Add tests to the page rendering feature

Author: marcosvafilho

spec/test/base/core/page/rendering_spec.rb

@@ -6,12 +6,41 @@
   before :all do
     Rails.application.routes.append do
       scope "page_rendering_components_spec" do
-        get '/page_test', to: 'page_test#my_action', as: 'rendering_page_test_action'
+        get '/page_rendering_test', to: 'page_rendering_test#my_action'
       end
     end
     Rails.application.reload_routes!
+
+    class ExamplePageRendering < Matestack::Ui::Page
+      def response
+        div do
+          plain "ExamplePage"
+        end
+      end
+    end
+
+    class PageRenderingTestController < ActionController::Base
+      include Matestack::Ui::Core::Helper
+
+      def my_action
+        render ExamplePageRendering
+      end
+    end
   end
 
-  it "wraps page content with a specific dom structure"
+  before :each do
+    visit "page_rendering_components_spec/page_rendering_test"
+  end
+
+  it "wraps content with a specific dom structure" do
+    expect(page).to have_xpath('//div[@id="matestack-ui"]/div[@class="matestack-page-container"]/div[@class="matestack-page-wrapper"]')
+  end
 
+  it "renders its root element with a dynamic id composed of {controller} and {action}" do
+    expect(page).to have_xpath('//div[@id="matestack-page-page-rendering-test-my-action"]')
+  end
+
+  it "renders its root element with a specific class" do
+    expect(page).to have_xpath('//div[@class="matestack-page-root"]')
+  end
 end