Grunt task to run tests with Jest.

This plugin requires Grunt ~0.4.0

If you haven't used Grunt before, be sure to check out the Getting Started guide, as it explains how to create a Gruntfile as well as install and use Grunt plugins. Once you're familiar with that process, you may install this plugin with this command:

npm install grunt-jest --save-dev

Once the plugin has been installed, it may be enabled inside your Gruntfile with this line of JavaScript:

grunt.loadNpmTasks('grunt-jest');

Run this task with the grunt jest command.

Task options may be specified according to the grunt Configuring tasks guide.

Type: String srcpath

The path to a jest config file specifying how to find and execute tests.

Type: RegExp Default: /.*/

Only tests which match this pattern will execute.

Type: Boolean Default: false

Indicates that test coverage information should be collected and reported in the output.

Type: Number Default: Number of cores available on this machine.

Specifies the maximum number of workers the worker-pool will spawn for running tests. (it is usually best not to override this default)

Type: Boolean Default: false

Attempts to identify which tests to run based on which files have changed in the current repository. Only works if you're running tests in a git repository at the moment.

Type: Boolean Default: false

Run all tests serially in the current process (rather than creating a worker pool of child processes that run tests). This is sometimes useful for debugging, but such use cases are pretty rare.

jest: {
  options: {
    coverage: true,
    testPathPattern: /.*-test.js/
  }
}