Inventory sales backorder functionality

app/code/Magento/InventoryApi/Test/_files/products.php

@@ -14,6 +14,7 @@
 $productFactory = $objectManager->get(ProductInterfaceFactory::class);
 /** @var ProductRepositoryInterface $productRepository */
 $productRepository = $objectManager->get(ProductRepositoryInterface::class);
+$productRepository->cleanCache();
 
 for ($i = 1; $i <= 3; $i++) {
  $product = $productFactory->create();

app/code/Magento/InventorySales/Plugin/Model/BackorderStockStatusPlugin.php

@@ -0,0 +1,75 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\InventorySales\Plugin\Model;
+
+use Magento\CatalogInventory\Model\Stock\Item;
+use Magento\InventoryApi\Api\IsProductInStockInterface;
+use Magento\CatalogInventory\Model\Stock\StockItemRepository;
+use Magento\CatalogInventory\Api\StockItemCriteriaInterfaceFactory;
+use Magento\Catalog\Model\ProductRepository;
+
+class BackorderStockStatusPlugin
+{
+ /**
+ * @var StockItemRepository
+ */
+ private $stockItemRepository;
+
+ /**
+ * @var StockItemCriteriaInterfaceFactory
+ */
+ private $stockItemCriteriaFactory;
+
+ /**
+ * @var ProductRepository
+ */
+ private $productRepository;
+
+ public function __construct(
+ StockItemRepository $stockItemRepository,
+ StockItemCriteriaInterfaceFactory $stockItemCriteriaFactory,
+ ProductRepository $productRepository
+ ) {
+ $this->stockItemRepository = $stockItemRepository;
+ $this->stockItemCriteriaFactory = $stockItemCriteriaFactory;
+ $this->productRepository = $productRepository;
+ }
+
+ /**
+ * Return true status if backorders is enabled for the item
+ *
+ * @param IsProductInStockInterface $subject
+ * @param callable $proceed
+ * @param string $sku
+ * @param int $stockId
+ * @return bool
+ * @SuppressWarnings(PHPMD.UnusedFormalParameter)
+ */
+ public function aroundExecute(
+ IsProductInStockInterface $subject,
+ callable $proceed,
+ string $sku,
+ int $stockId
+ ): bool {
+ $productData = $this->productRepository->get($sku);
+ $productId = $productData->getId();
+
+ $stockItemCriteria = $this->stockItemCriteriaFactory->create();
+ $stockItemCriteria->setProductsFilter($productId);
+ $stockItemsCollection = $this->stockItemRepository->getList($stockItemCriteria);
+
+ /** @var Item $stockItem */
+ $stockItem = current($stockItemsCollection->getItems());
+
+ if ($stockItem->getData('backorders') > 0) {
+ return true;
+ }
+
+ return $proceed($sku, $stockId);
+ }
+}

app/code/Magento/InventorySales/Test/Integration/Stock/IsBackorderedProductInStockTest.php

