2 files changed, 30 insertions, 3 deletions
diff --git a/actionpack/test/dispatch/routing/non_dispatch_routed_app_test.rb b/actionpack/test/dispatch/routing/non_dispatch_routed_app_test.rb
new file mode 100644
index 0000000000..676a8c38d4
--- /dev/null
+++ b/actionpack/test/dispatch/routing/non_dispatch_routed_app_test.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+
+require "abstract_unit"
+
+module ActionDispatch
+  module Routing
+    class NonDispatchRoutedAppTest < ActionDispatch::IntegrationTest
+      # For example, Grape::API
+      class SimpleApp
+        def self.call(env)
+          [ 200, { "Content-Type" => "text/plain" }, [] ]
+        end
+
+        def self.routes
+          []
+        end
+      end
+
+      setup { @app = SimpleApp }
+
+      test "does not except" do
+        get "/foo"
+        assert_response :success
+      end
+    end
+  end
+end
diff --git a/actionpack/test/dispatch/routing/route_set_test.rb b/actionpack/test/dispatch/routing/route_set_test.rb
index e61d47b160..e6a2c35798 100644
--- a/actionpack/test/dispatch/routing/route_set_test.rb
+++ b/actionpack/test/dispatch/routing/route_set_test.rb
@@ -29,7 +29,7 @@ module ActionDispatch
         assert_not empty?
       end
 
-      test "url helpers are added when route is added" do
+      test "URL helpers are added when route is added" do
         draw do
           get "foo", to: SimpleApp.new("foo#index")
         end
@@ -48,7 +48,7 @@ module ActionDispatch
         assert_equal "/bar", url_helpers.bar_path
       end
 
-      test "url helpers are updated when route is updated" do
+      test "URL helpers are updated when route is updated" do
         draw do
           get "bar", to: SimpleApp.new("bar#index"), as: :bar
         end
@@ -62,7 +62,7 @@ module ActionDispatch
         assert_equal "/baz", url_helpers.bar_path
       end
 
-      test "url helpers are removed when route is removed" do
+      test "URL helpers are removed when route is removed" do
         draw do
           get "foo", to: SimpleApp.new("foo#index")
           get "bar", to: SimpleApp.new("bar#index")