| Advantages of Black Box Testing |
|
- More effective on larger units of code than glass box testing
- Tester needs no knowledge of implementation, including specific programming language
- Tester and programmer are independent of each other
- tests are done from a user’s point of view
- will help to expose any ambiguities or inconsistencies in the specifications
- test cases can be designed as soon as the specifications are complete
|
|
|
| Disadvantages of Black Box Testing |
|
- Only a small number of possible inputs can actually be tested, to test every possible input stream would take nearly forever
- Without clear and concise specifications, test cases are hard to design
- There may be unnecessary repetition of test inputs if the tester is not informed of test cases the programmer has already tried
- May leave many program paths untested
- Can’t be directed toward specific segments of code which may be very complex (and therefore more error prone)
- Most testing related research has been directed toward glass box testing
|
|