Introduce the Dummy. (#70)

51 files changed, 668 insertions, 73 deletions

diff --git a/test/controllers/direct_uploads_controller_test.rb b/test/controllers/direct_uploads_controller_test.rb
index 8c88befe6d..f15fcff314 100644
--- a/test/controllers/direct_uploads_controller_test.rb
+++ b/test/controllers/direct_uploads_controller_test.rb
@@ -1,14 +1,9 @@
 require "test_helper"
 require "database/setup"
 
-require "active_storage/direct_uploads_controller"
-
 if SERVICE_CONFIGURATIONS[:s3]
-  class ActiveStorage::S3DirectUploadsControllerTest < ActionController::TestCase
+  class ActiveStorage::S3DirectUploadsControllerTest < ActionDispatch::IntegrationTest
     setup do
-      @routes = Routes
-      @controller = ActiveStorage::DirectUploadsController.new
-
       @old_service = ActiveStorage::Blob.service
       ActiveStorage::Blob.service = ActiveStorage::Service.configure(:s3, SERVICE_CONFIGURATIONS)
     end
@@ -18,10 +13,10 @@ if SERVICE_CONFIGURATIONS[:s3]
     end
 
     test "creating new direct upload" do
-      post :create, params: { blob: {
-          filename: "hello.txt", byte_size: 6, checksum: Digest::MD5.base64digest("Hello"), content_type: "text/plain" } }
+      post rails_direct_uploads_url, params: { blob: {
+        filename: "hello.txt", byte_size: 6, checksum: Digest::MD5.base64digest("Hello"), content_type: "text/plain" } }
 
-      JSON.parse(@response.body).tap do |details|
+      response.parsed_body.tap do |details|
         assert_match(/#{SERVICE_CONFIGURATIONS[:s3][:bucket]}\.s3.(\S+)?amazonaws\.com/, details["upload_to_url"])
         assert_equal "hello.txt", ActiveStorage::Blob.find_signed(details["signed_blob_id"]).filename.to_s
       end
@@ -32,10 +27,8 @@ else
 end
 
 if SERVICE_CONFIGURATIONS[:gcs]
-  class ActiveStorage::GCSDirectUploadsControllerTest < ActionController::TestCase
+  class ActiveStorage::GCSDirectUploadsControllerTest < ActionDispatch::IntegrationTest
     setup do
-      @routes = Routes
-      @controller = ActiveStorage::DirectUploadsController.new
       @config = SERVICE_CONFIGURATIONS[:gcs]
 
       @old_service = ActiveStorage::Blob.service
@@ -47,10 +40,10 @@ if SERVICE_CONFIGURATIONS[:gcs]
     end
 
     test "creating new direct upload" do
-      post :create, params: { blob: {
-          filename: "hello.txt", byte_size: 6, checksum: Digest::MD5.base64digest("Hello"), content_type: "text/plain" } }
+      post rails_direct_uploads_url, params: { blob: {
+        filename: "hello.txt", byte_size: 6, checksum: Digest::MD5.base64digest("Hello"), content_type: "text/plain" } }
 
-      JSON.parse(@response.body).tap do |details|
+      @response.parsed_body.tap do |details|
         assert_match %r{storage\.googleapis\.com/#{@config[:bucket]}}, details["upload_to_url"]
         assert_equal "hello.txt", ActiveStorage::Blob.find_signed(details["signed_blob_id"]).filename.to_s
       end
@@ -60,17 +53,12 @@ else
   puts "Skipping GCS Direct Upload tests because no GCS configuration was supplied"
 end
 
-class ActiveStorage::DiskDirectUploadsControllerTest < ActionController::TestCase
-  setup do
-    @routes = Routes
-    @controller = ActiveStorage::DirectUploadsController.new
-  end
-
+class ActiveStorage::DiskDirectUploadsControllerTest < ActionDispatch::IntegrationTest
   test "creating new direct upload" do
-    post :create, params: { blob: {
-        filename: "hello.txt", byte_size: 6, checksum: Digest::MD5.base64digest("Hello"), content_type: "text/plain" } }
+    post rails_direct_uploads_url, params: { blob: {
+      filename: "hello.txt", byte_size: 6, checksum: Digest::MD5.base64digest("Hello"), content_type: "text/plain" } }
 
-    JSON.parse(@response.body).tap do |details|
+    @response.parsed_body.tap do |details|
       assert_match /rails\/active_storage\/disk/, details["upload_to_url"]
       assert_equal "hello.txt", ActiveStorage::Blob.find_signed(details["signed_blob_id"]).filename.to_s
     end
diff --git a/test/controllers/disk_controller_test.rb b/test/controllers/disk_controller_test.rb
index a1542b0784..c79cc97423 100644
--- a/test/controllers/disk_controller_test.rb
+++ b/test/controllers/disk_controller_test.rb
@@ -1,34 +1,37 @@
 require "test_helper"
 require "database/setup"
 
-require "active_storage/disk_controller"
-
-class ActiveStorage::DiskControllerTest < ActionController::TestCase
-  setup do
-    @routes = Routes
-    @controller = ActiveStorage::DiskController.new
-  end
-
+class ActiveStorage::DiskControllerTest < ActionDispatch::IntegrationTest
   test "showing blob inline" do
     blob = create_blob
 
-    get :show, params: { filename: blob.filename, encoded_key: ActiveStorage.verifier.generate(blob.key, expires_in: 5.minutes, purpose: :blob_key) }
-    assert_equal "inline; filename=\"#{blob.filename}\"", @response.headers["Content-Disposition"]
+    get rails_disk_service_url(
+      filename: "hello.txt",
+      content_type: blob.content_type,
+      encoded_key: ActiveStorage.verifier.generate(blob.key, expires_in: 5.minutes, purpose: :blob_key)
+    )
+
+    assert_equal "inline; filename=\"#{blob.filename.base}\"", @response.headers["Content-Disposition"]
     assert_equal "text/plain", @response.headers["Content-Type"]
   end
 
