validates_uniqueness_of behaves well with single-table inheritance. Closes #3833.

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@7787 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 27 insertions, 0 deletions

diff --git a/activerecord/test/validations_test.rb b/activerecord/test/validations_test.rb
index 4b91d86b18..49fc30eff7 100755
--- a/activerecord/test/validations_test.rb
+++ b/activerecord/test/validations_test.rb
@@ -21,6 +21,18 @@ class ProtectedPerson < ActiveRecord::Base
   attr_protected :first_name
 end
 
+class UniqueReply < Reply
+  validates_uniqueness_of :content, :scope => 'parent_id'
+end
+
+class SillyUniqueReply < UniqueReply
+end
+
+class Topic < ActiveRecord::Base
+  has_many :unique_replies, :dependent => :destroy, :foreign_key => "parent_id"
+  has_many :silly_unique_replies, :dependent => :destroy, :foreign_key => "parent_id"
+end
+
 class ValidationsTest < Test::Unit::TestCase
   fixtures :topics, :developers
 
@@ -320,6 +332,21 @@ class ValidationsTest < Test::Unit::TestCase
     assert r3.valid?, "Saving r3"
   end
 
+  def test_validate_uniqueness_scoped_to_defining_class
+    t = Topic.create("title" => "What, me worry?")
+
+    r1 = t.unique_replies.create "title" => "r1", "content" => "a barrel of fun"
+    assert r1.valid?, "Saving r1"
+
+    r2 = t.silly_unique_replies.create "title" => "r2", "content" => "a barrel of fun"
+    assert !r2.valid?, "Saving r2"
+
+    # Should succeed as validates_uniqueness_of only applies to
+    # UniqueReply and it's subclasses
+    r3 = t.replies.create "title" => "r2", "content" => "a barrel of fun"
+    assert r3.valid?, "Saving r3"
+  end
+
   def test_validate_uniqueness_with_scope_array
     Reply.validates_uniqueness_of(:author_name, :scope => [:author_email_address, :parent_id])