/**
* Run test execute method (fail load shipment model)
*/
public function testExecuteLoadShipmentFail()
{
$this->shipmentLoaderMock->expects($this->once())->method('load')->willThrowException(new \Magento\Framework\Exception\LocalizedException(__('message')));
$this->messageManagerMock->expects($this->once())->method('addError')->will($this->returnSelf());
$this->redirectSection();
$this->assertNull($this->controller->execute());
}