Merge branch 'master' of github.com:lifo/docrails

84 files changed, 1231 insertions, 574 deletions

diff --git a/railties/CHANGELOG.md b/railties/CHANGELOG.md
index cc9722e59c..21ac596ab9 100644
--- a/railties/CHANGELOG.md
+++ b/railties/CHANGELOG.md
@@ -1,3 +1,92 @@
+*   Remove turbolinks when generating a new application based on a template that skips it.
+
+    Example:
+
+        Skips turbolinks adding `add_gem_entry_filter { |gem| gem.name != "turbolinks" }`
+        to the template.
+
+    *Lauro Caetano*
+
+*   Instrument an `load_config_initializer.railties` event on each load of configuration initializer
+    from `config/initializers`. Subscribers should be attached before `load_config_initializers`
+    initializer completed.
+
+    Registering subscriber examples:
+
+        # config/application.rb
+        module RailsApp
+          class Application < Rails::Application
+            ActiveSupport::Notifications.subscribe('load_config_initializer.railties') do |*args|
+              event = ActiveSupport::Notifications::Event.new(*args)
+              puts "Loaded initializer #{event.payload[:initializer]} (#{event.duration}ms)"
+            end
+          end
+        end
+
+        # my_engine/lib/my_engine/engine.rb
+        module MyEngine
+          class Engine < ::Rails::Engine
+            config.before_initialize do
+              ActiveSupport::Notifications.subscribe('load_config_initializer.railties') do |*args|
+                event = ActiveSupport::Notifications::Event.new(*args)
+                puts "Loaded initializer #{event.payload[:initializer]} (#{event.duration}ms)"
+              end
+            end
+          end
+        end
+
+    *Paul Nikitochkin*
+
+*   Support for Pathnames in eager load paths.
+
+    *Mike Pack*
+
+*   Fixed missing line and shadow on service pages(404, 422, 500).
+
+    *Dmitry Korotkov*
+
+*   `BACKTRACE` environment variable to show unfiltered backtraces for
+    test failures.
+
+    Example:
+
+        $ BACKTRACE=1 ruby -Itest ...
+        # or with rake
+        $ BACKTRACE=1 bin/rake
+
+    *Yves Senn*
+
+*   Removal of all javascript stuff (gems and files) when generating a new
+    application using the `--skip-javascript` option.
+
+    *Robin Dupret*
+
+*   Make the application name snake cased when it contains spaces
+
+    The application name is used to fill the `database.yml` and
+    `session_store.rb` files ; previously, if the provided name
+    contained whitespaces, it led to unexpected names in these files.
+
+    *Robin Dupret*
+
+*   Added `--model-name` option to `ScaffoldControllerGenerator`.
+
+    *yalab*
+
+*   Expose MiddlewareStack#unshift to environment configuration.
+
+    *Ben Pickles*
+
+*   `rails server` will only extend the logger to output to STDOUT
+     in development environment.
+
+    *Richard Schneeman*
+
+*   Don't require passing path to app before options in `rails new`
+    and `rails plugin new`
+
+    *Piotr Sarnacki*
+
 *   rake notes now searches *.less files
 
     *Josh Crowder*
@@ -5,21 +94,21 @@
 *   Generate nested route for namespaced controller generated using
     `rails g controller`.
     Fixes #11532.
-    
+
     Example:
-    
+
         rails g controller admin/dashboard index
-        
+
         # Before:
         get "dashboard/index"
-        
+
         # After:
         namespace :admin do
           get "dashboard/index"
         end
-    
+
     *Prathamesh Sonpatki*
-    
+
 *   Fix the event name of action_dispatch requests.
 
     *Rafael Mendonça França*
diff --git a/railties/bin/rails b/railties/bin/rails
index b3026e8a93..82c17cabce 100755
--- a/railties/bin/rails
+++ b/railties/bin/rails
@@ -1,8 +1,8 @@
 #!/usr/bin/env ruby
 
-git_path = File.join(File.expand_path('../../..', __FILE__), '.git')
+git_path = File.expand_path('../../../.git', __FILE__)
 
-if File.exists?(git_path)
+if File.exist?(git_path)
   railties_path = File.expand_path('../../lib', __FILE__)
   $:.unshift(railties_path)
 end
diff --git a/railties/lib/rails/api/task.rb b/railties/lib/rails/api/task.rb
index 1f9568fb5f..3e32576040 100644
--- a/railties/lib/rails/api/task.rb
+++ b/railties/lib/rails/api/task.rb
@@ -16,8 +16,7 @@ module Rails
           :include => %w(
             README.rdoc
             lib/active_record/**/*.rb
-          ),
-          :exclude => 'lib/active_record/vendor/*'
+          )
         },
 
         'activemodel' => {
@@ -33,23 +32,22 @@ module Rails
             lib/abstract_controller/**/*.rb
             lib/action_controller/**/*.rb
             lib/action_dispatch/**/*.rb
-          ),
-          :exclude => 'lib/action_controller/vendor/*'
+          )
         },
 
         'actionview' => {
           :include => %w(
             README.rdoc
             lib/action_view/**/*.rb
-          )
+          ),
+          :exclude => 'lib/action_view/vendor/*'
         },
 
         'actionmailer' => {
           :include => %w(
             README.rdoc
             lib/action_mailer/**/*.rb
-          ),
-          :exclude => 'lib/action_mailer/vendor/*'
+          )
         },
 
         'railties' => {
diff --git a/railties/lib/rails/app_rails_loader.rb b/railties/lib/rails/app_rails_loader.rb
index 4a17803f1c..1610751844 100644
--- a/railties/lib/rails/app_rails_loader.rb
+++ b/railties/lib/rails/app_rails_loader.rb
@@ -2,7 +2,7 @@ require 'pathname'
 
 module Rails
   module AppRailsLoader
-    RUBY = File.join(*RbConfig::CONFIG.values_at("bindir", "ruby_install_name")) + RbConfig::CONFIG["EXEEXT"]
+    RUBY = Gem.ruby
     EXECUTABLES = ['bin/rails', 'script/rails']
     BUNDLER_WARNING = <<EOS
 Looks like your app's ./bin/rails is a stub that was generated by Bundler.
@@ -49,13 +49,13 @@ EOS
         # call to generate a new application, so restore the original cwd.
         Dir.chdir(original_cwd) and return if Pathname.new(Dir.pwd).root?
 
-        # Otherwise keep moving upwards in search of a executable.
+        # Otherwise keep moving upwards in search of an executable.
         Dir.chdir('..')
       end
     end
 
     def self.find_executable
-      EXECUTABLES.find { |exe| File.exists?(exe) }
+      EXECUTABLES.find { |exe| File.exist?(exe) }
     end
   end
 end
diff --git a/railties/lib/rails/application.rb b/railties/lib/rails/application.rb
index 4faaf5ef1e..d1e88cfafd 100644
--- a/railties/lib/rails/application.rb
+++ b/railties/lib/rails/application.rb
@@ -223,7 +223,7 @@ module Rails
     # you need to load files in lib/ during the application configuration as well.
     def add_lib_to_load_path! #:nodoc:
       path = File.join config.root, 'lib'
-      if File.exists?(path) && !$LOAD_PATH.include?(path)
+      if File.exist?(path) && !$LOAD_PATH.include?(path)
         $LOAD_PATH.unshift(path)
       end
     end
diff --git a/railties/lib/rails/application/configuration.rb b/railties/lib/rails/application/configuration.rb
index 7332444ab9..dd0b9c6d70 100644
--- a/railties/lib/rails/application/configuration.rb
+++ b/railties/lib/rails/application/configuration.rb
@@ -90,7 +90,7 @@ module Rails
       # Loads and returns the configuration of the database.
       def database_configuration
         yaml = paths["config/database"].first
-        if File.exists?(yaml)
+        if File.exist?(yaml)
           require "erb"
           YAML.load ERB.new(IO.read(yaml)).result
         elsif ENV['DATABASE_URL']
diff --git a/railties/lib/rails/cli.rb b/railties/lib/rails/cli.rb
index 20313a2608..dd70c272c6 100644
--- a/railties/lib/rails/cli.rb
+++ b/railties/lib/rails/cli.rb
@@ -1,4 +1,3 @@
-require 'rbconfig'
 require 'rails/app_rails_loader'
 
 # If we are inside a Rails application this method performs an exec and thus
diff --git a/railties/lib/rails/commands/application.rb b/railties/lib/rails/commands/application.rb
index 678697f09b..c998e6b6a8 100644
--- a/railties/lib/rails/commands/application.rb
+++ b/railties/lib/rails/commands/application.rb
@@ -13,5 +13,5 @@ module Rails
   end
 end
 
-Rails::Generators::AppPreparer.new(ARGV).prepare!
-Rails::Generators::AppGenerator.start
+args = Rails::Generators::ARGVScrubber.new(ARGV).prepare!
+Rails::Generators::AppGenerator.start args
diff --git a/railties/lib/rails/commands/commands_tasks.rb b/railties/lib/rails/commands/commands_tasks.rb
index 11524c4ef5..de60423784 100644
--- a/railties/lib/rails/commands/commands_tasks.rb
+++ b/railties/lib/rails/commands/commands_tasks.rb
@@ -51,6 +51,10 @@ EOT
       generate_or_destroy(:generate)
     end
 
+    def destroy
+      generate_or_destroy(:destroy)
+    end
+
     def console
       require_command!("console")
       options = Rails::Console.parse_arguments(argv)
@@ -135,7 +139,7 @@ EOT
       # This allows us to run `rails server` from other directories, but still get
       # the main config.ru and properly set the tmp directory.
       def set_application_directory!
-        Dir.chdir(File.expand_path('../../', APP_PATH)) unless File.exists?(File.expand_path("config.ru"))
+        Dir.chdir(File.expand_path('../../', APP_PATH)) unless File.exist?(File.expand_path("config.ru"))
       end
 
       def require_application_and_environment!
diff --git a/railties/lib/rails/commands/runner.rb b/railties/lib/rails/commands/runner.rb
index 2b77d5d387..dd2ee5639e 100644
--- a/railties/lib/rails/commands/runner.rb
+++ b/railties/lib/rails/commands/runner.rb
@@ -50,5 +50,5 @@ elsif File.exist?(code_or_file)
   $0 = code_or_file
   Kernel.load code_or_file
 else
-  eval(code_or_file)
+  eval(code_or_file, binding, __FILE__, __LINE__)
 end
diff --git a/railties/lib/rails/commands/server.rb b/railties/lib/rails/commands/server.rb
index 87d6505ed5..fec4962fb5 100644
--- a/railties/lib/rails/commands/server.rb
+++ b/railties/lib/rails/commands/server.rb
@@ -1,6 +1,7 @@
 require 'fileutils'
 require 'optparse'
 require 'action_dispatch'
+require 'rails'
 
 module Rails
   class Server < ::Rack::Server
@@ -21,7 +22,7 @@ module Rails
           opts.on("-e", "--environment=name", String,
                   "Specifies the environment to run this server under (test/development/production).",
                   "Default: development") { |v| options[:environment] = v }
-          opts.on("-P","--pid=pid",String,
+          opts.on("-P", "--pid=pid", String,
                   "Specifies the PID file.",
                   "Default: tmp/pids/server.pid") { |v| options[:pid] = v }
 
@@ -32,7 +33,8 @@ module Rails
 
         opt_parser.parse! args
 
-        options[:server] = args.shift
+        options[:log_stdout] = options[:daemonize].blank? && (options[:environment] || Rails.env) == "development"
+        options[:server]     = args.shift
         options
       end
     end
@@ -59,30 +61,10 @@ module Rails
     end
 
     def start
-      url = "#{options[:SSLEnable] ? 'https' : 'http'}://#{options[:Host]}:#{options[:Port]}"
-      puts "=> Booting #{ActiveSupport::Inflector.demodulize(server)}"
-      puts "=> Rails #{Rails.version} application starting in #{Rails.env} on #{url}"
-      puts "=> Run `rails server -h` for more startup options"
-      if options[:Host].to_s.match(/0\.0\.0\.0/)
-        puts "=> Notice: server is listening on all interfaces (#{options[:Host]}). Consider using 127.0.0.1 (--binding option)"
-      end
+      print_boot_information
       trap(:INT) { exit }
-      puts "=> Ctrl-C to shutdown server" unless options[:daemonize]
-
-      #Create required tmp directories if not found
-      %w(cache pids sessions sockets).each do |dir_to_make|
-        FileUtils.mkdir_p(File.join(Rails.root, 'tmp', dir_to_make))
-      end
-
-      unless options[:daemonize]
-        wrapped_app # touch the app so the logger is set up
-
-        console = ActiveSupport::Logger.new($stdout)
-        console.formatter = Rails.logger.formatter
-        console.level = Rails.logger.level
-
-        Rails.logger.extend(ActiveSupport::Logger.broadcast(console))
-      end
+      create_tmp_directories
+      log_to_stdout if options[:log_stdout]
 
       super
     ensure
@@ -93,7 +75,7 @@ module Rails
 
     def middleware
       middlewares = []
-      middlewares << [Rails::Rack::Debugger]  if options[:debugger]
+      middlewares << [Rails::Rack::Debugger] if options[:debugger]
       middlewares << [::Rack::ContentLength]
 
       # FIXME: add Rack::Lock in the case people are using webrick.
@@ -113,14 +95,45 @@ module Rails
 
     def default_options
       super.merge({
-        Port:         3000,
-        DoNotReverseLookup:  true,
-        environment:  (ENV['RAILS_ENV'] || ENV['RACK_ENV'] || "development").dup,
-        daemonize:    false,
-        debugger:     false,
-        pid:          File.expand_path("tmp/pids/server.pid"),
-        config:       File.expand_path("config.ru")
+        Port:               3000,
+        DoNotReverseLookup: true,
+        environment:        (ENV['RAILS_ENV'] || ENV['RACK_ENV'] || "development").dup,
+        daemonize:          false,
+        debugger:           false,
+        pid:                File.expand_path("tmp/pids/server.pid"),
+        config:             File.expand_path("config.ru")
       })
     end
+
+    private
+
+      def print_boot_information
+        url = "#{options[:SSLEnable] ? 'https' : 'http'}://#{options[:Host]}:#{options[:Port]}"
+        puts "=> Booting #{ActiveSupport::Inflector.demodulize(server)}"
+        puts "=> Rails #{Rails.version} application starting in #{Rails.env} on #{url}"
+        puts "=> Run `rails server -h` for more startup options"
+
+        if options[:Host].to_s.match(/0\.0\.0\.0/)
+          puts "=> Notice: server is listening on all interfaces (#{options[:Host]}). Consider using 127.0.0.1 (--binding option)"
+        end
+
+        puts "=> Ctrl-C to shutdown server" unless options[:daemonize]
+      end
+
+      def create_tmp_directories
+        %w(cache pids sessions sockets).each do |dir_to_make|
+          FileUtils.mkdir_p(File.join(Rails.root, 'tmp', dir_to_make))
+        end
+      end
+
+      def log_to_stdout
+        wrapped_app # touch the app so the logger is set up
+
+        console = ActiveSupport::Logger.new($stdout)
+        console.formatter = Rails.logger.formatter
+        console.level = Rails.logger.level
+
+        Rails.logger.extend(ActiveSupport::Logger.broadcast(console))
+      end
   end
 end
diff --git a/railties/lib/rails/configuration.rb b/railties/lib/rails/configuration.rb
index c694513960..f5d7dede66 100644
--- a/railties/lib/rails/configuration.rb
+++ b/railties/lib/rails/configuration.rb
@@ -59,6 +59,10 @@ module Rails
         @operations << [__method__, args, block]
       end
 
