public function testUpdateQtyOption()
{
$productMock = $this->generateProductMock(self::PRODUCT_ID, self::PRODUCT_TYPE, self::PRODUCT_SKU, self::PRODUCT_NAME, self::PRODUCT_WEIGHT, self::PRODUCT_TAX_CLASS_ID, self::PRODUCT_COST);
$typeInstanceMock = $this->getMockForAbstractClass('Magento\\Catalog\\Model\\Product\\Type\\AbstractType', [], '', false, false, true, ['updateQtyOption']);
$productMock->expects($this->once())->method('getTypeInstance')->will($this->returnValue($typeInstanceMock));
$optionMock = $this->getMockBuilder('Magento\\Framework\\Object')->disableOriginalConstructor()->setMethods(['getProduct'])->getMock();
$optionMock->expects($this->once())->method('getProduct')->will($this->returnValue($productMock));
$quantityValue = 12;
$this->model->setProduct($productMock);
$typeInstanceMock->expects($this->once())->method('updateQtyOption')->with($this->model->getOptions(), $optionMock, $quantityValue, $productMock);
$this->assertEquals($this->model, $this->model->updateQtyOption($optionMock, $quantityValue));
}
