require "isolation/abstract_unit" module ApplicationTests class MiddlewareTest < ActiveSupport::TestCase include ActiveSupport::Testing::Isolation def setup build_app FileUtils.rm_rf "#{app_path}/config/environments" end def teardown teardown_app end def app @app ||= Rails.application end test "default middleware stack" do add_to_config "config.active_record.migration_error = :page_load" boot! assert_equal [ "Rack::Sendfile", "ActionDispatch::Static", "ActionDispatch::Executor", "ActiveSupport::Cache::Strategy::LocalCache", "Rack::Runtime", "Rack::MethodOverride", "ActionDispatch::RequestId", "Rails::Rack::Logger", # must come after Rack::MethodOverride to properly log overridden methods "ActionDispatch::ShowExceptions", "ActionDispatch::DebugExceptions", "ActionDispatch::RemoteIp", "ActionDispatch::Reloader", "ActionDispatch::Callbacks", "ActiveRecord::Migration::CheckPending", "ActionDispatch::Cookies", "ActionDispatch::Session::CookieStore", "ActionDispatch::Flash", "Rack::Head", "Rack::ConditionalGet", "Rack::ETag" ], middleware end test "api middleware stack" do add_to_config "config.api_only = true" boot! assert_equal [ "Rack::Sendfile", "ActionDispatch::Static", "ActionDispatch::Executor", "ActiveSupport::Cache::Strategy::LocalCache", "Rack::Runtime", "ActionDispatch::RequestId", "Rails::Rack::Logger", # must come after Rack::MethodOverride to properly log overridden methods "ActionDispatch::ShowExceptions", "ActionDispatch::DebugExceptions", "ActionDispatch::RemoteIp", "ActionDispatch::Reloader", "ActionDispatch::Callbacks", "Rack::Head", "Rack::ConditionalGet", "Rack::ETag" ], middleware end test "Rack::Cache is not included by default" do boot! assert_not_includes middleware, "Rack::Cache", "Rack::Cache is not included in the default stack unless you set config.action_dispatch.rack_cache" end test "Rack::Cache is present when action_dispatch.rack_cache is set" do add_to_config "config.action_dispatch.rack_cache = true" boot! assert_includes middleware, "Rack::Cache" end test "ActiveRecord::Migration::CheckPending is present when active_record.migration_error is set to :page_load" do add_to_config "config.active_record.migration_error = :page_load" boot! assert_includes middleware, "ActiveRecord::Migration::CheckPending" end test "ActionDispatch::SSL is present when force_ssl is set" do add_to_config "config.force_ssl = true" boot! assert_includes middleware, "ActionDispatch::SSL" end test "ActionDispatch::SSL is configured with options when given" do add_to_config "config.force_ssl = true" add_to_config "config.ssl_options = { redirect: { host: 'example.com' } }" boot! assert_equal [{ redirect: { host: "example.com" } }], Rails.application.middleware.first.args end test "removing Active Record omits its middleware" do use_frameworks [] boot! assert_not_includes middleware, "ActiveRecord::Migration::CheckPending" end test "includes executor" do boot! assert_includes middleware, "ActionDispatch::Executor" end test "does not include lock if cache_classes is set and so is eager_load" do add_to_config "config.cache_classes = true" add_to_config "config.eager_load = true" boot! assert_not_includes middleware, "Rack::Lock" end test "does not include lock if allow_concurrency is set to :unsafe" do add_to_config "config.allow_concurrency = :unsafe" boot! assert_not_includes middleware, "Rack::Lock" end test "includes lock if allow_concurrency is disabled" do add_to_config "config.allow_concurrency = false" boot! assert_includes middleware, "Rack::Lock" end test "removes static asset server if public_file_server.enabled is disabled" do add_to_config "config.public_file_server.enabled = false" boot! assert_not_includes middleware, "ActionDispatch::Static" end test "can delete a middleware from the stack" do add_to_config "config.middleware.delete ActionDispatch::Static" boot! assert_not_includes middleware, "ActionDispatch::Static" end test "can delete a middleware from the stack even if insert_before is added after delete" do add_to_config "config.middleware.delete Rack::Runtime" add_to_config "config.middleware.insert_before(Rack::Runtime, Rack::Config)" boot! assert_includes middleware, "Rack::Config" assert_not middleware.include?("Rack::Runtime") end test "can delete a middleware from the stack even if insert_after is added after delete" do add_to_config "config.middleware.delete Rack::Runtime" add_to_config "config.middleware.insert_after(Rack::Runtime, Rack::Config)" boot! assert_includes middleware, "Rack::Config" assert_not middleware.include?("Rack::Runtime") end test "includes exceptions middlewares even if action_dispatch.show_exceptions is disabled" do add_to_config "config.action_dispatch.show_exceptions = false" boot! assert_includes middleware, "ActionDispatch::ShowExceptions" assert_includes middleware, "ActionDispatch::DebugExceptions" end test "removes ActionDispatch::Reloader if cache_classes is true" do add_to_config "config.cache_classes = true" boot! assert_not_includes middleware, "ActionDispatch::Reloader" 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 Rack::Sendfile, Rack::Config" boot! assert_equal "Rack::Config", middleware.second end test "unshift middleware" do add_to_config "config.middleware.unshift Rack::Config" boot! assert_equal "Rack::Config", middleware.first end test "Rails.cache does not respond to middleware" do add_to_config "config.cache_store = :memory_store" boot! assert_equal "Rack::Runtime", middleware.fourth end test "Rails.cache does respond to middleware" do boot! assert_equal "Rack::Runtime", middleware.fifth end test "insert middleware before" do add_to_config "config.middleware.insert_before Rack::Sendfile, Rack::Config" boot! assert_equal "Rack::Config", middleware.first end test "can't change middleware after it's built" do boot! assert_raise RuntimeError do app.config.middleware.use Rack::Config end 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 plain: "" else render plain: "OMG" end end end etag = "W/" + "c00862d1c6c1cf7c1b49388306e7b3c1".inspect get "/" assert_equal 200, last_response.status assert_equal "OMG", last_response.body assert_equal "text/plain; 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" assert_equal 200, last_response.status assert_equal "", last_response.body assert_equal "text/plain; 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 test "ORIGINAL_FULLPATH is passed to env" do boot! env = ::Rack::MockRequest.env_for("/foo/?something") Rails.application.call(env) assert_equal "/foo/?something", env["ORIGINAL_FULLPATH"] end private def boot! require "#{app_path}/config/environment" end def middleware Rails.application.middleware.map(&:klass).map(&:name) end end end