1 files changed, 10 insertions, 0 deletions
diff --git a/railties/test/engine_test.rb b/railties/test/engine_test.rb
index 7970913d21..8401494bd2 100644
--- a/railties/test/engine_test.rb
+++ b/railties/test/engine_test.rb
@@ -11,4 +11,14 @@ class EngineTest < ActiveSupport::TestCase
 
     assert !engine.routes?
   end
+
+  def test_application_can_be_subclassed
+    klass = Class.new(Rails::Application) do
+      attr_reader :hello
+      def initialize
+        @hello = "world"
+      end
+    end
+    assert_equal "world", klass.instance.hello
+  end
 end