+      def unshift(*args, &block)
+        @operations << [__method__, args, block]
+      end
+
       def merge_into(other) #:nodoc:
         @operations.each do |operation, args, block|
           other.send(operation, *args, &block)
diff --git a/railties/lib/rails/engine.rb b/railties/lib/rails/engine.rb
index f25f629aa5..54a0f1c002 100644
--- a/railties/lib/rails/engine.rb
+++ b/railties/lib/rails/engine.rb
@@ -260,7 +260,7 @@ module Rails
   #
   #   class FooController < ApplicationController
   #     def index
-  #       my_engine.root_url #=> /my_engine/
+  #       my_engine.root_url # => /my_engine/
   #     end
   #   end
   #
@@ -269,7 +269,7 @@ module Rails
   #   module MyEngine
   #     class BarController
   #       def index
-  #         main_app.foo_path #=> /foo
+  #         main_app.foo_path # => /foo
   #       end
   #     end
   #   end
@@ -351,8 +351,13 @@ module Rails
           Rails::Railtie::Configuration.eager_load_namespaces << base
 
           base.called_from = begin
-            # Remove the line number from backtraces making sure we don't leave anything behind
-            call_stack = caller.map { |p| p.sub(/:\d+.*/, '') }
+            call_stack = if Kernel.respond_to?(:caller_locations)
+              caller_locations.map(&:path)
+            else
+              # Remove the line number from backtraces making sure we don't leave anything behind
+              caller.map { |p| p.sub(/:\d+.*/, '') }
+            end
+
             File.dirname(call_stack.detect { |p| p !~ %r[railties[\w.-]*/lib/rails|rack[\w.-]*/lib/rack] })
           end
         end
@@ -460,7 +465,7 @@ module Rails
     # files inside eager_load paths.
     def eager_load!
       config.eager_load_paths.each do |load_path|
-        matcher = /\A#{Regexp.escape(load_path)}\/(.*)\.rb\Z/
+        matcher = /\A#{Regexp.escape(load_path.to_s)}\/(.*)\.rb\Z/
         Dir.glob("#{load_path}/**/*.rb").sort.each do |file|
           require_dependency file.sub(matcher, '\1')
         end
@@ -606,7 +611,7 @@ module Rails
 
     initializer :load_config_initializers do
       config.paths["config/initializers"].existent.sort.each do |initializer|
-        load(initializer)
+        load_config_initializer(initializer)
       end
     end
 
@@ -640,6 +645,12 @@ module Rails
 
     protected
 
+    def load_config_initializer(initializer)
+      ActiveSupport::Notifications.instrument('load_config_initializer.railties', initializer: initializer) do
+        load(initializer)
+      end
+    end
+
     def run_tasks_blocks(*) #:nodoc:
       super
       paths["lib/tasks"].existent.sort.each { |ext| load(ext) }
diff --git a/railties/lib/rails/engine/railties.rb b/railties/lib/rails/engine/railties.rb
index 595256f36a..9969a1475d 100644
--- a/railties/lib/rails/engine/railties.rb
+++ b/railties/lib/rails/engine/railties.rb
@@ -16,8 +16,6 @@ module Rails
       def -(others)
         _all - others
       end
-
-      delegate :engines, to: "self.class"
     end
   end
 end
diff --git a/railties/lib/rails/generators.rb b/railties/lib/rails/generators.rb
index 6b34db3e3f..dce734b54e 100644
--- a/railties/lib/rails/generators.rb
+++ b/railties/lib/rails/generators.rb
@@ -1,6 +1,8 @@
 activesupport_path = File.expand_path('../../../../activesupport/lib', __FILE__)
 $:.unshift(activesupport_path) if File.directory?(activesupport_path) && !$:.include?(activesupport_path)
 
+require 'thor/group'
+
 require 'active_support'
 require 'active_support/core_ext/object/blank'
 require 'active_support/core_ext/kernel/singleton_class'
@@ -9,12 +11,11 @@ require 'active_support/core_ext/hash/deep_merge'
 require 'active_support/core_ext/module/attribute_accessors'
 require 'active_support/core_ext/string/inflections'
 
-require 'rails/generators/base'
-
 module Rails
   module Generators
     autoload :Actions,         'rails/generators/actions'
     autoload :ActiveModel,     'rails/generators/active_model'
+    autoload :Base,            'rails/generators/base'
     autoload :Migration,       'rails/generators/migration'
     autoload :NamedBase,       'rails/generators/named_base'
     autoload :ResourceHelpers, 'rails/generators/resource_helpers'
diff --git a/railties/lib/rails/generators/app_base.rb b/railties/lib/rails/generators/app_base.rb
index fb495c918c..2022b4ed3d 100644
--- a/railties/lib/rails/generators/app_base.rb
+++ b/railties/lib/rails/generators/app_base.rb
@@ -1,10 +1,10 @@
 require 'digest/md5'
-require 'securerandom'
 require 'active_support/core_ext/string/strip'
 require 'rails/version' unless defined?(Rails::VERSION)
-require 'rbconfig'
 require 'open-uri'
 require 'uri'
+require 'rails/generators'
+require 'active_support/core_ext/array/extract_options'
 
 module Rails
   module Generators
@@ -18,6 +18,10 @@ module Rails
 
       argument :app_path, type: :string
 
+      def self.strict_args_position
+        false
+      end
+
       def self.add_shared_options_for(name)
         class_option :template,           type: :string, aliases: '-m',
                                           desc: "Path to some #{name} template (can be a filesystem path or URL)"
@@ -72,13 +76,48 @@ module Rails
       end
 
       def initialize(*args)
-        @original_wd = Dir.pwd
+        @original_wd   = Dir.pwd
+        @gem_filter    = lambda { |gem| true }
+        @extra_entries = []
         super
         convert_database_option_for_jruby
       end
 
     protected
 
+      def gemfile_entry(name, *args)
+        options = args.extract_options!
+        version = args.first
+        github = options[:github]
+        path   = options[:path]
+
+        if github
+          @extra_entries << GemfileEntry.github(name, github)
+        elsif path
+          @extra_entries << GemfileEntry.path(name, path)
+        else
+          @extra_entries << GemfileEntry.version(name, version)
+        end
+        self
+      end
+
+      def gemfile_entries
+        [ rails_gemfile_entry,
+          database_gemfile_entry,
+          assets_gemfile_entry,
+          javascript_gemfile_entry,
+          jbuilder_gemfile_entry,
+          sdoc_gemfile_entry,
+          platform_dependent_gemfile_entry,
+          @extra_entries].flatten.find_all(&@gem_filter)
+      end
+
+      def add_gem_entry_filter
+        @gem_filter = lambda { |next_filter, entry|
+          yield(entry) && next_filter.call(entry)
+        }.curry[@gem_filter]
+      end
+
       def builder
         @builder ||= begin
           builder_class = get_builder_class
@@ -92,21 +131,81 @@ module Rails
       end
 
       def create_root
-        self.destination_root = File.expand_path(app_path, destination_root)
         valid_const?
 
         empty_directory '.'
-        set_default_accessors!
         FileUtils.cd(destination_root) unless options[:pretend]
       end
 
+      class TemplateRecorder < ::BasicObject # :nodoc:
+        attr_reader :gems
+
+        def initialize(target)
+          @target         = target
+          # unfortunately, instance eval has access to these ivars
+          @app_const      = target.send :app_const if target.respond_to?(:app_const, true)
+          @app_const_base = target.send :app_const_base if target.respond_to?(:app_const_base, true)
+          @app_name       = target.send :app_name if target.respond_to?(:app_name, true)
+          @commands       = []
+          @gems           = []
+        end
+
+        def gemfile_entry(*args)
+          @target.send :gemfile_entry, *args
+        end
+
+        def add_gem_entry_filter(*args, &block)
+          @target.send :add_gem_entry_filter, *args, &block
+        end
+
+        def method_missing(name, *args, &block)
+          @commands << [name, args, block]
+        end
+
+        def respond_to_missing?(method, priv = false)
+          super || @target.respond_to?(method, priv)
+        end
+
+        def replay!
+          @commands.each do |name, args, block|
+            @target.send name, *args, &block
+          end
+        end
+      end
+
       def apply_rails_template
-        apply rails_template if rails_template
+        @recorder = TemplateRecorder.new self
+
+        apply(rails_template, target: @recorder) if rails_template
       rescue Thor::Error, LoadError, Errno::ENOENT => e
         raise Error, "The template [#{rails_template}] could not be loaded. Error: #{e}"
       end
 
+      def replay_template
+        @recorder.replay! if @recorder
+      end
+
+      def apply(path, config={})
+        verbose = config.fetch(:verbose, true)
+        target  = config.fetch(:target, self)
+        is_uri  = path =~ /^https?\:\/\//
+        path    = find_in_source_paths(path) unless is_uri
+
+        say_status :apply, path, verbose
+        shell.padding += 1 if verbose
+
+        if is_uri
+          contents = open(path, "Accept" => "application/x-thor-template") {|io| io.read }
+        else
+          contents = open(path) {|io| io.read }
+        end
+
+        target.instance_eval(contents, path)
+        shell.padding -= 1 if verbose
+      end
+
       def set_default_accessors!
+        self.destination_root = File.expand_path(app_path, destination_root)
         self.rails_template = case options[:template]
           when /^https?:\/\//
             options[:template]
@@ -118,11 +217,9 @@ module Rails
       end
 
       def database_gemfile_entry
-        options[:skip_active_record] ? "" :
-          <<-GEMFILE.strip_heredoc
-            # Use #{options[:database]} as the database for Active Record
-            gem '#{gem_for_database}'
-          GEMFILE
+        return [] if options[:skip_active_record]
+        GemfileEntry.version gem_for_database, nil,
+                            "Use #{options[:database]} as the database for Active Record"
       end
 
       def include_all_railties?
@@ -133,22 +230,39 @@ module Rails
         options[value] ? '# ' : ''
       end
 
+      class GemfileEntry < Struct.new(:name, :version, :comment, :options, :commented_out)
+        def initialize(name, version, comment, options = {}, commented_out = false)
+          super
+        end
+
+        def self.github(name, github, comment = nil)
+          new(name, nil, comment, github: github)
+        end
+
+        def self.version(name, version, comment = nil)
+          new(name, version, comment)
+        end
+
+        def self.path(name, path, comment = nil)
+          new(name, nil, comment, path: path)
+        end
+
+        def padding(max_width)
+          ' ' * (max_width - name.length + 2)
+        end
+      end
+
       def rails_gemfile_entry
         if options.dev?
-          <<-GEMFILE.strip_heredoc
-            gem 'rails',     path: '#{Rails::Generators::RAILS_DEV_PATH}'
-            gem 'arel',      github: 'rails/arel'
-          GEMFILE
+          [GemfileEntry.path('rails', Rails::Generators::RAILS_DEV_PATH),
+           GemfileEntry.github('arel', 'rails/arel')]
         elsif options.edge?
-          <<-GEMFILE.strip_heredoc
-            gem 'rails',     github: 'rails/rails'
-            gem 'arel',      github: 'rails/arel'
-          GEMFILE
+          [GemfileEntry.github('rails', 'rails/rails'),
+           GemfileEntry.github('arel', 'rails/arel')]
         else
-          <<-GEMFILE.strip_heredoc
-            # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
-            gem 'rails', '#{Rails::VERSION::STRING}'
-          GEMFILE
+          [GemfileEntry.version('rails',
+                            Rails::VERSION::STRING,
+                            "Bundle edge Rails instead: gem 'rails', github: 'rails/rails'")]
         end
       end
 
@@ -180,77 +294,75 @@ module Rails
       end
 
       def assets_gemfile_entry
-        return if options[:skip_sprockets]
-
-        gemfile = if options.dev? || options.edge?
-          <<-GEMFILE.strip_heredoc
-            # Use edge version of sprockets-rails
-            gem 'sprockets-rails', github: 'rails/sprockets-rails'
+        return [] if options[:skip_sprockets]
 
-            # Use SCSS for stylesheets
-            gem 'sass-rails', github: 'rails/sass-rails'
-          GEMFILE
+        gems = []
+        if options.dev? || options.edge?
+          gems << GemfileEntry.github('sprockets-rails', 'rails/sprockets-rails',
+                                    'Use edge version of sprockets-rails')
+          gems << GemfileEntry.github('sass-rails', 'rails/sass-rails',
+                                    'Use SCSS for stylesheets')
         else
-          <<-GEMFILE.strip_heredoc
-            # Use SCSS for stylesheets
-            gem 'sass-rails', '~> 4.0.0.rc1'
-          GEMFILE
+          gems << GemfileEntry.version('sass-rails',
+                                     '~> 4.0.0.rc1',
+                                     'Use SCSS for stylesheets')
         end
 
-        gemfile += <<-GEMFILE.strip_heredoc
+        gems << GemfileEntry.version('uglifier',
+                                   '>= 1.3.0',
+                                   'Use Uglifier as compressor for JavaScript assets')
 
-          # Use Uglifier as compressor for JavaScript assets
-          gem 'uglifier', '>= 1.3.0'
-        GEMFILE
+        gems
+      end
 
-        if options[:skip_javascript]
-          gemfile += <<-GEMFILE
-            #{coffee_gemfile_entry}
-            #{javascript_runtime_gemfile_entry}
-          GEMFILE
+      def platform_dependent_gemfile_entry
+        gems = []
+        if RUBY_ENGINE == 'rbx'
+          gems << GemfileEntry.version('rubysl', nil)
         end
+        gems
+      end
+
+      def jbuilder_gemfile_entry
+        comment = 'Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder'
+        GemfileEntry.version('jbuilder', '~> 1.2', comment)
+      end
 
-        gemfile.gsub(/^[ \t]+/, '')
+      def sdoc_gemfile_entry
+        comment = 'bundle exec rake doc:rails generates the API under doc/api.'
+        GemfileEntry.new('sdoc', nil, comment, { group: :doc, require: false })
       end
 
       def coffee_gemfile_entry
+        comment = 'Use CoffeeScript for .js.coffee assets and views'
         if options.dev? || options.edge?
-          <<-GEMFILE
-            # Use CoffeeScript for .js.coffee assets and views
-            gem 'coffee-rails', github: 'rails/coffee-rails'
-          GEMFILE
+          GemfileEntry.github 'coffee-rails', 'rails/coffee-rails', comment
         else
-          <<-GEMFILE
-            # Use CoffeeScript for .js.coffee assets and views
-            gem 'coffee-rails', '~> 4.0.0'
-          GEMFILE
+          GemfileEntry.version 'coffee-rails', '~> 4.0.0', comment
         end
       end
 
       def javascript_gemfile_entry
-        unless options[:skip_javascript]
-          <<-GEMFILE.gsub(/^[ \t]+/, '')
-            #{coffee_gemfile_entry}
-            #{javascript_runtime_gemfile_entry}
-            # Use #{options[:javascript]} as the JavaScript library
-            gem '#{options[:javascript]}-rails'
-
-            # Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
-            gem 'turbolinks'
-          GEMFILE
+        if options[:skip_javascript]
+          []
+        else
+          gems = [coffee_gemfile_entry, javascript_runtime_gemfile_entry]
+          gems << GemfileEntry.version("#{options[:javascript]}-rails", nil,
+                                 "Use #{options[:javascript]} as the JavaScript library")
+
+          gems << GemfileEntry.version("turbolinks", nil,
+            "Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks")
+          gems
         end
       end
 
       def javascript_runtime_gemfile_entry
-        runtime = if defined?(JRUBY_VERSION)
-          "gem 'therubyrhino'"
+        comment = 'See https://github.com/sstephenson/execjs#readme for more supported runtimes'
+        if defined?(JRUBY_VERSION)
+          GemfileEntry.version 'therubyrhino', nil, comment
         else
-          "# gem 'therubyracer', platforms: :ruby"
+          GemfileEntry.new 'therubyracer', nil, comment, { platforms: :ruby }, true
         end
-        <<-GEMFILE
-          # See https://github.com/sstephenson/execjs#readme for more supported runtimes
-          #{runtime}
-        GEMFILE
       end
 
       def bundle_command(command)
diff --git a/railties/lib/rails/generators/base.rb b/railties/lib/rails/generators/base.rb
index 8aec8bc8f9..67bab96a22 100644
--- a/railties/lib/rails/generators/base.rb
+++ b/railties/lib/rails/generators/base.rb
@@ -7,8 +7,6 @@ rescue LoadError
   exit
 end
 
