The test web folder (testweb) is installed beneath the default Aeon web folder. The override to allow it to work is that there is a webpath.txt file inside the folder containing the location of that directory.
For example, if your test web resides in the default location, under the C:\Program Files (x86)\Aeon\Web folder, the webpath.txt file inside that folder would have one line that says "C:\Program Files (x86)\Aeon\Web\testweb" so the DLL will know where to look for those pages.