karma.conf.js

module.exports = function(config) {
    config.set({

        // base path that will be used to resolve all patterns (eg. files, exclude)
        basePath: '',


        // frameworks to use
        // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
        frameworks: ['mocha'],

        // list of files / patterns to load in the browser
        files: [],

        // list of files to exclude
        exclude: [
        ],

        // preprocess matching files before serving them to the browser
        // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
        preprocessors: {
            'test/*.html': ['html2js'],
            'js/*.js': ['coverage']
        },

        // test results reporter to use
        // possible values: 'dots', 'progress'
        // available reporters: https://npmjs.org/browse/keyword/karma-reporter
        reporters: ['progress', 'coverage'],

        // web server port
        port: 9877,

        // enable / disable colors in the output (reporters and logs)
        colors: true,

        // enable / disable watching file and executing tests whenever any file changes
        autoWatch: true,

        // start these browsers
        // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
        browsers: [],

        // Continuous Integration mode
        // if true, Karma captures browsers, runs the tests and exits
        singleRun: false,

        // level of logging
        // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
        logLevel: config.LOG_INFO,

        coverageReporter: {
            dir: 'test/coverage',

            // Force the use of the Istanbul instrumenter to cover files
            instrumenter: {
                'js/*.js': ['istanbul']
            },

            reporters: [
                // reporters not supporting the `file` property
                { type: 'html', subdir: 'report-html' },
                { type: 'lcov', subdir: 'report-lcov' },
                // reporters supporting the `file` property, use `subdir` to directly
                // output them in the `dir` directory
                { type: 'lcovonly', subdir: '.', file: 'report-lcovonly.txt' }
            ]
        }
    });
};