Load deprecated tasks for plugins.

railties/lib/rails/plugin.rb

@@ -23,6 +23,17 @@ module Rails
 
     attr_reader :name, :path
 
+    def load_tasks
+      super
+      extra_tasks = Dir["#{root}/{tasks,rails/tasks}/**/*.rake"]
+
+      unless extra_tasks.empty?
+        ActiveSupport::Deprecation.warn "Having rake tasks in PLUGIN_PATH/tasks or " <<
+          "PLUGIN_PATH/rails/tasks is deprecated. Use to PLUGIN_PATH/lib/tasks instead"
+        extra_tasks.sort.each { |ext| load(ext) }
+      end
+    end
+
     def initialize(root)
       @name = File.basename(root).to_sym
       config.root = root

railties/test/plugins/vendored_test.rb

@@ -145,6 +145,40 @@ module PluginsTest
       response = Rails.application.call(Rack::MockRequest.env_for("/sprokkit"))
       assert_equal "I am a Sprokkit", response[2].join
     end
+
+    test "tasks are loaded by default" do
+      $executed = false
+      @plugin.write "lib/tasks/foo.rake", <<-RUBY
+        task :foo do
+          $executed = true
+        end
+      RUBY
+
+      boot_rails
+      require 'rake'
+      require 'rake/rdoctask'
+      require 'rake/testtask'
+      Rails.application.load_tasks
+      Rake::Task[:foo].invoke
+      assert $executed
+    end
+
+    test "deprecated tasks are also loaded" do
+      $executed = false
+      @plugin.write "tasks/foo.rake", <<-RUBY
+        task :foo do
+          $executed = true
+        end
+      RUBY
+
+      boot_rails
+      require 'rake'
+      require 'rake/rdoctask'
+      require 'rake/testtask'
+      Rails.application.load_tasks
+      Rake::Task[:foo].invoke
+      assert $executed
+    end
   end
 
   class VendoredOrderingTest < Test::Unit::TestCase