Sometime when you use yeoman you must add more config to Gruntfiles.js & karma-e2e.conf.js to complete it. the easiest to test e2e in angular is open server with grunt and add proxies to karma-e2e.conf.js then run it. By the way I found that sometimes when you use old version of angular-generator yo will fail when run test (it will start up but …

Angular-config-e2e-testing.js

//add this config to karma-e2e.conf.js 
// Uncomment the following lines if you are using grunt's server to run the tests
proxies = {
   '/': 'http://localhost:9000/'
};
// URL root prevent conflicts with the site root
urlRoot = '_karma_';

E2ETesting.js

'use strict';

describe("E2E testing basic route", function() {

    beforeEach(function() {
        browser().navigateTo('/');
    });

    it('should navigate to somewhere ', function() {
        expect(browser().location().url()).toBe("/");
    });

});

Gruntfiles.js

karma: {
      //add this e2e for load config files
      e2e: {
        configFile: 'karma-e2e.conf.js',
        singleRun: true
      },
      unit: {
        configFile: 'karma.conf.js',
        singleRun: true
      }
    }