-require 'rails/generators/actions'
-
 module Rails
   module Generators
     class Error < Thor::Error # :nodoc:
@@ -211,7 +209,7 @@ module Rails
         return unless base_name && generator_name
         return unless default_generator_root
         path = File.join(default_generator_root, 'templates')
-        path if File.exists?(path)
+        path if File.exist?(path)
       end
 
       # Returns the base root for a common set of generators. This is used to dynamically
@@ -298,7 +296,7 @@ module Rails
           end
         end
 
-        # Return the default value for the option name given doing a lookup in
+        # Returns the default value for the option name given doing a lookup in
         # Rails::Generators.options.
         def self.default_value_for_option(name, options)
           default_for_option(Rails::Generators.options, name, options, options[:default])
@@ -368,12 +366,12 @@ module Rails
             source_root && File.expand_path("../USAGE", source_root),
             default_generator_root && File.join(default_generator_root, "USAGE")
           ]
-          paths.compact.detect { |path| File.exists? path }
+          paths.compact.detect { |path| File.exist? path }
         end
 
         def self.default_generator_root
           path = File.expand_path(File.join(base_name, generator_name), base_root)
-          path if File.exists?(path)
+          path if File.exist?(path)
         end
 
     end
diff --git a/railties/lib/rails/generators/named_base.rb b/railties/lib/rails/generators/named_base.rb
index e712c747b0..5a92ab3e95 100644
--- a/railties/lib/rails/generators/named_base.rb
+++ b/railties/lib/rails/generators/named_base.rb
@@ -90,7 +90,7 @@ module Rails
         end
 
         def namespaced_path
-          @namespaced_path ||= namespace.name.split("::").map {|m| m.underscore }[0]
+          @namespaced_path ||= namespace.name.split("::").first.underscore
         end
 
         def class_name
diff --git a/railties/lib/rails/generators/rails/app/app_generator.rb b/railties/lib/rails/generators/rails/app/app_generator.rb
index 041bfcb733..a2023886cd 100644
--- a/railties/lib/rails/generators/rails/app/app_generator.rb
+++ b/railties/lib/rails/generators/rails/app/app_generator.rb
@@ -129,7 +129,9 @@ module Rails
     end
 
     def vendor_javascripts
-      empty_directory_with_keep_file 'vendor/assets/javascripts'
+      unless options[:skip_javascript]
+        empty_directory_with_keep_file 'vendor/assets/javascripts'
+      end
     end
 
     def vendor_stylesheets
@@ -151,23 +153,19 @@ module Rails
                              desc: "Show Rails version number and quit"
 
       def initialize(*args)
-        if args[0].blank?
-          if args[1].blank?
-            # rails new
-            raise Error, "Application name should be provided in arguments. For details run: rails --help"
-          else
-            # rails new --skip-bundle my_new_application
-            raise Error, "Options should be given after the application name. For details run: rails --help"
-          end
-        end
-
         super
 
+        unless app_path
+          raise Error, "Application name should be provided in arguments. For details run: rails --help"
+        end
+
         if !options[:skip_active_record] && !DATABASES.include?(options[:database])
           raise Error, "Invalid value for --database option. Supported for preconfiguration are: #{DATABASES.join(", ")}."
         end
       end
 
+      public_task :set_default_accessors!
+      public_task :apply_rails_template
       public_task :create_root
 
       def create_root_files
@@ -231,7 +229,14 @@ module Rails
         build(:leftovers)
       end
 
-      public_task :apply_rails_template, :run_bundle
+      def delete_js_folder_skipping_javascript
+        if options[:skip_javascript]
+          remove_dir 'app/assets/javascripts'
+        end
+      end
+
+      public_task :run_bundle
+      public_task :replay_template
 
     protected
 
@@ -245,7 +250,7 @@ module Rails
       end
 
       def app_name
-        @app_name ||= (defined_app_const_base? ? defined_app_name : File.basename(destination_root)).tr(".", "_")
+        @app_name ||= (defined_app_const_base? ? defined_app_name : File.basename(destination_root)).tr('\\', '').tr(". ", "_")
       end
 
       def defined_app_name
@@ -308,58 +313,67 @@ module Rails
     #
     # This class should be called before the AppGenerator is required and started
     # since it configures and mutates ARGV correctly.
-    class AppPreparer # :nodoc
-      attr_reader :argv
-
+    class ARGVScrubber # :nodoc
       def initialize(argv = ARGV)
         @argv = argv
       end
 
       def prepare!
-        handle_version_request!(argv.first)
-        unless handle_invalid_command!(argv.first)
-          argv.shift
-          handle_rails_rc!
+        handle_version_request!(@argv.first)
+        handle_invalid_command!(@argv.first, @argv) do
+          handle_rails_rc!(@argv.drop(1))
         end
       end
 
+      def self.default_rc_file
+        File.expand_path('~/.railsrc')
+      end
+
       private
 
         def handle_version_request!(argument)
-          if ['--version', '-v'].include?(argv.first)
+          if ['--version', '-v'].include?(argument)
             require 'rails/version'
             puts "Rails #{Rails::VERSION::STRING}"
             exit(0)
           end
         end
 
-        def handle_invalid_command!(argument)
-          if argument != "new"
-            argv[0] = "--help"
+        def handle_invalid_command!(argument, argv)
+          if argument == "new"
+            yield
+          else
+            ['--help'] + argv.drop(1)
           end
         end
 
-        def handle_rails_rc!
-          unless argv.delete("--no-rc")
-            insert_railsrc(railsrc)
+        def handle_rails_rc!(argv)
+          if argv.find { |arg| arg == '--no-rc' }
+            argv.reject { |arg| arg == '--no-rc' }
+          else
+            railsrc(argv) { |rc_argv, rc| insert_railsrc_into_argv!(rc_argv, rc) }
           end
         end
 
-        def railsrc
+        def railsrc(argv)
           if (customrc = argv.index{ |x| x.include?("--rc=") })
-            File.expand_path(argv.delete_at(customrc).gsub(/--rc=/, ""))
+            fname = File.expand_path(argv[customrc].gsub(/--rc=/, ""))
+            yield(argv.take(customrc) + argv.drop(customrc + 1), fname)
           else
-            File.join(File.expand_path("~"), '.railsrc')
+            yield argv, self.class.default_rc_file
           end
         end
 
-        def insert_railsrc(railsrc)
-          if File.exist?(railsrc)
-            extra_args_string = File.read(railsrc)
-            extra_args = extra_args_string.split(/\n+/).map {|l| l.split}.flatten
-            puts "Using #{extra_args.join(" ")} from #{railsrc}"
-            argv.insert(1, *extra_args)
-          end
+        def read_rc_file(railsrc)
+          extra_args = File.readlines(railsrc).flat_map(&:split)
+          puts "Using #{extra_args.join(" ")} from #{railsrc}"
+          extra_args
+        end
+
+        def insert_railsrc_into_argv!(argv, railsrc)
+          return argv unless File.exist?(railsrc)
+          extra_args = read_rc_file railsrc
+          argv.take(1) + extra_args + argv.drop(1)
         end
     end
   end
diff --git a/railties/lib/rails/generators/rails/app/templates/Gemfile b/railties/lib/rails/generators/rails/app/templates/Gemfile
index adc83353b4..68bd62d4b1 100644
--- a/railties/lib/rails/generators/rails/app/templates/Gemfile
+++ b/railties/lib/rails/generators/rails/app/templates/Gemfile
@@ -1,30 +1,35 @@
 source 'https://rubygems.org'
 
-<%= rails_gemfile_entry -%>
+<% max_width = gemfile_entries.map { |g| g.name.length }.max -%>
+<% gemfile_entries.each do |gem| -%>
+<% if gem.comment -%>
 
-<%= database_gemfile_entry -%>
-
-<%= assets_gemfile_entry %>
-<%= javascript_gemfile_entry -%>
-
-# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
-gem 'jbuilder', '~> 1.2'
-
-group :doc do
-  # bundle exec rake doc:rails generates the API under doc/api.
-  gem 'sdoc', require: false
-end
+# <%= gem.comment %>
+<% end -%>
+<%= gem.commented_out ? '# ' : '' %>gem '<%= gem.name %>'<% if gem.version -%>
+, '<%= gem.version %>'
+<% elsif gem.options.any? -%>
+,<%= gem.padding(max_width) %><%= gem.options.map { |k,v|
+  "#{k}: #{v.inspect}" }.join(', ') %>
+<% else %>
+<% end -%>
+<% end -%>
 
 # Use ActiveModel has_secure_password
-# gem 'bcrypt-ruby', '~> 3.1.0'
+# gem 'bcrypt-ruby', '~> 3.1.2'
 
 # Use unicorn as the app server
 # gem 'unicorn'
 
 # Use Capistrano for deployment
-# gem 'capistrano', group: :development
+# gem 'capistrano-rails', group: :development
 
 <% unless defined?(JRUBY_VERSION) -%>
 # Use debugger
 # gem 'debugger', group: [:development, :test]
 <% end -%>
+
+<% if RUBY_PLATFORM.match(/bccwin|cygwin|emx|mingw|mswin|wince/) -%>
+# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
+gem 'tzinfo-data', platforms: [:mingw, :mswin]
+<% end -%>
diff --git a/railties/lib/rails/generators/rails/app/templates/app/assets/javascripts/application.js.tt b/railties/lib/rails/generators/rails/app/templates/app/assets/javascripts/application.js.tt
index 8b91313e51..07ea09cdbd 100644
--- a/railties/lib/rails/generators/rails/app/templates/app/assets/javascripts/application.js.tt
+++ b/railties/lib/rails/generators/rails/app/templates/app/assets/javascripts/application.js.tt
@@ -13,6 +13,8 @@
 <% unless options[:skip_javascript] -%>
 //= require <%= options[:javascript] %>
 //= require <%= options[:javascript] %>_ujs
+<% if gemfile_entries.any? { |m| m.name == "turbolinks" } -%>
 //= require turbolinks
 <% end -%>
+<% end -%>
 //= require_tree .
diff --git a/railties/lib/rails/generators/rails/app/templates/app/views/layouts/application.html.erb.tt b/railties/lib/rails/generators/rails/app/templates/app/views/layouts/application.html.erb.tt
index c3d1578818..fe71f7122c 100644
--- a/railties/lib/rails/generators/rails/app/templates/app/views/layouts/application.html.erb.tt
+++ b/railties/lib/rails/generators/rails/app/templates/app/views/layouts/application.html.erb.tt
@@ -4,10 +4,14 @@
   <title><%= camelized %></title>
   <%- if options[:skip_javascript] -%>
   <%%= stylesheet_link_tag    "application", media: "all" %>
-  <%%= javascript_include_tag "application" %>
   <%- else -%>
+    <%- if gemfile_entries.any? { |m| m.name == "turbolinks" } -%>
   <%%= stylesheet_link_tag    "application", media: "all", "data-turbolinks-track" => true %>
   <%%= javascript_include_tag "application", "data-turbolinks-track" => true %>
+    <%- else -%>
+  <%%= stylesheet_link_tag    "application", media: "all" %>
+  <%%= javascript_include_tag "application" %>
+    <%- end -%>
   <%- end -%>
   <%%= csrf_meta_tags %>
 </head>
diff --git a/railties/lib/rails/generators/rails/app/templates/config/boot.rb b/railties/lib/rails/generators/rails/app/templates/config/boot.rb
index 3596736667..5e5f0c1fac 100644
--- a/railties/lib/rails/generators/rails/app/templates/config/boot.rb
+++ b/railties/lib/rails/generators/rails/app/templates/config/boot.rb
@@ -1,4 +1,4 @@
 # Set up gems listed in the Gemfile.
 ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../Gemfile', __FILE__)
 
-require 'bundler/setup' if File.exists?(ENV['BUNDLE_GEMFILE'])
+require 'bundler/setup' if File.exist?(ENV['BUNDLE_GEMFILE'])
diff --git a/railties/lib/rails/generators/rails/app/templates/config/databases/frontbase.yml b/railties/lib/rails/generators/rails/app/templates/config/databases/frontbase.yml
index 4807986333..c6dfd50d40 100644
--- a/railties/lib/rails/generators/rails/app/templates/config/databases/frontbase.yml
+++ b/railties/lib/rails/generators/rails/app/templates/config/databases/frontbase.yml
@@ -6,26 +6,23 @@
 # Configure Using Gemfile
 # gem 'ruby-frontbase'
 #
-development:
+default: &default
   adapter: frontbase
   host: localhost
-  database: <%= app_name %>_development
   username: <%= app_name %>
   password: ''
 
+development:
+  <<: *default
+  database: <%= app_name %>_development
+
 # 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:
-  adapter: frontbase
-  host: localhost
+  <<: *default
   database: <%= app_name %>_test
-  username: <%= app_name %>
-  password: ''
 
 production:
-  adapter: frontbase
-  host: localhost
+  <<: *default
   database: <%= app_name %>_production
-  username: <%= app_name %>
-  password: ''
diff --git a/railties/lib/rails/generators/rails/app/templates/config/databases/ibm_db.yml b/railties/lib/rails/generators/rails/app/templates/config/databases/ibm_db.yml
index 3d689a110a..fe53cd0ea2 100644
--- a/railties/lib/rails/generators/rails/app/templates/config/databases/ibm_db.yml
+++ b/railties/lib/rails/generators/rails/app/templates/config/databases/ibm_db.yml
@@ -33,12 +33,11 @@
 #
 # For more details on the installation and the connection parameters below,
 # please refer to the latest documents at http://rubyforge.org/docman/?group_id=2361
-
-development:
+#
+default: &default
   adapter: ibm_db
   username: db2inst1
   password:
-  database: <%= app_name[0,4] %>_dev
   #schema: db2inst1
   #host: localhost
   #port: 50000
@@ -51,36 +50,17 @@ development:
   #authentication: SERVER
   #parameterized: false
 
+development:
+  <<: *default
+  database: <%= app_name[0,4] %>_dev
+
+# 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:
-  adapter: ibm_db
-  username: db2inst1
-  password:
+  <<: *default
   database: <%= app_name[0,4] %>_tst
-  #schema: db2inst1
-  #host: localhost
-  #port: 50000
-  #account: my_account
-  #app_user: my_app_user
-  #application: my_application
-  #workstation: my_workstation
-  #security: SSL
-  #timeout: 10
-  #authentication: SERVER
-  #parameterized: false
 
 production:
-  adapter: ibm_db
-  username: db2inst1
-  password:
+  <<: *default
   database: <%= app_name[0,8] %>
-  #schema: db2inst1
-  #host: localhost
-  #port: 50000
-  #account: my_account
-  #app_user: my_app_user
-  #application: my_application
-  #workstation: my_workstation
-  #security: SSL
-  #timeout: 10
-  #authentication: SERVER
-  #parameterized: false
\ No newline at end of file
diff --git a/railties/lib/rails/generators/rails/app/templates/config/databases/jdbc.yml b/railties/lib/rails/generators/rails/app/templates/config/databases/jdbc.yml
index 1d2bf08b91..be1dae332f 100644
--- a/railties/lib/rails/generators/rails/app/templates/config/databases/jdbc.yml
+++ b/railties/lib/rails/generators/rails/app/templates/config/databases/jdbc.yml
@@ -5,58 +5,54 @@
 # Configure using Gemfile:
 #   gem 'activerecord-jdbcmssql-adapter'
 #
-#development:
-#  adapter: mssql
-#  username: <%= app_name %>
-#  password:
-#  host: localhost
-#  database: <%= app_name %>_development
+# development:
+#   adapter: mssql
+#   username: <%= app_name %>
+#   password:
+#   host: localhost
+#   database: <%= app_name %>_development
 #
 # 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:
-#  adapter: mssql
-#  username: <%= app_name %>
-#  password:
-#  host: localhost
-#  database: <%= app_name %>_test
+# test:
+#   adapter: mssql
+#   username: <%= app_name %>
+#   password:
+#   host: localhost
+#   database: <%= app_name %>_test
 #
-#production:
-#  adapter: mssql
-#  username: <%= app_name %>
-#  password:
-#  host: localhost
-#  database: <%= app_name %>_production
+# production:
+#   adapter: mssql
+#   username: <%= app_name %>
+#   password:
+#   host: localhost
+#   database: <%= app_name %>_production
 
