1 files changed, 23 insertions, 1 deletions
diff --git a/actionpack/test/controller/live_stream_test.rb b/actionpack/test/controller/live_stream_test.rb
index 3ea02f0a19..1361e95081 100644
--- a/actionpack/test/controller/live_stream_test.rb
+++ b/actionpack/test/controller/live_stream_test.rb
@@ -150,6 +150,20 @@ module ActionController
         response.stream.close
       end
 
+      def write_sleep_autoload
+        path = File.join(File.dirname(__FILE__), "../fixtures")
+        ActiveSupport::Dependencies.autoload_paths << path
+
+        response.headers["Content-Type"] = "text/event-stream"
+        response.stream.write "before load"
+        sleep 0.01
+        ::LoadMe
+        response.stream.close
+        latch.count_down
+
+        ActiveSupport::Dependencies.autoload_paths.reject! { |p| p == path }
+      end
+
       def thread_locals
         tc.assert_equal "aaron", Thread.current[:setting]
 
@@ -271,7 +285,7 @@ module ActionController
 
     def test_set_cookie
       get :set_cookie
-      assert_equal({"hello" => "world"}, @response.cookies)
+      assert_equal({ "hello" => "world" }, @response.cookies)
       assert_equal "hello world", @response.body
     end
 
@@ -281,6 +295,14 @@ module ActionController
       assert_equal "text/event-stream", @response.headers["Content-Type"]
     end
 
+    def test_delayed_autoload_after_write_within_interlock_hook
+      # Simulate InterlockHook
+      ActiveSupport::Dependencies.interlock.start_running
+      res = get :write_sleep_autoload
+      res.each {}
+      ActiveSupport::Dependencies.interlock.done_running
+    end
+
     def test_async_stream
       rubinius_skip "https://github.com/rubinius/rubinius/issues/2934"