[Backport] [Wishlist] Covering the Wishlist classes by integration and unit tests

app/code/Magento/Wishlist/Test/Unit/Model/Product/AttributeValueProviderTest.php

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+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\Wishlist\Test\Unit\Model\Product;
+
+use Magento\Catalog\Model\Product;
+use Magento\Catalog\Model\ResourceModel\Product\Collection;
+use Magento\Catalog\Model\ResourceModel\Product\CollectionFactory;
+use Magento\Framework\DB\Adapter\AdapterInterface;
+use Magento\Wishlist\Model\Product\AttributeValueProvider;
+use PHPUnit\Framework\TestCase;
+use PHPUnit_Framework_MockObject_MockObject;
+
+/**
+ * AttributeValueProviderTest
+ */
+class AttributeValueProviderTest extends TestCase
+{
+    /**
+     * @var AttributeValueProvider|PHPUnit_Framework_MockObject_MockObject
+     */
+    private $attributeValueProvider;
+
+    /**
+     * @var CollectionFactory|PHPUnit_Framework_MockObject_MockObject
+     */
+    private $productCollectionFactoryMock;
+
+    /**
+     * @var Product|PHPUnit_Framework_MockObject_MockObject
+     */
+    private $productMock;
+
+    /**
+     * @var AdapterInterface|PHPUnit_Framework_MockObject_MockObject
+     */
+    private $connectionMock;
+
+    /**
+     * Set Up
+     *
+     * @return void
+     */
+    protected function setUp()
+    {
+        $this->productCollectionFactoryMock = $this->createPartialMock(
+            CollectionFactory::class,
+            ['create']
+        );
+        $this->attributeValueProvider = new AttributeValueProvider(
+            $this->productCollectionFactoryMock
+        );
+    }
+
+    /**
+     * Get attribute text when the flat table is disabled
+     *
+     * @param int $productId
+     * @param string $attributeCode
+     * @param string $attributeText
+     * @return void
+     * @dataProvider attributeDataProvider
+     */
+    public function testGetAttributeTextWhenFlatIsDisabled(int $productId, string $attributeCode, string $attributeText)
+    {
+        $this->productMock = $this->getMockBuilder(Product::class)
+            ->disableOriginalConstructor()
+            ->setMethods(['getData'])
+            ->getMock();
+
+        $this->productMock->expects($this->any())
+            ->method('getData')
+            ->with($attributeCode)
+            ->willReturn($attributeText);
+
+        $productCollection = $this->getMockBuilder(Collection::class)
+            ->disableOriginalConstructor()
+            ->setMethods([
+                'addIdFilter', 'addStoreFilter', 'addAttributeToSelect', 'isEnabledFlat', 'getFirstItem'
+            ])->getMock();
+
+        $productCollection->expects($this->any())
+            ->method('addIdFilter')
+            ->willReturnSelf();
+        $productCollection->expects($this->any())
+            ->method('addStoreFilter')
+            ->willReturnSelf();
+        $productCollection->expects($this->any())
+            ->method('addAttributeToSelect')
+            ->willReturnSelf();
+        $productCollection->expects($this->any())
+            ->method('isEnabledFlat')
+            ->willReturn(false);
+        $productCollection->expects($this->any())
+            ->method('getFirstItem')
+            ->willReturn($this->productMock);
+
+        $this->productCollectionFactoryMock->expects($this->atLeastOnce())
+            ->method('create')
+            ->willReturn($productCollection);
+
+        $actual = $this->attributeValueProvider->getRawAttributeValue($productId, $attributeCode);
+
+        $this->assertEquals($attributeText, $actual);
+    }
+
+    /**
+     * Get attribute text when the flat table is enabled
+     *
+     * @dataProvider attributeDataProvider
+     * @param int $productId
+     * @param string $attributeCode
+     * @param string $attributeText
+     * @return void
+     */
+    public function testGetAttributeTextWhenFlatIsEnabled(int $productId, string $attributeCode, string $attributeText)
+    {
+        $this->connectionMock = $this->getMockBuilder(AdapterInterface::class)->getMockForAbstractClass();
+        $this->connectionMock->expects($this->any())
+            ->method('fetchRow')
+            ->willReturn([
+                $attributeCode => $attributeText
+            ]);
+        $this->productMock = $this->getMockBuilder(Product::class)
+            ->disableOriginalConstructor()
+            ->setMethods(['getData'])
+            ->getMock();
+        $this->productMock->expects($this->any())
+            ->method('getData')
+            ->with($attributeCode)
+            ->willReturn($attributeText);
+
+        $productCollection = $this->getMockBuilder(Collection::class)
+            ->disableOriginalConstructor()
+            ->setMethods([
+                'addIdFilter', 'addStoreFilter', 'addAttributeToSelect', 'isEnabledFlat', 'getConnection'
+            ])->getMock();
+
+        $productCollection->expects($this->any())
+            ->method('addIdFilter')
+            ->willReturnSelf();
+        $productCollection->expects($this->any())
+            ->method('addStoreFilter')
+            ->willReturnSelf();
+        $productCollection->expects($this->any())
+            ->method('addAttributeToSelect')
+            ->willReturnSelf();
+        $productCollection->expects($this->any())
+            ->method('isEnabledFlat')
+            ->willReturn(true);
+        $productCollection->expects($this->any())
+            ->method('getConnection')
+            ->willReturn($this->connectionMock);
+
+        $this->productCollectionFactoryMock->expects($this->atLeastOnce())
+            ->method('create')
+            ->willReturn($productCollection);
+
+        $actual = $this->attributeValueProvider->getRawAttributeValue($productId, $attributeCode);
+
+        $this->assertEquals($attributeText, $actual);
+    }
+
+    /**
+     * @return array
+     */
+    public function attributeDataProvider(): array
+    {
+        return [
+            [1, 'attribute_code', 'Attribute Text']
+        ];
+    }
+}