-  test "showing blob as attachment" do
+  test "sending blob as attachment" do
     blob = create_blob
 
-    get :show, params: { filename: blob.filename, encoded_key: ActiveStorage.verifier.generate(blob.key, expires_in: 5.minutes, purpose: :blob_key), disposition: :attachment }
-    assert_equal "attachment; filename=\"#{blob.filename}\"", @response.headers["Content-Disposition"]
+    get rails_disk_service_url(
+      filename: blob.filename,
+      content_type: blob.content_type,
+      encoded_key: ActiveStorage.verifier.generate(blob.key, expires_in: 5.minutes, purpose: :blob_key),
+      disposition: :attachment
+    )
+
+    assert_equal "attachment; filename=\"#{blob.filename.base}\"", @response.headers["Content-Disposition"]
     assert_equal "text/plain", @response.headers["Content-Type"]
   end
 
   test "directly uploading blob with integrity" do
     data = "Something else entirely!"
     blob = create_blob_before_direct_upload byte_size: data.size, checksum: Digest::MD5.base64digest(data)
-
     token = ActiveStorage.verifier.generate(
       {
         key: blob.key,
@@ -40,9 +43,8 @@ class ActiveStorage::DiskControllerTest < ActionController::TestCase
       purpose: :blob_token
     )
 
-    @request.content_type = "text/plain"
+    put update_rails_disk_service_url(encoded_token: token), params: data, headers: { "Content-Type" => "text/plain" }
 
-    put :update, body: data, params: { encoded_token: token }
     assert_response :no_content
     assert_equal data, blob.download
   end
@@ -62,9 +64,8 @@ class ActiveStorage::DiskControllerTest < ActionController::TestCase
       purpose: :blob_token
     )
 
-    @request.content_type = "text/plain"
+    put update_rails_disk_service_url(encoded_token: token), params: { body: data }
 
-    put :update, body: data, params: { encoded_token: token }
     assert_response :unprocessable_entity
     assert_not blob.service.exist?(blob.key)
   end
diff --git a/test/controllers/variants_controller_test.rb b/test/controllers/variants_controller_test.rb
index ec8103718b..fa8d15977d 100644
--- a/test/controllers/variants_controller_test.rb
+++ b/test/controllers/variants_controller_test.rb
@@ -1,23 +1,18 @@
 require "test_helper"
 require "database/setup"
 
-require "active_storage/variants_controller"
-
-class ActiveStorage::VariantsControllerTest < ActionController::TestCase
+class ActiveStorage::VariantsControllerTest < ActionDispatch::IntegrationTest
   setup do
-    @routes = Routes
-    @controller = ActiveStorage::VariantsController.new
-
     @blob = create_image_blob filename: "racecar.jpg"
   end
 
   test "showing variant inline" do
-    get :show, params: {
+    get rails_blob_variation_url(
       filename: @blob.filename,
       signed_blob_id: @blob.signed_id,
-      variation_key: ActiveStorage::Variation.encode(resize: "100x100") }
+      variation_key: ActiveStorage::Variation.encode(resize: "100x100"))
 
-    assert_redirected_to /racecar.jpg\?disposition=inline/
+    assert_redirected_to /racecar.jpg\?.*disposition=inline/
 
