10. Testing Types

Question 1

Goals of testing

Answer 1

Testing is the process of examining the system, and its subsystems and components to determine its operational characteristics and whether it contains any defects

Question 2

Four functional testing types

Answer 2

1. Unit testing - test of an individual method, class or component
2. Integration testing - test the behaviour of a group of methods, classes or components
3. System and stress testing - test of an entire system or independent subsystems
4. Acceptance testing - test to determine whether a method, class or system functions according to the requirements

Question 3

Five non functional tests

Answer 3

1. Alpha- and beta tests - used to test the software in real-life circumstances
2. Performance testing - the process of testing to determine the performance
3. Stress test - often a program is written that issues multiple requests to the system that is being tested
4. Security test - the system is tested for security holes
5. User experience/Usability testing

Question 4

Black box vs. White box testing

Answer 4

Black box - a test that is written/performed without knowing the internals (we don’t know anything)
White box - (we know everything)

Question 5

Top-down implementation

Answer 5

You start by developing high level units (main) and then make the ones on the next levels until you have reached the bottom

Question 6

Bottom-up implementation

Answer 6

You start by implementing the functions on the lowest level and work your way up level by level until you have reached the top level

Question 7

Two types of freeze

Answer 7

Feature freeze: no new features are added, only bugs fixed
Code freeze: the code should not be touched

Question 8

Heuristic evaluation

Answer 8

Experts inspect the interface using for example the five key principles