1 files changed, 11 insertions, 0 deletions
diff --git a/actionpack/test/dispatch/debug_exceptions_test.rb b/actionpack/test/dispatch/debug_exceptions_test.rb
index 6ff651ad52..d236b14e02 100644
--- a/actionpack/test/dispatch/debug_exceptions_test.rb
+++ b/actionpack/test/dispatch/debug_exceptions_test.rb
@@ -37,6 +37,8 @@ class DebugExceptionsTest < ActionDispatch::IntegrationTest
         raise ActionView::Template::Error.new('template', AbstractController::ActionNotFound.new)
       when "/bad_request"
         raise ActionController::BadRequest
+      when "/missing_keys"
+        raise ActionController::UrlGenerationError, "No route matches"
       else
         raise "puke!"
       end
@@ -113,6 +115,15 @@ class DebugExceptionsTest < ActionDispatch::IntegrationTest
     assert_match(/AbstractController::ActionNotFound/, body)
   end
 
+  test "named urls missing keys raise 500 level error" do
+    @app = DevelopmentApp
+
+    get "/missing_keys", {}, {'action_dispatch.show_exceptions' => true}
+    assert_response 500
+
+    assert_match(/ActionController::UrlGenerationError/, body)
+  end
+
   test "show the controller name in the diagnostics template when controller name is present" do
     @app = DevelopmentApp
     get("/runtime_error", {}, {