 # If you are using oracle, db2, sybase, informix or prefer to use the plain
 # JDBC adapter, configure your database setting as the example below (requires
 # you to download and manually install the database vendor's JDBC driver .jar
-# file). See your driver documentation for the apropriate driver class and
+# file). See your driver documentation for the appropriate driver class and
 # connection string:
 
-development:
+default: &default
   adapter: jdbc
   username: <%= app_name %>
   password:
   driver:
+
+development:
+  <<: *default
   url: jdbc:db://localhost/<%= app_name %>_development
 
 # 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:
-  adapter: jdbc
-  username: <%= app_name %>
-  password:
-  driver:
+  <<: *default
   url: jdbc:db://localhost/<%= app_name %>_test
 
 production:
-  adapter: jdbc
-  username: <%= app_name %>
-  password:
-  driver:
+  <<: *default
   url: jdbc:db://localhost/<%= app_name %>_production
diff --git a/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcmysql.yml b/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcmysql.yml
index 5a594ac1f3..26e2a5976c 100644
--- a/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcmysql.yml
+++ b/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcmysql.yml
@@ -8,26 +8,24 @@
 #
 # And be sure to use new-style password hashing:
 #   http://dev.mysql.com/doc/refman/5.0/en/old-client.html
-development:
+#
+default: &default
   adapter: mysql
-  database: <%= app_name %>_development
   username: root
   password:
   host: localhost
 
+development:
+  <<: *default
+  database: <%= app_name %>_development
+
 # 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:
-  adapter: mysql
+  <<: *default
   database: <%= app_name %>_test
-  username: root
-  password:
-  host: localhost
 
 production:
-  adapter: mysql
+  <<: *default
   database: <%= app_name %>_production
-  username: root
-  password:
-  host: localhost
diff --git a/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcpostgresql.yml b/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcpostgresql.yml
index e1a00d076f..ccd44cf54b 100644
--- a/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcpostgresql.yml
+++ b/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcpostgresql.yml
@@ -2,14 +2,17 @@
 #
 # Configure Using Gemfile
 # gem 'activerecord-jdbcpostgresql-adapter'
-
-development:
+#
+default: &default
   adapter: postgresql
   encoding: unicode
-  database: <%= app_name %>_development
   username: <%= app_name %>
   password:
 
+development:
+  <<: *default
+  database: <%= app_name %>_development
+
   # Connect on a TCP socket. Omitted by default since the client uses a
   # domain socket that doesn't need configuration. Windows does not have
   # domain sockets, so uncomment these lines.
@@ -29,15 +32,9 @@ development:
 # re-generated from your development database when you run "rake".
 # Do not set this db to the same as development or production.
 test:
-  adapter: postgresql
-  encoding: unicode
+  <<: *default
   database: <%= app_name %>_test
-  username: <%= app_name %>
-  password:
 
 production:
-  adapter: postgresql
-  encoding: unicode
+  <<: *default
   database: <%= app_name %>_production
-  username: <%= app_name %>
-  password:
diff --git a/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcsqlite3.yml b/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcsqlite3.yml
index 175f3eb3db..28c36eb82f 100644
--- a/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcsqlite3.yml
+++ b/railties/lib/rails/generators/rails/app/templates/config/databases/jdbcsqlite3.yml
@@ -4,17 +4,20 @@
 # Configure Using Gemfile
 # gem 'activerecord-jdbcsqlite3-adapter'
 #
-development:
+default: &default
   adapter: sqlite3
+
+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:
-  adapter: sqlite3
+  <<: *default
   database: db/test.sqlite3
 
 production:
-  adapter: sqlite3
+  <<: *default
   database: db/production.sqlite3
diff --git a/railties/lib/rails/generators/rails/app/templates/config/databases/mysql.yml b/railties/lib/rails/generators/rails/app/templates/config/databases/mysql.yml
index c3349912aa..3fc7ce28a1 100644
--- a/railties/lib/rails/generators/rails/app/templates/config/databases/mysql.yml
+++ b/railties/lib/rails/generators/rails/app/templates/config/databases/mysql.yml
@@ -8,10 +8,10 @@
 #
 # And be sure to use new-style password hashing:
 #   http://dev.mysql.com/doc/refman/5.0/en/old-client.html
-development:
+#
+default: &default
   adapter: mysql2
   encoding: utf8
-  database: <%= app_name %>_development
   pool: 5
   username: root
   password:
@@ -21,31 +21,17 @@ development:
   host: localhost
 <% end -%>
 
+development:
+  <<: *default
+  database: <%= app_name %>_development
+
 # 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:
-  adapter: mysql2
-  encoding: utf8
+  <<: *default
   database: <%= app_name %>_test
-  pool: 5
-  username: root
-  password:
-<% if mysql_socket -%>
-  socket: <%= mysql_socket %>
-<% else -%>
-  host: localhost
-<% end -%>
 
 production:
-  adapter: mysql2
-  encoding: utf8
+  <<: *default
   database: <%= app_name %>_production
-  pool: 5
-  username: root
-  password:
-<% if mysql_socket -%>
-  socket: <%= mysql_socket %>
-<% else -%>
-  host: localhost
-<% end -%>
diff --git a/railties/lib/rails/generators/rails/app/templates/config/databases/oracle.yml b/railties/lib/rails/generators/rails/app/templates/config/databases/oracle.yml
index b661a60389..d5b52c969b 100644
--- a/railties/lib/rails/generators/rails/app/templates/config/databases/oracle.yml
+++ b/railties/lib/rails/generators/rails/app/templates/config/databases/oracle.yml
@@ -16,24 +16,22 @@
 #  prefetch_rows: 100
 #  cursor_sharing: similar
 #
-
-development:
+default: &default
   adapter: oracle
-  database: <%= app_name %>_development
   username: <%= app_name %>
   password:
 
+development:
+  <<: *default
+  database: <%= app_name %>_development
+
 # 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:
-  adapter: oracle
+  <<: *default
   database: <%= app_name %>_test
-  username: <%= app_name %>
-  password:
 
 production:
-  adapter: oracle
+  <<: *default
   database: <%= app_name %>_production
-  username: <%= app_name %>
-  password:
diff --git a/railties/lib/rails/generators/rails/app/templates/config/databases/postgresql.yml b/railties/lib/rails/generators/rails/app/templates/config/databases/postgresql.yml
index eb569b7dab..eaeb82bddd 100644
--- a/railties/lib/rails/generators/rails/app/templates/config/databases/postgresql.yml
+++ b/railties/lib/rails/generators/rails/app/templates/config/databases/postgresql.yml
@@ -14,14 +14,19 @@
 # Configure Using Gemfile
 # gem 'pg'
 #
-development:
+default: &default
   adapter: postgresql
   encoding: unicode
-  database: <%= app_name %>_development
+  # For details on connection pooling, see rails configration guide
+  # http://guides.rubyonrails.org/configuring.html#database-pooling
   pool: 5
   username: <%= app_name %>
   password:
 
+development:
+  <<: *default
+  database: <%= app_name %>_development
+
   # Connect on a TCP socket. Omitted by default since the client uses a
   # domain socket that doesn't need configuration. Windows does not have
   # domain sockets, so uncomment these lines.
@@ -44,17 +49,9 @@ development:
 # re-generated from your development database when you run "rake".
 # Do not set this db to the same as development or production.
 test:
-  adapter: postgresql
-  encoding: unicode
+  <<: *default
   database: <%= app_name %>_test
-  pool: 5
-  username: <%= app_name %>
-  password:
 
 production:
-  adapter: postgresql
-  encoding: unicode
+  <<: *default
   database: <%= app_name %>_production
-  pool: 5
-  username: <%= app_name %>
-  password:
diff --git a/railties/lib/rails/generators/rails/app/templates/config/databases/sqlite3.yml b/railties/lib/rails/generators/rails/app/templates/config/databases/sqlite3.yml
index 51a4dd459d..1c1a37ca8d 100644
--- a/railties/lib/rails/generators/rails/app/templates/config/databases/sqlite3.yml
+++ b/railties/lib/rails/generators/rails/app/templates/config/databases/sqlite3.yml
@@ -3,23 +3,23 @@
 #
 #   Ensure the SQLite 3 gem is defined in your Gemfile
 #   gem 'sqlite3'
-development:
+#
+default: &default
   adapter: sqlite3
-  database: db/development.sqlite3
   pool: 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:
-  adapter: sqlite3
+  <<: *default
   database: db/test.sqlite3
-  pool: 5
-  timeout: 5000
 
 production:
-  adapter: sqlite3
+  <<: *default
   database: db/production.sqlite3
-  pool: 5
-  timeout: 5000
diff --git a/railties/lib/rails/generators/rails/app/templates/config/databases/sqlserver.yml b/railties/lib/rails/generators/rails/app/templates/config/databases/sqlserver.yml
index 7ef89d6608..4855f66c0d 100644
--- a/railties/lib/rails/generators/rails/app/templates/config/databases/sqlserver.yml
+++ b/railties/lib/rails/generators/rails/app/templates/config/databases/sqlserver.yml
@@ -21,37 +21,27 @@
 # If you can connect with "tsql -S servername", your basic FreeTDS installation is working.
 # 'man tsql' for more info
 # Set timeout to a larger number if valid queries against a live db fail
-
-development:
+#
+default: &default
   adapter: sqlserver
   encoding: utf8
   reconnect: false
-  database: <%= app_name %>_development
   username: <%= app_name %>
   password:
   timeout: 25
   dataserver: from_freetds.conf
 
+development:
+  <<: *default
+  database: <%= app_name %>_development
 
 # 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:
-  adapter: sqlserver
-  encoding: utf8
-  reconnect: false
+  <<: *default
   database: <%= app_name %>_test
-  username: <%= app_name %>
-  password:
-  timeout: 25
-  dataserver: from_freetds.conf
 
 production:
-  adapter: sqlserver
-  encoding: utf8
-  reconnect: false
+  <<: *default
   database: <%= app_name %>_production
-  username: <%= app_name %>
-  password:
-  timeout: 25
-  dataserver: from_freetds.conf
diff --git a/railties/lib/rails/generators/rails/app/templates/config/environments/development.rb.tt b/railties/lib/rails/generators/rails/app/templates/config/environments/development.rb.tt
index cff570a631..b724d468a2 100644
--- a/railties/lib/rails/generators/rails/app/templates/config/environments/development.rb.tt
+++ b/railties/lib/rails/generators/rails/app/templates/config/environments/development.rb.tt
@@ -22,8 +22,8 @@ Rails.application.configure do
   <%- unless options.skip_active_record? -%>
   # Raise an error on page load if there are pending migrations.
   config.active_record.migration_error = :page_load
-  <%- end -%>
 
+  <%- end -%>
   <%- unless options.skip_sprockets? -%>
   # Debug mode disables concatenation and preprocessing of assets.
   # This option may cause significant delays in view rendering with a large
diff --git a/railties/lib/rails/generators/rails/app/templates/public/404.html b/railties/lib/rails/generators/rails/app/templates/public/404.html
index a0daa0c156..b612547fc2 100644
--- a/railties/lib/rails/generators/rails/app/templates/public/404.html
+++ b/railties/lib/rails/generators/rails/app/templates/public/404.html
@@ -2,17 +2,23 @@
 <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>
   body {
     background-color: #EFEFEF;
     color: #2E2F30;
     text-align: center;
     font-family: arial, sans-serif;
+    margin: 0;
   }
 
   div.dialog {
-    width: 25em;
-    margin: 4em auto 0 auto;
+    width: 95%;
+    max-width: 33em;
+    margin: 4em auto 0;
+  }
+
+  div.dialog > div {
     border: 1px solid #CCC;
     border-right-color: #999;
     border-left-color: #999;
@@ -21,7 +27,8 @@
     border-top-left-radius: 9px;
     border-top-right-radius: 9px;
     background-color: white;
-    padding: 7px 4em 0 4em;
+    padding: 7px 12% 0;
+    box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
   }
 
   h1 {
@@ -30,19 +37,19 @@
     line-height: 1.5em;
   }
 
-  body > p {
-    width: 33em;
-    margin: 0 auto 1em;
-    padding: 1em 0;
+  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);
+    box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
   }
   </style>
 </head>
@@ -50,9 +57,11 @@
 <body>
   <!-- This file lives in public/404.html -->
   <div class="dialog">
-    <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>
+      <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>
-  <p>If you are the application owner check the logs for more information.</p>
 </body>
 </html>
diff --git a/railties/lib/rails/generators/rails/app/templates/public/422.html b/railties/lib/rails/generators/rails/app/templates/public/422.html
index fbb4b84d72..a21f82b3bd 100644
--- a/railties/lib/rails/generators/rails/app/templates/public/422.html
+++ b/railties/lib/rails/generators/rails/app/templates/public/422.html
@@ -2,17 +2,23 @@
 <html>
 <head>
   <title>The change you wanted was rejected (422)</title>
+  <meta name="viewport" content="width=device-width,initial-scale=1">
   <style>
   body {
     background-color: #EFEFEF;
     color: #2E2F30;
     text-align: center;
     font-family: arial, sans-serif;
+    margin: 0;
   }
 
   div.dialog {
-    width: 25em;
-    margin: 4em auto 0 auto;
+    width: 95%;
+    max-width: 33em;
+    margin: 4em auto 0;
+  }
+
+  div.dialog > div {
     border: 1px solid #CCC;
     border-right-color: #999;
     border-left-color: #999;
@@ -21,7 +27,8 @@
     border-top-left-radius: 9px;
     border-top-right-radius: 9px;
     background-color: white;
-    padding: 7px 4em 0 4em;
+    padding: 7px 12% 0;
+    box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
   }
 
   h1 {
@@ -30,19 +37,19 @@
     line-height: 1.5em;
   }
 
-  body > p {
-    width: 33em;
-    margin: 0 auto 1em;
-    padding: 1em 0;
+  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);
+    box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
   }
   </style>
 </head>
@@ -50,9 +57,11 @@
 <body>
   <!-- This file lives in public/422.html -->
   <div class="dialog">
-    <h1>The change you wanted was rejected.</h1>
-    <p>Maybe you tried to change something you didn't have access to.</p>
+    <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>
-  <p>If you are the application owner check the logs for more information.</p>
 </body>
 </html>
diff --git a/railties/lib/rails/generators/rails/app/templates/public/500.html b/railties/lib/rails/generators/rails/app/templates/public/500.html
index e9052d35bf..061abc587d 100644
--- a/railties/lib/rails/generators/rails/app/templates/public/500.html
+++ b/railties/lib/rails/generators/rails/app/templates/public/500.html
@@ -2,17 +2,23 @@
 <html>
 <head>
   <title>We're sorry, but something went wrong (500)</title>
+  <meta name="viewport" content="width=device-width,initial-scale=1">
   <style>
   body {
     background-color: #EFEFEF;
     color: #2E2F30;
     text-align: center;
     font-family: arial, sans-serif;
+    margin: 0;
   }
 
   div.dialog {
-    width: 25em;
-    margin: 4em auto 0 auto;
+    width: 95%;
+    max-width: 33em;
+    margin: 4em auto 0;
+  }
+
+  div.dialog > div {
     border: 1px solid #CCC;
     border-right-color: #999;
     border-left-color: #999;
@@ -21,7 +27,8 @@
     border-top-left-radius: 9px;
     border-top-right-radius: 9px;
     background-color: white;
-    padding: 7px 4em 0 4em;
+    padding: 7px 12% 0;
+    box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
   }
 
   h1 {
@@ -30,19 +37,19 @@
     line-height: 1.5em;
   }
 
-  body > p {
-    width: 33em;
-    margin: 0 auto 1em;
-    padding: 1em 0;
+  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);
+    box-shadow: 0 3px 8px rgba(50, 50, 50, 0.17);
   }
   </style>
 </head>
@@ -50,8 +57,10 @@
 <body>
   <!-- This file lives in public/500.html -->
   <div class="dialog">
-    <h1>We're sorry, but something went wrong.</h1>
+    <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>
-  <p>If you are the application owner check the logs for more information.</p>
 </body>
 </html>
diff --git a/railties/lib/rails/generators/rails/controller/controller_generator.rb b/railties/lib/rails/generators/rails/controller/controller_generator.rb
index 822f35fb42..ef84447df9 100644
--- a/railties/lib/rails/generators/rails/controller/controller_generator.rb
+++ b/railties/lib/rails/generators/rails/controller/controller_generator.rb
@@ -32,18 +32,18 @@ module Rails
           # namespace :foo do
           #   namespace :bar do
           namespace_ladder = class_path.each_with_index.map do |ns, i|
-            %{#{" " * i * 2}namespace :#{ns} do\n  }
+            indent("namespace :#{ns} do\n", i * 2)
           end.join
 
