MAGETWO-95313: [2.3] Missing URL Keys upon product import

Author: Mastiuhin Olexandr

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

@@ -1640,7 +1640,16 @@ protected function _saveProducts()
                 }
                 $rowScope = $this->getRowScope($rowData);
 
-                $rowData[self::URL_KEY] = $this->getUrlKey($rowData);
+                $urlKey = $this->getUrlKey($rowData);
+                if (!empty($rowData[self::URL_KEY]))  {
+                    // If url_key column and its value were in the CSV file
+                    $rowData[self::URL_KEY] = $urlKey;
+                } else if($this->isNeedToChangeUrlKey($rowData)) {
+                    // If url_key column was empty or even not declared in the CSV file but by the rules it is need to
+                    // be setteed. In case when url_key is generating from name column we have to ensure that the bunch
+                    // of products will pass for the event with url_key column.
+                    $bunch[$rowNum][self::URL_KEY] = $rowData[self::URL_KEY] = $urlKey;
+                }
 
                 $rowSku = $rowData[self::COL_SKU];
 
@@ -2889,6 +2898,27 @@ protected function getResource()
         return $this->_resource;
     }
 
+    /**
+     * Whether a url key is needed to be change.
+     * Returns false if
+     *
+     * @param array $rowData
+     * @return bool
+     */
+    private function isNeedToChangeUrlKey(array $rowData): bool
+    {
+        $urlKey = $this->getUrlKey($rowData);
+        $productExists = $this->isSkuExist($rowData[self::COL_SKU]);
+        $markedToEraseUrlKey = isset($rowData[self::URL_KEY]);
+        // The product isn't new and the url key index wasn't marked for change.
+        if (!$urlKey && $productExists && !$markedToEraseUrlKey) {
+            // Seems there is no need to change the url key
+            return false;
+        }
+
+        return true;
+    }
+
     /**
      * Get product entity link field
      *

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

@@ -1643,6 +1643,45 @@ public function testImportWithoutUrlKeys()
         }
     }
 
+    /**
+     * Make sure the absence of a url_key column in the csv file won't erase the url key of the existing products.
+     * To reach the goal we need to not send the name column, as the url key is generated from it.
+     *
+     * @magentoDataFixture Magento/Catalog/_files/product_simple_with_url_key.php
+     * @magentoDbIsolation disabled
+     * @magentoAppIsolation enabled
+     */
+    public function testImportWithoutUrlKeysAndName()
+    {
+        $products = [
+            'simple1' => 'url-key',
+            'simple2' => 'url-key2',
+        ];
+        $filesystem = $this->objectManager->create(\Magento\Framework\Filesystem::class);
+        $directory = $filesystem->getDirectoryWrite(DirectoryList::ROOT);
+        $source = $this->objectManager->create(
+            \Magento\ImportExport\Model\Import\Source\Csv::class,
+            [
+                'file' => __DIR__ . '/_files/products_to_import_without_url_keys_and_name.csv',
+                'directory' => $directory
+            ]
+        );
+
+        $errors = $this->_model->setParameters(
+            ['behavior' => \Magento\ImportExport\Model\Import::BEHAVIOR_APPEND, 'entity' => 'catalog_product']
+        )
+            ->setSource($source)
+            ->validateData();
+
+        $this->assertTrue($errors->getErrorsCount() == 0);
+        $this->_model->importData();
+
+        $productRepository = $this->objectManager->create(\Magento\Catalog\Api\ProductRepositoryInterface::class);
+        foreach ($products as $productSku => $productUrlKey) {
+            $this->assertEquals($productUrlKey, $productRepository->get($productSku)->getUrlKey());
+        }
+    }
+
     /**
      * @magentoAppIsolation enabled
      */

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

@@ -0,0 +1,3 @@
+sku,price
+simple1,25
+simple2,34