create fabulous quiz entry point

closes CNVS-9394

test plan:
  - visit quiz index
  - verify current quiz system displayed
  - enable fabulous quizzes
  - visit quiz index
  - verify ember / fabulous quizzes skeleton displays

Change-Id: Ie0737328b9aaa7bb2f97dc78647107b4ff9a7be2
Reviewed-on: https://gerrit.instructure.com/26204
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Stanley Stuart <stanley@instructure.com>
QA-Review: Myller de Araujo <myller@instructure.com>
Product-Review: Jason Madsen <jmadsen@instructure.com>

app/controllers/quizzes_controller.rb

@@ -33,6 +33,9 @@ class QuizzesController < ApplicationController
 
   def index
     if authorized_action(@context, @current_user, :read)
+      if @context.root_account.enable_fabulous_quizzes?
+        redirect_to fabulous_quizzes_course_quizzes_path
+      end
       return unless tab_enabled?(@context.class::TAB_QUIZZES)
       @quizzes = @context.quizzes.active.include_assignment.sort_by{|q| [(q.assignment ? q.assignment.due_at : q.lock_at) || SortLast, Canvas::ICU.collation_key(q.title || SortFirst)]}
 
@@ -82,6 +85,12 @@ class QuizzesController < ApplicationController
     end
   end
 
+  def fabulous_quizzes
+    if !@context.root_account.enable_fabulous_quizzes? || !authorized_action(@context, @current_user, :read)
+      redirect_to course_quizzes_path
+    end
+  end
+
   def show
     if @quiz.deleted?
       flash[:error] = t('errors.quiz_deleted', "That quiz has been deleted")

app/views/quizzes/fabulous_quizzes.html.erb

@@ -0,0 +1 @@
+<h2>Fabulous Ember Quizzes</h2>

config/routes.rb

@@ -317,6 +317,9 @@ FakeRails3Routes.draw do
       match 'statistics' => 'quizzes#statistics', :as => :statistics
       match 'read_only' => 'quizzes#read_only', :as => :read_only
       match 'filters' => 'quizzes#filters', :as => :filters
+      collection do
+        get :fabulous_quizzes
+      end
       resources :quiz_submissions, :path => :submissions do
         collection do
           put :backup

spec/controllers/quizzes_controller_spec.rb

@@ -129,6 +129,66 @@ describe QuizzesController do
     end
   end
 
+  describe "GET 'index' without fabulous quizzes enabled" do
+    before :each do
+      a = Account.default
+      a.disable_fabulous_quizzes!
+      a.save!
+    end
+
+    after :each do
+      a = Account.default
+      a.enable_fabulous_quizzes!
+      a.save!
+    end
+
+    it "should not redirect" do
+      course_with_teacher_logged_in(:active_all => true)
+      course_quiz(active = true)
+      a = Account.default
+      a.enable_fabulous_quizzes?.should eql false
+      get 'index', :course_id => @course.id
+      assert_response(:success)
+    end
+  end
+
+  describe "GET 'index' with fabulous quizzes enabled" do
+    before :each do
+      a = Account.default
+      a.enable_fabulous_quizzes!
+      a.save!
+    end
+
+    after :each do
+      a = Account.default
+      a.disable_fabulous_quizzes!
+      a.save!
+    end
+
+    it "should redirect to fabulous quizzes app" do
+      course_with_teacher_logged_in(:active_all => true)
+      course_quiz(active = true)
+      a = Account.default
+      a.enable_fabulous_quizzes?.should eql true
+      get 'index', :course_id => @course.id
+      assert_redirected_to(:controller => "quizzes", :action => "fabulous_quizzes")
+    end
+  end
+
+  describe "GET 'fabulous_quizzes' without fabulous quizzes enabled" do
+    it "should redirect to index" do
+      a = Account.default
+      a.disable_fabulous_quizzes!
+      a.save!
+      course_with_teacher_logged_in(:active_all => true)
+      course_quiz(active = true)
+      a = Account.default
+      a.enable_fabulous_quizzes?.should eql false
+      get 'fabulous_quizzes', :course_id => @course.id
+      assert_redirected_to(:controller => "quizzes", :action => "index")
+    end
+  end
+
   describe "GET 'new'" do
     it "should require authorization" do
       course_with_teacher(:active_all => true)