Remove all calls to Rails::Initializer from boot.rb

This is starting a refactor of the rails initialization process. The boot.rb file will not remain the same.

railties/lib/rails/generators/rails/app/templates/config/boot.rb

@@ -4,6 +4,11 @@
 RAILS_ROOT = "#{File.dirname(__FILE__)}/.." unless defined?(RAILS_ROOT)
 
 module Rails
+  # Mark the version of Rails that generated the boot.rb file. This is
+  # a temporary solution and will most likely be removed as Rails 3.0
+  # comes closer.
+  BOOTSTRAP_VERSION = "3.0"
+
   class << self
     def boot!
       unless booted?
@@ -36,20 +41,50 @@ module Rails
   class Boot
     def run
       load_initializer
-      Rails::Initializer.run(:set_load_path)
+      set_load_paths
+    end
+
+    def set_load_paths
+      %w(
+        railties
+        railties/lib
+        activesupport/lib
+        actionpack/lib
+        activerecord/lib
+        actionmailer/lib
+        activeresource/lib
+        actionwebservice/lib
+      ).reverse_each do |path|
+        path = "#{framework_root_path}/#{path}"
+        $LOAD_PATH.unshift(path) if File.directory?(path)
+        $LOAD_PATH.uniq!
+      end
+    end
+
+    def framework_root_path
+      defined?(::RAILS_FRAMEWORK_ROOT) ? ::RAILS_FRAMEWORK_ROOT : "#{RAILS_ROOT}/vendor/rails"
     end
   end
 
   class VendorBoot < Boot
     def load_initializer
-      # activesupport/lib
-      %w(railties/lib).each do |path|
-        $:.unshift("#{RAILS_ROOT}/vendor/rails/#{path}")
-      end
+      $:.unshift("#{framework_root_path}/railties/lib")
       require "rails"
-      Rails::Initializer.run(:install_gem_spec_stubs)
+      install_gem_spec_stubs
       Rails::GemDependency.add_frozen_gem_path
     end
+
+    def install_gem_spec_stubs
+      begin; require "rubygems"; rescue LoadError; return; end
+
+      %w(rails activesupport activerecord actionpack actionmailer activeresource).each do |stub|
+        Gem.loaded_specs[stub] ||= Gem::Specification.new do |s|
+          s.name = stub
+          s.version = Rails::VERSION::STRING
+          s.loaded_from = ""
+        end
+      end
+    end
   end
 
   class GemBoot < Boot

railties/lib/rails/generators/rails/app/templates/config/environment.rb

@@ -6,9 +6,7 @@
 # Bootstrap the Rails environment, frameworks, and default configuration
 require File.join(File.dirname(__FILE__), 'boot')
 
-module <%= app_name.camelize %>; end
-
-<%= app_name.camelize %>::Application = Rails::Initializer.run do |config|
+Rails::Initializer.run do |config|
   # Settings in config/environments/* take precedence over those specified here.
   # Application configuration should go into files in config/initializers
   # -- all .rb files in that directory are automatically loaded.

railties/lib/rails/initializer.rb

@@ -123,33 +123,16 @@ module Rails
     require 'rails/ruby_version_check'
   end
 
-  # If Rails is vendored and RubyGems is available, install stub GemSpecs
-  # for Rails, Active Support, Active Record, Action Pack, Action Mailer, and
-  # Active Resource. This allows Gem plugins to depend on Rails even when
-  # the Gem version of Rails shouldn't be loaded.
-  Initializer.default.add :install_gem_spec_stubs do
-    unless Rails.respond_to?(:vendor_rails?)
+  # Bail if boot.rb is outdated
+  Initializer.default.add :freak_out_if_boot_rb_is_outdated do
+    unless defined?(Rails::BOOTSTRAP_VERSION)
       abort %{Your config/boot.rb is outdated: Run "rake rails:update".}
     end
-
-    if Rails.vendor_rails?
-      begin; require "rubygems"; rescue LoadError; return; end
-
-      %w(rails activesupport activerecord actionpack actionmailer activeresource).each do |stub|
-        Gem.loaded_specs[stub] ||= Gem::Specification.new do |s|
-          s.name = stub
-          s.version = Rails::VERSION::STRING
-          s.loaded_from = ""
-        end
-      end
-    end
   end
 
   # Set the <tt>$LOAD_PATH</tt> based on the value of
   # Configuration#load_paths. Duplicates are removed.
   Initializer.default.add :set_load_path do
-    # TODO: Think about unifying this with the general Rails paths
-    configuration.framework_paths.reverse_each { |dir| $LOAD_PATH.unshift(dir) if File.directory?(dir) }
     configuration.paths.add_to_load_path
     $LOAD_PATH.uniq!
   end

railties/test/boot_test.rb

@@ -48,13 +48,6 @@ class BootTest < Test::Unit::TestCase
     Rails::GemBoot.any_instance.expects(:run).returns('result')
     assert_equal 'result', Rails.boot!
   end
-
-  def test_run_loads_initializer_and_sets_load_path
-    boot = Rails::Boot.new
-    boot.expects(:load_initializer)
-    Rails::Initializer.expects(:run).with(:set_load_path)
-    boot.run
-  end
 end
 
 class VendorBootTest < Test::Unit::TestCase
@@ -63,7 +56,7 @@ class VendorBootTest < Test::Unit::TestCase
   def test_load_initializer_requires_from_vendor_rails
     boot = VendorBoot.new
     boot.expects(:require).with("rails")
-    Rails::Initializer.expects(:run).with(:install_gem_spec_stubs)
+    boot.expects(:install_gem_spec_stubs)
     Rails::GemDependency.expects(:add_frozen_gem_path)
     boot.load_initializer
   end

railties/test/initializer/boot_test.rb

@@ -0,0 +1,16 @@
+require "isolation/abstract_unit"
+
+module BootTests
+  class GemBooting < Test::Unit::TestCase
+    include ActiveSupport::Testing::Isolation
+
+    def setup
+      # build_app
+      # boot_rails
+    end
+
+    test "booting rails sets the load paths correctly" do
+      # This test is pending reworking the boot process
+    end
+  end
+end

railties/test/isolation/abstract_unit.rb

@@ -97,20 +97,16 @@ module TestHelpers
     end
 
     def boot_rails
-      # return if defined?(RAILS)
-      # TODO: Get this working with boot.rb
-      $:.unshift "#{RAILS_FRAMEWORK_ROOT}/railties/lib"
-      Object.class_eval <<-RUBY
-        RAILS_ROOT = "#{app_path}"
-        module ::Rails
-          def self.vendor_rails?
-            true
-          end
+      # TMP mega hax to prevent boot.rb from actually booting
+      Object.class_eval <<-RUBY, __FILE__, __LINE__+1
+        module Rails
+          Initializer = 'lol'
+          require "#{app_path}/config/boot"
+          remove_const(:Initializer)
+          booter = VendorBoot.new
+          booter.run
         end
       RUBY
-      require "rails"
-      Rails::Initializer.run(:install_gem_spec_stubs)
-      Rails::GemDependency.add_frozen_gem_path
     end
   end
 end