testing wrapper methods

[Wendy Gibbons]

my new company have started doing TDD on the new javascript webstuff.
I have written a javascript method:

 writeConfiguration: function (request, screenId,userId) {
        var me = this;
        
        Ext.Ajax.request({
          url: me.configUrl,
          method: 'POST',
          jsonData : request,
          success: function (response, opts) {
              U4.log('saved the display information panel configuration for screen ' + screenId + ' & user ' + userId);
              return;
          },
          failure: function (response, opts) {
              U4.log('failed to save the related information panel configuration for screen ' + screenId + ' & user ' + userId);
              return;
          }
      });

I can't test it calls the service, as that is an integration test (fully understand)
so what can I actually test?
my mentor wants me to test the parameters are passed in correctly, but these are just constructed in the test.

[Jeanne Boyarsky]

Can you let the url for the AJAX submission be a fake one? In particular, just a simple one that always returns success or failure so you can test the function logs the right data?

[Wendy Gibbons]

a friend (yes my out of work conversations are THAT DULL) suggested i stub the ajax and test the path is correct so that if anyone changes the path in the method it isn't happy.