applies new string literal convention in railties/test

The current code base is not uniform. After some discussion,
we have chosen to go with double quotes by default.

1 files changed, 200 insertions, 200 deletions

diff --git a/railties/test/application/configuration_test.rb b/railties/test/application/configuration_test.rb
index e4a3adee9f..01bdcfb9aa 100644
--- a/railties/test/application/configuration_test.rb
+++ b/railties/test/application/configuration_test.rb
@@ -1,6 +1,6 @@
 require "isolation/abstract_unit"
-require 'rack/test'
-require 'env_helpers'
+require "rack/test"
+require "env_helpers"
 
 class ::MyMailInterceptor
   def self.delivering_email(email); email; end
@@ -34,9 +34,9 @@ module ApplicationTests
       FileUtils.cp_r(app_path, new_app)
     end
 
-    def app(env = 'development')
+    def app(env = "development")
       @app ||= begin
-        ENV['RAILS_ENV'] = env
+        ENV["RAILS_ENV"] = env
 
         # FIXME: shush Sass warning spam, not relevant to testing Railties
         Kernel.silence_warnings do
@@ -45,7 +45,7 @@ module ApplicationTests
 
         Rails.application
       ensure
-        ENV.delete 'RAILS_ENV'
+        ENV.delete "RAILS_ENV"
       end
     end
 
@@ -74,7 +74,7 @@ module ApplicationTests
       switch_env "RAILS_ENV", nil do
         Rails.env = "development"
         assert_equal "development", Rails.env
-        assert_nil ENV['RAILS_ENV']
+        assert_nil ENV["RAILS_ENV"]
       end
     end
 
@@ -82,7 +82,7 @@ module ApplicationTests
       restore_default_config
 
       with_rails_env "development" do
-        app 'development'
+        app "development"
         assert Rails.application.config.log_tags.blank?
       end
     end
@@ -91,13 +91,13 @@ module ApplicationTests
       restore_default_config
 
       with_rails_env "production" do
-        app 'production'
+        app "production"
         assert_equal [:request_id], Rails.application.config.log_tags
       end
     end
 
     test "lib dir is on LOAD_PATH during config" do
-      app_file 'lib/my_logger.rb', <<-RUBY
+      app_file "lib/my_logger.rb", <<-RUBY
         require "logger"
         class MyLogger < ::Logger
         end
@@ -107,9 +107,9 @@ module ApplicationTests
         config.logger = MyLogger.new STDOUT
       RUBY
 
-      app 'development'
+      app "development"
 
-      assert_equal 'MyLogger', Rails.application.config.logger.class.name
+      assert_equal "MyLogger", Rails.application.config.logger.class.name
     end
 
     test "a renders exception on pending migration" do
@@ -119,7 +119,7 @@ module ApplicationTests
         config.action_dispatch.show_exceptions  = true
       RUBY
 
-      app_file 'db/migrate/20140708012246_create_user.rb', <<-RUBY
+      app_file "db/migrate/20140708012246_create_user.rb", <<-RUBY
         class CreateUser < ActiveRecord::Migration::Current
           def change
             create_table :users
@@ -127,7 +127,7 @@ module ApplicationTests
         end
       RUBY
 
-      app 'development'
+      app "development"
 
       ActiveRecord::Migrator.migrations_paths = ["#{app_path}/db/migrate"]
 
@@ -156,31 +156,31 @@ module ApplicationTests
     end
 
     test "Rails.application is nil until app is initialized" do
-      require 'rails'
+      require "rails"
       assert_nil Rails.application
-      app 'development'
+      app "development"
       assert_equal AppTemplate::Application.instance, Rails.application
     end
 
     test "Rails.application responds to all instance methods" do
-      app 'development'
+      app "development"
       assert_respond_to Rails.application, :routes_reloader
       assert_equal Rails.application.routes_reloader, AppTemplate::Application.routes_reloader
     end
 
     test "Rails::Application responds to paths" do
-      app 'development'
+      app "development"
       assert_respond_to AppTemplate::Application, :paths
       assert_equal ["#{app_path}/app/views"], AppTemplate::Application.paths["app/views"].expanded
     end
 
     test "the application root is set correctly" do
-      app 'development'
+      app "development"
       assert_equal Pathname.new(app_path), Rails.application.root
     end
 
     test "the application root can be seen from the application singleton" do
-      app 'development'
+      app "development"
       assert_equal Pathname.new(app_path), AppTemplate::Application.root
     end
 
@@ -192,7 +192,7 @@ module ApplicationTests
 
       use_frameworks []
 
-      app 'development'
+      app "development"
 
       assert_equal Pathname.new(new_app), Rails.application.root
     end
@@ -203,7 +203,7 @@ module ApplicationTests
       use_frameworks []
 
       Dir.chdir("#{app_path}") do
-        app 'development'
+        app "development"
         assert_equal Pathname.new("#{app_path}"), Rails.application.root
       end
     end
@@ -213,7 +213,7 @@ module ApplicationTests
         config.root = "#{app_path}"
       RUBY
 
-      app 'development'
+      app "development"
 
       assert_instance_of Pathname, Rails.root
     end
@@ -223,7 +223,7 @@ module ApplicationTests
         config.paths["public"] = "somewhere"
       RUBY
 
-      app 'development'
+      app "development"
 
       assert_instance_of Pathname, Rails.public_path
     end
@@ -234,13 +234,13 @@ module ApplicationTests
         config.cache_classes = true
       RUBY
 
