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README.md

Build Status NPM Node version Gitter

Stryker Mocha Runner

A plugin to use Mocha in Stryker, the JavaScript mutation testing framework.

IMPORTANT: Starting from stryker-mocha-runner@0.4.0 the test framework has been moved to a separate module. Please also install stryker-mocha-framework if you've previously used this module.

Install

Install stryker-mocha-runner locally within your project folder, like so:

npm i --save-dev stryker-mocha-runner

Peer dependencies

The stryker-mocha-runner is a plugin for stryker to enable mocha as a test runner. As such, you should make sure you have the correct versions of its dependencies installed:

  • mocha
  • stryker-api

Configuring

You can configure the mocha test runner in the stryker.conf.js file.

// stryker.conf.js
module.exports = function (config) {
    config.set({
        // ...
        testRunner: 'mocha',
        // ...
        mochaOptions: {
            // Optional mocha options
            files: [ 'test/**/*.js' ]
            opts: 'path/to/mocha.opts',
            ui: 'bdd',
            timeout: 3000,
            require: [ /*'babel-register' */],
            asyncOnly: false
        }
    });
}

mochaOptions.files [string or string[]]

Default: 'test/**/*.js'

Choose which files to include. This is comparable to mocha's test directory although there is no support for --recursive.

If you want to load all files recursively: use a globbing expression ('test/**/*.js'). If you want to decide on the order of files, use multiple globbing expressions. For example: use ['test/helpers/**/*.js', 'test/unit/**/*.js'] if you want to make sure your helpers are loaded before your unit tests.

mochaOptions.opts [string]

Default: undefined

Specify a 'mocha.opts' file to be loaded. Options specified directly in your stryker.conf.js file will overrule options from the 'mocha.opts' file.

The only supported mocha options are used: --ui, --require, --async-only, --timeout (or their short form counterparts). Others are ignored by the stryker-mocha-runner.

mochaOptions.ui [string]

Default: undefined

Set the name of your mocha ui

mochaOptions.require [string[]]

Default: []

Set mocha's require option

mochaOptions.asyncOnly [boolean]

Default: false

Set mocha's asyncOnly option

mochaOptions.timeout [number]

Default: undefined

Set mocha's timeout option