Тема: Що таке mock та stub?
Не підскажите що таке – mock/stub the database and IO devices.
І як його реалізувати?
Завдання: Implement a simple point of sale.
Assume you have:
– one input device: bar codes scanner
– two output devices: LCD display and printer
– single product sale: products bar code is scanned and:
– if the product is found in products database than it's name and price is printed on LCD
– if the product is not found than error message 'Product not found' is printed on LCD
– if the code scanned is empty than error message 'Invalid bar-code' is printed on LCD
– when 'exit' is input than receipt is printed on printer containing a list of all previously scanned items names and prices as well as total sum to be paid for all items; the total sum is also printed on LCD display
– use only SDK classes and your favorite test libraries
– mock/stub the database and IO devices
– concentrate on proper design and clean code, rather than supplying fully functioning application