test/test_bychar.rb in bychar-1.1.0 vs test/test_bychar.rb in bychar-1.2.1

@@ -1,5 +1,6 @@
 require 'helper'
+require 'stringio'
 
 class TestBychar < Test::Unit::TestCase
   def test_reads_once
     s = StringIO.new("This is a string")