           # Create route
           #     get "baz/index"
-          route = %{#{" " * depth * 2}get "#{file_name}/#{action}"\n}
+          route = indent(%{get "#{file_name}/#{action}"\n}, depth * 2)
 
           # Create `end` ladder
           #   end
           # end
           end_ladder = (1..depth).reverse_each.map do |i|
-            "#{" " * i * 2}end\n"
+            indent("end\n", i * 2)
           end.join
 
           # Combine the 3 parts to generate complete route entry
diff --git a/railties/lib/rails/generators/rails/model/USAGE b/railties/lib/rails/generators/rails/model/USAGE
index 145d9ee6e0..833b7beb7f 100644
--- a/railties/lib/rails/generators/rails/model/USAGE
+++ b/railties/lib/rails/generators/rails/model/USAGE
@@ -60,7 +60,7 @@ Available field types:
     For decimal, two integers separated by a comma in curly braces will be used
     for precision and scale:
 
-        `rails generate model product price:decimal{10,2}`
+        `rails generate model product 'price:decimal{10,2}'`
 
     You can add a `:uniq` or `:index` suffix for unique or standard indexes
     respectively:
diff --git a/railties/lib/rails/generators/rails/plugin/plugin_generator.rb b/railties/lib/rails/generators/rails/plugin/plugin_generator.rb
index 13f5472ede..dbe1e37d8e 100644
--- a/railties/lib/rails/generators/rails/plugin/plugin_generator.rb
+++ b/railties/lib/rails/generators/rails/plugin/plugin_generator.rb
@@ -176,12 +176,16 @@ task default: :test
                                                  "skip adding entry to Gemfile"
 
       def initialize(*args)
-        raise Error, "Options should be given after the plugin name. For details run: rails plugin new --help" if args[0].blank?
-
         @dummy_path = nil
         super
+
+        unless plugin_path
+          raise Error, "Plugin name should be provided in arguments. For details run: rails plugin new --help"
+        end
       end
 
+      public_task :set_default_accessors!
+      public_task :apply_rails_template
       public_task :create_root
 
       def create_root_files
@@ -238,7 +242,6 @@ task default: :test
         build(:leftovers)
       end
 
-      public_task :apply_rails_template, :run_bundle
 
       def name
         @name ||= begin
@@ -252,6 +255,9 @@ task default: :test
         end
       end
 
+      public_task :run_bundle
+      public_task :replay_template
+
     protected
 
       def app_templates_dir
@@ -317,7 +323,7 @@ task default: :test
         @application_definition ||= begin
 
           dummy_application_path = File.expand_path("#{dummy_path}/config/application.rb", destination_root)
-          unless options[:pretend] || !File.exists?(dummy_application_path)
+          unless options[:pretend] || !File.exist?(dummy_application_path)
             contents = File.read(dummy_application_path)
             contents[(contents.index(/module ([\w]+)\n(.*)class Application/m))..-1]
           end
diff --git a/railties/lib/rails/generators/rails/plugin/templates/Gemfile b/railties/lib/rails/generators/rails/plugin/templates/Gemfile
index 3f2b78f2fd..d576784415 100644
--- a/railties/lib/rails/generators/rails/plugin/templates/Gemfile
+++ b/railties/lib/rails/generators/rails/plugin/templates/Gemfile
@@ -23,7 +23,20 @@ end
 <% if options.dev? || options.edge? -%>
 # Your gem is dependent on dev or edge Rails. Once you can lock this
 # dependency down to a specific version, move it to your gemspec.
-<%= rails_gemfile_entry -%>
+<% max_width = gemfile_entries.map { |g| g.name.length }.max -%>
+<% gemfile_entries.each do |gem| -%>
+<% if gem.comment -%>
+
+# <%= gem.comment %>
+<% end -%>
+<%= gem.commented_out ? '# ' : '' %>gem '<%= gem.name %>'<% if gem.version -%>
+, '<%= gem.version %>'
+<% elsif gem.options.any? -%>
+,<%= gem.padding(max_width) %><%= gem.options.map { |k,v|
+  "#{k}: #{v.inspect}" }.join(', ') %>
+<% else %>
+<% end -%>
+<% end -%>
 
 <% end -%>
 # To use debugger
diff --git a/railties/lib/rails/generators/rails/plugin/templates/rails/boot.rb b/railties/lib/rails/generators/rails/plugin/templates/rails/boot.rb
index ef360470a3..6266cfc509 100644
--- a/railties/lib/rails/generators/rails/plugin/templates/rails/boot.rb
+++ b/railties/lib/rails/generators/rails/plugin/templates/rails/boot.rb
@@ -1,5 +1,5 @@
 # Set up gems listed in the Gemfile.
 ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../../../Gemfile', __FILE__)
 
-require 'bundler/setup' if File.exists?(ENV['BUNDLE_GEMFILE'])
+require 'bundler/setup' if File.exist?(ENV['BUNDLE_GEMFILE'])
 $LOAD_PATH.unshift File.expand_path('../../../../lib', __FILE__)
diff --git a/railties/lib/rails/generators/rails/scaffold_controller/scaffold_controller_generator.rb b/railties/lib/rails/generators/rails/scaffold_controller/scaffold_controller_generator.rb
index 4f36b612ae..6bf0a33a5f 100644
--- a/railties/lib/rails/generators/rails/scaffold_controller/scaffold_controller_generator.rb
+++ b/railties/lib/rails/generators/rails/scaffold_controller/scaffold_controller_generator.rb
@@ -13,7 +13,7 @@ module Rails
       argument :attributes, type: :array, default: [], banner: "field:type field:type"
 
       def create_controller_files
-        template "controller.rb", File.join('app/controllers', class_path, "#{controller_file_name}_controller.rb")
+        template "controller.rb", File.join('app/controllers', controller_class_path, "#{controller_file_name}_controller.rb")
       end
 
       hook_for :template_engine, :test_framework, as: :scaffold
diff --git a/railties/lib/rails/generators/resource_helpers.rb b/railties/lib/rails/generators/resource_helpers.rb
index 7fd5c00768..a01eb57651 100644
--- a/railties/lib/rails/generators/resource_helpers.rb
+++ b/railties/lib/rails/generators/resource_helpers.rb
@@ -9,11 +9,19 @@ module Rails
 
       def self.included(base) #:nodoc:
         base.class_option :force_plural, type: :boolean, desc: "Forces the use of a plural ModelName"
+        base.class_option :model_name, type: :string, desc: "ModelName to be used"
       end
 
       # Set controller variables on initialization.
       def initialize(*args) #:nodoc:
         super
+        if options[:model_name]
+          controller_name = name
+          self.name = options[:model_name]
+          assign_names!(self.name)
+        else
+          controller_name = name
+        end
 
         if name == name.pluralize && name.singularize != name.pluralize && !options[:force_plural]
           unless ResourceHelpers.skip_warn
@@ -24,19 +32,26 @@ module Rails
           assign_names!(name)
         end
 
-        @controller_name = name.pluralize
+        assign_controller_names!(controller_name.pluralize)
       end
 
       protected
 
-        attr_reader :controller_name
+        attr_reader :controller_name, :controller_file_name
 
         def controller_class_path
-          class_path
+          if options[:model_name]
+            @controller_class_path
+          else
+            class_path
+          end
         end
 
-        def controller_file_name
-          @controller_file_name ||= file_name.pluralize
+        def assign_controller_names!(name)
+          @controller_name = name
+          @controller_class_path = name.include?('/') ? name.split('/') : name.split('::')
+          @controller_class_path.map! { |m| m.underscore }
+          @controller_file_name = @controller_class_path.pop
         end
 
         def controller_file_path
diff --git a/railties/lib/rails/generators/testing/assertions.rb b/railties/lib/rails/generators/testing/assertions.rb
index 6267b2f2ee..2e877f8762 100644
--- a/railties/lib/rails/generators/testing/assertions.rb
+++ b/railties/lib/rails/generators/testing/assertions.rb
@@ -21,8 +21,8 @@ module Rails
         #     end
         #   end
         def assert_file(relative, *contents)
-          absolute = File.expand_path(relative, destination_root)
-          assert File.exists?(absolute), "Expected file #{relative.inspect} to exist, but does not"
+          absolute = File.expand_path(relative, destination_root).shellescape
+          assert File.exist?(absolute), "Expected file #{relative.inspect} to exist, but does not"
 
           read = File.read(absolute) if block_given? || !contents.empty?
           yield read if block_given?
@@ -44,7 +44,7 @@ module Rails
         #   assert_no_file "config/random.rb"
         def assert_no_file(relative)
           absolute = File.expand_path(relative, destination_root)
-          assert !File.exists?(absolute), "Expected file #{relative.inspect} to not exist, but does"
+          assert !File.exist?(absolute), "Expected file #{relative.inspect} to not exist, but does"
         end
         alias :assert_no_directory :assert_no_file
 
diff --git a/railties/lib/rails/info_controller.rb b/railties/lib/rails/info_controller.rb
index fa5668a5b5..85ea11b4e7 100644
--- a/railties/lib/rails/info_controller.rb
+++ b/railties/lib/rails/info_controller.rb
@@ -13,10 +13,12 @@ class Rails::InfoController < ActionController::Base # :nodoc:
 
   def properties
     @info = Rails::Info.to_html
+    @page_title = 'Properties'
   end
 
   def routes
     @routes_inspector = ActionDispatch::Routing::RoutesInspector.new(_routes.routes)
+    @page_title = 'Routes'
   end
 
   protected
diff --git a/railties/lib/rails/paths.rb b/railties/lib/rails/paths.rb
index de6795eda2..f512aefb23 100644
--- a/railties/lib/rails/paths.rb
+++ b/railties/lib/rails/paths.rb
@@ -81,34 +81,28 @@ module Rails
       end
 
       def autoload_once
-        filter_by(:autoload_once?)
+        filter_by { |p| p.autoload_once? }
       end
 
       def eager_load
-        filter_by(:eager_load?)
+        filter_by { |p| p.eager_load? }
       end
 
       def autoload_paths
-        filter_by(:autoload?)
+        filter_by { |p| p.autoload? }
       end
 
       def load_paths
-        filter_by(:load_path?)
+        filter_by { |p| p.load_path? }
       end
 
-    protected
+    private
 
-      def filter_by(constraint)
-        all = []
-        all_paths.each do |path|
-          if path.send(constraint)
-            paths  = path.existent
-            paths -= path.children.map { |p| p.send(constraint) ? [] : p.existent }.flatten
-            all.concat(paths)
-          end
-        end
-        all.uniq!
-        all
+      def filter_by(&block)
+        all_paths.find_all(&block).flat_map { |path|
+          paths = path.existent
+          paths - path.children.map { |p| yield(p) ? [] : p.existent }.flatten
+        }.uniq
       end
     end
 
@@ -130,8 +124,9 @@ module Rails
       end
 
       def children
-        keys = @root.keys.select { |k| k.include?(@current) }
-        keys.delete(@current)
+        keys = @root.keys.find_all { |k|
+          k.start_with?(@current) && k != @current
+        }
         @root.values_at(*keys.sort)
       end
 
@@ -203,7 +198,7 @@ module Rails
 
       # Returns all expanded paths but only if they exist in the filesystem.
       def existent
-        expanded.select { |f| File.exists?(f) }
+        expanded.select { |f| File.exist?(f) }
       end
 
       def existent_directories
diff --git a/railties/lib/rails/rack/log_tailer.rb b/railties/lib/rails/rack/log_tailer.rb
index 18f22e8089..50d0eb96fc 100644
--- a/railties/lib/rails/rack/log_tailer.rb
+++ b/railties/lib/rails/rack/log_tailer.rb
@@ -7,7 +7,7 @@ module Rails
         path = Pathname.new(log || "#{::File.expand_path(Rails.root)}/log/#{Rails.env}.log").cleanpath
 
         @cursor = @file = nil
-        if ::File.exists?(path)
+        if ::File.exist?(path)
           @cursor = ::File.size(path)
           @file = ::File.open(path, 'r')
         end
diff --git a/railties/lib/rails/rack/logger.rb b/railties/lib/rails/rack/logger.rb
index ef4cdcb080..3b35798679 100644
--- a/railties/lib/rails/rack/logger.rb
+++ b/railties/lib/rails/rack/logger.rb
@@ -11,7 +11,6 @@ module Rails
       def initialize(app, taggers = nil)
         @app          = app
         @taggers      = taggers || []
-        @instrumenter = ActiveSupport::Notifications.instrumenter
       end
 
       def call(env)
@@ -33,7 +32,8 @@ module Rails
           logger.debug ''
         end
 
-        @instrumenter.start 'request.action_dispatch', request: request
+        instrumenter = ActiveSupport::Notifications.instrumenter
+        instrumenter.start 'request.action_dispatch', request: request
         logger.info started_request_message(request)
         resp = @app.call(env)
         resp[2] = ::Rack::BodyProxy.new(resp[2]) { finish(request) }
@@ -70,7 +70,8 @@ module Rails
       private
 
       def finish(request)
-        @instrumenter.finish 'request.action_dispatch', request: request
+        instrumenter = ActiveSupport::Notifications.instrumenter
+        instrumenter.finish 'request.action_dispatch', request: request
       end
 
       def development?
diff --git a/railties/lib/rails/railtie/configuration.rb b/railties/lib/rails/railtie/configuration.rb
index 0cbbf04da2..eb3b2d8ef4 100644
--- a/railties/lib/rails/railtie/configuration.rb
+++ b/railties/lib/rails/railtie/configuration.rb
@@ -80,7 +80,7 @@ module Rails
         to_prepare_blocks << blk if blk
       end
 
