From c60c0503782d68a1ba8a7b675f6e53713c5b67da Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 21 Mar 2013 20:34:37 +0000
Subject: * test/ruby/envutil.rb (assert_warning): show diff.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39871 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 test/ruby/envutil.rb | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/test/ruby/envutil.rb b/test/ruby/envutil.rb
index 98b89edd8c..85116fdac0 100644
--- a/test/ruby/envutil.rb
+++ b/test/ruby/envutil.rb
@@ -299,10 +299,9 @@ eom
         raise res
       end
 
-      def assert_warning(pat, message = nil)
+      def assert_warning(pat, msg = nil)
         stderr = EnvUtil.verbose_warning { yield }
-        message = ' "' + message + '"' if message
-        msg = proc {"warning message #{stderr.inspect} is expected to match #{pat.inspect}#{message}"}
+        msg = message(msg) {diff stderr, pat}
         assert(pat === stderr, msg)
       end
 
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