Test Angular Factory/Service Generated by Yeoman

Question

I have created an app with yeoman

yo angular --minsafe

And I want to test a factory/service I created

yo angular:factory analyticsService

Which produces /app/scripts/services/analyticsService.js

'use strict';

angular.module('angularPlaygroundApp')
  .factory('analyticsService', function ($resource) {
    // Service logic
    // ...

    var meaningOfLife = 42;

    // Public API here
    return {
      someMethod: function () {
        return meaningOfLife;
      }
    };
  });

and the test /test/spec/services/analyticsService.js

'use strict';

describe('Service: Analyticsservice', function () {

  // load the service's module
  beforeEach(module('angularPlaygroundApp'));

  // instantiate service
  var Analyticsservice;
  beforeEach(inject(function (_Analyticsservice_) {
    Analyticsservice = _Analyticsservice_;
  }));

  it('should do something', function () {
    expect(!!Analyticsservice).toBe(true);
  });

});

running grunt test produces the following failed test for the service

Running "karma:unit" (karma) task INFO [karma]: Karma v0.10.8 server started at http://localhost:8080/ INFO [launcher]: Starting browser Chrome WARN [watcher]: Pattern "/Users/lsims/projects/angular-playground/test/mock/*/.js" does not match any file. INFO [Chrome 31.0.1650 (Mac OS X 10.9.0)]: Connected on socket MTgYIXPHDT3JCSNU0ww9 Chrome 31.0.1650 (Mac OS X 10.9.0) Service: Analyticsservice should do something FAILED Error: [$injector:unpr] Unknown provider: AnalyticsserviceProvider <- Analyticsservice

My question is how does one test factories/services in Angular, and more specifically, how can one test the services and/or factories that Yeoman generates?

Thanks in advance

EXACT same problem. This is my first experience with Yeoman, and it's been a good one, but little gotchas like this are eating up my nights. — adamdport

Davin Tryon Davin Tryon · Accepted Answer · 2013-12-11T23:17:20

They are tested pretty much exactly as you have described. However, JavaScript is case sensitive, and you have changed the case of what the injector is going to search for.

analyticsService != Analyticsservice

The _Analyticsservice_ syntax allows you the wrap the literal value of your service in underscores so that you can then name the local variable to the same thing. So, asking inject for _Analyticsservice_ is asking for a service named with the string "Analyticsservice". When you have defined a service with the name "analyticsService".

So, I think you want:

'use strict';

describe('Service: analyticsService', function () {

  // load the service's module
  beforeEach(module('angularPlaygroundApp'));

  // instantiate service
  var analyticsService;
  beforeEach(inject(function (_analyticsService_) {
    analyticsService = _analyticsService_;
  }));

  it('should do something', function () {
    expect(!!analyticsService).toBe(true);
  });

injector in angular always appends the name Provider to the end of the objects in manages. The the error is telling you that the injector could not find an object with the name "AnalyticsserviceProvider" defined.

Test Angular Factory/Service Generated by Yeoman

1 Answers