How to fake jquery.ajax() response?

Question

I am writing some QUnit tests for a JavaScript that makes AJAX calls.

For isolation I overwrite $.ajax to write the parameter array of an AJAX call to a

Answer 1

After reading inspired by @Robusto and @Val, I found a method that works:

//Mock ajax function
$.ajax = function (param) {
    _mockAjaxOptions = param;
    //call success handler
    param.complete("data", "textStatus", "jqXHR");
};

Instead of raising the event from any real $.ajax code or by triggering any events, I have my fake ajax object call the function (which is passed in as a parameter to $.ajax()) as part of my fake function.