Cover changes with Unit test

Author: Nazar65

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

@@ -0,0 +1,119 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\Wishlist\Test\Unit\Controller\Index;
+
+use Magento\Backend\Model\View\Result\Redirect;
+use Magento\Framework\App\Action\Context;
+use Magento\Framework\App\RequestInterface;
+use Magento\Framework\Controller\ResultFactory;
+use Magento\Framework\Data\Form\FormKey\Validator;
+use Magento\Wishlist\Controller\Index\Update;
+use Magento\Wishlist\Controller\WishlistProviderInterface;
+use Magento\Wishlist\Model\LocaleQuantityProcessor;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * Test for upate controller wishlist
+ */
+class UpdateTest extends TestCase
+{
+    /**
+     * @var Validator $formKeyValidator
+     */
+    private $formKeyValidator;
+
+    /**
+     * @var WishlistProviderInterface $wishlistProvider
+     */
+    private $wishlistProvider;
+
+    /**
+     * @var LocaleQuantityProcessor $quantityProcessor
+     */
+    private $quantityProcessor;
+
+    /**
+     * @var Update $updateController
+     */
+    private $updateController;
+
+    /**
+     * @var $context
+     */
+    private $context;
+
+    /**
+     * @var Redirect $resultRedirect
+     */
+    private $resultRedirect;
+
+    /**
+     * @var ResultFactory $resultFatory
+     */
+    private $resultFactory;
+
+    /**
+     * @var RequestInterface $requestMock
+     */
+    private $requestMock;
+
+    /**
+     * @inheritdoc
+     */
+    protected function setUp()
+    {
+        $this->formKeyValidator = $this->createMock(Validator::class);
+        $this->wishlistProvider = $this->createMock(WishlistProviderInterface::class);
+        $this->quantityProcessor = $this->createMock(LocaleQuantityProcessor::class);
+        $this->context = $this->createMock(Context::class);
+        $this->resultRedirect = $this->createMock(Redirect::class);
+        $this->resultFactory = $this->createPartialMock(ResultFactory::class, ['create']);
+        $this->requestMock = $this->getMockBuilder(RequestInterface::class)
+            ->setMethods(['getPostValue'])
+            ->getMockForAbstractClass();
+
+        $this->context->expects($this->once())
+                      ->method('getResultFactory')
+                      ->willReturn($this->resultFactory);
+
+        $this->resultFactory->expects($this->any())
+                              ->method('create')
+                              ->willReturn($this->resultRedirect);
+        $this->context->expects($this->any())
+            ->method('getRequest')
+            ->willReturn($this->requestMock);
+
+        $this->updateController = new Update(
+            $this->context,
+            $this->formKeyValidator,
+            $this->wishlistProvider,
+            $this->quantityProcessor
+        );
+    }
+
+    /**
+     * Test for update method Wishlist controller.
+     *
+     * Check if there is not post value result redirect returned.
+     *
+     * @return void
+     */
+    public function testUpdate(): void
+    {
+        $this->formKeyValidator->expects($this->once())
+                               ->method('validate')
+                               ->willReturn(true);
+
+        $wishlist = $this->createMock(\Magento\Wishlist\Model\Wishlist::class);
+        $this->wishlistProvider->expects($this->once())
+            ->method('getWishlist')
+            ->willReturn($wishlist);
+        $this->requestMock->expects($this->once())
+            ->method('getPostValue')
+            ->willReturn(null);
+        $this->assertEquals($this->resultRedirect, $this->updateController->execute());
+    }
+}