-      app 'development'
+      app "development"
 
       assert_equal :require, ActiveSupport::Dependencies.mechanism
     end
 
     test "application is always added to eager_load namespaces" do
-      app 'development'
+      app "development"
       assert_includes Rails.application.config.eager_load_namespaces, AppTemplate::Application
     end
 
@@ -256,7 +256,7 @@ module ApplicationTests
       use_frameworks []
 
       assert_nothing_raised do
-        app 'development'
+        app "development"
       end
     end
 
@@ -268,18 +268,18 @@ module ApplicationTests
       RUBY
 
       assert_nothing_raised do
-        app 'development'
+        app "development"
       end
     end
 
     test "filter_parameters should be able to set via config.filter_parameters in an initializer" do
-      app_file 'config/initializers/filter_parameters_logging.rb', <<-RUBY
+      app_file "config/initializers/filter_parameters_logging.rb", <<-RUBY
         Rails.application.config.filter_parameters += [ :password, :foo, 'bar' ]
       RUBY
 
-      app 'development'
+      app "development"
 
-      assert_equal [:password, :foo, 'bar'], Rails.application.env_config['action_dispatch.parameter_filter']
+      assert_equal [:password, :foo, "bar"], Rails.application.env_config["action_dispatch.parameter_filter"]
     end
 
     test "config.to_prepare is forwarded to ActionDispatch" do
@@ -293,7 +293,7 @@ module ApplicationTests
 
       assert !$prepared
 
-      app 'development'
+      app "development"
 
       get "/"
       assert $prepared
@@ -305,7 +305,7 @@ module ApplicationTests
     end
 
     test "skipping config.encoding still results in 'utf-8' as the default" do
-      app 'development'
+      app "development"
       assert_utf8
     end
 
@@ -314,7 +314,7 @@ module ApplicationTests
         config.encoding = "utf-8"
       RUBY
 
-      app 'development'
+      app "development"
       assert_utf8
     end
 
@@ -323,7 +323,7 @@ module ApplicationTests
         config.paths["public"] = "somewhere"
       RUBY
 
-      app 'development'
+      app "development"
       assert_equal Pathname.new(app_path).join("somewhere"), Rails.public_path
     end
 
@@ -331,7 +331,7 @@ module ApplicationTests
       restore_default_config
 
       with_rails_env "production" do
-        app 'production'
+        app "production"
         assert_not app.config.public_file_server.enabled
       end
     end
@@ -341,7 +341,7 @@ module ApplicationTests
 
       with_rails_env "production" do
         switch_env "RAILS_SERVE_STATIC_FILES", "1" do
-          app 'production'
+          app "production"
           assert app.config.public_file_server.enabled
         end
       end
@@ -352,7 +352,7 @@ module ApplicationTests
 
       with_rails_env "production" do
         switch_env "RAILS_LOG_TO_STDOUT", "1" do
-          app 'production'
+          app "production"
           assert ActiveSupport::Logger.logger_outputs_to?(app.config.logger, STDOUT)
         end
       end
@@ -363,7 +363,7 @@ module ApplicationTests
 
       with_rails_env "production" do
         switch_env "RAILS_SERVE_STATIC_FILES", " " do
-          app 'production'
+          app "production"
           assert_not app.config.public_file_server.enabled
         end
       end
@@ -391,7 +391,7 @@ module ApplicationTests
 
     test "Use key_generator when secret_key_base is set" do
       make_basic_app do |application|
-        application.secrets.secret_key_base = 'b3c631c314c0bbca50c1b2843150fe33'
+        application.secrets.secret_key_base = "b3c631c314c0bbca50c1b2843150fe33"
         application.config.session_store :disabled
       end
 
@@ -404,53 +404,53 @@ module ApplicationTests
 
       get "/"
 
-      secret = app.key_generator.generate_key('signed cookie')
+      secret = app.key_generator.generate_key("signed cookie")
       verifier = ActiveSupport::MessageVerifier.new(secret)
-      assert_equal 'some_value', verifier.verify(last_response.body)
+      assert_equal "some_value", verifier.verify(last_response.body)
     end
 
     test "application verifier can be used in the entire application" do
       make_basic_app do |application|
-        application.secrets.secret_key_base = 'b3c631c314c0bbca50c1b2843150fe33'
+        application.secrets.secret_key_base = "b3c631c314c0bbca50c1b2843150fe33"
         application.config.session_store :disabled
       end
 
       message = app.message_verifier(:sensitive_value).generate("some_value")
 
-      assert_equal 'some_value', Rails.application.message_verifier(:sensitive_value).verify(message)
+      assert_equal "some_value", Rails.application.message_verifier(:sensitive_value).verify(message)
 
-      secret = app.key_generator.generate_key('sensitive_value')
+      secret = app.key_generator.generate_key("sensitive_value")
       verifier = ActiveSupport::MessageVerifier.new(secret)
-      assert_equal 'some_value', verifier.verify(message)
+      assert_equal "some_value", verifier.verify(message)
     end
 
     test "application message verifier can be used when the key_generator is ActiveSupport::LegacyKeyGenerator" do
-      app_file 'config/initializers/secret_token.rb', <<-RUBY
+      app_file "config/initializers/secret_token.rb", <<-RUBY
         Rails.application.config.secret_token = "b3c631c314c0bbca50c1b2843150fe33"
       RUBY
-      app_file 'config/secrets.yml', <<-YAML
+      app_file "config/secrets.yml", <<-YAML
         development:
           secret_key_base:
       YAML
 
