Merge pull request #1793 from jamesarosen/clean_images

rake assets:clean also removes directories

railties/lib/rails/tasks/assets.rake

@@ -19,8 +19,8 @@ namespace :assets do
     public_asset_path = Rails.public_path + assets.prefix
     file_list = FileList.new("#{public_asset_path}/**/*")
     file_list.each do |file|
-      rm file
-      rm "#{file}.gz", :force => true
+      rm_rf file
+      rm_rf "#{file}.gz"
     end
   end
 end

railties/test/application/assets_test.rb

@@ -43,9 +43,23 @@ module ApplicationTests
       end
 
       file = Dir["#{app_path}/public/assets/application-*.js"][0]
+      assert_not_nil file, "Expected application.js asset to be generated, but none found"
       assert_equal "alert();\n", File.read(file)
     end
 
+    test "assets are cleaned up properly" do
+      app_file "public/assets/application.js", "alert();"
+      app_file "public/assets/application.css", "a { color: green; }"
+      app_file "public/assets/subdir/broken.png", "not really an image file"
+
+      capture(:stdout) do
+        Dir.chdir(app_path){ `bundle exec rake assets:clean` }
+      end
+
+      files = Dir["#{app_path}/public/assets/**/*"]
+      assert_equal 0, files.length, "Expected no assets, but found #{files.join(', ')}"
+    end
+
     test "does not stream session cookies back" do
       app_file "app/assets/javascripts/demo.js.erb", "<%= :alert %>();"