Check by #name [ruby-core:90853] [Bug #15497]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@66755 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/ruby/test_module.rb

@@ -2061,17 +2061,13 @@ class TestModule < Test::Unit::TestCase
       $foo
       \u3042$
     ].each do |name|
-      assert_raise_with_message(NameError, /#{Regexp.quote(quote(name))}/) do
+      e = assert_raise(NameError) do
         Module.new { attr_accessor name.to_sym }
       end
+      assert_equal(name, e.name.to_s)
     end
   end
 
-  private def quote(name)
-    encoding = Encoding.default_internal || Encoding.default_external
-    (name.encoding == encoding || name.ascii_only?) ? name : name.inspect
-  end
-
   class AttrTest
     class << self
       attr_accessor :cattr