Previously, url helpers in integration tests ignored RAILS_RELATIVE_URL_ROOT, so
even though the app worked, test code would not use the relative_url_root
in url helpers.
when running a test like this:
$ RAILS_RELATIVE_URL_ROOT='/context' rake test
tests with code like this:
assert_equal "http://relfoo.com/context/foo", rel_foos_url
would fail like this:
<"http://relbar.com/context/foo"> expected but was <"http://relbar.com/foo">.
Tests pass, yay! :-)