1 files changed, 12 insertions, 6 deletions
diff --git a/spec/ruby/core/exception/name_error_spec.rb b/spec/ruby/core/exception/name_error_spec.rb
index d0a810029b..e901a80c42 100644
--- a/spec/ruby/core/exception/name_error_spec.rb
+++ b/spec/ruby/core/exception/name_error_spec.rb
@@ -1,11 +1,5 @@
 require_relative '../../spec_helper'
 
-describe "NameError" do
-  it "is a superclass of NoMethodError" do
-    NameError.should be_ancestor_of(NoMethodError)
-  end
-end
-
 describe "NameError.new" do
   it "should take optional name argument" do
     NameError.new("msg","name").name.should == "name"
@@ -22,3 +16,15 @@ describe "NameError.new" do
     end
   end
 end
+
+describe "NameError#dup" do
+  it "copies the name and receiver" do
+    begin
+      foo
+    rescue NameError => ne
+      name_error_dup = ne.dup
+      name_error_dup.name.should == :foo
+      name_error_dup.receiver.should == self
+    end
+  end
+end