I am trying to pass along a configuration file to Jest in order to run tests only from a given directory.

According to documentation, you can use config.testPathDirs: https://facebook.github.io/jest/docs/api.html#config-testpathdirs-array-string and you can call jest --config=<config-file>.

Unfortunately the documentation doesn't include any description of how the configuration file should look like.

I tried both these options in a jest-config.js file:

testPathDirs = ['coredata/src'];

and

config.testPathDirs(['coredata/src']);

and ran:

$ jest --config=jest-config.js

...but I get this type of error:

$ jest --config=jest-config.js

Using Jest CLI v0.4.0

Failed with unexpected error.



/Users/carles/dev/azazo/coredata/node_modules/jest-cli/src/jest.js:179

      throw error;

            ^

SyntaxError: Unexpected token c

    at Object.parse (native)

    at /Users/carles/dev/azazo/coredata/node_modules/jest-cli/src/lib/utils.js:291:23

    at _fulfilled (/Users/carles/dev/azazo/coredata/node_modules/jest-cli/node_modules/q/q.js:798:54)

    at self.promiseDispatch.done (/Users/carles/dev/azazo/coredata/node_modules/jest-cli/node_modules/q/q.js:827:30)

    at Promise.promise.promiseDispatch (/Users/carles/dev/azazo/coredata/node_modules/jest-cli/node_modules/q/q.js:760:13)

    at /Users/carles/dev/azazo/coredata/node_modules/jest-cli/node_modules/q/q.js:574:44

    at flush (/Users/carles/dev/azazo/coredata/node_modules/jest-cli/node_modules/q/q.js:108:17)

    at process._tickCallback (node.js:419:13)