-      app 'development'
+      app "development"
 
-      assert_equal app.env_config['action_dispatch.key_generator'], Rails.application.key_generator
-      assert_equal app.env_config['action_dispatch.key_generator'].class, ActiveSupport::LegacyKeyGenerator
+      assert_equal app.env_config["action_dispatch.key_generator"], Rails.application.key_generator
+      assert_equal app.env_config["action_dispatch.key_generator"].class, ActiveSupport::LegacyKeyGenerator
       message = app.message_verifier(:sensitive_value).generate("some_value")
-      assert_equal 'some_value', Rails.application.message_verifier(:sensitive_value).verify(message)
+      assert_equal "some_value", Rails.application.message_verifier(:sensitive_value).verify(message)
     end
 
     test "warns when secrets.secret_key_base is blank and config.secret_token is set" do
-      app_file 'config/initializers/secret_token.rb', <<-RUBY
+      app_file "config/initializers/secret_token.rb", <<-RUBY
         Rails.application.config.secret_token = "b3c631c314c0bbca50c1b2843150fe33"
       RUBY
-      app_file 'config/secrets.yml', <<-YAML
+      app_file "config/secrets.yml", <<-YAML
         development:
           secret_key_base:
       YAML
 
-      app 'development'
+      app "development"
 
       assert_deprecated(/You didn't set `secret_key_base`./) do
         app.env_config
@@ -458,12 +458,12 @@ module ApplicationTests
     end
 
     test "raise when secrets.secret_key_base is not a type of string" do
-      app_file 'config/secrets.yml', <<-YAML
+      app_file "config/secrets.yml", <<-YAML
         development:
           secret_key_base: 123
       YAML
 
-      app 'development'
+      app "development"
 
       assert_raise(ArgumentError) do
         app.key_generator
@@ -471,31 +471,31 @@ module ApplicationTests
     end
 
     test "prefer secrets.secret_token over config.secret_token" do
-      app_file 'config/initializers/secret_token.rb', <<-RUBY
+      app_file "config/initializers/secret_token.rb", <<-RUBY
         Rails.application.config.secret_token = ""
       RUBY
-      app_file 'config/secrets.yml', <<-YAML
+      app_file "config/secrets.yml", <<-YAML
         development:
           secret_token: 3b7cd727ee24e8444053437c36cc66c3
       YAML
 
-      app 'development'
+      app "development"
 
-      assert_equal '3b7cd727ee24e8444053437c36cc66c3', app.secrets.secret_token
+      assert_equal "3b7cd727ee24e8444053437c36cc66c3", app.secrets.secret_token
     end
 
     test "application verifier can build different verifiers" do
       make_basic_app do |application|
-        application.secrets.secret_key_base = 'b3c631c314c0bbca50c1b2843150fe33'
+        application.secrets.secret_key_base = "b3c631c314c0bbca50c1b2843150fe33"
         application.config.session_store :disabled
       end
 
       default_verifier = app.message_verifier(:sensitive_value)
       text_verifier = app.message_verifier(:text)
 
-      message = text_verifier.generate('some_value')
+      message = text_verifier.generate("some_value")
 
-      assert_equal 'some_value', text_verifier.verify(message)
+      assert_equal "some_value", text_verifier.verify(message)
       assert_raises ActiveSupport::MessageVerifier::InvalidSignature do
         default_verifier.verify(message)
       end
@@ -505,68 +505,68 @@ module ApplicationTests
     end
 
     test "secrets.secret_key_base is used when config/secrets.yml is present" do
-      app_file 'config/secrets.yml', <<-YAML
+      app_file "config/secrets.yml", <<-YAML
         development:
           secret_key_base: 3b7cd727ee24e8444053437c36cc66c3
       YAML
 
-      app 'development'
-      assert_equal '3b7cd727ee24e8444053437c36cc66c3', app.secrets.secret_key_base
+      app "development"
+      assert_equal "3b7cd727ee24e8444053437c36cc66c3", app.secrets.secret_key_base
     end
 
     test "secret_key_base is copied from config to secrets when not set" do
       remove_file "config/secrets.yml"
-      app_file 'config/initializers/secret_token.rb', <<-RUBY
+      app_file "config/initializers/secret_token.rb", <<-RUBY
         Rails.application.config.secret_key_base = "3b7cd727ee24e8444053437c36cc66c3"
       RUBY
 
-      app 'development'
-      assert_equal '3b7cd727ee24e8444053437c36cc66c3', app.secrets.secret_key_base
+      app "development"
+      assert_equal "3b7cd727ee24e8444053437c36cc66c3", app.secrets.secret_key_base
     end
 
     test "config.secret_token over-writes a blank secrets.secret_token" do
-      app_file 'config/initializers/secret_token.rb', <<-RUBY
+      app_file "config/initializers/secret_token.rb", <<-RUBY
         Rails.application.config.secret_token = "b3c631c314c0bbca50c1b2843150fe33"
       RUBY
-      app_file 'config/secrets.yml', <<-YAML
+      app_file "config/secrets.yml", <<-YAML
         development:
           secret_key_base:
           secret_token:
       YAML
 
-      app 'development'
+      app "development"
 
