I have the following HTML code:

<div id="main">
  <form Id="search-form" action="/ViewRecord/AllRecord" method="post">
    <div>
        <fieldset>
            <legend>Search</legend>
           <p>
                <label for="username">Staff name</label>
                <input id="username" name="username" type="text" value="" />
                <label for="softype"> software type</label>

                <input type="submit" value="Search" />
            </p>
        </fieldset>
    </div>
  </form>
</div>

And the following Javascript code ( with JQuery as the library):

$(function() {
$("#username").click(function() {
        $.getJSON("ViewRecord/GetSoftwareChoice", {},
    function(data) {
       // use data to manipulate other controls
    });
    });
});

Now, how to test $("#username").click so that for a given input, it

1. calls the correct url ( in this case, its ViewRecord/GetSoftwareChoice)
2. And, the output is expected (in this case, function(data)) behaves correctly?

Any idea how to do this with QUnit?

Edit: I read the QUnit examples, but they seem to be dealing with a simple scenario with no AJAX interaction. And although there are ASP.NET MVC examples, but I think they are really testing the output of the server to an AJAX call, i.e., it's still testing the server response, not the AJAX response. What I want is how to test the client side response.