Clean up test app

test/support/isolated_unit.rb

@@ -46,6 +46,8 @@ require 'active_support/testing/isolation'
 
 module TestHelpers
   module Generation
+    module_function
+
     # Make a very basic app, without creating the whole directory structure.
     # Is faster and simpler than generating a Rails app in a temp directory
     def make_basic_app

test/support/rails_app.rb

@@ -1,27 +1,34 @@
-class ActiveModelSerializers::RailsApplication < Rails::Application
-  if Rails::VERSION::MAJOR >= 4
-    config.eager_load = false
-
+require 'support/isolated_unit'
+module ActiveModelSerializers
+  RailsApplication = TestHelpers::Generation.make_basic_app do |app|
+    app.configure do
       config.secret_key_base = 'abc123'
-
       config.active_support.test_order = :random
-
-    config.logger = Logger.new(nil)
-
       config.action_controller.perform_caching = true
       ActionController::Base.cache_store = :memory_store
+    end
 
-    Rails.application.routes.default_url_options = { host: 'example.com' }
+    app.routes.default_url_options = { host: 'example.com' }
   end
 end
-ActiveModelSerializers::RailsApplication.initialize!
 
-module TestHelper
 Routes = ActionDispatch::Routing::RouteSet.new
 Routes.draw do
   get ':controller(/:action(/:id))'
   get ':controller(/:action)'
 end
-
 ActionController::Base.send :include, Routes.url_helpers
+ActionController::TestCase.class_eval do
+  def setup
+    @routes = Routes
+  end
+
+  # For Rails5
+  # https://github.com/rails/rails/commit/ca83436d1b3b6cedd1eca2259f65661e69b01909#diff-b9bbf56e85d3fe1999f16317f2751e76L17
+  def assigns(key = nil)
+    warn "DEPRECATION: Calling 'assigns(#{key})' from #{caller[0]}"
+    assigns = {}.with_indifferent_access
+    @controller.view_assigns.each { |k, v| assigns.regular_writer(k, v) }
+    key.nil? ? assigns : assigns[key]
+  end
 end

test/support/test_case.rb

@@ -1,19 +0,0 @@
-ActionController::TestCase.class_eval do
-  def setup
-    @routes = TestHelper::Routes
-  end
-
-  # For Rails5
-  # https://github.com/rails/rails/commit/ca83436d1b3b6cedd1eca2259f65661e69b01909#diff-b9bbf56e85d3fe1999f16317f2751e76L17
-  def assigns(key = nil)
-    assigns = {}.with_indifferent_access
-    @controller.view_assigns.each { |k, v| assigns.regular_writer(k, v) }
-    key.nil? ? assigns : assigns[key]
-  end
-
-  # Rails5: Uncomment for debugging where the warnings come from
-  # def non_kwarg_request_warning
-  #   super
-  #   STDOUT.puts caller[2..3]
-  # end
-end

test/test_helper.rb

@@ -39,8 +39,6 @@ end
 
 require 'support/rails_app'
 
-require 'support/test_case'
-
 require 'support/serialization_testing'
 
 require 'support/rails5_shims'