-      assert_equal 'b3c631c314c0bbca50c1b2843150fe33', app.secrets.secret_token
-      assert_equal 'b3c631c314c0bbca50c1b2843150fe33', app.config.secret_token
+      assert_equal "b3c631c314c0bbca50c1b2843150fe33", app.secrets.secret_token
+      assert_equal "b3c631c314c0bbca50c1b2843150fe33", app.config.secret_token
     end
 
     test "custom secrets saved in config/secrets.yml are loaded in app secrets" do
-      app_file 'config/secrets.yml', <<-YAML
+      app_file "config/secrets.yml", <<-YAML
         development:
           secret_key_base: 3b7cd727ee24e8444053437c36cc66c3
           aws_access_key_id: myamazonaccesskeyid
           aws_secret_access_key: myamazonsecretaccesskey
       YAML
 
-      app 'development'
+      app "development"
 
-      assert_equal 'myamazonaccesskeyid', app.secrets.aws_access_key_id
-      assert_equal 'myamazonsecretaccesskey', app.secrets.aws_secret_access_key
+      assert_equal "myamazonaccesskeyid", app.secrets.aws_access_key_id
+      assert_equal "myamazonsecretaccesskey", app.secrets.aws_secret_access_key
     end
 
     test "shared secrets saved in config/secrets.yml are loaded in app secrets" do
-      app_file 'config/secrets.yml', <<-YAML
+      app_file "config/secrets.yml", <<-YAML
         shared:
           api_key: 3b7cd727
       YAML
 
-      app 'development'
+      app "development"
 
-      assert_equal '3b7cd727', app.secrets.api_key
+      assert_equal "3b7cd727", app.secrets.api_key
     end
 
     test "shared secrets will yield to environment specific secrets" do
-      app_file 'config/secrets.yml', <<-YAML
+      app_file "config/secrets.yml", <<-YAML
         shared:
           api_key: 3b7cd727
 
@@ -574,62 +574,62 @@ module ApplicationTests
           api_key: abc12345
       YAML
 
-      app 'development'
+      app "development"
 
-      assert_equal 'abc12345', app.secrets.api_key
+      assert_equal "abc12345", app.secrets.api_key
     end
 
     test "blank config/secrets.yml does not crash the loading process" do
-      app_file 'config/secrets.yml', <<-YAML
+      app_file "config/secrets.yml", <<-YAML
       YAML
 
-      app 'development'
+      app "development"
 
       assert_nil app.secrets.not_defined
     end
 
     test "config.secret_key_base over-writes a blank secrets.secret_key_base" do
-      app_file 'config/initializers/secret_token.rb', <<-RUBY
+      app_file "config/initializers/secret_token.rb", <<-RUBY
         Rails.application.config.secret_key_base = "iaminallyoursecretkeybase"
       RUBY
-      app_file 'config/secrets.yml', <<-YAML
+      app_file "config/secrets.yml", <<-YAML
         development:
           secret_key_base:
       YAML
 
-      app 'development'
+      app "development"
 
       assert_equal "iaminallyoursecretkeybase", app.secrets.secret_key_base
     end
 
     test "uses ActiveSupport::LegacyKeyGenerator as app.key_generator when secrets.secret_key_base is blank" do
-      app_file 'config/initializers/secret_token.rb', <<-RUBY
+      app_file "config/initializers/secret_token.rb", <<-RUBY
         Rails.application.config.secret_token = "b3c631c314c0bbca50c1b2843150fe33"
       RUBY
-      app_file 'config/secrets.yml', <<-YAML
+      app_file "config/secrets.yml", <<-YAML
         development:
           secret_key_base:
       YAML
 
-      app 'development'
+      app "development"
 
-      assert_equal 'b3c631c314c0bbca50c1b2843150fe33', app.config.secret_token
+      assert_equal "b3c631c314c0bbca50c1b2843150fe33", app.config.secret_token
       assert_equal nil, app.secrets.secret_key_base
       assert_equal app.key_generator.class, ActiveSupport::LegacyKeyGenerator
     end
 
     test "uses ActiveSupport::LegacyKeyGenerator with config.secret_token as app.key_generator when secrets.secret_key_base is blank" do
-      app_file 'config/initializers/secret_token.rb', <<-RUBY
+      app_file "config/initializers/secret_token.rb", <<-RUBY
         Rails.application.config.secret_token = ""
       RUBY
-      app_file 'config/secrets.yml', <<-YAML
+      app_file "config/secrets.yml", <<-YAML
         development:
           secret_key_base:
       YAML
 
-      app 'development'
+      app "development"
 
-      assert_equal '', app.config.secret_token
+      assert_equal "", app.config.secret_token
       assert_equal nil, app.secrets.secret_key_base
       assert_raise ArgumentError, /\AA secret is required/ do
         app.key_generator
@@ -650,7 +650,7 @@ module ApplicationTests
     end
 
     test "default form builder specified as a string" do
-      app_file 'config/initializers/form_builder.rb', <<-RUBY
+      app_file "config/initializers/form_builder.rb", <<-RUBY
       class CustomFormBuilder < ActionView::Helpers::FormBuilder
         def text_field(attribute, *args)
           label(attribute) + super(attribute, *args)
@@ -659,7 +659,7 @@ module ApplicationTests
       Rails.configuration.action_view.default_form_builder = "CustomFormBuilder"
       RUBY
 
-      app_file 'app/models/post.rb', <<-RUBY
+      app_file "app/models/post.rb", <<-RUBY
       class Post
         include ActiveModel::Model
         attr_accessor :name
@@ -667,7 +667,7 @@ module ApplicationTests
       RUBY
 
