Slides 11 + 12 - Boundary Value Testing

Question 1

Single Fault Assumption

Answer 1

An error is most unlikely the result of two or more simultaneous defects!

The input variables must be independent and must represent bounded properties!

Question 2

When is WCBT (Worst Case Boundary Testing) useful?

Answer 2

WCBT is especially useful, if the input values are not

independent and the error costs are high

Question 3

Boundary Testings

Answer 3

● Robustness Boundary Value Testing

● Worst Case Boundary Value Testing

● Worst Case Robustness Boundary Value Testing

Question 4

Equivalence class

Answer 4

Partition (set of subsets), determined by an equivalence relation

Question 5

Assumption

Answer 5

If the representative test case detects an error, all other test cases will detect this error, too!

Question 6

Weak and Strong Normal Equivalence Class Test

Answer 6

• Weak:
  Each representative value of all equivalence classes needs to be included in at least one test case.
• Strong:
  A test case is created for every element of the Cartesian product of the partitions

Question 7

Weak and Strong Robust Equivalence Class Test

Answer 7

• Weak:
  Each representative value of all equivalence classes needs to be included in at least one test case
• Strong:
  A test case is created for every element of the Cartesian product of the equivalence classes, both valid and invalid