Milliseid testdisaini tehnika pidite nende funktsioonide testimiseks kasutama?

For testing functions, especially business logic, the following test design techniques are often used:

• Equivalence partitioning — dividing input data into equivalence classes to test with a representative from each class.
• Boundary value analysis — checking values at the edges of permissible ranges, as errors often occur there.
• Cause-effect analysis (Decision table testing) — creating decision tables to verify all combinations of conditions and corresponding actions.
• State testing (State transition testing) — if the function depends on states, testing the transitions between them.

For example, if the function accepts the customer's age, classes can be defined: less than 18, from 18 to 60, greater than 60, and boundary values 17, 18, 60, 61 can be checked.