 
-      app_file 'app/controllers/posts_controller.rb', <<-RUBY
+      app_file "app/controllers/posts_controller.rb", <<-RUBY
       class PostsController < ApplicationController
         def index
           render inline: "<%= begin; form_for(Post.new) {|f| f.text_field(:name)}; rescue => e; e.to_s; end %>"
@@ -681,14 +681,14 @@ module ApplicationTests
         end
       RUBY
 
-      app 'development'
+      app "development"
 
       get "/posts"
       assert_match(/label/, last_response.body)
     end
 
     test "default method for update can be changed" do
-      app_file 'app/models/post.rb', <<-RUBY
+      app_file "app/models/post.rb", <<-RUBY
       class Post
         include ActiveModel::Model
         def to_key; [1]; end
@@ -698,7 +698,7 @@ module ApplicationTests
 
       token = "cf50faa3fe97702ca1ae"
 
-      app_file 'app/controllers/posts_controller.rb', <<-RUBY
+      app_file "app/controllers/posts_controller.rb", <<-RUBY
       class PostsController < ApplicationController
         def show
           render inline: "<%= begin; form_for(Post.new) {}; rescue => e; e.to_s; end %>"
@@ -720,7 +720,7 @@ module ApplicationTests
         end
       RUBY
 
-      app 'development'
+      app "development"
 
       params = { authenticity_token: token }
 
@@ -742,7 +742,7 @@ module ApplicationTests
 
     test "request forgery token param can be changed" do
       make_basic_app do |application|
-        application.config.action_controller.request_forgery_protection_token = '_xsrf_token_here'
+        application.config.action_controller.request_forgery_protection_token = "_xsrf_token_here"
       end
 
       class ::OmgController < ActionController::Base
@@ -773,7 +773,7 @@ module ApplicationTests
         config.action_mailer.interceptors = MyMailInterceptor
       RUBY
 
-      app 'development'
+      app "development"
 
       require "mail"
       _ = ActionMailer::Base
@@ -786,7 +786,7 @@ module ApplicationTests
         config.action_mailer.interceptors = [MyMailInterceptor, "MyOtherMailInterceptor"]
       RUBY
 
-      app 'development'
+      app "development"
 
       require "mail"
       _ = ActionMailer::Base
@@ -799,7 +799,7 @@ module ApplicationTests
         config.action_mailer.preview_interceptors = MyPreviewMailInterceptor
       RUBY
 
-      app 'development'
+      app "development"
 
       require "mail"
       _ = ActionMailer::Base
@@ -812,7 +812,7 @@ module ApplicationTests
         config.action_mailer.preview_interceptors = [MyPreviewMailInterceptor, "MyOtherPreviewMailInterceptor"]
       RUBY
 
-      app 'development'
+      app "development"
 
       require "mail"
       _ = ActionMailer::Base
@@ -821,11 +821,11 @@ module ApplicationTests
     end
 
     test "default preview interceptor can be removed" do
-      app_file 'config/initializers/preview_interceptors.rb', <<-RUBY
+      app_file "config/initializers/preview_interceptors.rb", <<-RUBY
         ActionMailer::Base.preview_interceptors.delete(ActionMailer::InlinePreviewInterceptor)
       RUBY
 
-      app 'development'
+      app "development"
 
       require "mail"
       _ = ActionMailer::Base
@@ -838,7 +838,7 @@ module ApplicationTests
         config.action_mailer.observers = MyMailObserver
       RUBY
 
-      app 'development'
+      app "development"
 
       require "mail"
       _ = ActionMailer::Base
@@ -851,7 +851,7 @@ module ApplicationTests
         config.action_mailer.observers = [MyMailObserver, "MyOtherMailObserver"]
       RUBY
 
-      app 'development'
+      app "development"
 
       require "mail"
       _ = ActionMailer::Base
@@ -864,12 +864,12 @@ module ApplicationTests
         config.action_mailer.deliver_later_queue_name = 'test_default'
       RUBY
 
-      app 'development'
+      app "development"
 
       require "mail"
       _ = ActionMailer::Base
 
-      assert_equal 'test_default', ActionMailer::Base.class_variable_get(:@@deliver_later_queue_name)
+      assert_equal "test_default", ActionMailer::Base.class_variable_get(:@@deliver_later_queue_name)
     end
 
     test "valid timezone is setup correctly" do
@@ -878,7 +878,7 @@ module ApplicationTests
         config.time_zone = "Wellington"
       RUBY
 
-      app 'development'
+      app "development"
 
       assert_equal "Wellington", Rails.application.config.time_zone
     end
@@ -890,7 +890,7 @@ module ApplicationTests
       RUBY
 
       assert_raise(ArgumentError) do
-        app 'development'
+        app "development"
       end
     end
 
@@ -900,7 +900,7 @@ module ApplicationTests
         config.beginning_of_week = :wednesday
       RUBY
 
-      app 'development'
+      app "development"
 
       assert_equal :wednesday, Rails.application.config.beginning_of_week
     end
@@ -912,15 +912,15 @@ module ApplicationTests
       RUBY
 
       assert_raise(ArgumentError) do
-        app 'development'
+        app "development"
       end
     end
 
     test "config.action_view.cache_template_loading with cache_classes default" do
       add_to_config "config.cache_classes = true"
 
