ACP2E-3660: REST endpoint Product Import Json not validate the mandatory fields

Author: aplapana

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

@@ -2708,7 +2708,7 @@ public function validateRow(array $rowData, $rowNum)
         // if product doesn't exist, need to throw critical error else all errors should be not critical.
         $errorLevel = $this->getValidationErrorLevel($sku);
 
-        $hasValidatedImportParent = $sku && $this->skuProcessor->getNewSku($sku);
+        $hasValidatedImportParent = $sku && $this->getNewSku($sku);
         $contextRowData = array_merge(['has_import_parent' => $hasValidatedImportParent], $rowData);
         if (!$this->validator->isValid($contextRowData)) {
             foreach ($this->validator->getMessages() as $message) {

app/code/Magento/CatalogImportExport/Test/Unit/Model/Import/ProductTest.php

@@ -1242,7 +1242,7 @@ public function testValidateRowValidateExistingProductTypeAddErrorRowCall(): voi
             ],
         ];
         $importProduct = $this->createModelMockWithErrorAggregator(
-            ['addRowError', 'getOptionEntity'],
+            ['addRowError', 'getOptionEntity', 'getNewSku'],
             ['isRowInvalid' => true]
         );
 
@@ -1300,7 +1300,7 @@ public function testValidateRowValidateNewProductTypeAddRowErrorCall(
             $sku => null
         ];
         $importProduct = $this->createModelMockWithErrorAggregator(
-            ['addRowError', 'getOptionEntity'],
+            ['addRowError', 'getOptionEntity', 'getNewSku'],
             ['isRowInvalid' => true]
         );
 
@@ -1356,7 +1356,7 @@ public function testValidateRowValidateNewProductTypeGetNewSkuCall(): void
         $this->setPropertyValue($importProduct, '_productTypeModels', $_productTypeModels);
         $this->setPropertyValue($importProduct, '_attrSetNameToId', $_attrSetNameToId);
 
-        $this->skuProcessor->expects($this->once())->method('getNewSku')->willReturn(null);
+        $this->skuProcessor->expects($this->exactly(2))->method('getNewSku')->willReturn(null);
         $this->skuProcessor->expects($this->once())->method('addNewSku')->with($sku, $expectedData);
         $this->setPropertyValue($importProduct, 'skuProcessor', $this->skuProcessor);
         $this->setPrivatePropertyValue($importProduct, 'skuStorage', $this->skuStorageMock);