This is not an appropriate Accept headers for all the routes being tested here, e.g,. `config`. The `routes` dictionary maps "route" -> "status code". We could change the value of this dictionary to be an object of key/value pairs for that test, e.g., `{ statusCode: 200, accept 'application/json' }`. It might be fine to have the default accept be `text/html` so you don't have declare that for the vast majority of the routes.