This commit restores the ability to assign cookies for testing via
@request.env['HTTP_COOKIE'] and @request.cookies, e.g:

    @request.env['HTTP_COOKIE'] = 'user_name=david'
    get :index
    assert_equal 'david', cookies[:user_name]

and

    @request.cookies[:user_name] = 'david'
    get :index
    assert_equal 'david', cookies[:user_name]

Assigning via cookies[] is the preferred method and will take precedence
over the other two methods. This is so that cookies set in controller
actions have precedence and are carried over between calls to get, post, etc.

 sprockets gem update to beta9

Test added for namedscope target.

Allow multiple sources in Sprockets helpers

Refactor Active Record test connection setup. Please see the RUNNING_UNIT_TESTS file for details, but essentially you can now configure things in test/config.yml. You can also run tests directly via the command line, e.g. ruby path/to/test.rb (no rake needed, uses default db connection from test/config.yml). This will help us fix the CI by enabling us to isolate the different Rails versions to different databases.

Force RAILS_ENV=development in rackup_test.rb. This fixes a problem on the CI server. For some reason the RAILS_ENV on the CI server is production, which means that the ActionDispatch::Static middleware is not used, and so the request in 'config.ru can be racked up' returns a 404 rather than a 200.

See http://weblog.rubyonrails.org/2011/6/2/news-from-the-documentation-front

Assigning cookies for test cases should now use cookies[], e.g:

  cookies[:email] = 'user@example.com'
  get :index
  assert_equal 'user@example.com', cookies[:email]

To clear the cookies, use clear, e.g:

  cookies.clear
  get :index
  assert_nil cookies[:email]

We now no longer write out HTTP_COOKIE and the cookie jar is
persistent between requests so if you need to manipulate the environment
for your test you need to do it before the cookie jar is created.

Double assignment of attributes on a collection association occurs fixed #1467

Fix creating an empty route on 1.8. Closes #1210

#drop_table accepts no options now.

Set reverse_order_value when asked to reverse_order().
Do the actual reversal in build_arel.

Require attr_internal before using in ActionView::Helpers

Don't add .rb in requires

Isolated PostgreSQL test into PostgreSQL folder

ActiveSupport::Dependencies now raises NameError if it finds an existing
constant in load_missing_constant. This better reflects the nature of
the error which is usually caused by calling constantize on a nested constant.

Closes #1423