     image = read_image_variant(@blob.variant(resize: "100x100"))
     assert_equal 100, image.width
diff --git a/test/dummy/Rakefile b/test/dummy/Rakefile
new file mode 100644
index 0000000000..ed646b6f55
--- /dev/null
+++ b/test/dummy/Rakefile
@@ -0,0 +1,3 @@
+require_relative 'config/application'
+
+Rails.application.load_tasks
diff --git a/test/dummy/app/assets/config/manifest.js b/test/dummy/app/assets/config/manifest.js
new file mode 100644
index 0000000000..a8adebe722
--- /dev/null
+++ b/test/dummy/app/assets/config/manifest.js
@@ -0,0 +1,5 @@
+
+//= link_tree ../images
+//= link_directory ../javascripts .js
+//= link_directory ../stylesheets .css
+//= link active_storage_manifest.js
diff --git a/test/dummy/app/assets/images/.keep b/test/dummy/app/assets/images/.keep
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/test/dummy/app/assets/images/.keep
diff --git a/test/dummy/app/assets/javascripts/application.js b/test/dummy/app/assets/javascripts/application.js
new file mode 100644
index 0000000000..e54c6461cc
--- /dev/null
+++ b/test/dummy/app/assets/javascripts/application.js
@@ -0,0 +1,13 @@
+// This is a manifest file that'll be compiled into application.js, which will include all the files
+// listed below.
+//
+// Any JavaScript/Coffee file within this directory, lib/assets/javascripts, vendor/assets/javascripts,
+// or any plugin's vendor/assets/javascripts directory can be referenced here using a relative path.
+//
+// It's not advisable to add code directly here, but if you do, it'll appear at the bottom of the
+// compiled file. JavaScript code in this file should be added after the last require_* statement.
+//
+// Read Sprockets README (https://github.com/rails/sprockets#sprockets-directives) for details
+// about supported directives.
+//
+//= require_tree .
diff --git a/test/dummy/app/assets/stylesheets/application.css b/test/dummy/app/assets/stylesheets/application.css
new file mode 100644
index 0000000000..0ebd7fe829
--- /dev/null
+++ b/test/dummy/app/assets/stylesheets/application.css
@@ -0,0 +1,15 @@
+/*
+ * This is a manifest file that'll be compiled into application.css, which will include all the files
+ * listed below.
+ *
+ * Any CSS and SCSS file within this directory, lib/assets/stylesheets, vendor/assets/stylesheets,
+ * or any plugin's vendor/assets/stylesheets directory can be referenced here using a relative path.
+ *
+ * You're free to add application-wide styles to this file and they'll appear at the bottom of the
+ * compiled file so the styles you add here take precedence over styles defined in any other CSS/SCSS
+ * files in this directory. Styles in this file should be added after the last require_* statement.
+ * It is generally better to create a new file per style scope.
+ *
+ *= require_tree .
+ *= require_self
+ */
diff --git a/test/dummy/app/controllers/application_controller.rb b/test/dummy/app/controllers/application_controller.rb
new file mode 100644
index 0000000000..1c07694e9d
--- /dev/null
+++ b/test/dummy/app/controllers/application_controller.rb
@@ -0,0 +1,3 @@
+class ApplicationController < ActionController::Base
+  protect_from_forgery with: :exception
+end
diff --git a/test/dummy/app/controllers/concerns/.keep b/test/dummy/app/controllers/concerns/.keep
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/test/dummy/app/controllers/concerns/.keep
diff --git a/test/dummy/app/helpers/application_helper.rb b/test/dummy/app/helpers/application_helper.rb
new file mode 100644
index 0000000000..de6be7945c
--- /dev/null
+++ b/test/dummy/app/helpers/application_helper.rb
@@ -0,0 +1,2 @@
+module ApplicationHelper
+end
diff --git a/test/dummy/app/jobs/application_job.rb b/test/dummy/app/jobs/application_job.rb
new file mode 100644
index 0000000000..a009ace51c
--- /dev/null
+++ b/test/dummy/app/jobs/application_job.rb
@@ -0,0 +1,2 @@
+class ApplicationJob < ActiveJob::Base
+end
diff --git a/test/dummy/app/models/application_record.rb b/test/dummy/app/models/application_record.rb
new file mode 100644
index 0000000000..10a4cba84d
--- /dev/null
+++ b/test/dummy/app/models/application_record.rb
@@ -0,0 +1,3 @@
+class ApplicationRecord < ActiveRecord::Base
+  self.abstract_class = true
+end
diff --git a/test/dummy/app/models/concerns/.keep b/test/dummy/app/models/concerns/.keep
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/test/dummy/app/models/concerns/.keep
diff --git a/test/dummy/app/views/layouts/application.html.erb b/test/dummy/app/views/layouts/application.html.erb
new file mode 100644
index 0000000000..a6eb0174b7
--- /dev/null
+++ b/test/dummy/app/views/layouts/application.html.erb
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>Dummy</title>
+    <%= csrf_meta_tags %>
+
+    <%= stylesheet_link_tag    'application', media: 'all' %>
+    <%= javascript_include_tag 'application' %>
+  </head>
+
+  <body>
+    <%= yield %>
+  </body>
+</html>
diff --git a/test/dummy/bin/bundle b/test/dummy/bin/bundle
new file mode 100755
index 0000000000..66e9889e8b
--- /dev/null
+++ b/test/dummy/bin/bundle
@@ -0,0 +1,3 @@
+#!/usr/bin/env ruby
+ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../Gemfile', __FILE__)
+load Gem.bin_path('bundler', 'bundle')
diff --git a/test/dummy/bin/rails b/test/dummy/bin/rails
new file mode 100755
index 0000000000..0739660237
--- /dev/null
+++ b/test/dummy/bin/rails
@@ -0,0 +1,4 @@
+#!/usr/bin/env ruby
+APP_PATH = File.expand_path('../config/application', __dir__)
+require_relative '../config/boot'
+require 'rails/commands'
diff --git a/test/dummy/bin/rake b/test/dummy/bin/rake
new file mode 100755
index 0000000000..17240489f6
--- /dev/null
+++ b/test/dummy/bin/rake
@@ -0,0 +1,4 @@
+#!/usr/bin/env ruby
+require_relative '../config/boot'
+require 'rake'
+Rake.application.run
diff --git a/test/dummy/bin/yarn b/test/dummy/bin/yarn
new file mode 100755
index 0000000000..c2bacef836
--- /dev/null
+++ b/test/dummy/bin/yarn
@@ -0,0 +1,11 @@
+#!/usr/bin/env ruby
+VENDOR_PATH = File.expand_path('..', __dir__)
+Dir.chdir(VENDOR_PATH) do
+  begin
+    exec "yarnpkg #{ARGV.join(" ")}"
+  rescue Errno::ENOENT
+    $stderr.puts "Yarn executable was not detected in the system."
+    $stderr.puts "Download Yarn at https://yarnpkg.com/en/docs/install"
+    exit 1
+  end
+end
diff --git a/test/dummy/config.ru b/test/dummy/config.ru
new file mode 100644
index 0000000000..f7ba0b527b
--- /dev/null
+++ b/test/dummy/config.ru
@@ -0,0 +1,5 @@
+# This file is used by Rack-based servers to start the application.
+
+require_relative 'config/environment'
+
+run Rails.application
diff --git a/test/dummy/config/application.rb b/test/dummy/config/application.rb
new file mode 100644
index 0000000000..03bf7b050d
--- /dev/null
+++ b/test/dummy/config/application.rb
@@ -0,0 +1,25 @@
+require_relative 'boot'
+
+require "rails"
+require "active_model/railtie"
+require "active_job/railtie"
+require "active_record/railtie"
+require "action_controller/railtie"
+require "action_view/railtie"
+require "sprockets/railtie"
+#require "action_mailer/railtie"
+#require "rails/test_unit/railtie"
+#require "action_cable/engine"
+
+
+Bundler.require(*Rails.groups)
+require "active_storage"
+
+module Dummy
+  class Application < Rails::Application
+    config.load_defaults 5.1
+
+    config.active_storage.service = :local
+  end
+end
+
diff --git a/test/dummy/config/boot.rb b/test/dummy/config/boot.rb
new file mode 100644
index 0000000000..c9aef85d40
--- /dev/null
+++ b/test/dummy/config/boot.rb
@@ -0,0 +1,5 @@
+# Set up gems listed in the Gemfile.
+ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../../Gemfile', __dir__)
+
+require 'bundler/setup' if File.exist?(ENV['BUNDLE_GEMFILE'])
