Supercar
Supercar is an online vehicle sales website specializing in single manufacturer’s Sports Utility
Vehicles (SUVs) and saloons. A vehicle has two key elements, power unit and body style. The
manufacturer offers three choices of power unit: petrol, diesel and hybrid. There are 3 main body
styles: Saloon, Hatchback and SUV. SUVs only come as petrol and diesel options. Hybrid is
available for Hatchback only. The site will allow an order to be processed if the chosen vehicle
configurations are in stock, otherwise a message will be displayed asking the user to try again later.

Based on the specification the following classification tree has been developed:

Based on the “Supercar” classification tree the following positive test cases have been created:

Which test case is needed to complete the set?

A.
Power Unit: Hybrid, Body Style: Saloon

B.
Power Unit: Diesel, Body Style: Hatchback

C.
Power Unit: Petrol, Body Style: Saloon

D.
Power Unit: Hybrid, Body Style: Hatchback

Explanation: