test/envutil: fix assert_raise_with_message

Import mu_pp method from Ruby trunk.

1 files changed, 5 insertions, 0 deletions

diff --git a/test/envutil.rb b/test/envutil.rb
index da304102..89332b35 100644
--- a/test/envutil.rb
+++ b/test/envutil.rb
@@ -1,6 +1,7 @@
 # -*- coding: us-ascii -*-
 require "timeout"
 require "rbconfig"
+require "pp"
 
 module EnvUtil
   def rubybin
@@ -259,6 +260,10 @@ eom
         values
       end
 
+      def mu_pp(obj) #:nodoc:
+        obj.pretty_inspect.chomp
+      end
+
       # :call-seq:
       #   assert_raise_with_message(exception, expected, msg = nil, &block)
       #