From 7d6298d8bded98d7abdf308e2e784769c5d79780 Mon Sep 17 00:00:00 2001
From: Damien Walsh <damienw@magmadigital.co.uk>
Date: Mon, 12 May 2014 15:58:58 +0100
Subject: [PATCH] Improve exception messages for mount()

---
 src/Silex/Application.php | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/Silex/Application.php b/src/Silex/Application.php
index ef3070ec2..3c32eef88 100644
--- a/src/Silex/Application.php
+++ b/src/Silex/Application.php
@@ -466,11 +466,17 @@ public function sendFile($file, $status = 200, array $headers = array(), $conten
      * @param ControllerCollection|ControllerProviderInterface $controllers A ControllerCollection or a ControllerProviderInterface instance
      *
      * @return Application
+     *
+     * @throws \LogicException
      */
     public function mount($prefix, $controllers)
     {
         if ($controllers instanceof ControllerProviderInterface) {
             $controllers = $controllers->connect($this);
+
+            if (!$controllers instanceof ControllerCollection) {
+                throw new \LogicException('The "connect" method of the ControllerProviderInterface must return a ControllerCollection.');
+            }
         }
 
         if (!$controllers instanceof ControllerCollection) {