I am working on a test to modify a banner on an interior page of a single page application. The trick is that every page in the app has the same URL, so how to I begin to construct this test when the URL criteria is off the table?
As per my knowledge you'll need to update at.js to version 2.x and implement trigger views for your SPA.
Another option is you can try setting up an activity using form based composer.
Let me know if this helps