karma.conf.js

"use strict";

module.exports = function (config) {

    var configuration = {

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

        // list of files / patterns to load in the browser
        files: [
            'bower_components/polymer/polymer.js',
            'test/karma-loader.js',

            'test/test-component.html',

            'filters/**/*.js',

            'filters/**/*.spec.html',

            'filters/**/*.test.js',

            {
                pattern: 'bower_components/**/*',
                included: false
            },
            {
                pattern: 'filters/**/*',
                included: false
            },
        ],

        preprocessors: {
            // source files, that you wanna generate coverage for
            // do not include tests or libraries
            // (these files will be instrumented by Istanbul)
            'filters/**/*.js': ['coverage']
        },

        coverageReporter: {
            type: 'lcov',
            dir: '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: 9876,

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

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

        // start these browsers
        // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
        browsers: ['Chrome'],
        customLaunchers: {
            Chrome_travis_ci: {
                base: 'Chrome',
                flags: ['--no-sandbox']
            }
        },

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

    };

    if(process.env.TRAVIS){
        configuration.browsers = ['Chrome_travis_ci'];
    }

    config.set(configuration);
};