Add some tests for functionality in JoinAssociation which already exists but was previously untested

activerecord/test/cases/associations/cascaded_eager_loading_test.rb

@@ -16,7 +16,7 @@ class CascadedEagerLoadingTest < ActiveRecord::TestCase
     assert_equal 2, authors.size
     assert_equal 5, authors[0].posts.size
     assert_equal 1, authors[1].posts.size
-    assert_equal 9, authors[0].posts.collect{|post| post.comments.size }.inject(0){|sum,i| sum+i}
+    assert_equal 10, authors[0].posts.collect{|post| post.comments.size }.inject(0){|sum,i| sum+i}
   end
 
   def test_eager_association_loading_with_cascaded_two_levels_and_one_level
@@ -24,7 +24,7 @@ class CascadedEagerLoadingTest < ActiveRecord::TestCase
     assert_equal 2, authors.size
     assert_equal 5, authors[0].posts.size
     assert_equal 1, authors[1].posts.size
-    assert_equal 9, authors[0].posts.collect{|post| post.comments.size }.inject(0){|sum,i| sum+i}
+    assert_equal 10, authors[0].posts.collect{|post| post.comments.size }.inject(0){|sum,i| sum+i}
     assert_equal 1, authors[0].categorizations.size
     assert_equal 2, authors[1].categorizations.size
   end
@@ -35,7 +35,7 @@ class CascadedEagerLoadingTest < ActiveRecord::TestCase
     end
     authors = Author.joins(:posts).eager_load(:comments).where(:posts => {:taggings_count => 1}).all
     assert_equal 1, assert_no_queries { authors.size }
-    assert_equal 9, assert_no_queries { authors[0].comments.size }
+    assert_equal 10, assert_no_queries { authors[0].comments.size }
   end
 
   def test_eager_association_loading_grafts_stashed_associations_to_correct_parent
@@ -57,7 +57,7 @@ class CascadedEagerLoadingTest < ActiveRecord::TestCase
     assert_equal 2, authors.size
     assert_equal 5, authors[0].posts.size
     assert_equal 1, authors[1].posts.size
-    assert_equal 9, authors[0].posts.collect{|post| post.comments.size }.inject(0){|sum,i| sum+i}
+    assert_equal 10, authors[0].posts.collect{|post| post.comments.size }.inject(0){|sum,i| sum+i}
   end
 
   def test_eager_association_loading_with_cascaded_two_levels_and_self_table_reference

activerecord/test/cases/associations/eager_test.rb

@@ -174,7 +174,7 @@ class EagerAssociationTest < ActiveRecord::TestCase
 
   def test_eager_association_loading_with_belongs_to
     comments = Comment.find(:all, :include => :post)
-    assert_equal 10, comments.length
+    assert_equal 11, comments.length
     titles = comments.map { |c| c.post.title }
     assert titles.include?(posts(:welcome).title)
     assert titles.include?(posts(:sti_post_and_comments).title)
@@ -532,7 +532,7 @@ class EagerAssociationTest < ActiveRecord::TestCase
   def test_eager_has_many_with_association_inheritance
     post = Post.find(4, :include => [ :special_comments ])
     post.special_comments.each do |special_comment|
-      assert_equal "SpecialComment", special_comment.class.to_s
+      assert special_comment.is_a?(SpecialComment)
     end
   end
 
@@ -726,8 +726,8 @@ class EagerAssociationTest < ActiveRecord::TestCase
     posts = assert_queries(2) do
       Post.find(:all, :joins => :comments, :include => :author, :order => 'comments.id DESC')
     end
-    assert_equal posts(:eager_other), posts[0]
-    assert_equal authors(:mary), assert_no_queries { posts[0].author}
+    assert_equal posts(:eager_other), posts[1]
+    assert_equal authors(:mary), assert_no_queries { posts[1].author}
   end
 
