1 files changed, 35 insertions, 4 deletions
diff --git a/railties/test/application/configuration_test.rb b/railties/test/application/configuration_test.rb
index 7193dfdef5..c1aa98e481 100644
--- a/railties/test/application/configuration_test.rb
+++ b/railties/test/application/configuration_test.rb
@@ -148,6 +148,15 @@ module ApplicationTests
       assert AppTemplate::Application.config.allow_concurrency
     end
 
+    test "initialize a threadsafe app" do
+      add_to_config <<-RUBY
+        config.threadsafe!
+      RUBY
+
+      require "#{app_path}/config/application"
+      assert AppTemplate::Application.initialize!
+    end
+
     test "asset_path defaults to nil for application" do
       require "#{app_path}/config/environment"
       assert_equal nil, AppTemplate::Application.config.asset_path
@@ -179,7 +188,7 @@ module ApplicationTests
 
       require "#{app_path}/config/environment"
 
-      assert !ActionController.autoload?(:Caching)
+      assert !ActionView.autoload?(:AssetPaths)
     end
 
     test "filter_parameters should be able to set via config.filter_parameters" do
@@ -374,9 +383,10 @@ module ApplicationTests
 
       require "#{app_path}/config/environment"
 
-      assert_equal ActiveModel::MassAssignmentSecurity::WhiteList,
-                   ActiveRecord::Base.active_authorizers[:default].class
-      assert_equal [], ActiveRecord::Base.active_authorizers[:default].to_a
+      klass = Class.new(ActiveRecord::Base)
+
+      assert_equal ActiveModel::MassAssignmentSecurity::WhiteList, klass.active_authorizers[:default].class
+      assert_equal [], klass.active_authorizers[:default].to_a
     end
 
     test "registers interceptors with ActionMailer" do
@@ -617,5 +627,26 @@ module ApplicationTests
       make_basic_app
       assert app.config.colorize_logging
     end
+
+    test "config.active_record.observers" do
+      add_to_config <<-RUBY
+        config.active_record.observers = :foo_observer
+      RUBY
+
+      app_file 'app/models/foo.rb', <<-RUBY
+        class Foo < ActiveRecord::Base
+        end
+      RUBY
+
+      app_file 'app/models/foo_observer.rb', <<-RUBY
+        class FooObserver < ActiveRecord::Observer
+        end
+      RUBY
+
+      require "#{app_path}/config/environment"
+
+      ActiveRecord::Base
+      assert defined?(FooObserver)
+    end
   end
 end