1 files changed, 8 insertions, 0 deletions
diff --git a/activerecord/test/cases/relations_test.rb b/activerecord/test/cases/relations_test.rb
index 7a6d9be515..b205472cf5 100644
--- a/activerecord/test/cases/relations_test.rb
+++ b/activerecord/test/cases/relations_test.rb
@@ -481,6 +481,14 @@ class RelationTest < ActiveRecord::TestCase
     assert_equal Post.find(1).last_comment, post.last_comment
   end
 
+  def test_to_sql_on_eager_join
+    expected = assert_sql {
+      Post.eager_load(:last_comment).order('comments.id DESC').to_a
+    }.first
+    actual = Post.eager_load(:last_comment).order('comments.id DESC').to_sql
+    assert_equal expected, actual
+  end
+
   def test_loading_with_one_association_with_non_preload
     posts = Post.eager_load(:last_comment).order('comments.id DESC')
     post = posts.find { |p| p.id == 1 }