+$LOAD_PATH.unshift File.expand_path('../../../lib', __dir__)
diff --git a/test/dummy/config/database.yml b/test/dummy/config/database.yml
new file mode 100644
index 0000000000..0d02f24980
--- /dev/null
+++ b/test/dummy/config/database.yml
@@ -0,0 +1,25 @@
+# SQLite version 3.x
+#   gem install sqlite3
+#
+#   Ensure the SQLite 3 gem is defined in your Gemfile
+#   gem 'sqlite3'
+#
+default: &default
+  adapter: sqlite3
+  pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
+  timeout: 5000
+
+development:
+  <<: *default
+  database: db/development.sqlite3
+
+# Warning: The database defined as "test" will be erased and
+# re-generated from your development database when you run "rake".
+# Do not set this db to the same as development or production.
+test:
+  <<: *default
+  database: db/test.sqlite3
+
+production:
+  <<: *default
+  database: db/production.sqlite3
diff --git a/test/dummy/config/environment.rb b/test/dummy/config/environment.rb
new file mode 100644
index 0000000000..426333bb46
--- /dev/null
+++ b/test/dummy/config/environment.rb
@@ -0,0 +1,5 @@
+# Load the Rails application.
+require_relative 'application'
+
+# Initialize the Rails application.
+Rails.application.initialize!
diff --git a/test/dummy/config/environments/development.rb b/test/dummy/config/environments/development.rb
new file mode 100644
index 0000000000..503375dede
--- /dev/null
+++ b/test/dummy/config/environments/development.rb
@@ -0,0 +1,49 @@
+Rails.application.configure do
+  # Settings specified here will take precedence over those in config/application.rb.
+
+  # In the development environment your application's code is reloaded on
+  # every request. This slows down response time but is perfect for development
+  # since you don't have to restart the web server when you make code changes.
+  config.cache_classes = false
+
+  # Do not eager load code on boot.
+  config.eager_load = false
+
+  # Show full error reports.
+  config.consider_all_requests_local = true
+
+  # Enable/disable caching. By default caching is disabled.
+  if Rails.root.join('tmp/caching-dev.txt').exist?
+    config.action_controller.perform_caching = true
+
+    config.cache_store = :memory_store
+    config.public_file_server.headers = {
+      'Cache-Control' => "public, max-age=#{2.days.seconds.to_i}"
+    }
+  else
+    config.action_controller.perform_caching = false
+
+    config.cache_store = :null_store
+  end
+
+  # Print deprecation notices to the Rails logger.
+  config.active_support.deprecation = :log
+
+  # Raise an error on page load if there are pending migrations.
+  config.active_record.migration_error = :page_load
+
+  # Debug mode disables concatenation and preprocessing of assets.
+  # This option may cause significant delays in view rendering with a large
+  # number of complex assets.
+  config.assets.debug = true
+
+  # Suppress logger output for asset requests.
+  config.assets.quiet = true
+
+  # Raises error for missing translations
+  # config.action_view.raise_on_missing_translations = true
+
+  # Use an evented file watcher to asynchronously detect changes in source code,
+  # routes, locales, etc. This feature depends on the listen gem.
+  # config.file_watcher = ActiveSupport::EventedFileUpdateChecker
+end
diff --git a/test/dummy/config/environments/production.rb b/test/dummy/config/environments/production.rb
new file mode 100644
index 0000000000..35a30e084a
--- /dev/null
+++ b/test/dummy/config/environments/production.rb
@@ -0,0 +1,82 @@
+Rails.application.configure do
+  # Settings specified here will take precedence over those in config/application.rb.
+
+  # Code is not reloaded between requests.
+  config.cache_classes = true
+
+  # Eager load code on boot. This eager loads most of Rails and
+  # your application in memory, allowing both threaded web servers
+  # and those relying on copy on write to perform better.
+  # Rake tasks automatically ignore this option for performance.
+  config.eager_load = true
+
+  # Full error reports are disabled and caching is turned on.
+  config.consider_all_requests_local       = false
+  config.action_controller.perform_caching = true
+
+  # Attempt to read encrypted secrets from `config/secrets.yml.enc`.
+  # Requires an encryption key in `ENV["RAILS_MASTER_KEY"]` or
+  # `config/secrets.yml.key`.
+  config.read_encrypted_secrets = true
+
+  # Disable serving static files from the `/public` folder by default since
+  # Apache or NGINX already handles this.
+  config.public_file_server.enabled = ENV['RAILS_SERVE_STATIC_FILES'].present?
+
+  # Compress JavaScripts and CSS.
+  config.assets.js_compressor = :uglifier
+  # config.assets.css_compressor = :sass
+
+  # Do not fallback to assets pipeline if a precompiled asset is missed.
+  config.assets.compile = false
+
+  # `config.assets.precompile` and `config.assets.version` have moved to config/initializers/assets.rb
+
+  # Enable serving of images, stylesheets, and JavaScripts from an asset server.
+  # config.action_controller.asset_host = 'http://assets.example.com'
+
+  # Specifies the header that your server uses for sending files.
+  # config.action_dispatch.x_sendfile_header = 'X-Sendfile' # for Apache
+  # config.action_dispatch.x_sendfile_header = 'X-Accel-Redirect' # for NGINX
+
+  # Mount Action Cable outside main process or domain
+  # config.action_cable.mount_path = nil
+  # config.action_cable.url = 'wss://example.com/cable'
+  # config.action_cable.allowed_request_origins = [ 'http://example.com', /http:\/\/example.*/ ]
+
+  # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
+  # config.force_ssl = true
+
+  # Use the lowest log level to ensure availability of diagnostic information
+  # when problems arise.
+  config.log_level = :debug
+
+  # Prepend all log lines with the following tags.
+  config.log_tags = [ :request_id ]
+
+  # Use a different cache store in production.
+  # config.cache_store = :mem_cache_store
+
+  # Enable locale fallbacks for I18n (makes lookups for any locale fall back to
+  # the I18n.default_locale when a translation cannot be found).
+  config.i18n.fallbacks = true
+
+  # Send deprecation notices to registered listeners.
+  config.active_support.deprecation = :notify
+
+  # Use default logging formatter so that PID and timestamp are not suppressed.
+  config.log_formatter = ::Logger::Formatter.new
+
+  # Use a different logger for distributed setups.
+  # require 'syslog/logger'
+  # config.logger = ActiveSupport::TaggedLogging.new(Syslog::Logger.new 'app-name')
+
+  if ENV["RAILS_LOG_TO_STDOUT"].present?
+    logger           = ActiveSupport::Logger.new(STDOUT)
+    logger.formatter = config.log_formatter
+    config.logger    = ActiveSupport::TaggedLogging.new(logger)
+  end
+
+  # Do not dump schema after migrations.
+  config.active_record.dump_schema_after_migration = false
+end
diff --git a/test/dummy/config/environments/test.rb b/test/dummy/config/environments/test.rb
new file mode 100644
index 0000000000..4380dfc0cd
--- /dev/null
+++ b/test/dummy/config/environments/test.rb
@@ -0,0 +1,33 @@
+Rails.application.configure do
+  # Settings specified here will take precedence over those in config/application.rb.
+
+  # The test environment is used exclusively to run your application's
+  # test suite. You never need to work with it otherwise. Remember that
+  # your test database is "scratch space" for the test suite and is wiped
+  # and recreated between test runs. Don't rely on the data there!
+  config.cache_classes = true
+
+  # Do not eager load code on boot. This avoids loading your whole application
+  # just for the purpose of running a single test. If you are using a tool that
