public function testGetBuyRequestOptionByCode()
{
$optionCode = "info_buyRequest";
$buyRequestQuantity = 23;
$optionMock = $this->getMockBuilder('Magento\\Quote\\Model\\Quote\\Item\\Option')->setMethods(['setItem', 'getCode', '__wakeup', 'getValue'])->disableOriginalConstructor()->getMock();
$optionMock->expects($this->once())->method('setItem')->with($this->model)->will($this->returnValue($optionMock));
$optionMock->expects($this->exactly(3))->method('getCode')->will($this->returnValue($optionCode));
$optionMock->expects($this->once())->method('getValue')->will($this->returnValue(serialize(['qty' => $buyRequestQuantity])));
$this->model->addOption($optionMock);
$quantity = 12;
$this->localeFormat->expects($this->at(0))->method('getNumber')->with($quantity)->will($this->returnValue($quantity));
$this->model->setQty($quantity);
$this->assertEquals($quantity, $this->model->getQty());
$buyRequest = $this->model->getBuyRequest();
$this->assertEquals($buyRequestQuantity, $buyRequest->getOriginalQty());
$this->assertEquals($quantity, $buyRequest->getQty());
}