How to add a directory to Node path before the tests are run?

[Volkan Unsal]

In my webpack config file, I have the following configuration option that resolves all modules to a few common root paths where they might be found:

resolve: {

    // you can now require('file') instead of require('file.coffee')

    extensions: ['', '.js', '.json', '.coffee'],

    // Now you can require('file') instead of require('../../file')

    root: [__dirname + '/assets', path.join(__dirname, 'vendor/assets/components')]

  },

This allows me to use absolute paths in my require() calls. How would I be able to replicate the same feature with jest? I have looked at the setupEnvScriptFile configuration option. Here are the content of my configuration block and the testSetup.js file:

# package.json

"jest": {

    "globals": {

      "__DEV__": true

    },

    "setupEnvScriptFile": "script/testSetup2.js",

    "scriptPreprocessor": "script/preprocessor.js",

    "testFileExtensions": ["coffee", "js"],

    "unmockedModulePathPatterns": ["<rootDir>/node_modules/react"]

  }

# testSetup.js

process.env.NODE_PATH = __dirname + "/assets";

This doesn't work for me for whatever reason. What am I doing wrong?

[Volkan Unsal]

By the way, note the filename is different for testScript.js file in config block. I was just testing something there.