ISSUE-15950: Magento2 CSV product import qty and is_in_stock not working correct.

Author: p-bystritsky

app/code/Magento/CatalogImportExport/Model/Import/Product.php

@@ -2847,9 +2847,7 @@ private function formatStockDataForRow(array $rowData)
         )
         ) {
             $stockItemDo->setData($row);
-            $row['is_in_stock'] = $stockItemDo->getBackorders() && isset($row['is_in_stock'])
-                ? $row['is_in_stock']
-                : $this->stockStateProvider->verifyStock($stockItemDo);
+            $row['is_in_stock'] = $row['is_in_stock'] ?? $this->stockStateProvider->verifyStock($stockItemDo);
             if ($this->stockStateProvider->verifyNotification($stockItemDo)) {
                 $row['low_stock_date'] = $this->dateTime->gmDate(
                     'Y-m-d H:i:s',

dev/tests/integration/testsuite/Magento/CatalogImportExport/Model/Import/ProductTest.php

@@ -2199,6 +2199,20 @@ public function testImportWithBackordersEnabled()
         $this->assertFalse($product->getDataByKey('quantity_and_stock_status')['is_in_stock']);
     }
 
+    /**
+     * Test that imported product stock status with stock quantity > 0 and backorders functionality disabled
+     * can be set to 'out of stock'.
+     *
+     * @magentoDbIsolation enabled
+     * @magentoAppIsolation enabled
+     */
+    public function testImportWithBackordersDisabled()
+    {
+        $this->importFile('products_to_import_with_backorders_disabled_and_not_0_qty.csv');
+        $product = $this->getProductBySku('simple_new');
+        $this->assertFalse($product->getDataByKey('quantity_and_stock_status')['is_in_stock']);
+    }
+
     /**
      * Import file by providing import filename in parameters
      *

dev/tests/integration/testsuite/Magento/CatalogImportExport/Model/Import/_files/products_to_import_with_backorders_disabled_and_not_0_qty.csv

@@ -0,0 +1,2 @@
+sku,store_view_code,attribute_set_code,product_type,categories,product_websites,name,description,short_description,weight,product_online,tax_class_name,visibility,price,special_price,special_price_from_date,special_price_to_date,url_key,meta_title,meta_keywords,meta_description,base_image,base_image_label,small_image,small_image_label,thumbnail_image,thumbnail_image_label,created_at,updated_at,new_from_date,new_to_date,display_product_options_in,map_price,msrp_price,map_enabled,gift_message_available,custom_design,custom_design_from,custom_design_to,custom_layout_update,page_layout,product_options_container,msrp_display_actual_price_type,country_of_manufacture,additional_attributes,qty,out_of_stock_qty,use_config_min_qty,is_qty_decimal,allow_backorders,use_config_backorders,min_cart_qty,use_config_min_sale_qty,max_cart_qty,use_config_max_sale_qty,is_in_stock,notify_on_stock_below,use_config_notify_stock_qty,manage_stock,use_config_manage_stock,use_config_qty_increments,qty_increments,use_config_enable_qty_inc,enable_qty_increments,is_decimal_divided,website_id,related_skus,crosssell_skus,upsell_skus,additional_images,additional_image_labels,hide_from_product_page,custom_options,bundle_price_type,bundle_sku_type,bundle_price_view,bundle_weight_type,bundle_values,associated_skus
+simple_new,,Default,simple,,base,New Product,,,,1,Taxable Goods,"Catalog, Search",10,,,,new-product,New Product,New Product,New Product ,,,,,,,10/20/2015 7:05,10/20/2015 7:05,,,Block after Info Column,,,,,,,,,,,,,"has_options=1,quantity_and_stock_status=In Stock,required_options=1",100,0,1,0,0,0,1,1,10000,1,0,1,1,1,0,1,1,0,0,0,1,,,,,,,,,,,,,