+  # preloads Rails for running tests, you may have to set it to true.
+  config.eager_load = false
+
+  # Configure public file server for tests with Cache-Control for performance.
+  config.public_file_server.enabled = true
+  config.public_file_server.headers = {
+    'Cache-Control' => "public, max-age=#{1.hour.seconds.to_i}"
+  }
+
+  # Show full error reports and disable caching.
+  config.consider_all_requests_local       = true
+  config.action_controller.perform_caching = false
+
+  # Raise exceptions instead of rendering exception templates.
+  config.action_dispatch.show_exceptions = false
+
+  # Print deprecation notices to the stderr.
+  config.active_support.deprecation = :stderr
+
+  # Raises error for missing translations
+  # config.action_view.raise_on_missing_translations = true
+end
diff --git a/test/dummy/config/initializers/application_controller_renderer.rb b/test/dummy/config/initializers/application_controller_renderer.rb
new file mode 100644
index 0000000000..51639b67a0
--- /dev/null
+++ b/test/dummy/config/initializers/application_controller_renderer.rb
@@ -0,0 +1,6 @@
+# Be sure to restart your server when you modify this file.
+
+# ApplicationController.renderer.defaults.merge!(
+#   http_host: 'example.org',
+#   https: false
+# )
diff --git a/test/dummy/config/initializers/assets.rb b/test/dummy/config/initializers/assets.rb
new file mode 100644
index 0000000000..4b828e80cb
--- /dev/null
+++ b/test/dummy/config/initializers/assets.rb
@@ -0,0 +1,14 @@
+# Be sure to restart your server when you modify this file.
+
+# Version of your assets, change this if you want to expire all your assets.
+Rails.application.config.assets.version = '1.0'
+
+# Add additional assets to the asset load path.
+# Rails.application.config.assets.paths << Emoji.images_path
+# Add Yarn node_modules folder to the asset load path.
+Rails.application.config.assets.paths << Rails.root.join('node_modules')
+
+# Precompile additional assets.
+# application.js, application.css, and all non-JS/CSS in the app/assets
+# folder are already added.
+# Rails.application.config.assets.precompile += %w( admin.js admin.css )
diff --git a/test/dummy/config/initializers/backtrace_silencers.rb b/test/dummy/config/initializers/backtrace_silencers.rb
new file mode 100644
index 0000000000..59385cdf37
--- /dev/null
+++ b/test/dummy/config/initializers/backtrace_silencers.rb
@@ -0,0 +1,7 @@
+# Be sure to restart your server when you modify this file.
+
+# You can add backtrace silencers for libraries that you're using but don't wish to see in your backtraces.
+# Rails.backtrace_cleaner.add_silencer { |line| line =~ /my_noisy_library/ }
+
+# You can also remove all the silencers if you're trying to debug a problem that might stem from framework code.
+# Rails.backtrace_cleaner.remove_silencers!
diff --git a/test/dummy/config/initializers/cookies_serializer.rb b/test/dummy/config/initializers/cookies_serializer.rb
new file mode 100644
index 0000000000..5a6a32d371
--- /dev/null
+++ b/test/dummy/config/initializers/cookies_serializer.rb
@@ -0,0 +1,5 @@
+# Be sure to restart your server when you modify this file.
+
+# Specify a serializer for the signed and encrypted cookie jars.
+# Valid options are :json, :marshal, and :hybrid.
+Rails.application.config.action_dispatch.cookies_serializer = :json
diff --git a/test/dummy/config/initializers/filter_parameter_logging.rb b/test/dummy/config/initializers/filter_parameter_logging.rb
new file mode 100644
index 0000000000..4a994e1e7b
--- /dev/null
+++ b/test/dummy/config/initializers/filter_parameter_logging.rb
@@ -0,0 +1,4 @@
+# Be sure to restart your server when you modify this file.
+
+# Configure sensitive parameters which will be filtered from the log file.
+Rails.application.config.filter_parameters += [:password]
diff --git a/test/dummy/config/initializers/inflections.rb b/test/dummy/config/initializers/inflections.rb
new file mode 100644
index 0000000000..ac033bf9dc
--- /dev/null
+++ b/test/dummy/config/initializers/inflections.rb
@@ -0,0 +1,16 @@
+# Be sure to restart your server when you modify this file.
+
+# Add new inflection rules using the following format. Inflections
+# are locale specific, and you may define rules for as many different
+# locales as you wish. All of these examples are active by default:
+# ActiveSupport::Inflector.inflections(:en) do |inflect|
+#   inflect.plural /^(ox)$/i, '\1en'
+#   inflect.singular /^(ox)en/i, '\1'
+#   inflect.irregular 'person', 'people'
+#   inflect.uncountable %w( fish sheep )
+# end
+
+# These inflection rules are supported but not enabled by default:
+# ActiveSupport::Inflector.inflections(:en) do |inflect|
+#   inflect.acronym 'RESTful'
+# end
diff --git a/test/dummy/config/initializers/mime_types.rb b/test/dummy/config/initializers/mime_types.rb
new file mode 100644
index 0000000000..dc1899682b
--- /dev/null
+++ b/test/dummy/config/initializers/mime_types.rb
@@ -0,0 +1,4 @@
+# Be sure to restart your server when you modify this file.
+
+# Add new mime types for use in respond_to blocks:
+# Mime::Type.register "text/richtext", :rtf
diff --git a/test/dummy/config/initializers/wrap_parameters.rb b/test/dummy/config/initializers/wrap_parameters.rb
new file mode 100644
index 0000000000..bbfc3961bf
--- /dev/null
+++ b/test/dummy/config/initializers/wrap_parameters.rb
@@ -0,0 +1,14 @@
+# Be sure to restart your server when you modify this file.
+
+# This file contains settings for ActionController::ParamsWrapper which
+# is enabled by default.
+
+# Enable parameter wrapping for JSON. You can disable this by setting :format to an empty array.
+ActiveSupport.on_load(:action_controller) do
+  wrap_parameters format: [:json]
+end
+
+# To enable root element in JSON for ActiveRecord objects.
+# ActiveSupport.on_load(:active_record) do
+#   self.include_root_in_json = true
+# end
diff --git a/test/dummy/config/routes.rb b/test/dummy/config/routes.rb
new file mode 100644
index 0000000000..1daf9a4121
--- /dev/null
+++ b/test/dummy/config/routes.rb
@@ -0,0 +1,2 @@
+Rails.application.routes.draw do
+end
diff --git a/test/dummy/config/secrets.yml b/test/dummy/config/secrets.yml
new file mode 100644
index 0000000000..77d1fc383a
--- /dev/null
+++ b/test/dummy/config/secrets.yml
@@ -0,0 +1,32 @@
+# Be sure to restart your server when you modify this file.
+
+# Your secret key is used for verifying the integrity of signed cookies.
+# If you change this key, all old signed cookies will become invalid!
+
+# Make sure the secret is at least 30 characters and all random,
+# no regular words or you'll be exposed to dictionary attacks.
+# You can use `rails secret` to generate a secure secret key.
+
+# Make sure the secrets in this file are kept private
+# if you're sharing your code publicly.
+
+# Shared secrets are available across all environments.
+
+# shared:
+#   api_key: a1B2c3D4e5F6
+
+# Environmental secrets are only available for that specific environment.
+
+development:
+  secret_key_base: e0ef5744b10d988669be6b2660c259749779964f3dcb487fd6199743b3558e2d89f7681d6a15d16d144e28979cbdae41885f4fb4c2cf56ff92ac22df282ffb66
+
+test:
+  secret_key_base: 6fb1f3a828a8dcd6ac8dc07b43be4a5265ad64379120d417252a1578fe1f790e7b85ade4f95994de1ac8fb78581690de6e3a6ac4af36a0f0139667418c750d05
+
+# Do not keep production secrets in the unencrypted secrets file.
+# Instead, either read values from the environment.
+# Or, use `bin/rails secrets:setup` to configure encrypted secrets
+# and move the `production:` environment over there.
+
+production:
+  secret_key_base: <%= ENV["SECRET_KEY_BASE"] %>
diff --git a/test/dummy/config/spring.rb b/test/dummy/config/spring.rb
new file mode 100644
index 0000000000..c9119b40c0
--- /dev/null
