require 'isolation/abstract_unit' require 'rack/test' module ApplicationTests class MailerPreviewsTest < ActiveSupport::TestCase include ActiveSupport::Testing::Isolation include Rack::Test::Methods def setup build_app boot_rails end def teardown teardown_app end test "/rails/mailers is accessible in development" do app("development") get "/rails/mailers" assert_equal 200, last_response.status end test "/rails/mailers is not accessible in production" do app("production") get "/rails/mailers" assert_equal 404, last_response.status end test "mailer previews are loaded from the default preview_path" do mailer 'notifier', <<-RUBY class Notifier < ActionMailer::Base default from: "from@example.com" def foo mail to: "to@example.org" end end RUBY text_template 'notifier/foo', <<-RUBY Hello, World! RUBY mailer_preview 'notifier', <<-RUBY class NotifierPreview < ActionMailer::Preview def foo Notifier.foo end end RUBY app('development') get "/rails/mailers" assert_match '

Notifier

', last_response.body assert_match '
  • foo
  • ', last_response.body end test "mailer previews are loaded from a custom preview_path" do add_to_config "config.action_mailer.preview_path = '#{app_path}/lib/mailer_previews'" mailer 'notifier', <<-RUBY class Notifier < ActionMailer::Base default from: "from@example.com" def foo mail to: "to@example.org" end end RUBY text_template 'notifier/foo', <<-RUBY Hello, World! RUBY app_file 'lib/mailer_previews/notifier_preview.rb', <<-RUBY class NotifierPreview < ActionMailer::Preview def foo Notifier.foo end end RUBY app('development') get "/rails/mailers" assert_match '

    Notifier

    ', last_response.body assert_match '
  • foo
  • ', last_response.body end test "mailer previews are reloaded across requests" do app('development') get "/rails/mailers" assert_no_match '

    Notifier

    ', last_response.body mailer 'notifier', <<-RUBY class Notifier < ActionMailer::Base default from: "from@example.com" def foo mail to: "to@example.org" end end RUBY text_template 'notifier/foo', <<-RUBY Hello, World! RUBY mailer_preview 'notifier', <<-RUBY class NotifierPreview < ActionMailer::Preview def foo Notifier.foo end end RUBY get "/rails/mailers" assert_match '

    Notifier

    ', last_response.body remove_file 'test/mailers/previews/notifier_preview.rb' sleep(1) get "/rails/mailers" assert_no_match '

    Notifier

    ', last_response.body end test "mailer preview actions are added and removed" do mailer 'notifier', <<-RUBY class Notifier < ActionMailer::Base default from: "from@example.com" def foo mail to: "to@example.org" end end RUBY text_template 'notifier/foo', <<-RUBY Hello, World! RUBY mailer_preview 'notifier', <<-RUBY class NotifierPreview < ActionMailer::Preview def foo Notifier.foo end end RUBY app('development') get "/rails/mailers" assert_match '

    Notifier

    ', last_response.body assert_match '
  • foo
  • ', last_response.body assert_no_match '
  • bar
  • ', last_response.body mailer 'notifier', <<-RUBY class Notifier < ActionMailer::Base default from: "from@example.com" def foo mail to: "to@example.org" end def bar mail to: "to@example.net" end end RUBY text_template 'notifier/foo', <<-RUBY Hello, World! RUBY text_template 'notifier/bar', <<-RUBY Goodbye, World! RUBY mailer_preview 'notifier', <<-RUBY class NotifierPreview < ActionMailer::Preview def foo Notifier.foo end def bar Notifier.bar end end RUBY sleep(1) get "/rails/mailers" assert_match '

    Notifier

    ', last_response.body assert_match '
  • foo
  • ', last_response.body assert_match '
  • bar
  • ', last_response.body mailer 'notifier', <<-RUBY class Notifier < ActionMailer::Base default from: "from@example.com" def foo mail to: "to@example.org" end end RUBY remove_file 'app/views/notifier/bar.text.erb' mailer_preview 'notifier', <<-RUBY class NotifierPreview < ActionMailer::Preview def foo Notifier.foo end end RUBY sleep(1) get "/rails/mailers" assert_match '

    Notifier

    ', last_response.body assert_match '
  • foo
  • ', last_response.body assert_no_match '
  • bar
  • ', last_response.body end test "mailer preview not found" do app('development') get "/rails/mailers/notifier" assert last_response.not_found? assert_match "Mailer preview 'notifier' not found", last_response.body end test "mailer preview email not found" do mailer 'notifier', <<-RUBY class Notifier < ActionMailer::Base default from: "from@example.com" def foo mail to: "to@example.org" end end RUBY text_template 'notifier/foo', <<-RUBY Hello, World! RUBY mailer_preview 'notifier', <<-RUBY class NotifierPreview < ActionMailer::Preview def foo Notifier.foo end end RUBY app('development') get "/rails/mailers/notifier/bar" assert last_response.not_found? assert_match "Email 'bar' not found in NotifierPreview", last_response.body end test "mailer preview email part not found" do mailer 'notifier', <<-RUBY class Notifier < ActionMailer::Base default from: "from@example.com" def foo mail to: "to@example.org" end end RUBY text_template 'notifier/foo', <<-RUBY Hello, World! RUBY mailer_preview 'notifier', <<-RUBY class NotifierPreview < ActionMailer::Preview def foo Notifier.foo end end RUBY app('development') get "/rails/mailers/notifier/foo?part=text%2Fhtml" assert last_response.not_found? assert_match "Email part 'text/html' not found in NotifierPreview#foo", last_response.body end test "message header uses full display names" do mailer 'notifier', <<-RUBY class Notifier < ActionMailer::Base default from: "Ruby on Rails " def foo mail to: "Andrew White ", cc: "David Heinemeier Hansson " end end RUBY text_template 'notifier/foo', <<-RUBY Hello, World! RUBY mailer_preview 'notifier', <<-RUBY class NotifierPreview < ActionMailer::Preview def foo Notifier.foo end end RUBY app('development') get "/rails/mailers/notifier/foo" assert_equal 200, last_response.status assert_match "Ruby on Rails <core@rubyonrails.org>", last_response.body assert_match "Andrew White <andyw@pixeltrix.co.uk>", last_response.body assert_match "David Heinemeier Hansson <david@heinemeierhansson.com>", last_response.body end test "part menu selects correct option" do mailer 'notifier', <<-RUBY class Notifier < ActionMailer::Base default from: "from@example.com" def foo mail to: "to@example.org" end end RUBY html_template 'notifier/foo', <<-RUBY

    Hello, World!

    RUBY text_template 'notifier/foo', <<-RUBY Hello, World! RUBY mailer_preview 'notifier', <<-RUBY class NotifierPreview < ActionMailer::Preview def foo Notifier.foo end end RUBY app('development') get "/rails/mailers/notifier/foo.html" assert_equal 200, last_response.status assert_match '', last_response.body get "/rails/mailers/notifier/foo.txt" assert_equal 200, last_response.status assert_match '', last_response.body end private def build_app super app_file 'config/routes.rb', "Rails.application.routes.draw do; end" end def mailer(name, contents) app_file("app/mailers/#{name}.rb", contents) end def mailer_preview(name, contents) app_file("test/mailers/previews/#{name}_preview.rb", contents) end def html_template(name, contents) app_file("app/views/#{name}.html.erb", contents) end def text_template(name, contents) app_file("app/views/#{name}.text.erb", contents) end end end