update karma test to expect ajax instead of POST

spec/javascripts/notes_spec.js

@@ -35,15 +35,13 @@ require('~/lib/utils/text_utility');
         expect($('.js-task-list-field').val()).toBe('- [x] Task List Item');
       });
 
-      it('submits the form on tasklist:changed', function() {
-        var submitted = false;
-        $('form').on('submit', function(e) {
-          submitted = true;
-          e.preventDefault();
+      it('submits an ajax request on tasklist:changed', function() {
+        spyOn(jQuery, 'ajax').and.callFake(function(req) {
+          expect(req.type).toBe('PATCH');
+          expect(req.url).toBe('http://test.host/frontend-fixtures/issues-project/notes/1');
+          return expect(req.data.note).not.toBe(null);
         });
-
-        $('.js-task-list-field').trigger('tasklist:changed');
-        expect(submitted).toBe(true);
+        return $('.js-task-list-field').trigger('tasklist:changed');
       });
     });