+++ b/test/dummy/config/spring.rb
@@ -0,0 +1,6 @@
+%w(
+  .ruby-version
+  .rbenv-vars
+  tmp/restart.txt
+  tmp/caching-dev.txt
+).each { |path| Spring.watch(path) }
diff --git a/test/dummy/config/storage_services.yml b/test/dummy/config/storage_services.yml
new file mode 100644
index 0000000000..2c6762e0d6
--- /dev/null
+++ b/test/dummy/config/storage_services.yml
@@ -0,0 +1,3 @@
+local:
+  service: Disk
+  root: <%= Rails.root.join("storage") %>
diff --git a/test/dummy/lib/assets/.keep b/test/dummy/lib/assets/.keep
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/test/dummy/lib/assets/.keep
diff --git a/test/dummy/log/.keep b/test/dummy/log/.keep
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/test/dummy/log/.keep
diff --git a/test/dummy/package.json b/test/dummy/package.json
new file mode 100644
index 0000000000..caa2d7bb3f
--- /dev/null
+++ b/test/dummy/package.json
@@ -0,0 +1,5 @@
+{
+  "name": "dummy",
+  "private": true,
+  "dependencies": {}
+}
diff --git a/test/dummy/public/404.html b/test/dummy/public/404.html
new file mode 100644
index 0000000000..2be3af26fc
--- /dev/null
+++ b/test/dummy/public/404.html
@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <title>The page you were looking for doesn't exist (404)</title>
+  <meta name="viewport" content="width=device-width,initial-scale=1">
+  <style>
+  .rails-default-error-page {
+    background-color: #EFEFEF;
+    color: #2E2F30;
+    text-align: center;
+    font-family: arial, sans-serif;
+    margin: 0;
+  }
+
+  .rails-default-error-page div.dialog {
+    width: 95%;
+    max-width: 33em;
+    margin: 4em auto 0;
+  }
+
+  .rails-default-error-page div.dialog > div {
+    border: 1px solid #CCC;
+    border-right-color: #999;
+    border-left-color: #999;
+    border-bottom-color: #BBB;
+    border-top: #B00100 solid 4px;
+    border-top-left-radius: 9px;
+    border-top-right-radius: 9px;
+    background-color: white;
+    padding: 7px 12% 0;
+    box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
+  }
+
+  .rails-default-error-page h1 {
+    font-size: 100%;
+    color: #730E15;
+    line-height: 1.5em;
+  }
+
+  .rails-default-error-page div.dialog > p {
+    margin: 0 0 1em;
+    padding: 1em;
+    background-color: #F7F7F7;
+    border: 1px solid #CCC;
+    border-right-color: #999;
+    border-left-color: #999;
+    border-bottom-color: #999;
+    border-bottom-left-radius: 4px;
+    border-bottom-right-radius: 4px;
+    border-top-color: #DADADA;
+    color: #666;
+    box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
+  }
+  </style>
+</head>
+
+<body class="rails-default-error-page">
+  <!-- This file lives in public/404.html -->
+  <div class="dialog">
+    <div>
+      <h1>The page you were looking for doesn't exist.</h1>
+      <p>You may have mistyped the address or the page may have moved.</p>
+    </div>
+    <p>If you are the application owner check the logs for more information.</p>
+  </div>
+</body>
+</html>
diff --git a/test/dummy/public/422.html b/test/dummy/public/422.html
new file mode 100644
index 0000000000..c08eac0d1d
--- /dev/null
+++ b/test/dummy/public/422.html
@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <title>The change you wanted was rejected (422)</title>
+  <meta name="viewport" content="width=device-width,initial-scale=1">
+  <style>
+  .rails-default-error-page {
+    background-color: #EFEFEF;
+    color: #2E2F30;
+    text-align: center;
+    font-family: arial, sans-serif;
+    margin: 0;
+  }
+
+  .rails-default-error-page div.dialog {
+    width: 95%;
+    max-width: 33em;
+    margin: 4em auto 0;
+  }
+
+  .rails-default-error-page div.dialog > div {
+    border: 1px solid #CCC;
+    border-right-color: #999;
+    border-left-color: #999;
+    border-bottom-color: #BBB;
+    border-top: #B00100 solid 4px;
+    border-top-left-radius: 9px;
+    border-top-right-radius: 9px;
+    background-color: white;
+    padding: 7px 12% 0;
+    box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
+  }
+
+  .rails-default-error-page h1 {
+    font-size: 100%;
+    color: #730E15;
+    line-height: 1.5em;
+  }
+
+  .rails-default-error-page div.dialog > p {
+    margin: 0 0 1em;
+    padding: 1em;
+    background-color: #F7F7F7;
+    border: 1px solid #CCC;
+    border-right-color: #999;
+    border-left-color: #999;
+    border-bottom-color: #999;
+    border-bottom-left-radius: 4px;
+    border-bottom-right-radius: 4px;
+    border-top-color: #DADADA;
+    color: #666;
+    box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
+  }
+  </style>
+</head>
+
+<body class="rails-default-error-page">
+  <!-- This file lives in public/422.html -->
+  <div class="dialog">
+    <div>
+      <h1>The change you wanted was rejected.</h1>
+      <p>Maybe you tried to change something you didn't have access to.</p>
+    </div>
+    <p>If you are the application owner check the logs for more information.</p>
+  </div>
+</body>
+</html>
diff --git a/test/dummy/public/500.html b/test/dummy/public/500.html
new file mode 100644
index 0000000000..78a030af22
--- /dev/null
+++ b/test/dummy/public/500.html
@@ -0,0 +1,66 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <title>We're sorry, but something went wrong (500)</title>
+  <meta name="viewport" content="width=device-width,initial-scale=1">
+  <style>
+  .rails-default-error-page {
+    background-color: #EFEFEF;
+    color: #2E2F30;
+    text-align: center;
+    font-family: arial, sans-serif;
+    margin: 0;
+  }
+
+  .rails-default-error-page div.dialog {
+    width: 95%;
+    max-width: 33em;
+    margin: 4em auto 0;
+  }
+
+  .rails-default-error-page div.dialog > div {
+    border: 1px solid #CCC;
+    border-right-color: #999;
+    border-left-color: #999;
+    border-bottom-color: #BBB;
+    border-top: #B00100 solid 4px;
+    border-top-left-radius: 9px;
+    border-top-right-radius: 9px;
+    background-color: white;
+    padding: 7px 12% 0;
+    box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
+  }
+
+  .rails-default-error-page h1 {
+    font-size: 100%;
+    color: #730E15;
+    line-height: 1.5em;
+  }
+
+  .rails-default-error-page div.dialog > p {
+    margin: 0 0 1em;
+    padding: 1em;
+    background-color: #F7F7F7;
+    border: 1px solid #CCC;
+    border-right-color: #999;
+    border-left-color: #999;
+    border-bottom-color: #999;
+    border-bottom-left-radius: 4px;
+    border-bottom-right-radius: 4px;
+    border-top-color: #DADADA;
+    color: #666;
+    box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
+  }
+  </style>
+</head>
+
+<body class="rails-default-error-page">
+  <!-- This file lives in public/500.html -->
+  <div class="dialog">
+    <div>
+      <h1>We're sorry, but something went wrong.</h1>
+    </div>
+    <p>If you are the application owner check the logs for more information.</p>
+  </div>
+</body>
+</html>
diff --git a/test/dummy/public/apple-touch-icon-precomposed.png b/test/dummy/public/apple-touch-icon-precomposed.png
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/test/dummy/public/apple-touch-icon-precomposed.png
diff --git a/test/dummy/public/apple-touch-icon.png b/test/dummy/public/apple-touch-icon.png
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/test/dummy/public/apple-touch-icon.png
diff --git a/test/dummy/public/favicon.ico b/test/dummy/public/favicon.ico
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/test/dummy/public/favicon.ico
diff --git a/test/models/blob_test.rb b/test/models/blob_test.rb
index 4a8f1cabf6..a5b291d5db 100644
--- a/test/models/blob_test.rb
+++ b/test/models/blob_test.rb
@@ -35,6 +35,7 @@ class ActiveStorage::BlobTest < ActiveSupport::TestCase
 
