JQuery test with Jasmine fails

I am new to JQuery and have to test this function with Jasmine:

showUserDeleted: function (event) {
    $('#loginError').html((new ErrorView({code: "login"})).render().$el);
}

I devided this function into two:

showFailedLogin: function (event) {
    var value = (new ErrorView({code: "login"})).render().$el;
    showFailedLoginHelper(event, value);
},

showFailedLoginHelper: function (event, value){
    $('#loginError').html(value);
},

Now I want to test the helper function.

//...
var view;
var $;

beforeAll(function(done){
    require(['../../../public/js/app/views/LoginView', 'jquery'],
        function(LoginView, Jquery) {
            view = new LoginView();
            $ = view.getJQuery();
            done();
        }
    );
});

describe("showFailedLogin", function(){
    it ("should add something to loginError", function(){
        var input = "asdf";
        view.showFailedLoginHelper(undefined, input);
        expect( $('#loginError').html()).toBe(input);
    });
});
//...

When I run this it says:

Expected undefined to be 'asdf'.

What am I doing wrong?