How to Jasmine test code within angular module run block

Question

I would like to Jasmine test that Welcome.go has been called. Welcome is an angular service.

angular.module('welcome',[])
  .run(function(Welcome) {
    Welcome.go();
  });

This is my test so far:

describe('module: welcome', function () {

  beforeEach(module('welcome'));

  var Welcome;
  beforeEach(inject(function(_Welcome_) {
    Welcome = _Welcome_;
    spyOn(Welcome, 'go');
  }));

  it('should call Welcome.go', function() {
    expect(Welcome.go).toHaveBeenCalled();
  });
});

Note:

welcome (lowercase w) is the module
Welcome (uppercase W) is the service

"Run blocks typically contain code which is hard to unit-test, and for this reason should be declared in isolated modules, so that they can be ignored in the unit-tests." -- that's from the Angular documentation ;) It's not clear what Welcome.go() does, but you might consider calling that from one of your app's top level controllers, which you can test as shown above. — Sunil D.
– Sunil D., Commented Jul 25, 2014 at 5:42

Andrew · Accepted Answer · 2014-07-25 06:19:07Z

20

Managed to figure it out. Here is what I came up with:

'use strict';

describe('module: welcome', function () {

  var Welcome;

  beforeEach(function() {
    module('welcome', function($provide) {
      $provide.value('Welcome', {
        go: jasmine.createSpy('go')
      });
    });

    inject(function (_Welcome_) {
      Welcome = _Welcome_;
    })
  });


  it('should call Welcome.go on module run', function() {
    expect(Welcome.go).toHaveBeenCalled();
  });
});

answered Jul 25, 2014 at 6:19

Andrew

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1 Comment

dbabaioff Over a year ago

Nice post about testing config and run blocks in AngularJS: blog.andre-eife.com/2015/02/10/test-run-and-config-blocks.html

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