-      def respond_to?(name)
+      def respond_to?(name, include_private = false)
         super || @@options.key?(name.to_sym)
       end
 
diff --git a/railties/lib/rails/source_annotation_extractor.rb b/railties/lib/rails/source_annotation_extractor.rb
index b806b922b7..3cf6a005ea 100644
--- a/railties/lib/rails/source_annotation_extractor.rb
+++ b/railties/lib/rails/source_annotation_extractor.rb
@@ -67,7 +67,7 @@ class SourceAnnotationExtractor
   # Returns a hash that maps filenames under +dir+ (recursively) to arrays
   # with their annotations. Only files with annotations are included. Files
   # with extension +.builder+, +.rb+, +.erb+, +.haml+, +.slim+, +.css+,
-  # +.scss+, +.js+, +.coffee+, and +.rake+
+  # +.scss+, +.js+, +.coffee+, +.rake+, +.sass+ and +.less+
   # are taken into account.
   def find_in(dir)
     results = {}
diff --git a/railties/lib/rails/tasks/framework.rake b/railties/lib/rails/tasks/framework.rake
index bd4e7c33e0..e669315934 100644
--- a/railties/lib/rails/tasks/framework.rake
+++ b/railties/lib/rails/tasks/framework.rake
@@ -46,7 +46,7 @@ namespace :rails do
         require 'rails/generators/rails/app/app_generator'
         gen = Rails::Generators::AppGenerator.new ["rails"], { with_dispatchers: true },
                                                              destination_root: Rails.root
-        File.exists?(Rails.root.join("config", "application.rb")) ?
+        File.exist?(Rails.root.join("config", "application.rb")) ?
           gen.send(:app_const) : gen.send(:valid_const?)
         gen
       end
diff --git a/railties/lib/rails/tasks/log.rake b/railties/lib/rails/tasks/log.rake
index 6c3f02eb0c..877f175ef3 100644
--- a/railties/lib/rails/tasks/log.rake
+++ b/railties/lib/rails/tasks/log.rake
@@ -10,7 +10,7 @@ namespace :log do
     if ENV['LOGS']
       ENV['LOGS'].split(',')
                   .map    { |file| "log/#{file.strip}.log" }
-                  .select { |file| File.exists?(file) }
+                  .select { |file| File.exist?(file) }
     else
       FileList["log/*.log"]
     end
diff --git a/railties/lib/rails/templates/layouts/application.html.erb b/railties/lib/rails/templates/layouts/application.html.erb
index 7352d48e7b..50a4755e45 100644
--- a/railties/lib/rails/templates/layouts/application.html.erb
+++ b/railties/lib/rails/templates/layouts/application.html.erb
@@ -2,7 +2,7 @@
 <html lang="en">
 <head>
   <meta charset="utf-8" />
-  <title>Routes</title>
+  <title><%= @page_title %></title>
   <style>
     body { background-color: #fff; color: #333; }
 
diff --git a/railties/lib/rails/test_help.rb b/railties/lib/rails/test_help.rb
index 46f7466551..be801befc2 100644
--- a/railties/lib/rails/test_help.rb
+++ b/railties/lib/rails/test_help.rb
@@ -10,7 +10,9 @@ require 'rails/generators/test_case'
 
 # Config Rails backtrace in tests.
 require 'rails/backtrace_cleaner'
-MiniTest.backtrace_filter = Rails.backtrace_cleaner
+if ENV["BACKTRACE"].nil?
+  MiniTest.backtrace_filter = Rails.backtrace_cleaner
+end
 
 if defined?(ActiveRecord::Base)
   class ActiveSupport::TestCase
diff --git a/railties/lib/rails/test_unit/testing.rake b/railties/lib/rails/test_unit/testing.rake
index 547846c833..38107e77b2 100644
--- a/railties/lib/rails/test_unit/testing.rake
+++ b/railties/lib/rails/test_unit/testing.rake
@@ -4,7 +4,7 @@ require 'rails/test_unit/sub_test_task'
 
 task default: :test
 
-desc 'Runs test:units, test:functionals, test:integration together'
+desc 'Runs test:units, test:functionals, test:generators, test:integration together'
 task :test do
   Rails::TestTask.test_creator(Rake.application.top_level_tasks).invoke_rake_task
 end
diff --git a/railties/test/app_rails_loader_test.rb b/railties/test/app_rails_loader_test.rb
index ceae78ae80..92cb3233d8 100644
--- a/railties/test/app_rails_loader_test.rb
+++ b/railties/test/app_rails_loader_test.rb
@@ -22,8 +22,8 @@ class AppRailsLoaderTest < ActiveSupport::TestCase
     exe = "#{script_dir}/rails"
 
     test "is not in a Rails application if #{exe} is not found in the current or parent directories" do
-      File.stubs(:exists?).with('bin/rails').returns(false)
-      File.stubs(:exists?).with('script/rails').returns(false)
+      File.stubs(:exist?).with('bin/rails').returns(false)
+      File.stubs(:exist?).with('script/rails').returns(false)
 
       assert !Rails::AppRailsLoader.exec_app_rails
     end
diff --git a/railties/test/application/assets_test.rb b/railties/test/application/assets_test.rb
index 4de8fcaa38..b235b51d90 100644
--- a/railties/test/application/assets_test.rb
+++ b/railties/test/application/assets_test.rb
@@ -37,7 +37,7 @@ module ApplicationTests
     end
 
     def assert_no_file_exists(filename)
-      assert !File.exists?(filename), "#{filename} does exist"
+      assert !File.exist?(filename), "#{filename} does exist"
     end
 
     test "assets routes have higher priority" do
@@ -293,7 +293,7 @@ module ApplicationTests
 
     test "precompile should handle utf8 filenames" do
       filename = "レイルズ.png"
-      app_file "app/assets/images/#{filename}", "not a image really"
+      app_file "app/assets/images/#{filename}", "not an image really"
       add_to_config "config.assets.precompile = [ /\.png$/, /application.(css|js)$/ ]"
 
       precompile!
@@ -305,7 +305,7 @@ module ApplicationTests
       require "#{app_path}/config/environment"
 
       get "/assets/#{URI.parser.escape(asset_path)}"
-      assert_match "not a image really", last_response.body
+      assert_match "not an image really", last_response.body
       assert_file_exists("#{app_path}/public/assets/#{asset_path}")
     end
 
diff --git a/railties/test/application/basic_rendering_test.rb b/railties/test/application/basic_rendering_test.rb
deleted file mode 100644
index 00ba433a05..0000000000
--- a/railties/test/application/basic_rendering_test.rb
+++ /dev/null
@@ -1,62 +0,0 @@
-require 'isolation/abstract_unit'
-require 'rack/test'
-
-module ApplicationTests
-  class BasicRenderingTest < ActiveSupport::TestCase
-    include ActiveSupport::Testing::Isolation
-    include Rack::Test::Methods
-
-    def setup
-      build_app
-    end
-
-    def teardown
-      teardown_app
-    end
-
-    test "Rendering without ActionView" do
-      gsub_app_file 'config/application.rb', "require 'rails/all'", <<-RUBY
-        require "active_model/railtie"
-        require "action_controller/railtie"
-      RUBY
-
-      # Turn off ActionView and jquery-rails (it depends on AV)
-      $:.reject! {|path| path =~ /(actionview|jquery\-rails)/ }
-      boot_rails
-
-      app_file 'app/controllers/pages_controller.rb', <<-RUBY
-        class PagesController < ApplicationController
-          def render_hello_world
-            render text: "Hello World!"
-          end
-
-          def render_nothing
-            render nothing: true
-          end
-
-          def no_render; end
-
-          def raise_error
-            render foo: "bar"
-          end
-        end
-      RUBY
-
-      get '/pages/render_hello_world'
-      assert_equal 200, last_response.status
-      assert_equal "Hello World!", last_response.body
-      assert_equal "text/plain; charset=utf-8", last_response.content_type
-
-      get '/pages/render_nothing'
-      assert_equal 200, last_response.status
-      assert_equal " ", last_response.body
-      assert_equal "text/plain; charset=utf-8", last_response.content_type
-
-      get '/pages/no_render'
-      assert_equal 500, last_response.status
-
-      get '/pages/raise_error'
-      assert_equal 500, last_response.status
-    end
-  end
-end
diff --git a/railties/test/application/configuration_test.rb b/railties/test/application/configuration_test.rb
index c51488e0e1..03a735b1c1 100644
--- a/railties/test/application/configuration_test.rb
+++ b/railties/test/application/configuration_test.rb
@@ -679,5 +679,12 @@ module ApplicationTests
       end
       assert_equal Logger::INFO, Rails.logger.level
     end
+
+    test "respond_to? accepts include_private" do
+      make_basic_app
+
+      assert_not Rails.configuration.respond_to?(:method_missing)
+      assert Rails.configuration.respond_to?(:method_missing, true)
+    end
   end
 end
diff --git a/railties/test/application/initializers/load_path_test.rb b/railties/test/application/initializers/load_path_test.rb
index b36628ee37..cd05956356 100644
--- a/railties/test/application/initializers/load_path_test.rb
+++ b/railties/test/application/initializers/load_path_test.rb
@@ -71,6 +71,20 @@ module ApplicationTests
       assert Zoo
     end
 
+    test "eager loading accepts Pathnames" do
+      app_file "lib/foo.rb", <<-RUBY
+        module Foo; end
+      RUBY
+
+      add_to_config <<-RUBY
+        config.eager_load = true
+        config.eager_load_paths << Pathname.new("#{app_path}/lib")
+      RUBY
+
+      require "#{app_path}/config/environment"
+      assert Foo
+    end
+
     test "load environment with global" do
       $initialize_test_set_from_env = nil
       app_file "config/environments/development.rb", <<-RUBY
diff --git a/railties/test/application/initializers/notifications_test.rb b/railties/test/application/initializers/notifications_test.rb
index baae6fd928..95655b74cf 100644
--- a/railties/test/application/initializers/notifications_test.rb
+++ b/railties/test/application/initializers/notifications_test.rb
@@ -39,5 +39,18 @@ module ApplicationTests
       assert_equal 1, logger.logged(:debug).size
       assert_match(/SHOW tables/, logger.logged(:debug).last)
     end
+
+    test 'rails load_config_initializer event is instrumented' do
+      app_file 'config/initializers/foo.rb', ''
+
+      events = []
+      callback = ->(*_) { events << _ }
+      ActiveSupport::Notifications.subscribed(callback, 'load_config_initializer.railties') do
+        app
+      end
+
+      assert_equal %w[load_config_initializer.railties], events.map(&:first)
+      assert_includes events.first.last[:initializer], 'config/initializers/foo.rb'
+    end
   end
 end
diff --git a/railties/test/application/middleware/remote_ip_test.rb b/railties/test/application/middleware/remote_ip_test.rb
index 91c5807379..946b82eeb3 100644
--- a/railties/test/application/middleware/remote_ip_test.rb
+++ b/railties/test/application/middleware/remote_ip_test.rb
@@ -33,6 +33,16 @@ module ApplicationTests
       end
     end
 
+    test "works with both headers individually" do
+      make_basic_app
+      assert_nothing_raised(ActionDispatch::RemoteIp::IpSpoofAttackError) do
+        assert_equal "1.1.1.1", remote_ip("HTTP_X_FORWARDED_FOR" => "1.1.1.1")
+      end
+      assert_nothing_raised(ActionDispatch::RemoteIp::IpSpoofAttackError) do
+        assert_equal "1.1.1.2", remote_ip("HTTP_CLIENT_IP" => "1.1.1.2")
+      end
+    end
+
     test "can disable IP spoofing check" do
       make_basic_app do |app|
         app.config.action_dispatch.ip_spoofing_check = false
diff --git a/railties/test/application/middleware_test.rb b/railties/test/application/middleware_test.rb
index 31a35a09bb..20d1d76d78 100644
--- a/railties/test/application/middleware_test.rb
+++ b/railties/test/application/middleware_test.rb
@@ -144,6 +144,12 @@ module ApplicationTests
       assert_equal "Rack::Config", middleware.second
     end
 
+    test 'unshift middleware' do
+      add_to_config 'config.middleware.unshift Rack::Config'
+      boot!
+      assert_equal 'Rack::Config', middleware.first
+    end
+
     test "Rails.cache does not respond to middleware" do
       add_to_config "config.cache_store = :memory_store"
       boot!
diff --git a/railties/test/application/multiple_applications_test.rb b/railties/test/application/multiple_applications_test.rb
index 03c343c475..5bfea599e0 100644
--- a/railties/test/application/multiple_applications_test.rb
+++ b/railties/test/application/multiple_applications_test.rb
@@ -110,7 +110,7 @@ module ApplicationTests
 
       assert_equal 0, $run_count, "Without loading the initializers, the count should be 0"
 
-      # Set config.eager_load to false so that a eager_load warning doesn't pop up
+      # Set config.eager_load to false so that an eager_load warning doesn't pop up
       AppTemplate::Application.new { config.eager_load = false }.initialize!
 
       assert_equal 3, $run_count, "There should have been three initializers that incremented the count"
diff --git a/railties/test/application/rake/dbs_test.rb b/railties/test/application/rake/dbs_test.rb
index 9e711f25bd..4d348c6b4b 100644
--- a/railties/test/application/rake/dbs_test.rb
+++ b/railties/test/application/rake/dbs_test.rb
@@ -33,12 +33,12 @@ module ApplicationTests
         Dir.chdir(app_path) do
           output = `bundle exec rake db:create`
           assert_equal output, ""
-          assert File.exists?(expected[:database])
+          assert File.exist?(expected[:database])
           assert_equal expected[:database],
                         ActiveRecord::Base.connection_config[:database]
           output = `bundle exec rake db:drop`
           assert_equal output, ""
-          assert !File.exists?(expected[:database])
+          assert !File.exist?(expected[:database])
         end
       end
 
diff --git a/railties/test/application/rake/notes_test.rb b/railties/test/application/rake/notes_test.rb
index 01d751e822..05f6338b68 100644
--- a/railties/test/application/rake/notes_test.rb
+++ b/railties/test/application/rake/notes_test.rb
@@ -28,6 +28,7 @@ module ApplicationTests
         app_file "app/assets/stylesheets/application.css.less", "// TODO: note in less"
         app_file "app/controllers/application_controller.rb", 1000.times.map { "" }.join("\n") << "# TODO: note in ruby"
         app_file "lib/tasks/task.rake", "# TODO: note in rake"
+        app_file 'app/views/home/index.html.builder', '# TODO: note in builder'
 
         boot_rails
         require 'rake'
@@ -51,8 +52,9 @@ module ApplicationTests
           assert_match(/note in sass/, output)
           assert_match(/note in less/, output)
           assert_match(/note in rake/, output)
+          assert_match(/note in builder/, output)
 
-          assert_equal 11, lines.size
+          assert_equal 12, lines.size
 
           lines.each do |line|
             assert_equal 4, line[0].size
diff --git a/railties/test/application/rake_test.rb b/railties/test/application/rake_test.rb
index c1cb1c1eba..08316d80e6 100644
--- a/railties/test/application/rake_test.rb
+++ b/railties/test/application/rake_test.rb
@@ -111,7 +111,7 @@ module ApplicationTests
       RUBY
 
       output = Dir.chdir(app_path){ `rake routes` }
-      assert_equal "Prefix Verb URI Pattern     Controller#Action\ncart GET /cart(.:format) cart#show\n", output
+      assert_equal "Prefix Verb URI Pattern     Controller#Action\n  cart GET  /cart(.:format) cart#show\n", output
     end
 
     def test_rake_routes_with_controller_environment
@@ -124,7 +124,7 @@ module ApplicationTests
 
