Add test for unrecognised user

When logging in with unrecognised credentials, the response should
include "Unrecognized user".

1 files changed, 1 insertions, 1 deletions

diff --git a/app.rb b/app.rb
index b4630e3..ef95715 100644
--- a/app.rb
+++ b/app.rb
@@ -17,7 +17,7 @@ post '/' do
     session[:user] = 1
     redirect '/'
   else
-    'POST works'
+    'Unrecognized user'
   end
 end