MAGETWO-35462: Refactor \Magento\Framework\Model\Resource\Db\AbstractDb only update changed fields

- Failed integration test fix

Author: Maksym Savich

lib/internal/Magento/Framework/Model/AbstractModel.php

@@ -305,8 +305,10 @@ public function load($modelId, $field = null)
     {
         $this->_beforeLoad($modelId, $field);
         $this->_getResource()->load($this, $modelId, $field);
+        $this->_afterLoad();
         $this->setOrigData();
         $this->_hasDataChanges = false;
+        $this->updateStoredData();
         return $this;
     }
 

lib/internal/Magento/Framework/Model/Resource/Db/AbstractDb.php

@@ -365,7 +365,6 @@ public function load(\Magento\Framework\Model\AbstractModel $object, $value, $fi
 
         $this->unserializeFields($object);
         $this->_afterLoad($object);
-        $object->afterLoad();
 
         return $this;
     }

lib/internal/Magento/Framework/Model/Test/Unit/Resource/Db/AbstractDbTest.php

@@ -278,20 +278,15 @@ public function testLoad()
     {
         $contextMock = $this->getMock('\Magento\Framework\Model\Context', [], [], '', false);
         $registryMock = $this->getMock('\Magento\Framework\Registry', [], [], '', false);
-        $resourceMock = $this->getMock('Magento\Framework\Model\Resource\Db\AbstractDb', ['_construct'], [], '', false);
         $abstractModelMock = $this->getMockForAbstractClass(
             '\Magento\Framework\Model\AbstractModel',
-            [$contextMock, $registryMock, $resourceMock],
+            [$contextMock, $registryMock],
             '',
             false,
             true,
             true,
-            ['__wakeup', 'getResource', '_afterLoad']
+            ['__wakeup']
         );
-        $abstractModelMock->expects($this->any())
-                    ->method('getResource')
-                    ->will($this->returnValue($resourceMock));
-        $abstractModelMock->expects($this->once())->method('_afterLoad');
 
         $value = 'some_value';
         $idFieldName = new \ReflectionProperty('Magento\Framework\Model\Resource\Db\AbstractDb', '_idFieldName');