Move asset debugging tests into a separate test case

Also:

- Refactor AssetDebuggingTest.
- Use the %r regexp syntax. That way we don't need to escape the /'s.

railties/test/application/asset_debugging_test.rb

@@ -0,0 +1,56 @@
+require 'isolation/abstract_unit'
+require 'rack/test'
+
+module ApplicationTests
+  class AssetDebuggingTest < Test::Unit::TestCase
+    include ActiveSupport::Testing::Isolation
+    include Rack::Test::Methods
+
+    def setup
+      build_app(:initializers => true)
+
+      app_file "app/assets/javascripts/application.js", "//= require_tree ."
+      app_file "app/assets/javascripts/xmlhr.js", "function f1() { alert(); }"
+      app_file "app/views/posts/index.html.erb", "<%= javascript_include_tag 'application' %>"
+
+      app_file "config/routes.rb", <<-RUBY
+        AppTemplate::Application.routes.draw do
+          match '/posts', :to => "posts#index"
+        end
+      RUBY
+
+      app_file "app/controllers/posts_controller.rb", <<-RUBY
+        class PostsController < ActionController::Base
+        end
+      RUBY
+
+      ENV["RAILS_ENV"] = "production"
+
+      boot_rails
+    end
+
+    def teardown
+      teardown_app
+    end
+
+    test "assets are concatenated when debug is off and allow_debugging is off either if debug_assets param is provided" do
+      # config.assets.debug and config.assets.allow_debugging are false for production environment
+      require "#{app_path}/config/environment"
+
+      # the debug_assets params isn't used if allow_debugging is off
+      get '/posts?debug_assets=true'
+      assert_match %r{<script src="/assets/application-([0-z]+)\.js" type="text/javascript"></script>}, last_response.body
+      assert_not_match %r{<script src="/assets/xmlhr-([0-z]+)\.js" type="text/javascript"></script>}, last_response.body
+    end
+
+    test "assets aren't concatened when allow_debugging is on and debug_assets params is true" do
+      app_file "config/initializers/allow_debugging.rb", "Rails.application.config.assets.allow_debugging = true"
+
+      require "#{app_path}/config/environment"
+
+      get '/posts?debug_assets=true'
+      assert_match %r{<script src="/assets/application-([0-z]+)\.js\?body=1" type="text/javascript"></script>}, last_response.body
+      assert_match %r{<script src="/assets/xmlhr-([0-z]+)\.js\?body=1" type="text/javascript"></script>}, last_response.body
+    end
+  end
+end

railties/test/application/assets_test.rb

@@ -135,47 +135,5 @@ module ApplicationTests
       assert_match "alert();", last_response.body
       assert_equal 200, last_response.status
     end
-
-    test "assets are concatenated when debug is off and allow_debugging is off either if debug_assets param is provided" do
-      app_with_assets_in_view
-
-      # config.assets.debug and config.assets.allow_debugging are false for production environment
-      ENV["RAILS_ENV"] = "production"
-      require "#{app_path}/config/environment"
-
-      class ::PostsController < ActionController::Base ; end
-
-      # the debug_assets params isn't used if allow_debugging is off
-      get '/posts?debug_assets=true'
-      assert_match /<script src="\/assets\/application-([0-z]+)\.js" type="text\/javascript"><\/script>/, last_response.body
-      assert_not_match /<script src="\/assets\/xmlhr-([0-z]+)\.js" type="text\/javascript"><\/script>/, last_response.body
-    end
-
-    test "assets aren't concatened when allow_debugging is on and debug_assets params is true" do
-      app_with_assets_in_view
-      app_file "config/initializers/allow_debugging.rb", "Rails.application.config.assets.allow_debugging = true"
-
-      ENV["RAILS_ENV"] = "production"
-      require "#{app_path}/config/environment"
-
-      class ::PostsController < ActionController::Base ; end
-
-      get '/posts?debug_assets=true'
-      assert_match /<script src="\/assets\/application-([0-z]+)\.js\?body=1" type="text\/javascript"><\/script>/, last_response.body
-      assert_match /<script src="\/assets\/xmlhr-([0-z]+)\.js\?body=1" type="text\/javascript"><\/script>/, last_response.body
-    end
-
-    private
-    def app_with_assets_in_view
-      app_file "app/assets/javascripts/application.js", "//= require_tree ."
-      app_file "app/assets/javascripts/xmlhr.js", "function f1() { alert(); }"
-      app_file "app/views/posts/index.html.erb", "<%= javascript_include_tag 'application' %>"
-
-      app_file "config/routes.rb", <<-RUBY
-        AppTemplate::Application.routes.draw do
-          match '/posts', :to => "posts#index"
-        end
-      RUBY
-    end
   end
 end