Testing Ajax pages with WebTest

I just learned that you need to add some delay to the test script after making an Ajax call. (Isn't it logical? Why didn't I think of that?).

For example, assuming there is an onChange handler in the combo box, you should add a sleep step after setSelectField. Groovy code below:

setSelectField(htmlId: 'foo', text: 'bar')
sleep(seconds: 5)
...