Exercise 6.6
It should be good enough to check just a few of the possibilities. It would be wise to
check the boundaries as well as at least one non-boundary value. Examples of times to
test: 9, 13, 17
Exercise 6.7
Yes, it is possible to use the same appointment object at different times within a single
day.
The tests are not as legitimate anymore, because we can no longer see the difference
between the objects (because there is none) and therefore we can't be sure that the
appointments are in the correct time slots.
It would make sense to use the same appointment object if you have a recurring
appointment. For instance you might have a daily meeting with someone.
Exercise 6.8
Several of the tests will fail.
makeAppointment only uses the starting time of an appointment to check if the slot is
free, and it can therefore overwrite other appointments or exceed the boundary (which
results in an exception). For instance, try booking a two-hour appointment at 1700 or
one at 0900 when the 1000 time is already booked.
Exercise 6.9
Positive Negative
6.1 X
6.2 X
6.3 X
6.4 X
6.5 X
6.6 X
Other negative tests:
- test how the application handles a 'null' object as an appointment.
- test zero and negative values for duration and time.
A positive test could be to test that appointments longer than one hour have the
correct duration after being inserted.
Exercise 6.13
