* Sam Ruby <rubys@intertwingly.net> [130602 18:31]:
From what I can see in the shoulda-matchers tests, the test
application has a Gemfile.lock, which tries to pull in a version of
"i18n" that is not in the Debian archive.
For your tests to succeed, you'll need to Build-Depend on ruby-i18n,
and I *think* remove the Gemfile.lock.
My current stance on shipping packages that use Bundler to manage
their dependencies, is, that one cannot ever ship a Gemfile.lock in
a Debian package and expect things to work.