How to test dynamic population / custom parameters via Adwords / Adwords editor


I am populating Unbounce pages with dynamic content stored in query strings from Adwords ad URLs

I know how to do this in Unbounce & Adwords editor.

Problem is I am not sure how to test the results, Adwords editor offers a layout for creating parameters: but (as far as I can see) no way off testing the link with the query string attached.

Anyone know how to do this?