Missed svn adds for [8042]. References rails#6466.

git-svn-id: http://svn-commit.rubyonrails.org/rails/branches/1-2-stable@8044 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

activerecord/test/fixtures/book.rb

@@ -0,0 +1,4 @@
+class Book < ActiveRecord::Base
+  has_many :citations, :foreign_key => 'book1_id'
+  has_many :references, :through => :citations, :source => :reference_of, :uniq => true
+end

activerecord/test/fixtures/books.yml

@@ -0,0 +1,7 @@
+awdr:
+  id: 1
+  name: "Agile Web Development with Rails"
+
+rfr:
+  id: 2
+  name: "Ruby for Rails"

activerecord/test/fixtures/citation.rb

@@ -0,0 +1,6 @@
+class Citation < ActiveRecord::Base
+  belongs_to :reference_of, :class_name => "Book", :foreign_key => :book2_id
+
+  belongs_to :book1, :class_name => "Book", :foreign_key => :book1_id
+  belongs_to :book2, :class_name => "Book", :foreign_key => :book2_id
+end