Angular app test with Karma - angularjs

Question

I'm new to Jasmine tests with Karma. I'm getting following error while executing the tests.
Here are my files.
message.service.js // Service file
(function() {
'use strict';
angular.module("app").factory('MessageService', [MessageService]);
function MessageService() {
var service = {};
//var gui = require('nw.gui');
service.alert = function() {
//gui.Window.open('/');
//$window.open('/message');
return 'hello';
};
return service;
};
})(); // IIFE
message.service.spec.js // Service test file
describe('Message Service', function() {
var messageService;
beforeEach(angular.mock.module('app'));
beforeEach(inject(function(_MessageService_) {
messageService = _MessageService_;
}));
it('should exist', function() {
expect(messageService).toBeDefined();
});
it('should return hello', function() {
expect(messageService.alert()).toEqual('hello');
});
});
app.module.js // Main app file
(function() {
'use strict';
angular.module("app", ['ngRoute', 'ui.bootstrap', 'ui.router']);
/*angular.module("app").run(['$rootScope', 'StartupService', function($rootScope, startupService){
startupService.init($rootScope);
}]);*/
})(); // IIFE
If I change following line in message.service.js
angular.module("app").factory('MessageService', [MessageService]);
to
angular.module("app",[]).factory('MessageService', [MessageService]);
Then tests work fine but application will not work(due to re initiation of module I guess). How can I make my app to work for both tests and normal app execution? Appreciate your help

Answer 1

It was my mistake. I haven't included the js file in Karma config related to the ui.bootstrap module. After that it worked fine.
For anyone who gets such error check whether you have included all the dependency files on Karma config, what you have defined in main app.
ex: assume your main app file is like below.
angular.module("app", ['ngRoute', 'ui.bootstrap', 'ui.router']);
Then your Karma config file should look like this
files: [
'assets/lib/angular/angular.min.js',
'assets/lib/angular-ui-router/angular-ui-router.min.js',
'assets/lib/angular-bootstrap/ui-bootstrap-tpls-1.3.2.min.js'
],
Thanks for your help.