@@ -0,0 +1,154 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+namespace Magento\InventorySales\Test\Integration\Stock;
+
+use Magento\Catalog\Api\Data\ProductInterface;
+use Magento\Catalog\Api\ProductRepositoryInterface;
+use Magento\Catalog\Model\ProductRepository;
+use Magento\CatalogInventory\Api\Data\StockItemInterface;
+use Magento\CatalogInventory\Api\StockItemCriteriaInterfaceFactory;
+use Magento\CatalogInventory\Api\StockItemRepositoryInterface;
+use Magento\Framework\Api\SearchCriteriaBuilder;
+use Magento\Framework\Api\SearchCriteriaInterface;
+use Magento\Framework\Indexer\IndexerInterface;
+use Magento\Inventory\Indexer\StockItemIndexerInterface;
+use Magento\InventoryApi\Api\Data\SourceItemInterface;
+use Magento\InventoryApi\Api\GetProductQuantityInStockInterface;
+use Magento\InventoryApi\Api\IsProductInStockInterface;
+use Magento\InventoryApi\Api\SourceItemRepositoryInterface;
+use Magento\InventoryApi\Api\SourceItemsSaveInterface;
+use Magento\TestFramework\Helper\Bootstrap;
+use PHPUnit\Framework\TestCase;
+
+class IsBackorderedProductInStockTest extends TestCase
+{
+ const PRODUCT_SKU = 'SKU-2';
+
+ /**
+ * @var SourceItemRepositoryInterface
+ */
+ private $sourceItemRepository;
+
+ /**
+ * @var SearchCriteriaBuilder
+ */
+ private $searchCriteriaBuilder;
+
+ /**
+ * @var SourceItemsSaveInterface
+ */
+ private $sourceItemsSaveInterface;
+
+ /**
+ * @var IndexerInterface
+ */
+ private $indexer;
+
+ /**
+ * @var ProductRepository
+ */
+ private $productRepository;
+
+ /**
+ * @var GetProductQuantityInStockInterface
+ */
+ private $isProductInStock;
+
+ /**
+ * @var StockItemRepositoryInterface
+ */
+ private $stockItemRepository;
+
+ /**
+ * @var StockItemCriteriaInterfaceFactory
+ */
+ protected $stockItemCriteriaInterfaceFactory;
+
+ protected function setUp()
+ {
+ $this->productRepository = Bootstrap::getObjectManager()->create(ProductRepositoryInterface::class);
+ $this->stockItemRepository = Bootstrap::getObjectManager()->create(StockItemRepositoryInterface::class);
+ $this->stockItemCriteriaInterfaceFactory = Bootstrap::getObjectManager()->create(
+ StockItemCriteriaInterfaceFactory::class
+ );
+ $this->sourceItemRepository = Bootstrap::getObjectManager()->create(SourceItemRepositoryInterface::class);
+ $this->searchCriteriaBuilder = Bootstrap::getObjectManager()->create(SearchCriteriaBuilder::class);
+ $this->sourceItemsSaveInterface = Bootstrap::getObjectManager()->create(SourceItemsSaveInterface::class);
+ $this->indexer = Bootstrap::getObjectManager()->create(IndexerInterface::class);
+ $this->indexer->load(StockItemIndexerInterface::INDEXER_ID);
+ $this->isProductInStock = Bootstrap::getObjectManager()->create(
+ IsProductInStockInterface::class
+ );
+ }
+
+ /**
+ * @magentoDataFixture ../../../../app/code/Magento/InventoryApi/Test/_files/products.php
+ * @magentoDataFixture ../../../../app/code/Magento/InventoryApi/Test/_files/sources.php
+ * @magentoDataFixture ../../../../app/code/Magento/InventoryApi/Test/_files/stocks.php
+ * @magentoDataFixture ../../../../app/code/Magento/InventoryApi/Test/_files/source_items.php
+ * @magentoDataFixture ../../../../app/code/Magento/InventoryApi/Test/_files/stock_source_link.php
+ * @magentoDbIsolation disabled
+ */
+ public function testBackorderedZeroQtyProductIsInStock()
+ {
+ /** @var ProductInterface $product */
+ $product = $this->productRepository->get(self::PRODUCT_SKU);
+ $stockItemSearchCriteria = $this->stockItemCriteriaInterfaceFactory->create();
+ $stockItemSearchCriteria->setProductsFilter($product->getId());
+ $stockItemsCollection = $this->stockItemRepository->getList($stockItemSearchCriteria);
+
+ /** @var StockItemInterface $stockItem */
+ $stockItem = current($stockItemsCollection->getItems());
+ $stockItem->setBackorders(1);
+ $this->stockItemRepository->save($stockItem);
+
+ $sourceItem = $this->getSourceItemBySKU(self::PRODUCT_SKU);
+ $this->changeSourceItemQty($sourceItem, -15);
+
+ $this->assertTrue($this->isProductInStock->execute(self::PRODUCT_SKU, 1));
+ }
+
+ /**
+ * @magentoDbIsolation disabled
+ * @magentoDataFixture ../../../../app/code/Magento/InventoryApi/Test/_files/products.php
+ * @magentoDataFixture ../../../../app/code/Magento/InventoryApi/Test/_files/sources.php
+ * @magentoDataFixture ../../../../app/code/Magento/InventoryApi/Test/_files/stocks.php
+ * @magentoDataFixture ../../../../app/code/Magento/InventoryApi/Test/_files/source_items.php
+ * @magentoDataFixture ../../../../app/code/Magento/InventoryApi/Test/_files/stock_source_link.php
+ */
+ public function testZeroQtyProductIsOutOfStock()
+ {
+ $sourceItem = $this->getSourceItemBySKU(self::PRODUCT_SKU);
+ $this->changeSourceItemQty($sourceItem, 0);
+
+ $this->assertFalse($this->isProductInStock->execute(self::PRODUCT_SKU, 1));
+ }
+
+ /**
+ * @param string $sku
+ * @return SourceItemInterface
+ */
+ private function getSourceItemBySKU(string $sku)
+ {
+ /** @var SearchCriteriaInterface $sourceItemSearchCriteria */
+ $sourceItemSearchCriteria = $this->searchCriteriaBuilder->addFilter('sku', $sku)->create();
+ $sourceItemSearchResult = $this->sourceItemRepository->getList($sourceItemSearchCriteria);
+
+ /** @var SourceItemInterface $sourceItem */
+ return current($sourceItemSearchResult->getItems());
+ }
+
+ /**
+ * @param SourceItemInterface $sourceItem
+ * @param $qty
+ */
+ private function changeSourceItemQty(SourceItemInterface $sourceItem, $qty)
+ {
+ $sourceItem->setQuantity($qty);
+ $this->sourceItemsSaveInterface->execute([$sourceItem]);
+ $this->indexer->reindexRow(5);
+ }
+}

app/code/Magento/InventorySales/etc/di.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0"?>
+<!--
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+-->
+<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
+ <type name="Magento\InventoryApi\Api\IsProductInStockInterface">
+ <plugin name="backorderInventoryStockStatus" type="Magento\InventorySales\Plugin\Model\BackorderStockStatusPlugin"/>
+ </type>
+</config>