From ea7717c8e5e1a02727c588dfa92b07d7c51fd8c4 Mon Sep 17 00:00:00 2001
From: Jan Brecka <jan.brecka@gmail.com>
Date: Thu, 20 Mar 2014 14:24:42 +0100
Subject: [PATCH] improve exception message

---
 src/Composer/Autoload/ClassMapGenerator.php            | 2 +-
 tests/Composer/Test/Autoload/ClassMapGeneratorTest.php | 1 -
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/src/Composer/Autoload/ClassMapGenerator.php b/src/Composer/Autoload/ClassMapGenerator.php
index d470ca2da..77dc08dc9 100644
--- a/src/Composer/Autoload/ClassMapGenerator.php
+++ b/src/Composer/Autoload/ClassMapGenerator.php
@@ -80,7 +80,7 @@ class ClassMapGenerator
 
             foreach ($classes as $class) {
                 if (array_key_exists($class, $map)) {
-                    throw new \RuntimeException('Ambiguous reference to class "'.$class.'" was found.');
+                    throw new \RuntimeException('Ambiguous class "'.$class.'" resolution; defined in "'.$map[$class].'" and in "'.$filePath.'" file.');
                 }
 
                 $map[$class] = $filePath;
diff --git a/tests/Composer/Test/Autoload/ClassMapGeneratorTest.php b/tests/Composer/Test/Autoload/ClassMapGeneratorTest.php
index fe33b1f36..58e68c0d5 100644
--- a/tests/Composer/Test/Autoload/ClassMapGeneratorTest.php
+++ b/tests/Composer/Test/Autoload/ClassMapGeneratorTest.php
@@ -106,7 +106,6 @@ class ClassMapGeneratorTest extends \PHPUnit_Framework_TestCase
 
     /**
      * @expectedException \RuntimeException
-     * @expectedExceptionMessage Ambiguous reference to class "A" was found.
      */
     public function testAmbiguousReference()
     {