dev/tests/integration/testsuite/Magento/Wishlist/Controller/ShareTest.php

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+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\Wishlist\Controller;
+
+use Magento\Customer\Model\Session;
+use Magento\Framework\App\Area;
+use Magento\Framework\Data\Form\FormKey;
+use Magento\Framework\Message\MessageInterface;
+use Magento\TestFramework\Helper\Bootstrap;
+use Magento\TestFramework\Request;
+use Magento\TestFramework\TestCase\AbstractController;
+
+/**
+ * @magentoAppIsolation enabled
+ */
+class ShareTest extends AbstractController
+{
+    /**
+     * Test share wishlist with correct data
+     *
+     * @magentoDataFixture Magento/Wishlist/_files/wishlist.php
+     */
+    public function testSuccessfullyShareWishlist()
+    {
+        $this->login(1);
+        $this->prepareRequestData();
+        $this->dispatch('wishlist/index/send/');
+
+        $this->assertSessionMessages(
+            $this->equalTo(['Your wish list has been shared.']),
+            MessageInterface::TYPE_SUCCESS
+        );
+    }
+
+    /**
+     * Test share wishlist with incorrect data
+     *
+     * @magentoDataFixture Magento/Wishlist/_files/wishlist.php
+     */
+    public function testShareWishlistWithoutEmails()
+    {
+        $this->login(1);
+        $this->prepareRequestData(true);
+        $this->dispatch('wishlist/index/send/');
+
+        $this->assertSessionMessages(
+            $this->equalTo(['Please enter an email address.']),
+            MessageInterface::TYPE_ERROR
+        );
+    }
+
+    /**
+     * Login the user
+     *
+     * @param string $customerId Customer to mark as logged in for the session
+     * @return void
+     */
+    protected function login($customerId)
+    {
+        /** @var Session $session */
+        $session = $this->_objectManager->get(Session::class);
+        $session->loginById($customerId);
+    }
+
+    /**
+     * Prepares the request with data
+     *
+     * @param bool $invalidData
+     * @return void
+     */
+    private function prepareRequestData($invalidData = false)
+    {
+        Bootstrap::getInstance()->loadArea(Area::AREA_FRONTEND);
+        $emails = !$invalidData ? 'email-1@example.com,email-2@example.com' : '';
+
+        /** @var FormKey $formKey */
+        $formKey = $this->_objectManager->get(FormKey::class);
+        $post = [
+            'emails' => $emails,
+            'message' => '',
+            'form_key' => $formKey->getFormKey(),
+        ];
+
+        $this->getRequest()->setMethod(Request::METHOD_POST);
+        $this->getRequest()->setPostValue($post);
+    }
+}