Unit test when loading things at app run with AngularJS

Question

I need my app to run some configuration at runtime vi an HTTP endpoint.

I wrote a simple service to do that:

module.factory('config', function ($http, analytics) {
    return {
        load: function () {
            $http.get('/config').then(function (response) {
                analytics.setAccount(response.googleAnalyticsAccount);
            });
        }
    }
});

Next, I call this module in a run block of my app module:

angular.module('app').***.run(function(config) {
        config.load();
    });

All is working well when the app is running but in my unit tests, I get this error: "Error: Unexpected request: GET /config"

I know what it means but I don't know how to mock it when it happens from a run block.

Thanks for your help

EDIT to add spec

Calling this before each

beforeEach(angular.mock.module('app'));

Tried this to mock $httpBackend:

beforeEach(inject(function($httpBackend) {

    $httpBackend.expectGET('/config').respond(200, {'googleAnalyticsAccount':});

    angular.mock.module('app')

    $httpBackend.flush();
}));

But got:

TypeError: Cannot read property 'stack' of null
        at workFn (/Users/arnaud/workspace/unishared-dredit/test/lib/angular/angular-mocks.js:1756:55)
    TypeError: Cannot read property 'stack' of null
        at workFn (/Users/arnaud/workspace/unishared-dredit/test/lib/angular/angular-mocks.js:1756:55)
    TypeError: Cannot read property 'stack' of null
        at workFn (/Users/arnaud/workspace/unishared-dredit/test/lib/angular/angular-mocks.js:1756:55)

EDIT since update to AngularJS 1.0.6

Since I've updated to AngularJS 1.0.6, advised by Igor from the Angular team, the issue is gone but now I've now got this one, which sounds more "normal" but I still can't figure out how to make it works.

Error: Injector already created, can not register a module!

Answer 1

I struggled with this error for a little while, but managed to come up with an sensible solution.

What I wanted to achieve is to successfully stub the Service and force a response, on controllers it was possible to use $httpBackend with a request stub or exception before initiating the controller. In app.run() when you load the module it initialises the object and it's connected Services etc.

I managed to stub the Service using the following example.

describe('Testing App Run', function () {
    beforeEach(module('plunker', function ($provide) {
        return $provide.decorator('config', function () {
            return {
                load: function () {
                    return {};
                }
            };
        });
    }));


    var $rootScope;
    beforeEach(inject(function (_$rootScope_) {
        return $rootScope = _$rootScope_;
    }));

    it("defines a value I previously could not test", function () {
        return expect($rootScope.value).toEqual('testing');
    });

});

I hope this helps your app.run() testing in the future.