Allow Rack::Runtime to be deleted from middleware stack.

Fixes: https://github.com/rails/rails/issues/16433.

1 files changed, 16 insertions, 0 deletions

diff --git a/railties/test/application/middleware_test.rb b/railties/test/application/middleware_test.rb
index c64fe082f3..04bd19784a 100644
--- a/railties/test/application/middleware_test.rb
+++ b/railties/test/application/middleware_test.rb
@@ -125,6 +125,22 @@ module ApplicationTests
       assert !middleware.include?("ActionDispatch::Static")
     end
 
+    test "can delete a middleware from the stack even if insert_before is added after delete" do
+      add_to_config "config.middleware.delete Rack::Runtime"
+      add_to_config "config.middleware.insert_before(Rack::Runtime, Rack::Config)"
+      boot!
+      assert middleware.include?("Rack::Config")
+      assert_not middleware.include?("Rack::Runtime")
+    end
+
+    test "can delete a middleware from the stack even if insert_after is added after delete" do
+      add_to_config "config.middleware.delete Rack::Runtime"
+      add_to_config "config.middleware.insert_after(Rack::Runtime, Rack::Config)"
+      boot!
+      assert middleware.include?("Rack::Config")
+      assert_not middleware.include?("Rack::Runtime")
+    end
+
     test "includes exceptions middlewares even if action_dispatch.show_exceptions is disabled" do
       add_to_config "config.action_dispatch.show_exceptions = false"
       boot!