       ENV['CONTROLLER'] = 'cart'
       output = Dir.chdir(app_path){ `rake routes` }
-      assert_equal "Prefix Verb URI Pattern     Controller#Action\ncart GET /cart(.:format) cart#show\n", output
+      assert_equal "Prefix Verb URI Pattern     Controller#Action\n  cart GET  /cart(.:format) cart#show\n", output
     end
 
     def test_rake_routes_displays_message_when_no_routes_are_defined
@@ -227,7 +227,7 @@ module ApplicationTests
         # ensure we have a schema_migrations table to dump
         `bundle exec rake db:migrate db:structure:dump DB_STRUCTURE=db/my_structure.sql`
       end
-      assert File.exists?(File.join(app_path, 'db', 'my_structure.sql'))
+      assert File.exist?(File.join(app_path, 'db', 'my_structure.sql'))
     end
 
     def test_rake_dump_structure_should_be_called_twice_when_migrate_redo
@@ -248,24 +248,24 @@ module ApplicationTests
          rails generate model product name:string;
          bundle exec rake db:migrate db:schema:cache:dump`
       end
-      assert File.exists?(File.join(app_path, 'db', 'schema_cache.dump'))
+      assert File.exist?(File.join(app_path, 'db', 'schema_cache.dump'))
     end
 
     def test_rake_clear_schema_cache
       Dir.chdir(app_path) do
         `bundle exec rake db:schema:cache:dump db:schema:cache:clear`
       end
-      assert !File.exists?(File.join(app_path, 'db', 'schema_cache.dump'))
+      assert !File.exist?(File.join(app_path, 'db', 'schema_cache.dump'))
     end
 
     def test_copy_templates
       Dir.chdir(app_path) do
         `bundle exec rake rails:templates:copy`
         %w(controller mailer scaffold).each do |dir|
-          assert File.exists?(File.join(app_path, 'lib', 'templates', 'erb', dir))
+          assert File.exist?(File.join(app_path, 'lib', 'templates', 'erb', dir))
         end
         %w(controller helper scaffold_controller assets).each do |dir|
-          assert File.exists?(File.join(app_path, 'lib', 'templates', 'rails', dir))
+          assert File.exist?(File.join(app_path, 'lib', 'templates', 'rails', dir))
         end
       end
     end
diff --git a/railties/test/application/test_test.rb b/railties/test/application/test_test.rb
index c7ad2fba8f..6f2f328588 100644
--- a/railties/test/application/test_test.rb
+++ b/railties/test/application/test_test.rb
@@ -24,7 +24,7 @@ module ApplicationTests
         end
       RUBY
 
-      run_test_file 'unit/foo_test.rb'
+      assert_successful_test_run 'unit/foo_test.rb'
     end
 
     test "integration test" do
@@ -49,19 +49,48 @@ module ApplicationTests
         end
       RUBY
 
-      run_test_file 'integration/posts_test.rb'
+      assert_successful_test_run 'integration/posts_test.rb'
+    end
+
+    test "enable full backtraces on test failures" do
+      app_file 'test/unit/failing_test.rb', <<-RUBY
+        require 'test_helper'
+
+        class FailingTest < ActiveSupport::TestCase
+          def test_failure
+            raise "fail"
+          end
+        end
+      RUBY
+
+      output = run_test_file('unit/failing_test.rb', env: { "BACKTRACE" => "1" })
+      assert_match %r{/app/test/unit/failing_test\.rb}, output
     end
 
     private
-      def run_test_file(name)
-        result = ruby '-Itest', "#{app_path}/test/#{name}"
+      def assert_successful_test_run(name)
+        result = run_test_file(name)
         assert_equal 0, $?.to_i, result
       end
 
+      def run_test_file(name, options = {})
+        ruby '-Itest', "#{app_path}/test/#{name}", options
+      end
+
       def ruby(*args)
+        options = args.extract_options!
+        env = options.fetch(:env, {})
+        env["RUBYLIB"] = $:.join(':')
+
         Dir.chdir(app_path) do
-          `RUBYLIB='#{$:.join(':')}' #{Gem.ruby} #{args.join(' ')}`
+          `#{env_string(env)} #{Gem.ruby} #{args.join(' ')}`
         end
       end
+
+      def env_string(variables)
+        variables.map do |key, value|
+          "#{key}='#{value}'"
+        end.join " "
+      end
   end
 end
diff --git a/railties/test/commands/server_test.rb b/railties/test/commands/server_test.rb
index cb57b3c0cd..ba688f1e9e 100644
--- a/railties/test/commands/server_test.rb
+++ b/railties/test/commands/server_test.rb
@@ -27,16 +27,62 @@ class Rails::ServerTest < ActiveSupport::TestCase
   end
 
   def test_environment_with_rails_env
-    with_rails_env 'production' do
-      server = Rails::Server.new
-      assert_equal 'production', server.options[:environment]
+    with_rack_env nil do
+      with_rails_env 'production' do
+        server = Rails::Server.new
+        assert_equal 'production', server.options[:environment]
+      end
     end
   end
 
   def test_environment_with_rack_env
-    with_rack_env 'production' do
-      server = Rails::Server.new
-      assert_equal 'production', server.options[:environment]
+    with_rails_env nil do
+      with_rack_env 'production' do
+        server = Rails::Server.new
+        assert_equal 'production', server.options[:environment]
+      end
+    end
+  end
+
+  def test_log_stdout
+    with_rack_env nil do
+      with_rails_env nil do
+        args    = []
+        options = Rails::Server::Options.new.parse!(args)
+        assert_equal true, options[:log_stdout]
+
+        args    = ["-e", "development"]
+        options = Rails::Server::Options.new.parse!(args)
+        assert_equal true, options[:log_stdout]
+
+        args    = ["-e", "production"]
+        options = Rails::Server::Options.new.parse!(args)
+        assert_equal false, options[:log_stdout]
+
+        with_rack_env 'development' do
+          args    = []
+          options = Rails::Server::Options.new.parse!(args)
+          assert_equal true, options[:log_stdout]
+        end
+
+        with_rack_env 'production' do
+          args    = []
+          options = Rails::Server::Options.new.parse!(args)
+          assert_equal false, options[:log_stdout]
+        end
+
+        with_rails_env 'development' do
+          args    = []
+          options = Rails::Server::Options.new.parse!(args)
+          assert_equal true, options[:log_stdout]
+        end
+
+        with_rails_env 'production' do
+          args    = []
+          options = Rails::Server::Options.new.parse!(args)
+          assert_equal false, options[:log_stdout]
+        end
+      end
     end
   end
 end
diff --git a/railties/test/env_helpers.rb b/railties/test/env_helpers.rb
index 6223c85bbf..330fe150ca 100644
--- a/railties/test/env_helpers.rb
+++ b/railties/test/env_helpers.rb
@@ -1,7 +1,10 @@
+require 'rails'
+
 module EnvHelpers
   private
 
   def with_rails_env(env)
+    Rails.instance_variable_set :@_env, nil
     switch_env 'RAILS_ENV', env do
       switch_env 'RACK_ENV', nil do
         yield
@@ -10,6 +13,7 @@ module EnvHelpers
   end
 
   def with_rack_env(env)
+    Rails.instance_variable_set :@_env, nil
     switch_env 'RACK_ENV', env do
       switch_env 'RAILS_ENV', nil do
         yield
diff --git a/railties/test/generators/app_generator_test.rb b/railties/test/generators/app_generator_test.rb
index 2f0dfc7d3e..6f03cf3083 100644
--- a/railties/test/generators/app_generator_test.rb
+++ b/railties/test/generators/app_generator_test.rb
@@ -4,6 +4,7 @@ require 'generators/shared_generator_tests'
 
 DEFAULT_APP_FILES = %w(
   .gitignore
+  README.rdoc
   Gemfile
   Rakefile
   config.ru
@@ -28,6 +29,7 @@ DEFAULT_APP_FILES = %w(
   lib/tasks
   lib/assets
   log
+  test/test_helper.rb
   test/fixtures
   test/controllers
   test/models
@@ -36,6 +38,8 @@ DEFAULT_APP_FILES = %w(
   test/integration
   vendor
   vendor/assets
+  vendor/assets/stylesheets
+  vendor/assets/javascripts
   tmp/cache
   tmp/cache/assets
 )
@@ -57,6 +61,7 @@ class AppGeneratorTest < Rails::Generators::TestCase
     assert_file("app/views/layouts/application.html.erb", /stylesheet_link_tag\s+"application", media: "all", "data-turbolinks-track" => true/)
     assert_file("app/views/layouts/application.html.erb", /javascript_include_tag\s+"application", "data-turbolinks-track" => true/)
     assert_file("app/assets/stylesheets/application.css")
+    assert_file("app/assets/javascripts/application.js")
   end
 
   def test_invalid_application_name_raises_an_error
@@ -155,6 +160,58 @@ class AppGeneratorTest < Rails::Generators::TestCase
     end
   end
 
+  def test_add_gemfile_entry
+    template = Tempfile.open 'my_template'
+    template.puts 'gemfile_entry "tenderlove"'
+    template.flush
+
+    run_generator([destination_root, "-m", template.path])
+    assert_file "Gemfile", /tenderlove/
+  ensure
+    template.close
+    template.unlink
+  end
+
+  def test_add_skip_entry
+    template = Tempfile.open 'my_template'
+    template.puts 'add_gem_entry_filter { |gem| gem.name != "jbuilder" }'
+    template.flush
+
+    run_generator([destination_root, "-m", template.path])
+    assert_file "Gemfile" do |contents|
+      assert_no_match 'jbuilder', contents
+    end
+  ensure
+    template.close
+    template.unlink
+  end
+
+  def test_skip_turbolinks_when_it_is_not_on_gemfile
+    template = Tempfile.open 'my_template'
+    template.puts 'add_gem_entry_filter { |gem| gem.name != "turbolinks" }'
+    template.flush
+
+    run_generator([destination_root, "-m", template.path])
+    assert_file "Gemfile" do |contents|
+      assert_no_match 'turbolinks', contents
+    end
+
+    assert_file "app/views/layouts/application.html.erb" do |contents|
+      assert_no_match 'turbolinks', contents
+    end
+
+    assert_file "app/views/layouts/application.html.erb" do |contents|
+      assert_no_match('data-turbolinks-track', contents)
+    end
+
+    assert_file "app/assets/javascripts/application.js" do |contents|
+      assert_no_match 'turbolinks', contents
+    end
+  ensure
+    template.close
+    template.unlink
+  end
+
   def test_config_another_database
     run_generator([destination_root, "-d", "mysql"])
     assert_file "config/database.yml", /mysql/
@@ -254,28 +311,15 @@ class AppGeneratorTest < Rails::Generators::TestCase
     if defined?(JRUBY_VERSION)
       assert_gem "therubyrhino"
     else
-      assert_file "Gemfile", /# gem\s+["']therubyracer["']+, platforms: :ruby$/
+      assert_file "Gemfile", /# gem\s+["']therubyracer["']+, \s+platforms: :ruby$/
     end
   end
 
-  def test_creation_of_a_test_directory
-    run_generator
-    assert_file 'test'
-  end
-
-  def test_creation_of_app_assets_images_directory
-    run_generator
-    assert_file "app/assets/images"
-  end
-
-  def test_creation_of_vendor_assets_javascripts_directory
-    run_generator
-    assert_file "vendor/assets/javascripts"
-  end
-
-  def test_creation_of_vendor_assets_stylesheets_directory
-    run_generator
-    assert_file "vendor/assets/stylesheets"
+  def test_inclusion_of_plateform_dependent_gems
+    run_generator([destination_root])
+    if RUBY_ENGINE == 'rbx'
+      assert_gem 'rubysl'
+    end
   end
 
   def test_jquery_is_the_default_javascript_library
@@ -284,7 +328,7 @@ class AppGeneratorTest < Rails::Generators::TestCase
       assert_match %r{^//= require jquery}, contents
       assert_match %r{^//= require jquery_ujs}, contents
     end
-    assert_file "Gemfile", /^gem 'jquery-rails'/
+    assert_gem "jquery-rails"
   end
 
   def test_other_javascript_libraries
@@ -298,18 +342,26 @@ class AppGeneratorTest < Rails::Generators::TestCase
 
   def test_javascript_is_skipped_if_required
     run_generator [destination_root, "--skip-javascript"]
-    assert_file "app/assets/javascripts/application.js" do |contents|
-      assert_no_match %r{^//=\s+require\s}, contents
-    end
+
+    assert_no_file "app/assets/javascripts"
+    assert_no_file "vendor/assets/javascripts"
+
     assert_file "app/views/layouts/application.html.erb" do |contents|
       assert_match(/stylesheet_link_tag\s+"application", media: "all" %>/, contents)
-      assert_match(/javascript_include_tag\s+"application" \%>/, contents)
+      assert_no_match(/javascript_include_tag\s+"application" \%>/, contents)
     end
+
     assert_file "Gemfile" do |content|
-      assert_match(/coffee-rails/, content)
+      assert_no_match(/coffee-rails/, content)
+      assert_no_match(/jquery-rails/, content)
     end
   end
 
+  def test_inclusion_of_jbuilder
+    run_generator
+    assert_file "Gemfile", /gem 'jbuilder'/
+  end
+
   def test_inclusion_of_debugger
     run_generator
     assert_file "Gemfile", /# gem 'debugger'/
@@ -317,7 +369,7 @@ class AppGeneratorTest < Rails::Generators::TestCase
 
   def test_inclusion_of_lazy_loaded_sdoc
     run_generator
-    assert_file 'Gemfile', /gem 'sdoc', require: false/
+    assert_file 'Gemfile', /gem 'sdoc', \s+group: :doc, require: false/
   end
 
   def test_template_from_dir_pwd
@@ -367,6 +419,16 @@ class AppGeneratorTest < Rails::Generators::TestCase
     assert_no_match(/run  bundle install/, output)
   end
 
