Jest 16: coverage empty with collectCoverageFrom

Hi,

I’ve just upgraded to jest 16, and since my test coverage are empty.

If I remove the collectCoverageFrom option from the config it seams to works 😳

Apart from that, loving the new features 😍Keep it up 🍻

  "collectCoverageFrom": [
    "<rootDir>/src/main/webapp/scripts/**/*.js"
  ],

----------|----------|----------|----------|----------|----------------|
File      |  % Stmts | % Branch |  % Funcs |  % Lines |Uncovered Lines |
----------|----------|----------|----------|----------|----------------|
All files |  Unknown |  Unknown |  Unknown |  Unknown |                |
----------|----------|----------|----------|----------|----------------|

=============================== Coverage summary ===============================
Statements   : Unknown% ( 0/0 )
Branches     : Unknown% ( 0/0 )
Functions    : Unknown% ( 0/0 )
Lines        : Unknown% ( 0/0 )
================================================================================

jest version = 16.0.0
test framework = jasmine2
config = {
  "preprocessorIgnorePatterns": [
    "node_modules"
  ],
  "modulePaths": [
    "MYPATH/src/main/webapp/scripts"
  ],
  "moduleNameMapper": [
    [
      "^.+\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$",
      "MYPATH/src/test/javascript/file-mock.js"
    ],
    [
      "^.+\\.(css|less)$",
      "MYPATH/src/test/javascript/style-mock.js"
    ]
  ],
  "testPathDirs": [
    "MYPATH/src/main/webapp/scripts"
  ],
  "testResultsProcessor": "MYPATH/node_modules/jest-teamcity-reporter",
  "collectCoverageFrom": [
    "MYPATH/src/main/webapp/scripts/**/*.js"
  ],
  "coverageThreshold": {
    "global": {
      "branches": 95,
      "functions": 95,
      "lines": 95,
      "statements": 95
    }
  },
  "rootDir": "MYPATH",
  "name": "-MYNAME",
  "testRunner": "MYPATH/node_modules/jest-jasmine2/build/index.js",
  "scriptPreprocessor": "MYPATH/node_modules/babel-jest/build/index.js",
  "usesBabelJest": true,
  "automock": false,
  "bail": false,
  "browser": false,
  "cacheDirectory": "/var/folders/x3/142j64696f11fhmkr3f2q6g42rxg89/T/jest",
  "clearMocks": false,
  "coveragePathIgnorePatterns": [
    "/node_modules/"
  ],
  "coverageReporters": [
    "json",
    "text",
    "lcov",
    "clover"
  ],
  "haste": {
    "providesModuleNodeModules": []
  },
  "mocksPattern": "__mocks__",
  "moduleDirectories": [
    "node_modules"
  ],
  "moduleFileExtensions": [
    "js",
    "json",
    "jsx",
    "node"
  ],
  "modulePathIgnorePatterns": [],
  "noStackTrace": false,
  "notify": false,
  "preset": null,
  "resetModules": false,
  "testEnvironment": "jest-environment-jsdom",
  "testPathIgnorePatterns": [
    "/node_modules/"
  ],
  "testRegex": "(/__tests__/.*|\\.(test|spec))\\.jsx?$",
  "testURL": "about:blank",
  "timers": "real",
  "useStderr": false,
  "verbose": null,
  "watch": false,
  "collectCoverage": true,
  "cache": false,
  "watchman": true,
  "testcheckOptions": {
    "times": 100,
    "maxSize": 200
  }
}

[mlippens]

It’s quite confusing that collectCoverageFrom must not contain rootDir while others must use it.

[difelice]

If you remove <rootDir> should work since it’s relative from root:

"collectCoverageFrom": [
    "src/main/webapp/scripts/**/*.js"
  ],

Another issue I found is that the command-line argument --collectCoverageFrom is ignored if a config file is provided, even without that option:

jext-config.json:

{
  "verbose": false
}

$ jest -c jest-config.json --coverage --collectCoverageFrom=**/*.js

UPDATE I could be wrong, but I noticed that the client argument is a string, but looks like the same config option expects an array

UPDATE 2 Even though the normalize takes care of the type, the argv option is discard later on.