MAGETWO-87251: [Backport 2.3] #12936 out-of-stock options for configurable product visible as sellable #13417

 - Merge Pull Request magento/magento2#13417 from Coderimus/magento2:backport/stock-status-filter-fix-for-configurable-products
 - Merged commits:
   1. d9111b0

Author: adrian-martinez-interactiv4

app/code/Magento/CatalogInventory/Model/ResourceModel/Stock/Status.php

@@ -5,8 +5,8 @@
  */
 namespace Magento\CatalogInventory\Model\ResourceModel\Stock;
 
-use Magento\CatalogInventory\Model\Stock;
 use Magento\CatalogInventory\Api\StockConfigurationInterface;
+use Magento\CatalogInventory\Model\Stock;
 use Magento\Framework\App\ObjectManager;
 
 /**
@@ -46,19 +46,23 @@ class Status extends \Magento\Framework\Model\ResourceModel\Db\AbstractDb
      * @param \Magento\Store\Model\WebsiteFactory $websiteFactory
      * @param \Magento\Eav\Model\Config $eavConfig
      * @param string $connectionName
+     * @param \Magento\CatalogInventory\Api\StockConfigurationInterface $stockConfiguration
      */
     public function __construct(
         \Magento\Framework\Model\ResourceModel\Db\Context $context,
         \Magento\Store\Model\StoreManagerInterface $storeManager,
         \Magento\Store\Model\WebsiteFactory $websiteFactory,
         \Magento\Eav\Model\Config $eavConfig,
-        $connectionName = null
+        $connectionName = null,
+        $stockConfiguration = null
     ) {
         parent::__construct($context, $connectionName);
 
         $this->_storeManager = $storeManager;
         $this->_websiteFactory = $websiteFactory;
         $this->eavConfig = $eavConfig;
+        $this->stockConfiguration = $stockConfiguration ?: ObjectManager::getInstance()
+            ->get(StockConfigurationInterface::class);
     }
 
     /**
@@ -204,7 +208,7 @@ public function getProductCollection($lastEntityId = 0, $limit = 1000)
      */
     public function addStockStatusToSelect(\Magento\Framework\DB\Select $select, \Magento\Store\Model\Website $website)
     {
-        $websiteId = $this->getStockConfiguration()->getDefaultScopeId();
+        $websiteId = $this->getWebsiteId($website->getId());
         $select->joinLeft(
             ['stock_status' => $this->getMainTable()],
             'e.entity_id = stock_status.product_id AND stock_status.website_id=' . $websiteId,
@@ -221,7 +225,7 @@ public function addStockStatusToSelect(\Magento\Framework\DB\Select $select, \Ma
      */
     public function addStockDataToCollection($collection, $isFilterInStock)
     {
-        $websiteId = $this->getStockConfiguration()->getDefaultScopeId();
+        $websiteId = $this->getWebsiteId();
         $joinCondition = $this->getConnection()->quoteInto(
             'e.entity_id = stock_status_index.product_id' . ' AND stock_status_index.website_id = ?',
             $websiteId
@@ -255,7 +259,7 @@ public function addStockDataToCollection($collection, $isFilterInStock)
      */
     public function addIsInStockFilterToCollection($collection)
     {
-        $websiteId = $this->getStockConfiguration()->getDefaultScopeId();
+        $websiteId = $this->getWebsiteId();
         $joinCondition = $this->getConnection()->quoteInto(
             'e.entity_id = stock_status_index.product_id' . ' AND stock_status_index.website_id = ?',
             $websiteId
@@ -277,6 +281,19 @@ public function addIsInStockFilterToCollection($collection)
         return $this;
     }
 
+    /**
+     * @param \Magento\Store\Model\Website $websiteId
+     * @return int
+     */
+    private function getWebsiteId($websiteId = null)
+    {
+        if (null === $websiteId) {
+            $websiteId = $this->stockConfiguration->getDefaultScopeId();
+        }
+
+        return $websiteId;
+    }
+
     /**
      * Retrieve Product(s) status for store
      * Return array where key is a product_id, value - status
@@ -335,18 +352,4 @@ public function getProductStatus($productIds, $storeId = null)
         }
         return $statuses;
     }
-
-    /**
-     * @return StockConfigurationInterface
-     *
-     * @deprecated 100.1.0
-     */
-    private function getStockConfiguration()
-    {
-        if ($this->stockConfiguration === null) {
-            $this->stockConfiguration = \Magento\Framework\App\ObjectManager::getInstance()
-                ->get(\Magento\CatalogInventory\Api\StockConfigurationInterface::class);
-        }
-        return $this->stockConfiguration;
-    }
 }

app/code/Magento/ConfigurableProduct/Model/Product/Type/Configurable.php

@@ -3,17 +3,18 @@
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
+
 namespace Magento\ConfigurableProduct\Model\Product\Type;
 
 use Magento\Catalog\Api\Data\ProductAttributeInterface;
 use Magento\Catalog\Api\Data\ProductInterface;
 use Magento\Catalog\Api\Data\ProductInterfaceFactory;
 use Magento\Catalog\Api\ProductRepositoryInterface;
-use Magento\ConfigurableProduct\Model\Product\Type\Collection\SalableProcessor;
 use Magento\Catalog\Model\Config;
+use Magento\Catalog\Model\Product\Gallery\ReadHandler as GalleryReadHandler;
+use Magento\ConfigurableProduct\Model\Product\Type\Collection\SalableProcessor;
 use Magento\Framework\App\ObjectManager;
 use Magento\Framework\EntityManager\MetadataPool;
-use Magento\Catalog\Model\Product\Gallery\ReadHandler as GalleryReadHandler;
 
