1 files changed, 25 insertions, 0 deletions
diff --git a/spec/ruby/core/module/to_s_spec.rb b/spec/ruby/core/module/to_s_spec.rb
index 29f6ecf726..83c0ae0825 100644
--- a/spec/ruby/core/module/to_s_spec.rb
+++ b/spec/ruby/core/module/to_s_spec.rb
@@ -42,4 +42,29 @@ describe "Module#to_s" do
     obj = ModuleSpecs::NamedClass.new
     obj.singleton_class.to_s.should =~ /\A#<Class:#<ModuleSpecs::NamedClass:0x\h+>>\z/
   end
+
+  it "always show the refinement name, even if the module is named" do
+    module ModuleSpecs::RefinementInspect
+      R = refine String do
+      end
+    end
+
+    ModuleSpecs::RefinementInspect::R.name.should == 'ModuleSpecs::RefinementInspect::R'
+    ModuleSpecs::RefinementInspect::R.to_s.should == '#<refinement:String@ModuleSpecs::RefinementInspect>'
+  ensure
+    ModuleSpecs.send(:remove_const, :RefinementInspect)
+  end
+
+  it 'does not call #inspect or #to_s for singleton classes' do
+    klass = Class.new
+    obj = klass.new
+    def obj.to_s
+      "to_s"
+    end
+    def obj.inspect
+      "inspect"
+    end
+    sclass = obj.singleton_class
+    sclass.to_s.should =~ /\A#<Class:#<#{Regexp.escape klass.to_s}:0x\h+>>\z/
+  end
 end