-      app 'development'
-      require 'action_view/base'
+      app "development"
+      require "action_view/base"
 
       assert_equal true, ActionView::Resolver.caching?
     end
@@ -928,8 +928,8 @@ module ApplicationTests
     test "config.action_view.cache_template_loading without cache_classes default" do
       add_to_config "config.cache_classes = false"
 
-      app 'development'
-      require 'action_view/base'
+      app "development"
+      require "action_view/base"
 
       assert_equal false, ActionView::Resolver.caching?
     end
@@ -940,8 +940,8 @@ module ApplicationTests
         config.action_view.cache_template_loading = false
       RUBY
 
-      app 'development'
-      require 'action_view/base'
+      app "development"
+      require "action_view/base"
 
       assert_equal false, ActionView::Resolver.caching?
     end
@@ -952,8 +952,8 @@ module ApplicationTests
         config.action_view.cache_template_loading = true
       RUBY
 
-      app 'development'
-      require 'action_view/base'
+      app "development"
+      require "action_view/base"
 
       assert_equal true, ActionView::Resolver.caching?
     end
@@ -963,11 +963,11 @@ module ApplicationTests
       add_to_env_config "development", "config.cache_classes = false"
 
       # These requires are to emulate an engine loading Action View before the application
-      require 'action_view'
-      require 'action_view/railtie'
-      require 'action_view/base'
+      require "action_view"
+      require "action_view/railtie"
+      require "action_view/base"
 
-      app 'development'
+      app "development"
 
       assert_equal false, ActionView::Resolver.caching?
     end
@@ -984,15 +984,15 @@ module ApplicationTests
       end
 
       get "/"
-      assert_equal 'true', last_response.body
+      assert_equal "true", last_response.body
     end
 
     test "config.action_controller.wrap_parameters is set in ActionController::Base" do
-      app_file 'config/initializers/wrap_parameters.rb', <<-RUBY
+      app_file "config/initializers/wrap_parameters.rb", <<-RUBY
         ActionController::Base.wrap_parameters format: [:json]
       RUBY
 
-      app_file 'app/models/post.rb', <<-RUBY
+      app_file "app/models/post.rb", <<-RUBY
       class Post
         def self.attribute_names
           %w(title)
@@ -1000,13 +1000,13 @@ module ApplicationTests
       end
       RUBY
 
-      app_file 'app/controllers/application_controller.rb', <<-RUBY
+      app_file "app/controllers/application_controller.rb", <<-RUBY
       class ApplicationController < ActionController::Base
         protect_from_forgery with: :reset_session # as we are testing API here
       end
       RUBY
 
-      app_file 'app/controllers/posts_controller.rb', <<-RUBY
+      app_file "app/controllers/posts_controller.rb", <<-RUBY
       class PostsController < ApplicationController
         def create
           render text: params[:post].inspect
@@ -1020,14 +1020,14 @@ module ApplicationTests
         end
       RUBY
 
-      app 'development'
+      app "development"
 
       post "/posts.json", '{ "title": "foo", "name": "bar" }', "CONTENT_TYPE" => "application/json"
       assert_equal '<ActionController::Parameters {"title"=>"foo"} permitted: false>', last_response.body
     end
 
     test "config.action_controller.permit_all_parameters = true" do
-      app_file 'app/controllers/posts_controller.rb', <<-RUBY
+      app_file "app/controllers/posts_controller.rb", <<-RUBY
       class PostsController < ActionController::Base
         def create
           render text: params[:post].permitted? ? "permitted" : "forbidden"
@@ -1042,14 +1042,14 @@ module ApplicationTests
         config.action_controller.permit_all_parameters = true
       RUBY
 
-      app 'development'
+      app "development"
 
       post "/posts", {post: {"title" =>"zomg"}}
-      assert_equal 'permitted', last_response.body
+      assert_equal "permitted", last_response.body
     end
 
     test "config.action_controller.action_on_unpermitted_parameters = :raise" do
-      app_file 'app/controllers/posts_controller.rb', <<-RUBY
+      app_file "app/controllers/posts_controller.rb", <<-RUBY
       class PostsController < ActionController::Base
         def create
           render text: params.require(:post).permit(:name)
@@ -1064,7 +1064,7 @@ module ApplicationTests
         config.action_controller.action_on_unpermitted_parameters = :raise
       RUBY
 
-      app 'development'
+      app "development"
 
       assert_equal :raise, ActionController::Parameters.action_on_unpermitted_parameters
 
@@ -1073,7 +1073,7 @@ module ApplicationTests
     end
 
     test "config.action_controller.always_permitted_parameters are: controller, action by default" do
-      app 'development'
+      app "development"
       assert_equal %w(controller action), ActionController::Parameters.always_permitted_parameters
     end
 
@@ -1082,13 +1082,13 @@ module ApplicationTests
         config.action_controller.always_permitted_parameters = %w( controller action format )
       RUBY
 
-      app 'development'
+      app "development"
 
       assert_equal %w( controller action format ), ActionController::Parameters.always_permitted_parameters
     end
 
     test "config.action_controller.always_permitted_parameters = ['controller','action','format'] does not raise exception" do
-      app_file 'app/controllers/posts_controller.rb', <<-RUBY
+      app_file "app/controllers/posts_controller.rb", <<-RUBY
       class PostsController < ActionController::Base
         def create
           render text: params.permit(post: [:title])
@@ -1104,7 +1104,7 @@ module ApplicationTests
         config.action_controller.action_on_unpermitted_parameters = :raise
       RUBY
 
