From: sto.mar@... Date: 2012-08-06T20:35:51+09:00 Subject: Re: unable to require 'test/unit' Am 05.08.2012 20:53, schrieb Ja Tse: > It works with "require_relative 'experiment01'", but I am sure why it > didn't work with just require. In case you just switched from 1.8 to 1.9: The behaviour of require changed in 1.9.2, since the path of the requiring file is no longer included in the $LOAD_PATH. Thus, to require a file in the same directory, you need to e.g. use either require './myfile' or require_relative 'myfile' See also --