rails/rails — pull request #16741 by robin850 (2014-08-29 12:09:45+00:00)
Title: Make test:isolated run without bundler for Action Mailer

Hello,

This pull request makes it possible to run Action Mailer tests in isolation without the `bundle exec` prefix since we were requiring gems before requiring abstract_unit.

We don't need the `gem` call thus and the `require_relative` since the test directory should be present in the load path when we run any test.

Have a nice day.