mocking the logging in of a user using the facebook javascript sdk.

mock_login_user.js

describe('user is not logged in', function(){
	it('should log in the user', function(){
		var response = {
			session: null
		};

		spyOn(FB, 'init');
		spyOn(FB, 'getLoginStatus');
		spyOn(FB, 'login');

		step2._initialize();

		expect(FB.init).toHaveBeenCalled();
		expect(FB.getLoginStatus).toHaveBeenCalled();

		FB.getLoginStatus.mostRecentCall.args[0](response);
		expect(FB.login).toHaveBeenCalled();
	})
})