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Comfort: driver or passenger height, weight, body shape, leg room, ingress or
egress through a front door or back door, and loading or unloading through a
hatchback or rear door.
Usefulness: the number of seats versus the number of passengers, trunk space,
convertible hauling space, on-road versus off-road, or trailer hitch weight
capacity
Performance: gas mileage, minimum grade of gas required, acceleration for
freeway merging, acceleration to beat your neighbor, cornering at low speeds,
cornering at high speeds, and the time or mileage between maintenance service
When you have your testing objectives clear in mind, you choose the testing ap-
proaches that best validate the car against those objectives. The following examples
show some testing approaches and the kinds of testing objectives they can validate.
Testing Approaches Include
examining the sticker price and sale contract
trying out the radio, the air conditioner, and the lights
trying acceleration, stopping, and cornering
These testing approaches are referred to by fairly common terminology in the testing
industry.
Examine
Static testing
( observe, read, review without actually driving the car)
Try out
Functional and structural testing
( work different features of the car without actually driving the car)
Try
Performance testing
( work different features of the car by actually driving the car)
1.2.3 Non-Software Testing at the Developer Level—
Building a Car
Now, we will switch from the user's, buyer's, or driver's perspective to the auto
manufacturer's perspective. As with a shopper, it is important for a car builder to
have specifi c testing objectives in mind and discard other testing objectives that are
inappropriate for new car development.
Testing Objectives of a New Car to be Built
validate design via scale models.
validate operation of prototypes.
validate mass assembly plans from prototypes.
The basis for this example is the normal progression of new car development that
starts with written requirements for a new car such as
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