   private
     def expected_url_for(blob, disposition: :inline)
-      "/rails/active_storage/disk/#{ActiveStorage.verifier.generate(blob.key, expires_in: 5.minutes, purpose: :blob_key)}/#{blob.filename}?disposition=#{disposition}&content_type=#{blob.content_type}"
+      query_string = { content_type: blob.content_type, disposition: disposition }.to_param
+      "/rails/active_storage/disk/#{ActiveStorage.verifier.generate(blob.key, expires_in: 5.minutes, purpose: :blob_key)}/#{blob.filename}?#{query_string}"
     end
 end
diff --git a/test/service/disk_service_test.rb b/test/service/disk_service_test.rb
index 1dae4a2f00..a625521601 100644
--- a/test/service/disk_service_test.rb
+++ b/test/service/disk_service_test.rb
@@ -6,7 +6,7 @@ class ActiveStorage::Service::DiskServiceTest < ActiveSupport::TestCase
   include ActiveStorage::Service::SharedServiceTests
 
   test "url generation" do
-    assert_match /rails\/active_storage\/disk\/.*\/avatar\.png\?disposition=inline/,
+    assert_match /rails\/active_storage\/disk\/.*\/avatar\.png\?.+disposition=inline/,
       @service.url(FIXTURE_KEY, expires_in: 5.minutes, disposition: :inline, filename: "avatar.png", content_type: "image/png")
   end
 end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 6c5d8f85ce..9922c8685c 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -1,6 +1,4 @@
-$LOAD_PATH << File.expand_path("../../app/controllers", __FILE__)
-$LOAD_PATH << File.expand_path("../../app/models", __FILE__)
-$LOAD_PATH << File.expand_path("../../app/jobs", __FILE__)
+require File.expand_path("../../test/dummy/config/environment.rb", __FILE__)
 
