ENGCOM-5789: Added UpdateDownloadableCartItemsTest with testUpdateDow…

…nloadableCart… #872

 - Merge Pull Request magento/graphql-ce#872 from Rus0/graphql-ce:ISSUE-824
 - Merged commits:
   1. e20be33

dev/tests/api-functional/testsuite/Magento/GraphQl/DownloadableProduct/UpdateDownloadableCartItemsTest.php

@@ -0,0 +1,202 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\GraphQl\DownloadableProduct;
+
+use Magento\Catalog\Api\ProductRepositoryInterface;
+use Magento\Catalog\Model\Product;
+use Magento\Framework\ObjectManager\ObjectManager;
+use Magento\GraphQl\Quote\GetMaskedQuoteIdByReservedOrderId;
+use Magento\GraphQl\Quote\GetQuoteItemIdByReservedQuoteIdAndSku;
+use Magento\Quote\Model\Quote;
+use Magento\Quote\Model\Quote\Item;
+use Magento\Quote\Model\QuoteFactory;
+use Magento\Quote\Model\ResourceModel\Quote as QuoteResource;
+use Magento\TestFramework\Helper\Bootstrap;
+use Magento\TestFramework\TestCase\GraphQlAbstract;
+
+/**
+ * Test cases for adding downloadable product to cart.
+ */
+class UpdateDownloadableCartItemsTest extends GraphQlAbstract
+{
+    /**
+     * @var GetMaskedQuoteIdByReservedOrderId
+     */
+    private $getMaskedQuoteIdByReservedOrderId;
+
+    /**
+     * @var ObjectManager
+     */
+    private $objectManager;
+
+    /**
+     * @var GetQuoteItemIdByReservedQuoteIdAndSku
+     */
+    private $getQuoteItemIdByReservedQuoteIdAndSku;
+
+    /**
+     * @var QuoteFactory
+     */
+    private $quoteFactory;
+
+    /**
+     * @var ProductRepositoryInterface
+     */
+    private $productRepository;
+
+    /**
+     * @var QuoteResource
+     */
+    private $quoteResource;
+
+    /**
+     * @inheritdoc
+     */
+    protected function setUp()
+    {
+        $this->objectManager = Bootstrap::getObjectManager();
+        $this->getMaskedQuoteIdByReservedOrderId = $this->objectManager->get(GetMaskedQuoteIdByReservedOrderId::class);
+        $this->quoteFactory = $this->objectManager->get(QuoteFactory::class);
+        $this->productRepository = $this->objectManager->get(ProductRepositoryInterface::class);
+        $this->quoteResource = $this->objectManager->get(QuoteResource::class);
+        $this->getQuoteItemIdByReservedQuoteIdAndSku = $this->objectManager->get(
+            GetQuoteItemIdByReservedQuoteIdAndSku::class
+        );
+    }
+
+    /**
+     * Update a downloadable product into shopping cart when "Links can be purchased separately" is enabled
+     *
+     * @magentoApiDataFixture Magento/Checkout/_files/active_quote_with_downloadable_product.php
+     */
+    public function testUpdateDownloadableCartItemQuantity()
+    {
+        $maskedQuoteId = $this->getMaskedQuoteIdByReservedOrderId->execute('test_order_1');
+        $sku = 'downloadable-product';
+        $qty = 1;
+        $finalQty = $qty + 1;
+        $links = $this->getProductsLinks($sku);
+        $linkId = key($links);
+
+        $query = <<<MUTATION
+mutation {
+    addDownloadableProductsToCart(
+        input: {
+            cart_id: "{$maskedQuoteId}",
+            cart_items: [
+                {
+                    data: {
+                        quantity: {$qty},
+                        sku: "{$sku}"
+                    },
+                    downloadable_product_links: [
+                        {
+          	                link_id: {$linkId}
+                        }
+                    ]
+                }
+            ]
+        }
+    ) {
+        cart {
+            items {
+                product {
+                    sku
+                }
+                quantity
+            }
+        }
+    }
+}
+MUTATION;
+        $response = $this->graphQlMutation($query);
+
+        self::assertArrayHasKey('items', $response['addDownloadableProductsToCart']['cart']);
+        self::assertCount(1, $response['addDownloadableProductsToCart']['cart']['items']);
+        self::assertEquals($finalQty, $response['addDownloadableProductsToCart']['cart']['items'][0]['quantity']);
+        self::assertEquals($sku, $response['addDownloadableProductsToCart']['cart']['items'][0]['product']['sku']);
+    }
+
+    /**
+     * Update a downloadable product into shopping cart when "Links can be purchased separately" is enabled
+     *
+     * @magentoApiDataFixture Magento/Checkout/_files/active_quote_with_downloadable_product.php
+     */
+    public function testRemoveCartItemIfQuantityIsZero()
+    {
+        $reservedOrderId = "test_order_1";
+        $sku = "downloadable-product";
+
+        $maskedQuoteId = $this->getMaskedQuoteIdByReservedOrderId->execute($reservedOrderId);
+
+        /** @var Quote $quote */
+        $quote = $this->quoteFactory->create();
+        $this->quoteResource->load($quote, $reservedOrderId, 'reserved_order_id');
+        $qty = 0;
+
+        $itemId = 0;
+        /** @var Item $item */
+        foreach ($quote->getAllItems() as $item) {
+            if ($item->getSku() == $sku) {
+                $itemId = $item->getId();
+            }
+        }
+
+        $query = <<<MUTATION
+mutation {
+  updateCartItems(input: {
+    cart_id: "{$maskedQuoteId}"
+    cart_items:[
+      {
+        cart_item_id: {$itemId}
+        quantity: {$qty}
+      }
+    ]
+  }) {
+    cart {
+      items {
+        id
+        quantity
+      }
+    }
+  }
+}
+MUTATION;
+        $response = $this->graphQlMutation($query);
+
+        self::assertArrayHasKey('updateCartItems', $response);
+        self::assertArrayHasKey('cart', $response['updateCartItems']);
+
+        $responseCart = $response['updateCartItems']['cart'];
+        self::assertCount(0, $responseCart['items']);
+    }
+
+    /**
+     * Function returns array of all product's links
+     *
+     * @param string $sku
+     * @return array
+     */
+    private function getProductsLinks(string $sku) : array
+    {
+        $result = [];
+        $productRepository = $this->objectManager->get(ProductRepositoryInterface::class);
+
+        $product = $productRepository->get($sku, false, null, true);
+
+        foreach ($product->getDownloadableLinks() as $linkObject) {
+            $result[$linkObject->getLinkId()] = [
+                'title' => $linkObject->getTitle(),
+                'link_type' => null, //deprecated field
+                'price' => $linkObject->getPrice(),
+            ];
+        }
+
+        return $result;
+    }
+}