   def test_eager_loading_with_conditions_on_joined_table_preloads

activerecord/test/cases/associations/inner_join_association_test.rb

@@ -4,9 +4,12 @@ require 'models/comment'
 require 'models/author'
 require 'models/category'
 require 'models/categorization'
+require 'models/tagging'
+require 'models/tag'
 
 class InnerJoinAssociationTest < ActiveRecord::TestCase
-  fixtures :authors, :posts, :comments, :categories, :categories_posts, :categorizations
+  fixtures :authors, :posts, :comments, :categories, :categories_posts, :categorizations,
+           :taggings, :tags
 
   def test_construct_finder_sql_applies_aliases_tables_on_association_conditions
     result = Author.joins(:thinking_posts, :welcome_posts).to_a
@@ -62,4 +65,23 @@ class InnerJoinAssociationTest < ActiveRecord::TestCase
     authors_with_welcoming_post_titles = Author.calculate(:count, 'authors.id', :joins => :posts, :distinct => true, :conditions => "posts.title like 'Welcome%'")
     assert_equal real_count, authors_with_welcoming_post_titles, "inner join and conditions should have only returned authors posting titles starting with 'Welcome'"
   end
+  
+  def test_find_with_sti_join
+    scope = Post.joins(:special_comments).where(:id => posts(:sti_comments).id)
+    
+    # The join should match SpecialComment and its subclasses only
+    assert scope.where("comments.type" => "Comment").empty?
+    assert !scope.where("comments.type" => "SpecialComment").empty?
+    assert !scope.where("comments.type" => "SubSpecialComment").empty?
+  end
+  
+  def test_find_with_conditions_on_reflection
+    assert !posts(:welcome).comments.empty?
+    assert Post.joins(:nonexistant_comments).where(:id => posts(:welcome).id).empty? # [sic!]
+  end
+  
+  def test_find_with_conditions_on_through_reflection
+    assert !posts(:welcome).tags.empty?
+    assert Post.joins(:misc_tags).where(:id => posts(:welcome).id).empty?
+  end
 end

activerecord/test/cases/associations/join_model_test.rb

@@ -406,7 +406,7 @@ class AssociationsJoinModelTest < ActiveRecord::TestCase
     author = Author.find :first, :conditions => ['name = ?', 'David'], :include => :comments, :order => 'comments.id'
     SpecialComment.new; VerySpecialComment.new
     assert_no_queries do
-      assert_equal [1,2,3,5,6,7,8,9,10], author.comments.collect(&:id)
+      assert_equal [1,2,3,5,6,7,8,9,10,12], author.comments.collect(&:id)
     end
   end
 
@@ -508,7 +508,7 @@ class AssociationsJoinModelTest < ActiveRecord::TestCase
 
   def test_has_many_through_collection_size_doesnt_load_target_if_not_loaded
     author = authors(:david)
-    assert_equal 9, author.comments.size
+    assert_equal 10, author.comments.size
     assert !author.comments.loaded?
   end
 

activerecord/test/cases/finder_test.rb

@@ -259,7 +259,7 @@ class FinderTest < ActiveRecord::TestCase
   end
 
   def test_find_on_association_proxy_conditions
-    assert_equal [1, 2, 3, 5, 6, 7, 8, 9, 10], Comment.find_all_by_post_id(authors(:david).posts).map(&:id).sort
+    assert_equal [1, 2, 3, 5, 6, 7, 8, 9, 10, 12], Comment.find_all_by_post_id(authors(:david).posts).map(&:id).sort
   end
 
   def test_find_on_hash_conditions_with_range

activerecord/test/fixtures/comments.yml

@@ -57,3 +57,9 @@ eager_other_comment1:
   post_id: 7
   body: go crazy
   type: SpecialComment
+
+sub_special_comment:
+  id: 12
+  post_id: 4
+  body: Sub special comment
+  type: SubSpecialComment

activerecord/test/models/comment.rb

@@ -23,6 +23,9 @@ class SpecialComment < Comment
   end
 end
 
+class SubSpecialComment < SpecialComment
+end
+
 class VerySpecialComment < Comment
   def self.what_are_you
     'a very special comment...'