 require "bundler/setup"
 require "active_support"
@@ -14,7 +12,6 @@ ActiveJob::Base.logger = nil
 
 require "active_storage"
 
-require "active_storage/service"
 require "yaml"
 SERVICE_CONFIGURATIONS = begin
   YAML.load_file(File.expand_path("../service/configurations.yml", __FILE__)).deep_symbolize_keys
@@ -23,8 +20,6 @@ rescue Errno::ENOENT
   {}
 end
 
-require "active_storage/blob"
-require "active_storage/service/disk_service"
 require "tmpdir"
 ActiveStorage::Blob.service = ActiveStorage::Service::DiskService.new(root: Dir.mktmpdir("active_storage_tests"))
 ActiveStorage::Service.logger = ActiveSupport::Logger.new(STDOUT)
@@ -54,20 +49,6 @@ class ActiveSupport::TestCase
     end
 end
 
-require "action_controller"
-require "action_controller/test_case"
-class ActionController::TestCase
-  Routes = ActionDispatch::Routing::RouteSet.new.tap do |routes|
-    routes.draw do
-      # FIXME: Hacky way to avoid having to instantiate the real engine
-      eval(File.readlines(File.expand_path("../../config/routes.rb", __FILE__)).slice(1..-2).join("\n"))
-    end
-  end
-end
-
-require "active_storage/attached"
-ActiveRecord::Base.send :extend, ActiveStorage::Attached::Macros
-
 require "global_id"
 GlobalID.app = "ActiveStorageExampleApp"
 ActiveRecord::Base.send :include, GlobalID::Identification