3 files changed, 9 insertions, 1 deletions
diff --git a/activerecord/test/models/author.rb b/activerecord/test/models/author.rb
index b52b643ad7..da7e4139b1 100644
--- a/activerecord/test/models/author.rb
+++ b/activerecord/test/models/author.rb
@@ -116,6 +116,7 @@ class Author < ActiveRecord::Base
   has_many :tags_with_primary_key, through: :posts
 
   has_many :books
+  has_many :published_books, class_name: "PublishedBook"
   has_many :unpublished_books, -> { where(status: [:proposed, :written]) }, class_name: "Book"
   has_many :subscriptions,        through: :books
   has_many :subscribers, -> { order("subscribers.nick") }, through: :subscriptions
diff --git a/activerecord/test/models/book.rb b/activerecord/test/models/book.rb
index afdda1a81e..43b82e6047 100644
--- a/activerecord/test/models/book.rb
+++ b/activerecord/test/models/book.rb
@@ -24,3 +24,9 @@ class Book < ActiveRecord::Base
     "do publish work..."
   end
 end
+
+class PublishedBook < ActiveRecord::Base
+  self.table_name = "books"
+
+  validates_uniqueness_of :isbn
+end
diff --git a/activerecord/test/models/ship.rb b/activerecord/test/models/ship.rb
index 7973219a79..6bab7a1eb9 100644
--- a/activerecord/test/models/ship.rb
+++ b/activerecord/test/models/ship.rb
@@ -27,7 +27,8 @@ class ShipWithoutNestedAttributes < ActiveRecord::Base
   has_many :prisoners, inverse_of: :ship, foreign_key: :ship_id
   has_many :parts, class_name: "ShipPart", foreign_key: :ship_id
 
-  validates :name, presence: true
+  validates :name, presence: true, if: -> { true }
+  validates :name, presence: true, if: -> { true }
 end
 
 class Prisoner < ActiveRecord::Base