 /**
  * Configurable product type implementation
@@ -266,7 +267,6 @@ public function __construct(
             $productRepository,
             $serializer
         );
-
     }
 
     /**
@@ -682,7 +682,7 @@ private function saveConfigurableOptions(ProductInterface $product)
                 ->setProductId($product->getData($metadata->getLinkField()))
                 ->save();
         }
-        /** @var $configurableAttributesCollection \Magento\ConfigurableProduct\Model\ResourceModel\Product\Type\Configurable\Attribute\Collection  */
+        /** @var $configurableAttributesCollection \Magento\ConfigurableProduct\Model\ResourceModel\Product\Type\Configurable\Attribute\Collection */
         $configurableAttributesCollection = $this->_attributeCollectionFactory->create();
         $configurableAttributesCollection->setProductFilter($product);
         $configurableAttributesCollection->addFieldToFilter(
@@ -1276,6 +1276,8 @@ public function getSalableUsedProducts(\Magento\Catalog\Model\Product $product,
      * Load collection on sub-products for specified configurable product
      *
      * Load collection of sub-products, apply result to specified configurable product and store result to cache
+     * Please note $salableOnly parameter is used for backwards compatibility because of deprecated method
+     * getSalableUsedProducts
      * Number of loaded sub-products depends on $salableOnly parameter
      * $salableOnly = true - result array contains only salable sub-products
      * $salableOnly = false - result array contains all sub-products
@@ -1292,7 +1294,7 @@ private function loadUsedProducts(\Magento\Catalog\Model\Product $product, $cach
         if (!$product->hasData($dataFieldName)) {
             $usedProducts = $this->readUsedProductsCacheData($cacheKey);
             if ($usedProducts === null) {
-                $collection = $this->getConfiguredUsedProductCollection($product);
+                $collection = $this->getConfiguredUsedProductCollection($product, false);
                 if ($salableOnly) {
                     $collection = $this->salableProcessor->process($collection);
                 }
@@ -1386,13 +1388,18 @@ private function getUsedProductsCacheKey($keyParts)
      * Retrieve related products collection with additional configuration
      *
      * @param \Magento\Catalog\Model\Product $product
+     * @param bool $skipStockFilter
      * @return \Magento\ConfigurableProduct\Model\ResourceModel\Product\Type\Configurable\Product\Collection
      */
-    private function getConfiguredUsedProductCollection(\Magento\Catalog\Model\Product $product)
-    {
+    private function getConfiguredUsedProductCollection(
+        \Magento\Catalog\Model\Product $product,
+        $skipStockFilter = true
+    ) {
         $collection = $this->getUsedProductCollection($product);
+        if ($skipStockFilter) {
+            $collection->setFlag('has_stock_status_filter', true);
+        }
         $collection
-            ->setFlag('has_stock_status_filter', true)
             ->addAttributeToSelect($this->getCatalogConfig()->getProductAttributes())
             ->addFilterByRequiredOptions()
             ->setStoreId($product->getStoreId());

app/code/Magento/ConfigurableProduct/Test/Unit/Model/Product/Type/ConfigurableTest.php

@@ -8,20 +8,20 @@
 use Magento\Catalog\Api\Data\ProductExtensionInterface;
 use Magento\Catalog\Api\Data\ProductInterface;
 use Magento\Catalog\Model\Config;
-use Magento\ConfigurableProduct\Model\Product\Type\Configurable;
-use Magento\Framework\EntityManager\EntityMetadata;
-use Magento\Framework\EntityManager\MetadataPool;
-use Magento\Customer\Model\Session;
-use Magento\ConfigurableProduct\Model\ResourceModel\Product\Type\Configurable\Attribute\CollectionFactory;
-use Magento\ConfigurableProduct\Model\ResourceModel\Product\Type\Configurable\Attribute\Collection;
 use Magento\Catalog\Model\Product\Configuration\Item\Option\OptionInterface;
-use Magento\Framework\Api\ExtensionAttribute\JoinProcessorInterface;
+use Magento\ConfigurableProduct\Model\Product\Type\Collection\SalableProcessor;
+use Magento\ConfigurableProduct\Model\Product\Type\Configurable;
 use Magento\ConfigurableProduct\Model\Product\Type\Configurable\AttributeFactory;
+use Magento\ConfigurableProduct\Model\ResourceModel\Product\Type\Configurable\Attribute\Collection;
+use Magento\ConfigurableProduct\Model\ResourceModel\Product\Type\Configurable\Attribute\CollectionFactory;
+use Magento\ConfigurableProduct\Model\ResourceModel\Product\Type\Configurable\Product\Collection as ProductCollection;
 use Magento\ConfigurableProduct\Model\ResourceModel\Product\Type\ConfigurableFactory;
+use Magento\Customer\Model\Session;
 use Magento\Eav\Model\Entity\Attribute\Frontend\AbstractFrontend;
 use Magento\Eav\Model\Entity\Attribute\Source\AbstractSource;
-use Magento\ConfigurableProduct\Model\ResourceModel\Product\Type\Configurable\Product\Collection as ProductCollection;
-use Magento\ConfigurableProduct\Model\Product\Type\Collection\SalableProcessor;
+use Magento\Framework\Api\ExtensionAttribute\JoinProcessorInterface;
+use Magento\Framework\EntityManager\EntityMetadata;
+use Magento\Framework\EntityManager\MetadataPool;
 
 /**
  * @SuppressWarnings(PHPMD.LongVariable)