tests/test_json_generate.rb in json-1.1.3 vs tests/test_json_generate.rb in json-1.1.4

@@ -1,12 +1,18 @@
+#!/usr/bin/env ruby
+# -*- coding: utf-8 -*-
+
 require 'test/unit'
-require 'json'
+case ENV['JSON']
+when 'pure' then require 'json/pure'
+when 'ext'  then require 'json/ext'
+else             require 'json'
+end
 
 class TC_JSONGenerate < Test::Unit::TestCase
   include JSON
 
   def setup
-    $KCODE = 'UTF8'
     @hash = {
       'a' => 2,
       'b' => 3.141,
       'c' => 'c',
       'd' => [ 1, "b", 3.14 ],