redis_lock_test.rb

    lock = RedisLock.new(:client  => $stats_wolverine,
                         :name    => "My Lock",
                         :timeout => 10)

    shared_var = 1

    lock.atomically {
      shared_var += 1
      lock.atomically {
        shared_var += 1 # This one fails
      }
    }

    assert_equal 2, shared_var