Example AngularJS Controller Unit Testing ( Mock all Services dependencies )

Angular-Controller-Mock.js

'use strict';

angular.module('angularApp')

    .controller('MainCtrl', function ($scope, $rootScope, loadConfig) {
        //services dependecies ( should be mock )
        $scope.loadConfig = loadConfig.getConfig('main', $rootScope.lang);
        
        //function change route
        $scope.createRoute = function(link) {
		$location.path(link);
	};
        
        //switch language
        $scope.switchLang = function() {
		$rootScope.lang = ($rootScope.lang === 'th') ? 'en' : 'th';
	};
        
    });

controllerTest.js

'use strict';

describe('Controller: MainCtrl', function () {

    var MainCtrl,scope;

    var mockService = {
        getConfig: function () {
            return {config: 'configX'};
        }
    };

    // load the controller's module
    beforeEach(function () {
        module('angularApp');
    });

    // Initialize the controller and a mock scope
    beforeEach(inject(function ($controller, $rootScope) {
        MainCtrl = $controller;
        scope = $rootScope.$new();
        MainCtrl = MainCtrl('MainCtrl', {
            $scope: scope,
            loadConfig: mockService
        });
    }));

    it('should not to be null and have configX', function () {
        //should not be null because mockServices 
        expect(scope.loadConfig).not.toBe(null);
        //should hava data 
        expect(scope.loadConfig.config).toBe('configX');
    });
    
    it('should change language from th to en', function(){
        //trigger to chage lang
        scope.switchLang();
        //expect new lang to be en
        expect(scope.lang).toBe('en');
        //trigger to change lang
        scope.switchLang();
        //expect new lang to be th
        expect(scope.lang).toBe('th');
    });
    
    it('should create workflow id',function(){
        //trigger to route page
       scope.createRoute("/something");
       //expect new route path
       expect(location.path()).toBe('/something');
    });
});