More tests deep including through habtm

fixes #3183

1 files changed, 7 insertions, 0 deletions

diff --git a/activerecord/test/cases/associations/eager_test.rb b/activerecord/test/cases/associations/eager_test.rb
index 1dc71ac4cc..3d759e64f8 100644
--- a/activerecord/test/cases/associations/eager_test.rb
+++ b/activerecord/test/cases/associations/eager_test.rb
@@ -1095,4 +1095,11 @@ class EagerAssociationTest < ActiveRecord::TestCase
       Post.includes(:comments).order(nil).where(:comments => {:body => "Thank you for the welcome"}).first
     end
   end
+
+  def test_deep_including_through_habtm
+    posts = Post.find(:all, :include => {:categories => :categorizations}, :order => "posts.id")
+    assert_no_queries { assert_equal 2, posts[0].categories[0].categorizations.length }
+    assert_no_queries { assert_equal 1, posts[0].categories[1].categorizations.length }
+    assert_no_queries { assert_equal 2, posts[1].categories[0].categorizations.length }
+  end
 end