karma.conf.js

'use strict';

module.exports = function(karma) {

    var src_path = './js',
        preprocessors = {};

    preprocessors[src_path+'/components/*.js'] = ['browserify'];
    preprocessors[src_path+'/tests/*.js'] = ['browserify'];

    var babelIstanbul = require('browserify-babel-istanbul'),
        isparta = require('isparta');

    karma.set({

        frameworks: [ 'jasmine', 'browserify' ],

        files: [
            {pattern: src_path+'/test_libs/*.js', watched: false, served: true, included: true},
            {pattern: src_path+'/components/**/*.js', watched: false, served: true, included: false},
            src_path+'/tests/**/*.js'
            //'test_libs/**/*.js'
        ],

        reporters: [ 'dots', 'coverage' ],

        preprocessors: preprocessors,

        browsers: [ 'Chrome' ],


        logLevel: 'LOG_DEBUG',

        // to avoid DISCONNECTED messages
        browserDisconnectTimeout : 10000, // default 2000
        browserDisconnectTolerance : 1, // default 0
        browserNoActivityTimeout : 60000, //default 10000

        // browserify configuration
        browserify: {
            debug: true,
            transform: [
                babelIstanbul({
                    defaultIgnore: false,
                    instrumenter: isparta,
                    instrumenterConfig: { babel: { presets: ["es2015"] } },
                    ignore: ['**/test_libs/**', '**/node_modules/**', '**/bower_components/**', '**/test/**', '**/tests/**', '**/*.json']
                }),
                ['babelify', {presets: ['babel-preset-es2015']}]
            ]
        },

        coverageReporter: {
            reporters: [
                {type: 'html', dir:'./coverage/'},
                {type: 'text-summary'}
            ]
        }

        //coverageReporter: {
        //    // configure the reporter to use isparta for JavaScript coverage
        //    // Only on { "karma-coverage": "douglasduteil/karma-coverage#next" }
        //    instrumenters: { isparta : require('isparta') },
        //    instrumenter: {
        //        '**/*.js': 'isparta'
        //    },
        //    instrumenterOptions: {
        //        isparta: { babel : { presets: 'es2015' } }
        //    }
        //}
    });
};