Initializer to sort files before eager loading. [#859 state:resolved]

Changed Rails::Initializer to sort files before eager loading them. This ensures that
any files in a parent directory will be loaded before files in a subdirectory of the
'same' name. i.e. zoo.rb will be loaded before zoo/reptile_house.rb

Signed-off-by: Pratik Naik <pratiknaik@gmail.com>

railties/lib/initializer.rb

@@ -356,7 +356,7 @@ Run `rake gems:install` to install the missing gems.
       if configuration.cache_classes
         configuration.eager_load_paths.each do |load_path|
           matcher = /\A#{Regexp.escape(load_path)}(.*)\.rb\Z/
-          Dir.glob("#{load_path}/**/*.rb").each do |file|
+          Dir.glob("#{load_path}/**/*.rb").sort.each do |file|
             require_dependency file.sub(matcher, '\1')
           end
         end

railties/test/fixtures/eager/zoo.rb

@@ -0,0 +1,3 @@
+class Zoo
+  include ReptileHouse
+end

railties/test/fixtures/eager/zoo/reptile_house.rb

@@ -0,0 +1,2 @@
+module Zoo::ReptileHouse
+end

railties/test/initializer_test.rb

@@ -30,6 +30,24 @@ class Initializer_load_environment_Test < Test::Unit::TestCase
 
 end
 
+class Initializer_eager_loading_Test < Test::Unit::TestCase
+  def setup
+    @config = ConfigurationMock.new("")
+    @config.cache_classes = true
+    @config.load_paths = [File.expand_path(File.dirname(__FILE__) + "/fixtures/eager")]
+    @config.eager_load_paths = [File.expand_path(File.dirname(__FILE__) + "/fixtures/eager")]
+    @initializer = Rails::Initializer.new(@config)
+    @initializer.set_load_path
+    @initializer.set_autoload_paths
+  end
+
+  def test_eager_loading_loads_parent_classes_before_children
+    assert_nothing_raised do
+      @initializer.load_application_classes
+    end
+  end
+end
+
 uses_mocha 'Initializer after_initialize' do
   class Initializer_after_initialize_with_blocks_environment_Test < Test::Unit::TestCase
     def setup