1 files changed, 64 insertions, 0 deletions
diff --git a/railties/test/application/asset_debugging_test.rb b/railties/test/application/asset_debugging_test.rb
new file mode 100644
index 0000000000..9a571fac3a
--- /dev/null
+++ b/railties/test/application/asset_debugging_test.rb
@@ -0,0 +1,64 @@
+require 'isolation/abstract_unit'
+require 'rack/test'
+
+module ApplicationTests
+  class AssetDebuggingTest < ActiveSupport::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
+        Rails.application.routes.draw do
+          get '/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 compile is off either if debug_assets param is provided" do
+      # config.assets.debug and config.assets.compile are false for production environment
+      ENV["RAILS_ENV"] = "production"
+      output = Dir.chdir(app_path){ `bundle exec rake assets:precompile --trace 2>&1` }
+      assert $?.success?, output
+      require "#{app_path}/config/environment"
+
+      class ::PostsController < ActionController::Base ; end
+
+      # the debug_assets params isn't used if compile is off
+      get '/posts?debug_assets=true'
+      assert_match(/<script src="\/assets\/application-([0-z]+)\.js"><\/script>/, last_response.body)
+      assert_no_match(/<script src="\/assets\/xmlhr-([0-z]+)\.js"><\/script>/, last_response.body)
+    end
+
+    test "assets aren't concatenated when compile is true is on and debug_assets params is true" do
+      add_to_env_config "production", "config.assets.compile = 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"><\/script>/, last_response.body)
+      assert_match(/<script src="\/assets\/xmlhr-([0-z]+)\.js\?body=1"><\/script>/, last_response.body)
+    end
+  end
+end