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Routes

Testing recipes for routes

Table of contents

Route specification

AngularJS routes enable you to create different URLs for different content in your application. Routes are sometimes left out but it is usually seen as a good practice for double-entry bookkeeping. In our example, we will use a very simple route configuration with only one route pointing to home.

http://angular-testing-recipes/#dashboard
http://angular-testing-recipes/#products

For example, when the browser loads these links, the same AngularJS application will be loaded (located at http://angular-testing-recipes/index.html), but AngularJS will look at the route (the part of the URL after the #) and decide what HTML template to show.

Why to test angular routes in my app?

Params are passing via url and your app have to manipulate these informations. Are they correct? Really? How to validate these data?

When you test route params/informations, is used many security concepts. Based in security, all data in/out via app is insecure, because this you should test all ways. Let`s think about this route:

http://angular-testing-recipes/#product/1/edit

  ...
  $routeProvider.when('/product/:id/edit', {
    templateUrl: 'edit.html',
    controller: 'ProductCtrl'
  })
  ...

This route is used for edit a specific product of your app, ok? But how to check if :id param is a number really? A simple way is using resolve for this, job.

Many apps do this in controllers, but its not correct because this responsible is more of route then controller and if resolve is used for it your app dont load controller, view and other resources for that page.

  ...
  $routeProvider.when('/product/:id/edit', {
    templateUrl: 'edit.html',
    controller: 'ProductCtrl',
    resolve: {
      // id validation happens here
      ...
    }
  })
  ...

Boilerplate

This code is using ngRoute module, but the concept is the same for other route modules.

This feature is defined based in your necessity in app. For example, let`s take a look in this route spec:

(function() {
  'use strict';

  angular.module('myRouteApp', ['ngRoute']).config(function($routeProvider){
    $routeProvider.when('/dashboard', {
      templateUrl: 'dashboard.tpl.html',
      controller: 'DashboardCtrl'
    })
    .otherwise({ redirectTo:'/dashboard' });
  });

}());

Based in this route specification, our tests for coverage this feature with behaviour expected is:

describe('routes', function(){
  'use strict';

  var $route, $rootScope, $location, $httpBackend;

  // load the application module
  beforeEach(module('myRouteApp'));

  beforeEach(inject(function (_$route_, _$rootScope_, _$location_, _$httpBackend_){
    $route = _$route_;
    $rootScope = _$rootScope_;
    $location = _$location_;
    $httpBackend = _$httpBackend_;

    $httpBackend.when('GET', 'dashboard.tpl.html').respond('dashboard');
    $rootScope.showLogs = false;
  }));

  it('should navigate to dashboard', function(){
    // navigate using $apply to safely run the $digest cycle
    $rootScope.$apply(function() {
      $location.path('/dashboard');
    });
    expect($location.path()).toBe('/dashboard');
    expect($route.current.templateUrl).toBe('dashboard.tpl.html');
    expect($route.current.controller).toBe('DashboardCtrl');
  });

  it('should redirect not registered urls to dashboard', function(){
    // navigate using $apply to safely run the $digest cycle
    $rootScope.$apply(function() {
      $location.path('/incorrect-route');
    });
    expect($location.path()).toBe('/dashboard');
    expect($route.current.templateUrl).toBe('dashboard.tpl.html');
    expect($route.current.controller).toBe('DashboardCtrl');
  });
});