+  def test_application_name_with_spaces
+    path = File.join(destination_root, "foo bar".shellescape)
+
+    # This also applies to MySQL apps but not with SQLite
+    run_generator [path, "-d", 'postgresql']
+
+    assert_file "foo bar/config/database.yml", /database: foo_bar_development/
+    assert_file "foo bar/config/initializers/session_store.rb", /key: '_foo_bar/
+  end
+
 protected
 
   def action(*args, &block)
diff --git a/railties/test/generators/argv_scrubber_test.rb b/railties/test/generators/argv_scrubber_test.rb
new file mode 100644
index 0000000000..a94350cbd7
--- /dev/null
+++ b/railties/test/generators/argv_scrubber_test.rb
@@ -0,0 +1,136 @@
+require 'active_support/test_case'
+require 'active_support/testing/autorun'
+require 'rails/generators/rails/app/app_generator'
+require 'tempfile'
+
+module Rails
+  module Generators
+    class ARGVScrubberTest < ActiveSupport::TestCase # :nodoc:
+      # Future people who read this... These tests are just to surround the
+      # current behavior of the ARGVScrubber, they do not mean that the class
+      # *must* act this way, I just want to prevent regressions.
+
+      def test_version
+        ['-v', '--version'].each do |str|
+          scrubber = ARGVScrubber.new [str]
+          output    = nil
+          exit_code = nil
+          scrubber.extend(Module.new {
+            define_method(:puts) { |str| output = str }
+            define_method(:exit) { |code| exit_code = code }
+          })
+          scrubber.prepare!
+          assert_equal "Rails #{Rails::VERSION::STRING}", output
+          assert_equal 0, exit_code
+        end
+      end
+
+      def test_default_help
+        argv = ['zomg', 'how', 'are', 'you']
+        scrubber = ARGVScrubber.new argv
+        args = scrubber.prepare!
+        assert_equal ['--help'] + argv.drop(1), args
+      end
+
+      def test_prepare_returns_args
+        scrubber = ARGVScrubber.new ['hi mom']
+        args = scrubber.prepare!
+        assert_equal '--help', args.first
+      end
+
+      def test_no_mutations
+        scrubber = ARGVScrubber.new ['hi mom'].freeze
+        args = scrubber.prepare!
+        assert_equal '--help', args.first
+      end
+
+      def test_new_command_no_rc
+        scrubber = Class.new(ARGVScrubber) {
+          def self.default_rc_file
+            File.join(Dir.tmpdir, 'whatever')
+          end
+        }.new ['new']
+        args = scrubber.prepare!
+        assert_equal [], args
+      end
+
+      def test_new_homedir_rc
+        file = Tempfile.new 'myrcfile'
+        file.puts '--hello-world'
+        file.flush
+
+        message = nil
+        scrubber = Class.new(ARGVScrubber) {
+          define_singleton_method(:default_rc_file) do
+            file.path
+          end
+          define_method(:puts) { |msg| message = msg }
+        }.new ['new']
+        args = scrubber.prepare!
+        assert_equal ['--hello-world'], args
+        assert_match 'hello-world', message
+        assert_match file.path, message
+      ensure
+        file.close
+        file.unlink
+      end
+
+      def test_rc_whitespace_separated
+        file = Tempfile.new 'myrcfile'
+        file.puts '--hello --world'
+        file.flush
+
+        message = nil
+        scrubber = Class.new(ARGVScrubber) {
+          define_method(:puts) { |msg| message = msg }
+        }.new ['new', "--rc=#{file.path}"]
+        args = scrubber.prepare!
+        assert_equal ['--hello', '--world'], args
+      ensure
+        file.close
+        file.unlink
+      end
+
+      def test_new_rc_option
+        file = Tempfile.new 'myrcfile'
+        file.puts '--hello-world'
+        file.flush
+
+        message = nil
+        scrubber = Class.new(ARGVScrubber) {
+          define_method(:puts) { |msg| message = msg }
+        }.new ['new', "--rc=#{file.path}"]
+        args = scrubber.prepare!
+        assert_equal ['--hello-world'], args
+        assert_match 'hello-world', message
+        assert_match file.path, message
+      ensure
+        file.close
+        file.unlink
+      end
+
+      def test_new_rc_option_and_custom_options
+        file = Tempfile.new 'myrcfile'
+        file.puts '--hello'
+        file.puts '--world'
+        file.flush
+
+        scrubber = Class.new(ARGVScrubber) {
+          define_method(:puts) { |msg| }
+        }.new ['new', 'tenderapp', '--love', "--rc=#{file.path}"]
+
+        args = scrubber.prepare!
+        assert_equal ["tenderapp", "--hello", "--world", "--love"], args
+      ensure
+        file.close
+        file.unlink
+      end
+
+      def test_no_rc
+        scrubber = ARGVScrubber.new ['new', '--no-rc']
+        args = scrubber.prepare!
+        assert_equal [], args
+      end
+    end
+  end
+end
diff --git a/railties/test/generators/controller_generator_test.rb b/railties/test/generators/controller_generator_test.rb
index 9c664a903a..2268f04839 100644
--- a/railties/test/generators/controller_generator_test.rb
+++ b/railties/test/generators/controller_generator_test.rb
@@ -43,6 +43,12 @@ class ControllerGeneratorTest < Rails::Generators::TestCase
     assert_file "app/assets/stylesheets/account.css"
   end
 
+  def test_does_not_invoke_assets_if_required
+    run_generator ["account", "--skip-assets"]
+    assert_no_file "app/assets/javascripts/account.js"
+    assert_no_file "app/assets/stylesheets/account.css"
+  end
+
   def test_invokes_default_test_framework
     run_generator
     assert_file "test/controllers/account_controller_test.rb"
diff --git a/railties/test/generators/generator_test.rb b/railties/test/generators/generator_test.rb
new file mode 100644
index 0000000000..94d2c1bf50
--- /dev/null
+++ b/railties/test/generators/generator_test.rb
@@ -0,0 +1,86 @@
+require 'active_support/test_case'
+require 'active_support/testing/autorun'
+require 'rails/generators/app_base'
+require 'rails/generators/rails/app/app_generator'
+
+module Rails
+  module Generators
+    class GeneratorTest < ActiveSupport::TestCase
+      def make_builder_class
+        Class.new(AppBase) do
+          add_shared_options_for "application"
+
+          # include a module to get around thor's method_added hook
+          include(Module.new {
+            def gemfile_entries; super; end
+            def invoke_all; super; self; end
+            def add_gem_entry_filter; super; end
+            def gemfile_entry(*args); super; end
+          })
+        end
+      end
+
+      def test_construction
+        klass     = make_builder_class
+        assert klass.start(['new', 'blah'])
+      end
+
+      def test_add_gem
+        klass = make_builder_class
+        generator = klass.start(['new', 'blah'])
+        generator.gemfile_entry 'tenderlove'
+        assert_includes generator.gemfile_entries.map(&:name), 'tenderlove'
+      end
+
+      def test_add_gem_with_version
+        klass = make_builder_class
+        generator = klass.start(['new', 'blah'])
+        generator.gemfile_entry 'tenderlove', '2.0.0'
+        assert generator.gemfile_entries.find { |gfe|
+          gfe.name == 'tenderlove' && gfe.version == '2.0.0'
+        }
+      end
+
+      def test_add_github_gem
+        klass = make_builder_class
+        generator = klass.start(['new', 'blah'])
+        generator.gemfile_entry 'tenderlove', github: 'hello world'
+        assert generator.gemfile_entries.find { |gfe|
+          gfe.name == 'tenderlove' && gfe.options[:github] == 'hello world'
+        }
+      end
+
+      def test_add_path_gem
+        klass = make_builder_class
+        generator = klass.start(['new', 'blah'])
+        generator.gemfile_entry 'tenderlove', path: 'hello world'
+        assert generator.gemfile_entries.find { |gfe|
+          gfe.name == 'tenderlove' && gfe.options[:path] == 'hello world'
+        }
+      end
+
+      def test_filter
+        klass     = make_builder_class
+        generator = klass.start(['new', 'blah'])
+        gems      = generator.gemfile_entries
+        generator.add_gem_entry_filter { |gem|
+          gem.name != gems.first.name
+        }
+        assert_equal gems.drop(1), generator.gemfile_entries
+      end
+
+      def test_two_filters
+        klass     = make_builder_class
+        generator = klass.start(['new', 'blah'])
+        gems      = generator.gemfile_entries
+        generator.add_gem_entry_filter { |gem|
+          gem.name != gems.first.name
+        }
+        generator.add_gem_entry_filter { |gem|
+          gem.name != gems[1].name
+        }
+        assert_equal gems.drop(2), generator.gemfile_entries
+      end
+    end
+  end
+end
diff --git a/railties/test/generators/named_base_test.rb b/railties/test/generators/named_base_test.rb
index 2bc2c33a72..ac5cfff229 100644
--- a/railties/test/generators/named_base_test.rb
+++ b/railties/test/generators/named_base_test.rb
@@ -117,6 +117,25 @@ class NamedBaseTest < Rails::Generators::TestCase
     assert Rails::Generators.hidden_namespaces.include?('hidden')
   end
 
+  def test_scaffold_plural_names_with_model_name_option
+    g = generator ['Admin::Foo'], model_name: 'User'
+    assert_name g, 'user',        :singular_name
+    assert_name g, 'User',        :name
+    assert_name g, 'user',        :file_path
+    assert_name g, 'User',        :class_name
+    assert_name g, 'user',        :file_name
+    assert_name g, 'User',        :human_name
+    assert_name g, 'users',       :plural_name
+    assert_name g, 'user',        :i18n_scope
+    assert_name g, 'users',       :table_name
+    assert_name g, 'Admin::Foos', :controller_name
+    assert_name g, %w(admin),     :controller_class_path
+    assert_name g, 'Admin::Foos', :controller_class_name
+    assert_name g, 'admin/foos',  :controller_file_path
+    assert_name g, 'foos',        :controller_file_name
+    assert_name g, 'admin.foos',  :controller_i18n_scope
+  end
+
   protected
 
     def assert_name(generator, value, method)
diff --git a/railties/test/generators/plugin_generator_test.rb b/railties/test/generators/plugin_generator_test.rb
index 068eb66bc6..c6b91e7cba 100644
--- a/railties/test/generators/plugin_generator_test.rb
+++ b/railties/test/generators/plugin_generator_test.rb
@@ -293,7 +293,7 @@ class PluginGeneratorTest < Rails::Generators::TestCase
     assert_file "Gemfile" do |contents|
       assert_no_match('gemspec', contents)
       assert_match(/gem "rails", "~> #{Rails.version}"/, contents)
-      assert_match(/group :development do\n  gem "sqlite3"\nend/, contents)
+      assert_match_sqlite3(contents)
       assert_no_match(/# gem "jquery-rails"/, contents)
     end
   end
@@ -304,7 +304,7 @@ class PluginGeneratorTest < Rails::Generators::TestCase
     assert_file "Gemfile" do |contents|
       assert_no_match('gemspec', contents)
       assert_match(/gem "rails", "~> #{Rails.version}"/, contents)
-      assert_match(/group :development do\n  gem "sqlite3"\nend/, contents)
+      assert_match_sqlite3(contents)
     end
   end
 
@@ -347,4 +347,12 @@ protected
   def default_files
     ::DEFAULT_PLUGIN_FILES
   end
+
+  def assert_match_sqlite3(contents)
+    unless defined?(JRUBY_VERSION)
+      assert_match(/group :development do\n  gem "sqlite3"\nend/, contents)
+    else
+      assert_match(/group :development do\n  gem "activerecord-jdbcsqlite3-adapter"\nend/, contents)
+    end
+  end
 end
diff --git a/railties/test/generators/scaffold_controller_generator_test.rb b/railties/test/generators/scaffold_controller_generator_test.rb
index 013cb78252..26e56a162c 100644
--- a/railties/test/generators/scaffold_controller_generator_test.rb
+++ b/railties/test/generators/scaffold_controller_generator_test.rb
@@ -166,4 +166,13 @@ class ScaffoldControllerGeneratorTest < Rails::Generators::TestCase
       assert_match(/render action: 'new'/, content)
     end
   end
+
+  def test_model_name_option
+    run_generator ["Admin::User", "--model-name=User"]
+    assert_file "app/controllers/admin/users_controller.rb" do |content|
+      assert_instance_method :index, content do |m|
+        assert_match("@users = User.all", m)
+      end
+    end
+  end
 end
diff --git a/railties/test/generators/shared_generator_tests.rb b/railties/test/generators/shared_generator_tests.rb
index 369a0ee46c..7184639d23 100644
--- a/railties/test/generators/shared_generator_tests.rb
+++ b/railties/test/generators/shared_generator_tests.rb
@@ -46,11 +46,6 @@ module SharedGeneratorTests
     assert_no_file "test"
   end
 
-  def test_options_before_application_name_raises_an_error
-    content = capture(:stderr){ run_generator(["--pretend", destination_root]) }
-    assert_match(/Options should be given after the \w+ name. For details run: rails( plugin new)? --help\n/, content)
-  end
-
   def test_name_collision_raises_an_error
     reserved_words = %w[application destroy plugin runner test]
     reserved_words.each do |reserved|
diff --git a/railties/test/generators/task_generator_test.rb b/railties/test/generators/task_generator_test.rb
index 9399be9510..d5bd44b9db 100644
--- a/railties/test/generators/task_generator_test.rb
+++ b/railties/test/generators/task_generator_test.rb
@@ -7,6 +7,18 @@ class TaskGeneratorTest < Rails::Generators::TestCase
 
   def test_task_is_created
     run_generator
-    assert_file "lib/tasks/feeds.rake", /namespace :feeds/
+    assert_file "lib/tasks/feeds.rake" do |content|
+      assert_match(/namespace :feeds/, content)
+      assert_match(/task foo:/, content)
+      assert_match(/task bar:/, content)
+    end
+  end
+
+  def test_task_on_revoke
+    task_path = 'lib/tasks/feeds.rake'
+    run_generator
+    assert_file task_path
+    run_generator ['feeds'], behavior: :revoke
+    assert_no_file task_path
   end
 end
diff --git a/railties/test/generators_test.rb b/railties/test/generators_test.rb
index 5130b285a9..eac28badfe 100644
--- a/railties/test/generators_test.rb
+++ b/railties/test/generators_test.rb
@@ -15,7 +15,7 @@ class GeneratorsTest < Rails::Generators::TestCase
   end
 
   def test_simple_invoke
-    assert File.exists?(File.join(@path, 'generators', 'model_generator.rb'))
+    assert File.exist?(File.join(@path, 'generators', 'model_generator.rb'))
     TestUnit::Generators::ModelGenerator.expects(:start).with(["Account"], {})
     Rails::Generators.invoke("test_unit:model", ["Account"])
   end
@@ -31,7 +31,7 @@ class GeneratorsTest < Rails::Generators::TestCase
   end
 
   def test_should_give_higher_preference_to_rails_generators
-    assert File.exists?(File.join(@path, 'generators', 'model_generator.rb'))
+    assert File.exist?(File.join(@path, 'generators', 'model_generator.rb'))
     Rails::Generators::ModelGenerator.expects(:start).with(["Account"], {})
     warnings = capture(:stderr){ Rails::Generators.invoke :model, ["Account"] }
     assert warnings.empty?
diff --git a/railties/test/paths_test.rb b/railties/test/paths_test.rb
index 12f18b9dbf..ed4559ec6f 100644
--- a/railties/test/paths_test.rb
+++ b/railties/test/paths_test.rb
@@ -3,7 +3,7 @@ require 'rails/paths'
 
 class PathsTest < ActiveSupport::TestCase
   def setup
-    File.stubs(:exists?).returns(true)
+    File.stubs(:exist?).returns(true)
     @root = Rails::Paths::Root.new("/foo/bar")
   end
 
@@ -180,7 +180,7 @@ class PathsTest < ActiveSupport::TestCase
     assert_equal 1, @root.eager_load.select {|p| p == @root["app"].expanded.first }.size
   end
 
-  test "paths added to a eager_load path should be added to the eager_load collection" do
+  test "paths added to an eager_load path should be added to the eager_load collection" do
     @root["app"] = "/app"
     @root["app"].eager_load!
     @root["app"] << "/app2"
diff --git a/railties/test/railties/engine_test.rb b/railties/test/railties/engine_test.rb
index d095535abd..3075ffee0d 100644
--- a/railties/test/railties/engine_test.rb
+++ b/railties/test/railties/engine_test.rb
@@ -90,8 +90,8 @@ module RailtiesTest
       Dir.chdir(app_path) do
         output = `bundle exec rake bukkits:install:migrations`
 
-        assert File.exists?("#{app_path}/db/migrate/2_create_users.bukkits.rb")
-        assert File.exists?("#{app_path}/db/migrate/3_add_last_name_to_users.bukkits.rb")
+        assert File.exist?("#{app_path}/db/migrate/2_create_users.bukkits.rb")
+        assert File.exist?("#{app_path}/db/migrate/3_add_last_name_to_users.bukkits.rb")
         assert_match(/Copied migration 2_create_users.bukkits.rb from bukkits/, output)
         assert_match(/Copied migration 3_add_last_name_to_users.bukkits.rb from bukkits/, output)
         assert_match(/NOTE: Migration 3_create_sessions.rb from bukkits has been skipped/, output)
@@ -136,7 +136,7 @@ module RailtiesTest
 
       Dir.chdir(@plugin.path) do
         output = `bundle exec rake app:bukkits:install:migrations`
-        assert File.exists?("#{app_path}/db/migrate/0_add_first_name_to_users.bukkits.rb")
+        assert File.exist?("#{app_path}/db/migrate/0_add_first_name_to_users.bukkits.rb")
         assert_match(/Copied migration 0_add_first_name_to_users.bukkits.rb from bukkits/, output)
         assert_equal 1, Dir["#{app_path}/db/migrate/*.rb"].length
       end