Testing Compojure applications in the REPL.

routes.clj

(defroutes app
  (GET "/" [] "<h1>Index route</h1>")
  (route/not-found "<h1>Page not found</h1>"))

(defn fake-request [routes uri method & params]
  (let [localhost "127.0.0.1"]
    (routes {:server-port 80
             :server-name localhost
             :remote-addr localhost
             :uri uri
             :scheme :http
             :headers (or params {})
             :request-method method})))

;; YOU CAN TEST ROUTES IN THE REPL

(def index-page (fake-request app "/" :get))