Code snippet for blog post, Retrieving Data with AngularJS and the MEAN Stack: http://wp.me/p1RD28-16F. Set Karma's browser for running tests. See complete project at: https://github.com/garystafford/meanstack-data-samples

snippet_karma.conf.js

// Karma configuration
module.exports = function (config) {
    // Determines Karma's browser choice based on environment
    var testBrowser = 'Chrome'; // Default browser
    if (process.env.NODE_ENV  === 'travis') {
        testBrowser = 'PhantomJS'; // Must use for headless CI (Travis-CI)
    }
    console.log("Karma browser: " + testBrowser);

...

        // Start these browsers, currently available:
        // Chrome, ChromeCanary, Firefox, Opera,
        // Safari (only Mac), PhantomJS, IE (only Windows)
        browsers: [testBrowser],