require 'isolation/abstract_unit' require 'stringio' module ApplicationTests class MiddlewareTest < Test::Unit::TestCase include ActiveSupport::Testing::Isolation def setup build_app boot_rails FileUtils.rm_rf "#{app_path}/config/environments" end def app @app ||= Rails.application end test "default middleware stack" do boot! assert_equal [ "ActionDispatch::Static", "Rack::Lock", "ActiveSupport::Cache::Strategy::LocalCache", "Rack::Runtime", "Rails::Rack::Logger", "ActionDispatch::ShowExceptions", "ActionDispatch::RemoteIp", "Rack::Sendfile", "ActionDispatch::Callbacks", "ActiveRecord::ConnectionAdapters::ConnectionManagement", "ActiveRecord::QueryCache", "ActionDispatch::Cookies", "ActionDispatch::Session::CookieStore", "ActionDispatch::Flash", "ActionDispatch::ParamsParser", "Rack::MethodOverride", "ActionDispatch::Head", "Rack::ConditionalGet", "Rack::ETag", "ActionDispatch::BestStandardsSupport" ], middleware end test "Rack::Cache is present when action_controller.perform_caching is set" do add_to_config "config.action_controller.perform_caching = true" boot! assert_equal "Rack::Cache", middleware.first end test "removing Active Record omits its middleware" do use_frameworks [] boot! assert !middleware.include?("ActiveRecord::ConnectionAdapters::ConnectionManagement") assert !middleware.include?("ActiveRecord::QueryCache") end test "removes lock if allow concurrency is set" do add_to_config "config.allow_concurrency = true" boot! assert !middleware.include?("Rack::Lock") end test "removes static asset server if serve_static_assets is disabled" do add_to_config "config.serve_static_assets = false" boot! assert !middleware.include?("ActionDispatch::Static") end test "can delete a middleware from the stack" do add_to_config "config.middleware.delete ActionDispatch::Static" boot! assert !middleware.include?("ActionDispatch::Static") end test "removes show exceptions if action_dispatch.show_exceptions is disabled" do add_to_config "config.action_dispatch.show_exceptions = false" boot! assert !middleware.include?("ActionDispatch::ShowExceptions") end test "use middleware" do use_frameworks [] add_to_config "config.middleware.use Rack::Config" boot! assert_equal "Rack::Config", middleware.last end test "insert middleware after" do add_to_config "config.middleware.insert_after ActionDispatch::Static, Rack::Config" boot! assert_equal "Rack::Config", middleware.second end test "RAILS_CACHE does not respond to middleware" do add_to_config "config.cache_store = :memory_store" boot! assert_equal "Rack::Runtime", middleware.third end test "RAILS_CACHE does respond to middleware" do boot! assert_equal "Rack::Runtime", middleware.fourth end test "insert middleware before" do add_to_config "config.middleware.insert_before ActionDispatch::Static, Rack::Config" boot! assert_equal "Rack::Config", middleware.first end # ConditionalGet + Etag test "conditional get + etag middlewares handle http caching based on body" do make_basic_app class ::OmgController < ActionController::Base def index if params[:nothing] render :text => "" else render :text => "OMG" end end end etag = "5af83e3196bf99f440f31f2e1a6c9afe".inspect get "/" assert_equal 200, last_response.status assert_equal "OMG", last_response.body assert_equal "text/html; charset=utf-8", last_response.headers["Content-Type"] assert_equal "max-age=0, private, must-revalidate", last_response.headers["Cache-Control"] assert_equal etag, last_response.headers["Etag"] get "/", {}, "HTTP_IF_NONE_MATCH" => etag assert_equal 304, last_response.status assert_equal "", last_response.body assert_equal nil, last_response.headers["Content-Type"] assert_equal "max-age=0, private, must-revalidate", last_response.headers["Cache-Control"] assert_equal etag, last_response.headers["Etag"] get "/?nothing=true" puts last_response.body assert_equal 200, last_response.status assert_equal "", last_response.body assert_equal "text/html; charset=utf-8", last_response.headers["Content-Type"] assert_equal "no-cache", last_response.headers["Cache-Control"] assert_equal nil, last_response.headers["Etag"] end # Show exceptions middleware test "show exceptions middleware filter backtrace before logging" do my_middleware = Struct.new(:app) do def call(env) raise "Failure" end end make_basic_app do |app| app.config.middleware.use my_middleware end stringio = StringIO.new Rails.logger = Logger.new(stringio) env = Rack::MockRequest.env_for("/") Rails.application.call(env) assert_no_match(/action_dispatch/, stringio.string) end private def boot! require "#{app_path}/config/environment" end def middleware AppTemplate::Application.middleware.map(&:klass).map(&:name) end end end