MAGETWO-45311: Remove dependency on Website for Cataloginventory

 - Fixed unit tests

Author: aohorodnyk

app/code/Magento/CatalogInventory/Test/Unit/Api/StockRegistryTest.php

@@ -82,7 +82,7 @@ protected function setUp()
             false
         );
         $this->stockItem = $this->getMockBuilder('Magento\CatalogInventory\Api\Data\StockItemInterface')
-            ->setMethods(['setProductId', 'getData', 'addData', 'getItemId'])
+            ->setMethods(['setProductId', 'getData', 'addData', 'getItemId', 'getWebsiteId'])
             ->disableOriginalConstructor()
             ->getMockForAbstractClass();
         $this->stockStatus = $this->getMockForAbstractClass(

app/code/Magento/CatalogInventory/Test/Unit/Model/Plugin/AroundProductRepositorySaveTest.php

@@ -75,7 +75,9 @@ public function setUp()
         $this->closureMock = function () {
             return $this->savedProductMock;
         };
-        $this->stockItemMock = $this->getMock('\Magento\CatalogInventory\Api\Data\StockItemInterface');
+        $this->stockItemMock = $this->getMockBuilder('Magento\CatalogInventory\Api\Data\StockItemInterface')
+            ->setMethods(['setWebsiteId', 'getWebsiteId'])
+            ->getMockForAbstractClass();
     }
 
     public function testAroundSaveWhenProductHasNoStockItemNeedingToBeUpdated()