dev/tests/integration/testsuite/Magento/Checkout/_files/active_quote_with_downloadable_product.php

@@ -0,0 +1,40 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+require __DIR__ . '/../../../Magento/Downloadable/_files/product_downloadable.php';
+require __DIR__ . '/active_quote.php';
+
+/** @var \Magento\Catalog\Api\ProductRepositoryInterface $productRepository */
+$productRepository = \Magento\TestFramework\Helper\Bootstrap::getObjectManager()
+    ->create(\Magento\Catalog\Api\ProductRepositoryInterface::class);
+/** @var $product \Magento\Catalog\Model\Product */
+$product = $productRepository->get('downloadable-product');
+
+/** @var $linkCollection \Magento\Downloadable\Model\ResourceModel\Link\Collection */
+$linkCollection = \Magento\TestFramework\Helper\Bootstrap::getObjectManager()->create(
+    \Magento\Downloadable\Model\Link::class
+)->getCollection()->addProductToFilter(
+    $product->getId()
+)->addTitleToResult(
+    $product->getStoreId()
+)->addPriceToResult(
+    $product->getStore()->getWebsiteId()
+);
+
+/** @var $link \Magento\Downloadable\Model\Link */
+$link = $linkCollection->getFirstItem();
+
+$requestInfo = new \Magento\Framework\DataObject(['qty' => 1, 'links' => [$link->getId()]]);
+
+/** @var $cart \Magento\Checkout\Model\Cart */
+$cart = \Magento\TestFramework\Helper\Bootstrap::getObjectManager()->create(\Magento\Checkout\Model\Cart::class);
+$cart->setQuote($quote);
+$cart->addProduct($product, $requestInfo);
+$cart->save();
+
+/** @var $objectManager \Magento\TestFramework\ObjectManager */
+$objectManager = \Magento\TestFramework\Helper\Bootstrap::getObjectManager();
+$objectManager->removeSharedInstance(\Magento\Checkout\Model\Session::class);

dev/tests/integration/testsuite/Magento/Checkout/_files/active_quote_with_downloadable_product_rollback.php

@@ -0,0 +1,8 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+
+require __DIR__ . '/active_quote_rollback.php';
+require __DIR__ . '/../../Downloadable/_files/product_downloadable_rollback.php';