-      app 'development'
+      app "development"
 
       assert_equal :raise, ActionController::Parameters.action_on_unpermitted_parameters
 
@@ -1113,19 +1113,19 @@ module ApplicationTests
     end
 
     test "config.action_controller.action_on_unpermitted_parameters is :log by default on development" do
-      app 'development'
+      app "development"
 
       assert_equal :log, ActionController::Parameters.action_on_unpermitted_parameters
     end
 
     test "config.action_controller.action_on_unpermitted_parameters is :log by default on test" do
-      app 'test'
+      app "test"
 
       assert_equal :log, ActionController::Parameters.action_on_unpermitted_parameters
     end
 
     test "config.action_controller.action_on_unpermitted_parameters is false by default on production" do
-      app 'production'
+      app "production"
 
       assert_equal false, ActionController::Parameters.action_on_unpermitted_parameters
     end
@@ -1145,21 +1145,21 @@ module ApplicationTests
       end
 
       get "/", {}, "HTTP_ACCEPT" => "application/xml"
-      assert_equal 'HTML', last_response.body
+      assert_equal "HTML", last_response.body
 
       get "/", { format: :xml }, "HTTP_ACCEPT" => "application/xml"
-      assert_equal 'XML', last_response.body
+      assert_equal "XML", last_response.body
     end
 
     test "Rails.application#env_config exists and include some existing parameters" do
       make_basic_app
 
       assert_respond_to app, :env_config
-      assert_equal      app.env_config['action_dispatch.parameter_filter'],  app.config.filter_parameters
-      assert_equal      app.env_config['action_dispatch.show_exceptions'],   app.config.action_dispatch.show_exceptions
-      assert_equal      app.env_config['action_dispatch.logger'],            Rails.logger
-      assert_equal      app.env_config['action_dispatch.backtrace_cleaner'], Rails.backtrace_cleaner
-      assert_equal      app.env_config['action_dispatch.key_generator'],     Rails.application.key_generator
+      assert_equal      app.env_config["action_dispatch.parameter_filter"],  app.config.filter_parameters
+      assert_equal      app.env_config["action_dispatch.show_exceptions"],   app.config.action_dispatch.show_exceptions
+      assert_equal      app.env_config["action_dispatch.logger"],            Rails.logger
+      assert_equal      app.env_config["action_dispatch.backtrace_cleaner"], Rails.backtrace_cleaner
+      assert_equal      app.env_config["action_dispatch.key_generator"],     Rails.application.key_generator
     end
 
     test "config.colorize_logging default is true" do
@@ -1220,13 +1220,13 @@ module ApplicationTests
     test "config.active_record.dump_schema_after_migration is false on production" do
       build_app
 
-      app 'production'
+      app "production"
 
       assert_not ActiveRecord::Base.dump_schema_after_migration
     end
 
     test "config.active_record.dump_schema_after_migration is true by default on development" do
-      app 'development'
+      app "development"
 
       assert ActiveRecord::Base.dump_schema_after_migration
     end
@@ -1252,12 +1252,12 @@ module ApplicationTests
         end
       RUBY
 
-      app 'development'
+      app "development"
       assert_not Rails.configuration.ran_block
 
-      require 'rake'
-      require 'rake/testtask'
-      require 'rdoc/task'
+      require "rake"
+      require "rake/testtask"
+      require "rdoc/task"
 
       Rails.application.load_tasks
       assert Rails.configuration.ran_block
@@ -1274,7 +1274,7 @@ module ApplicationTests
         end
       RUBY
 
-      app 'development'
+      app "development"
       assert_not Rails.configuration.ran_block
 
       Rails.application.load_generators
@@ -1292,7 +1292,7 @@ module ApplicationTests
         end
       RUBY
 
-      app 'development'
+      app "development"
       assert_not Rails.configuration.ran_block
 
       Rails.application.load_console
@@ -1310,7 +1310,7 @@ module ApplicationTests
         end
       RUBY
 
-      app 'development'
+      app "development"
       assert_not Rails.configuration.ran_block
 
       Rails.application.load_runner
@@ -1318,7 +1318,7 @@ module ApplicationTests
     end
 
     test "loading the first existing database configuration available" do
-      app_file 'config/environments/development.rb', <<-RUBY
+      app_file "config/environments/development.rb", <<-RUBY
 
       Rails.application.configure do
         config.paths.add 'config/database', with: 'config/nonexistent.yml'
@@ -1326,44 +1326,44 @@ module ApplicationTests
         end
       RUBY
 
-      app 'development'
+      app "development"
 
       assert_kind_of Hash, Rails.application.config.database_configuration
     end
 
-    test 'raises with proper error message if no database configuration found' do
+    test "raises with proper error message if no database configuration found" do
       FileUtils.rm("#{app_path}/config/database.yml")
-      app 'development'
+      app "development"
       err = assert_raises RuntimeError do
         Rails.application.config.database_configuration
       end
-      assert_match 'config/database', err.message
+      assert_match "config/database", err.message
     end
 
-    test 'config.action_mailer.show_previews defaults to true in development' do
-      app 'development'
+    test "config.action_mailer.show_previews defaults to true in development" do
+      app "development"
 
       assert Rails.application.config.action_mailer.show_previews
     end
 
-    test 'config.action_mailer.show_previews defaults to false in production' do
-      app 'production'
+    test "config.action_mailer.show_previews defaults to false in production" do
+      app "production"
 
       assert_equal false, Rails.application.config.action_mailer.show_previews
     end
 
