MAGETWO-36101: Refactor controllers in the Wishlist module

Author: Yuri Kovsher

app/code/Magento/Wishlist/Controller/Index/Index.php

@@ -42,6 +42,7 @@ public function execute()
         }
         /** @var \Magento\Framework\View\Result\Page resultPage */
         $resultPage = $this->resultFactory->create(ResultFactory::TYPE_PAGE);
+        $resultPage->getLayout()->initMessages();
         return $resultPage;
     }
 }

app/code/Magento/Wishlist/Controller/Index/Share.php

@@ -20,6 +20,7 @@ public function execute()
     {
         /** @var \Magento\Framework\View\Result\Page $resultPage */
         $resultPage = $this->resultFactory->create(ResultFactory::TYPE_PAGE);
+        $resultPage->getLayout()->initMessages();
         return $resultPage;
     }
 }

app/code/Magento/Wishlist/Controller/Shared/Index.php

@@ -68,6 +68,7 @@ public function execute()
         $this->registry->register('shared_wishlist', $wishlist);
         /** @var \Magento\Framework\View\Result\Page $resultPage */
         $resultPage = $this->resultFactory->create(ResultFactory::TYPE_PAGE);
+        $resultPage->getLayout()->initMessages();
         return $resultPage;
     }
 }

app/code/Magento/Wishlist/Test/Unit/Controller/Index/IndexTest.php

@@ -44,6 +44,11 @@ class IndexTest extends \PHPUnit_Framework_TestCase
      */
     protected $resultPageMock;
 
+    /**
+     * @var \Magento\Framework\View\Layout
+     */
+    protected $layoutMock;
+
     protected function setUp()
     {
         $this->context = $this->getMock('Magento\Framework\App\Action\Context', [], [], '', false);
@@ -57,11 +62,17 @@ protected function setUp()
         $this->resultPageMock = $this->getMockBuilder('Magento\Framework\View\Result\Page')
             ->disableOriginalConstructor()
             ->getMock();
+        $this->layoutMock = $this->getMockBuilder('Magento\Framework\View\Layout')
+            ->disableOriginalConstructor()
+            ->getMock();
 
         $this->resultFactoryMock->expects($this->any())
             ->method('create')
             ->with(ResultFactory::TYPE_PAGE, [])
             ->willReturn($this->resultPageMock);
+        $this->resultPageMock->expects($this->any())
+            ->method('getLayout')
+            ->willReturn($this->layoutMock);
     }
 
     protected function prepareContext()