MAGETWO-62271: Inconsistent saving of Stock Data

Author: Valeriy Nayda

app/code/Magento/Catalog/Test/Unit/Model/Product/CopierTest.php

@@ -5,6 +5,7 @@
  */
 namespace Magento\Catalog\Test\Unit\Model\Product;
 
+use Magento\Catalog\Api\Data\ProductInterface;
 use \Magento\Catalog\Model\Product\Copier;
 
 class CopierTest extends \PHPUnit_Framework_TestCase
@@ -80,10 +81,14 @@ protected function setUp()
 
     public function testCopy()
     {
+        $productData = [
+            'product data' => ['product data'],
+            ProductInterface::EXTENSION_ATTRIBUTES_KEY => [],
+        ];
         $this->productMock->expects($this->atLeastOnce())->method('getWebsiteIds');
         $this->productMock->expects($this->atLeastOnce())->method('getCategoryIds');
         $this->productMock->expects($this->any())->method('getData')->willReturnMap([
-            ['', null, 'product data'],
+            ['', null, $productData],
             ['linkField', null, '1'],
         ]);
 
@@ -135,7 +140,7 @@ public function testCopy()
         )->with(
             \Magento\Store\Model\Store::DEFAULT_STORE_ID
         );
-        $duplicateMock->expects($this->once())->method('setData')->with('product data');
+        $duplicateMock->expects($this->once())->method('setData')->with(['product data' => ['product data']]);
         $this->copyConstructorMock->expects($this->once())->method('build')->with($this->productMock, $duplicateMock);
         $duplicateMock->expects($this->once())->method('getUrlKey')->willReturn('urk-key-1');
         $duplicateMock->expects($this->once())->method('setUrlKey')->with('urk-key-2');