modernserf/test-jest/node_modules/jest-jasmine2/build/index.js",
  "scriptPreprocessor": "/Users/justinfalcone/work/modernserf/test-jest/node_modules/babel-jest/build/index.js",
  "usesBabelJest": true,
  "automock": false,
  "bail": false,
  "browser": false,
  "cacheDirectory": "/var/folders/q8/zlh7b1ms7fg2r3cqx6sgbrrr0000gn/T/jest",
  "clearMocks": false,
  "coveragePathIgnorePatterns": [
    "/node_modules/"
  ],
  "coverageReporters": [
    "json",
    "text",
    "lcov",
    "clover"
  ],
  "globals": {},
  "haste": {
    "providesModuleNodeModules": []
  },
  "mocksPattern": "__mocks__",
  "moduleDirectories": [
    "node_modules"
  ],
  "modulePathIgnorePatterns": [],
  "noStackTrace": false,
  "notify": false,
  "preset": null,
  "resetModules": false,
  "testPathDirs": [
    "/Users/justinfalcone/work/modernserf/test-jest"
  ],
  "testRegex": "(/__tests__/.*|\\.(test|spec))\\.jsx?$",
  "testURL": "about:blank",
  "timers": "real",
  "useStderr": false,
  "verbose": null,
  "watch": false,
  "cache": true,
  "watchman": true,
  "testcheckOptions": {
    "times": 100,
    "maxSize": 200
  }
}
No tests found
  12 files checked.
  testPathDirs: /Users/justinfalcone/work/modernserf/test-jest - 12 matches
  testRegex: (/__tests__/.*|\.(test|spec))\.jsx?$ - 0 matches
  testPathIgnorePatterns: /Users/justinfalcone/work/modernserf/test-jest/(build|config|node_modules)/ - 5 matches

Node v6.5.0
npm v3.10.3

See facebook/create-react-app#1042 and facebook/create-react-app#607 for related issues.

[modernserf]

I think this is the offending section: https://github.com/facebook/jest/blob/cd4d97b30d73dbb2350dc77a409e39d8b8caca90/packages/jest-haste-map/src/index.js#L681-L692

[shanewilson]

Hey @modernserf
I ran into the same issue and adding the following to my Jest config helped:

  "haste": {
    "providesModuleNodeModules": [".*"]
  }

[cpojer]

Yes, Jest excludes node_modules by default. You can adjust testPathIgnorePatterns for your use case: http://facebook.github.io/jest/docs/configuration.html#testpathignorepatterns-array-string

[modernserf]

@cpojer did you look at the example repo? I'm using

  "testPathIgnorePatterns": [
    "<rootDir>/(build|config|node_modules)/"
  ]

and its still ignoring src/node_modules.

[modernserf]

I believe this is because haste ignores files in all node_modules directories, so files in src/node_modules don't even make it to where testPathIgnorePatterns is used

[cpojer]

Ahh, I'm sorry, yeah you are right! I didn't realize this before, but yes, what @shanewilson says should work for now. I believe to fix this without changing the "haste" config, you'd have to turn this switch to true: https://github.com/facebook/jest/blob/master/packages/jest-haste-map/src/index.js#L207 – if @shanewilson's workaround doesn't work, can you try turning this option to true and reporting back? If that works, we can probably expose it as well as part of the "haste" object – you could send a PR for that :)

I also encourage you to give lerna a try: https://github.com/lerna/lerna – it has worked really well for us!

Are you using Jest at Buzzfeed?

[modernserf]

Thanks! -- the haste config works for now, as does manually setting retainAllFiles, though when I was testing this earlier it seemed like that was generating a lot of warnings? I'll try this out again and report back.

Regarding BuzzFeed: Each team has a fair amount of control over their own stack, but many of the newer internal tools (including the ones I work on) are using React/Jest/Webpack/Babel; some of our prototypes are even built with create-react-app.

[cpojer]

Ok I see, yeah that makes sense. I encourage you to just go with @shanewilson's workaround then.

Also, cool that you are using Jest! :)

[cpojer]

Discussion continued here: facebook/create-react-app#1081 (comment)

[ericclemmons]

Related, you need to make sure that files in ./src/node_modules are processed:

I had the same issue, as I'm trying to use ./src/node_modules for internal libs.

Fix:

// .jestrc
 "transformIgnorePatterns": [
    "<rootDir>/(node_modules)/"
  ]

The default regex should have <rootDir> in it:

https://github.com/facebook/jest/blob/e6495647112781b98ff194fe34952a8139f045df/packages/jest-validate/src/__tests__/fixtures/jestConfig.js#L16

[kirkstrobeck]

Here is an example repo that demonstrates https://github.com/kirkstrobeck/jest-issue-5039