adding spec for implicit rendering of custom actions

suggested by #303

Author: fiedl

spec/matestack/ui/core/renderer_spec.rb

@@ -94,5 +94,51 @@ def response
       end
     end
 
+    describe "implicit rendering for custom actions", type: :feature, js: true do
+      before do
+        module Clients
+        end
+
+        class Clients::BookingsController < ApplicationController
+          include Matestack::Ui::Core::ApplicationHelper
+
+          def step1
+          end
+        end
+
+        Rails.application.routes.draw do
+          namespace :clients do
+            get 'bookings/step1', to: 'bookings#step1'
+          end
+        end
+
+        class Apps::Clients < Matestack::Ui::App
+          def response
+            components {
+              page_content
+            }
+          end
+        end
+
+        module Pages::Clients
+        end
+
+        class Pages::Clients::Bookings::Step1 < Matestack::Ui::Page
+          def response
+            components {
+              plain "Hello from the Pages::Clients::Bookings::Step1 page."
+            }
+          end
+        end
+      end
+      after do
+        Rails.application.reload_routes!
+      end
+      specify do
+        visit "/clients/bookings/step1"
+        expect(page).to have_text "Hello from the Pages::Clients::Bookings::Step1 page."
+      end
+    end
+
   end
 end