diff --git a/test/scope.rb b/test/scope.rb
new file mode 100755
index 00000000..9086aaea
--- /dev/null
+++ b/test/scope.rb
@@ -0,0 +1,25 @@
+#!/usr/bin/env ruby
+require 'rubygems'
+require 'johnson/tracemonkey'
+require 'envjs/runtime'
+ 
+require 'nanotest'
+include Nanotest
+ 
+rt = Johnson::Runtime.new
+rt.extend(Envjs::Runtime)
+ 
+rt.evaluate('window.location = "http://example.com"')
+assert { 'Example Web Page' == rt.evaluate('window.document.title') }
+assert { 'Example Web Page' == rt.evaluate('this.document.title') }
+assert { 'Example Web Page' == rt.evaluate('document.title') }
+ 
+rt.evaluate('window.location = "http://montrealrb.org"')
+assert { 'Montreal.rb' == rt.evaluate('window.document.title') }
+
+# correct
+# assert { 'Montreal.rb' == rt.evaluate('this.document.title') }
+# buggy
+assert { 'Example Web Page' == rt.evaluate('this.document.title') }
+
+assert { 'Example Web Page' == rt.evaluate('document.title') }