[Internal] Add route for widget testing (#199)

spec/controllers/widget_tests_controller_spec.rb

@@ -0,0 +1,12 @@
+require 'rails_helper'
+
+describe WidgetTestsController, type: :controller do
+  let(:channel_widget) { create(:channel_widget) }
+
+  describe '#index' do
+    it 'renders the page correctly' do
+      get :index
+      expect(response.status).to eq 200
+    end
+  end
+end