1 files changed, 16 insertions, 0 deletions
diff --git a/railties/test/application/middleware/exceptions_test.rb b/railties/test/application/middleware/exceptions_test.rb
index cbb990f13b..2d659ade8d 100644
--- a/railties/test/application/middleware/exceptions_test.rb
+++ b/railties/test/application/middleware/exceptions_test.rb
@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 require "isolation/abstract_unit"
 require "rack/test"
 
@@ -100,6 +102,20 @@ module ApplicationTests
       end
     end
 
+    test "routing to a nonexistent controller when action_dispatch.show_exceptions and consider_all_requests_local are set shows diagnostics" do
+      app_file "config/routes.rb", <<-RUBY
+        Rails.application.routes.draw do
+          resources :articles
+        end
+      RUBY
+
+      app.config.action_dispatch.show_exceptions = true
+      app.config.consider_all_requests_local = true
+
+      get "/articles"
+      assert_match "<title>Action Controller: Exception caught</title>", last_response.body
+    end
+
     test "displays diagnostics message when exception raised in template that contains UTF-8" do
       controller :foo, <<-RUBY
         class FooController < ActionController::Base