and the tests send a post request with a url body parameter and not an original_url body parameter.
For the last test, your app has zero url valiation to confirm that it is an http or https url. Plus, if I submit a url like http://www.freecodecamp.org/learn, your returns an error when it instead should create a short url.
FYI - Using count for the shortened url will not work if you restart your server. Everytime you restart the server, count starts over at 0, so it will not reliably be able to get the original url from a shortened version if a restart happens in between.