ostruct.rb: refine visibility failure message

* lib/ostruct.rb (method_missing): raise an exception with proper
  visibility message.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58195 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 24 insertions, 0 deletions

diff --git a/test/ostruct/test_ostruct.rb b/test/ostruct/test_ostruct.rb
index b9bbaace55..32eb73a89d 100644
--- a/test/ostruct/test_ostruct.rb
+++ b/test/ostruct/test_ostruct.rb
@@ -192,4 +192,28 @@ class TC_OpenStruct < Test::Unit::TestCase
     os = assert_nothing_raised(ArgumentError, bug) {c.allocate}
     assert_instance_of(c, os)
   end
+
+  def test_private_method
+    os = OpenStruct.new
+    class << os
+      private
+      def foo
+      end
+    end
+    assert_raise_with_message(NoMethodError, /private method/) do
+      os.foo true, true
+    end
+  end
+
+  def test_protected_method
+    os = OpenStruct.new
+    class << os
+      protected
+      def foo
+      end
+    end
+    assert_raise_with_message(NoMethodError, /protected method/) do
+      os.foo true, true
+    end
+  end
 end