Add tests for explicit engines.

1 files changed, 19 insertions, 0 deletions

diff --git a/railties/lib/rails/application/configurable.rb b/railties/lib/rails/application/configurable.rb
new file mode 100644
index 0000000000..f598e33965
--- /dev/null
+++ b/railties/lib/rails/application/configurable.rb
@@ -0,0 +1,19 @@
+module Rails
+  class Application
+    module Configurable
+      def self.included(base)
+        base.extend ClassMethods
+      end
+
+      module ClassMethods
+        def inherited(base)
+          raise "You cannot inherit from a Rails::Application child"
+        end
+      end
+
+      def config
+        @config ||= Application::Configuration.new(self.class.find_root_with_flag("config.ru", Dir.pwd))
+      end
+    end
+  end
+end
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