mutex_test.rb in minitest-around-0.0.2

- old
+ new

@@ -1,6 +1,7 @@
 require 'minitest/autorun'
 require 'minitest/around'
+require 'thread'
 
 class MutexTest < MiniTest::Unit::TestCase
   def around(&block)
     Mutex.new.synchronize(&block)
   end