HTTP server for unit tests in Delphi

I use Indy's TIdHttpServer to serve stuff in the same process.

This approach allows me to check that the requests coming in are correct, as well as checking the behaviour from the client end.

Also, you can individually set up the server on a testcase by testcase basis, making your unit tests easier to understand (meaning that you don't have a piece of the 'test' somewhere else).