I am writing web tests that will retest bug fixes in the next version of a reporting application. There's not a good way to retest some of the bugs I found.
Example: unable to check if a control exists when items missing from the report selections unless the name of the control is known. This test will be added after the controls are added.
Another Example: the reports are opened as a pdf in a new window. I don't know how to verify the contents of a pdf file. I tried using the Fiddler utility and saving the file to disk, but none of those requests were captured.