Ensure that the :uniq option for has_many :through associations retains the order. #10463 [remvee]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@8376 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 6 insertions, 0 deletions

diff --git a/activerecord/test/associations/join_model_test.rb b/activerecord/test/associations/join_model_test.rb
index 631f7034f4..aaef40ebf1 100644
--- a/activerecord/test/associations/join_model_test.rb
+++ b/activerecord/test/associations/join_model_test.rb
@@ -539,6 +539,12 @@ class AssociationsJoinModelTest < Test::Unit::TestCase
   def test_has_many_through_has_many_with_sti
     assert_equal [comments(:does_it_hurt)], authors(:david).special_post_comments
   end
+  
+  def test_uniq_has_many_through_should_retain_order
+    comment_ids = authors(:david).comments.map(&:id)
+    assert_equal comment_ids.sort, authors(:david).ordered_uniq_comments.map(&:id)
+    assert_equal comment_ids.sort.reverse, authors(:david).ordered_uniq_comments_desc.map(&:id)
+  end
 
   private
     # create dynamic Post models to allow different dependency options