1 files changed, 27 insertions, 9 deletions
diff --git a/activerecord/test/cases/persistence_test.rb b/activerecord/test/cases/persistence_test.rb
index 9209672ac5..bc5ccd0fe9 100644
--- a/activerecord/test/cases/persistence_test.rb
+++ b/activerecord/test/cases/persistence_test.rb
@@ -1,4 +1,5 @@
 require "cases/helper"
+require 'models/aircraft'
 require 'models/post'
 require 'models/comment'
 require 'models/author'
@@ -234,19 +235,12 @@ class PersistenceTest < ActiveRecord::TestCase
   end
 
   def test_save_with_duping_of_destroyed_object
-    developer = Developer.create(name: "Kuldeep")
+    developer = Developer.first
     developer.destroy
     new_developer = developer.dup
     new_developer.save
     assert new_developer.persisted?
-  end
-
-  def test_dup_of_destroyed_object_is_not_destroyed
-    developer = Developer.create(name: "Kuldeep")
-    developer.destroy
-    new_developer = developer.dup
-    new_developer.save
-    assert_equal new_developer.destroyed?, false
+    assert_not new_developer.destroyed?
   end
 
   def test_create_many
@@ -836,4 +830,28 @@ class PersistenceTest < ActiveRecord::TestCase
     end
   end
 
+  def test_persist_inherited_class_with_different_table_name
+    minimalistic_aircrafts = Class.new(Minimalistic) do
+      self.table_name = "aircraft"
+    end
+
+    assert_difference "Aircraft.count", 1 do
+      aircraft = minimalistic_aircrafts.create(name: "Wright Flyer")
+      aircraft.name = "Wright Glider"
+      aircraft.save
+    end
+
+    assert_equal "Wright Glider", Aircraft.last.name
+  end
+
+  def test_instantiate_creates_a_new_instance
+    post = Post.instantiate("title" => "appropriate documentation", "type" => "SpecialPost")
+    assert_equal "appropriate documentation", post.title
+    assert_instance_of SpecialPost, post
+
+    # body was not initialized
+    assert_raises ActiveModel::MissingAttributeError do
+      post.body
+    end
+  end
 end