MAGETWO-99930: Configuarable product stock status stays 'In Stock'

Author: Oleksandr Iegorov

dev/tests/integration/testsuite/Magento/Catalog/_files/product_simple.php

@@ -5,7 +5,7 @@
  */
 
 use Magento\Catalog\Api\Data\ProductTierPriceExtensionFactory;
-use Magento\Catalog\Api\Data\ProductExtensionInterfaceFactory;
+use Magento\Catalog\Api\Data\ProductExtension;
 
 \Magento\TestFramework\Helper\Bootstrap::getInstance()->reinitialize();
 
@@ -20,15 +20,14 @@
 $tierPriceFactory = $objectManager->get(\Magento\Catalog\Api\Data\ProductTierPriceInterfaceFactory::class);
 /** @var  $tpExtensionAttributes */
 $tpExtensionAttributesFactory = $objectManager->get(ProductTierPriceExtensionFactory::class);
-/** @var  $productExtensionAttributes */
-$productExtensionAttributesFactory = $objectManager->get(ProductExtensionInterfaceFactory::class);
 
 $adminWebsite = $objectManager->get(\Magento\Store\Api\WebsiteRepositoryInterface::class)->get('admin');
 $tierPriceExtensionAttributes1 = $tpExtensionAttributesFactory->create()
     ->setWebsiteId($adminWebsite->getId());
-$productExtensionAttributesWebsiteIds = $productExtensionAttributesFactory->create(
-    ['website_ids' => $adminWebsite->getId()]
-);
+
+/** @var  $productExtension */
+$productExtensionAttributesWebsiteIds = $objectManager->get(ProductExtension::class);
+$productExtensionAttributesWebsiteIds->setWebsiteIds([$adminWebsite->getId()]);
 
 $tierPrices[] = $tierPriceFactory->create(
     [