-    test 'config.action_mailer.show_previews can be set in the configuration file' do
+    test "config.action_mailer.show_previews can be set in the configuration file" do
       add_to_config <<-RUBY
         config.action_mailer.show_previews = true
       RUBY
 
-      app 'production'
+      app "production"
 
       assert_equal true, Rails.application.config.action_mailer.show_previews
     end
 
     test "config_for loads custom configuration from yaml files" do
-      app_file 'config/custom.yml', <<-RUBY
+      app_file "config/custom.yml", <<-RUBY
       development:
         key: 'custom key'
       RUBY
@@ -1372,13 +1372,13 @@ module ApplicationTests
         config.my_custom_config = config_for('custom')
       RUBY
 
-      app 'development'
+      app "development"
 
-      assert_equal 'custom key', Rails.application.config.my_custom_config['key']
+      assert_equal "custom key", Rails.application.config.my_custom_config["key"]
     end
 
     test "config_for uses the Pathname object if it is provided" do
-      app_file 'config/custom.yml', <<-RUBY
+      app_file "config/custom.yml", <<-RUBY
       development:
         key: 'custom key'
       RUBY
@@ -1387,9 +1387,9 @@ module ApplicationTests
         config.my_custom_config = config_for(Pathname.new(Rails.root.join("config/custom.yml")))
       RUBY
 
-      app 'development'
+      app "development"
 
-      assert_equal 'custom key', Rails.application.config.my_custom_config['key']
+      assert_equal "custom key", Rails.application.config.my_custom_config["key"]
     end
 
     test "config_for raises an exception if the file does not exist" do
@@ -1398,14 +1398,14 @@ module ApplicationTests
       RUBY
 
       exception = assert_raises(RuntimeError) do
-        app 'development'
+        app "development"
       end
 
       assert_equal "Could not load configuration. No such file - #{app_path}/config/custom.yml", exception.message
     end
 
     test "config_for without the environment configured returns an empty hash" do
-      app_file 'config/custom.yml', <<-RUBY
+      app_file "config/custom.yml", <<-RUBY
       test:
         key: 'custom key'
       RUBY
@@ -1414,26 +1414,26 @@ module ApplicationTests
         config.my_custom_config = config_for('custom')
       RUBY
 
-      app 'development'
+      app "development"
 
       assert_equal({}, Rails.application.config.my_custom_config)
     end
 
     test "config_for with empty file returns an empty hash" do
-      app_file 'config/custom.yml', <<-RUBY
+      app_file "config/custom.yml", <<-RUBY
       RUBY
 
       add_to_config <<-RUBY
         config.my_custom_config = config_for('custom')
       RUBY
 
-      app 'development'
+      app "development"
 
       assert_equal({}, Rails.application.config.my_custom_config)
     end
 
     test "config_for containing ERB tags should evaluate" do
-      app_file 'config/custom.yml', <<-RUBY
+      app_file "config/custom.yml", <<-RUBY
       development:
         key: <%= 'custom key' %>
       RUBY
@@ -1442,13 +1442,13 @@ module ApplicationTests
         config.my_custom_config = config_for('custom')
       RUBY
 
-      app 'development'
+      app "development"
 
-      assert_equal 'custom key', Rails.application.config.my_custom_config['key']
+      assert_equal "custom key", Rails.application.config.my_custom_config["key"]
     end
 
     test "config_for with syntax error show a more descriptive exception" do
-      app_file 'config/custom.yml', <<-RUBY
+      app_file "config/custom.yml", <<-RUBY
       development:
         key: foo:
       RUBY
@@ -1458,14 +1458,14 @@ module ApplicationTests
       RUBY
 
       exception = assert_raises(RuntimeError) do
-        app 'development'
+        app "development"
       end
 
-      assert_match 'YAML syntax error occurred while parsing', exception.message
+      assert_match "YAML syntax error occurred while parsing", exception.message
     end
 
     test "config_for allows overriding the environment" do
-      app_file 'config/custom.yml', <<-RUBY
+      app_file "config/custom.yml", <<-RUBY
         test:
           key: 'walrus'
         production:
@@ -1477,11 +1477,11 @@ module ApplicationTests
       RUBY
       require "#{app_path}/config/environment"
 
-      assert_equal 'unicorn', Rails.application.config.my_custom_config['key']
+      assert_equal "unicorn", Rails.application.config.my_custom_config["key"]
     end
 
     test "api_only is false by default" do
-      app 'development'
+      app "development"
       refute Rails.application.config.api_only
     end
 
@@ -1489,7 +1489,7 @@ module ApplicationTests
       add_to_config <<-RUBY
         config.api_only = true
       RUBY
-      app 'development'
+      app "development"
 
       Rails.application.load_generators
       assert Rails.configuration.api_only
@@ -1499,7 +1499,7 @@ module ApplicationTests
       add_to_config <<-RUBY
         config.api_only = true
       RUBY
-      app 'development'
+      app "development"
 
       assert_equal :api, Rails.configuration.debug_exception_response_format
     end
@@ -1509,13 +1509,13 @@ module ApplicationTests
         config.api_only = true
       RUBY
 
-      app_file 'config/environments/development.rb', <<-RUBY
+      app_file "config/environments/development.rb", <<-RUBY
       Rails.application.configure do
         config.debug_exception_response_format = :default
       end
       RUBY
 
-      app 'development'
+      app "development"
 
       assert_equal :default, Rails.configuration.debug_exception_response_format
     end