Expected a spy, but got Function

Question

I am trying to implement a test (1) for this module (2).
My purpose is to check if the collection is fetched when a particular event is triggered.
As you can see fr

Answer 1

You need to get into the actual method, which in this case is on the prototype.

describe('When onGivePoints is fired', function () {
    beforeEach(function () {
        spyOn(UsersBoardCollection.prototype, 'restartPolling').andCallThrough();
        app.vent.trigger('onGivePoints');
    });
    it('the board collection should be fetched', function () {
        expect(UsersBoardCollection.prototype.restartPolling).toHaveBeenCalled();
    });
});

Spying on the prototype is a nice trick you can use when you can't get to the actual instance you want to spy on.

Answer 2

I had this bug because I had two versions of sinon loaded, or possibly i wasn't initialising sinon-jasmine correctly. When I explicitly loaded sinon and then sinon jasmine in my spec setup, it started running correctly.

Answer 3

I was also getting the same issue but I resolved it by passing an argument in the function call. Then you have to write your test case like this in the it

var data = {name:"test"}
spyOn(UsersBoardCollection.prototype, "restartPolling").and.callThrough();
UsersBoardCollection.prototype.restartPolling(data);
expect(UsersBoardCollection.prototype.restartPolling).toHaveBeenCalled();