1 files changed, 54 insertions, 0 deletions
diff --git a/activerecord/test/cases/associations/nested_has_many_through_associations_test.rb b/activerecord/test/cases/associations/nested_has_many_through_associations_test.rb
new file mode 100644
index 0000000000..a5d3f27702
--- /dev/null
+++ b/activerecord/test/cases/associations/nested_has_many_through_associations_test.rb
@@ -0,0 +1,54 @@
+require "cases/helper"
+require 'models/author'
+require 'models/post'
+require 'models/person'
+require 'models/reference'
+require 'models/job'
+require 'models/reader'
+require 'models/comment'
+require 'models/tag'
+require 'models/tagging'
+require 'models/owner'
+require 'models/pet'
+require 'models/toy'
+require 'models/contract'
+require 'models/company'
+require 'models/developer'
+require 'models/subscriber'
+require 'models/book'
+require 'models/subscription'
+
+class NestedHasManyThroughAssociationsTest < ActiveRecord::TestCase
+  fixtures :authors, :books, :posts, :subscriptions, :subscribers, :tags, :taggings
+
+  def test_has_many_through_a_has_many_through_association_on_source_reflection
+    author = authors(:david)
+    assert_equal [tags(:general), tags(:general)], author.tags
+  end
+
+  def test_has_many_through_a_has_many_through_association_on_through_reflection
+    author = authors(:david)
+    assert_equal [subscribers(:first), subscribers(:second), subscribers(:second)], author.subscribers
+  end
+
+  def test_distinct_has_many_through_a_has_many_through_association_on_source_reflection
+    author = authors(:david)
+    assert_equal [tags(:general)], author.distinct_tags
+  end
+
+  def test_distinct_has_many_through_a_has_many_through_association_on_through_reflection
+    author = authors(:david)
+    assert_equal [subscribers(:first), subscribers(:second)], author.distinct_subscribers
+  end
+  
+  def test_nested_has_many_through_with_a_table_referenced_multiple_times
+    author = authors(:bob)
+    assert_equal [posts(:misc_by_bob), posts(:misc_by_mary)], author.similar_posts.sort_by(&:id)
+  end
+  
+  def test_nested_has_many_through_as_a_join
+    # All authors with subscribers where one of the subscribers' nick is 'alterself'
+    authors = Author.joins(:subscribers).where('subscribers.nick' => 'alterself')
+    assert_equal [authors(:david)], authors
+  end
+end