QUnit: How to test ajax call without modifying the ajax call

Question

How can I write a QUnit test for this:

function doSomethingWithAjax() {
    $.ajax({
        url: '/GetHelloWorld',
        success: function(data) { $("#responseFromServer").text(data); },
    });
}

Mockjax+qunit requires a start() call in the ajax complete() method.

Answer 1

test("should mock ajax", function() {

    $.ajax = function(options) {
        equals(options.url, "/GetHelloWorld");
        options.success("Hello");
    };

    doSomethingWithAjax();

    equal($("#responseFromServer").text(), "Hello");
});