Simple app just says "Simple App!" no matter what we do::
>>> from testrunner import *
>>> from simpleapp import *
>>> res = send_request(simple_app, '/')
>>> print res
200 OK
Content-Type: text/html
Simple App
Simple App!
>>> res2 = send_request(simple_app, '/foo/bar')
>>> res.body == res2.body
True
And that's all it does.