Apologies if this is a dupe (did a quick search), but it looks like the ‘require’ line of the unit tests generated in Rails 2.1 are different than what is described in sec 13.2 (i.e.,
require 'test_helper' vs. ` require File.dirname(FILE) + ‘/../test_helper’ `).
As a result running the test per the book
in 13.2 fails. Looks like you need to throw a ` -Itest ` switch in on the command line to have it pick up the file.