Slides 20 - Control Flow Based Glass Box Testing

Question 1

Test coverage

Answer 1

Degree, expressed as a percentage, to which specified test coverage items have been exercised by a test case or test case suite

Question 2

Control flow diagram

Answer 2

Diagram that depicts the set of all possible sequences in which operations can be performed during the execution of a system or program
(Diagramm, das die Menge aller möglichen Sequenzen darstellt, in denen Operationen während der Ausführung eines Systems oder Programms ausgeführt werden können)

Question 3

Control flow based coverage

Answer 3

● Statement coverage
● Branch coverage
● Decision coverage
● Path coverage

Question 4

What does Branch coverage demands?

Answer 4

Branch coverage demands that every edge (branch) of the CFG is executed by at least once.

Question 5

Variants of Condition Coverage

Answer 5

● Basic Condition Coverage

● Branch and Condition Coverage

● Modified Condition Decision Coverage

● Compound Condition Coverage

Question 6

Branch Coverage Guarantees

Answer 6

● complete branch coverage

● basic condition coverage

Question 7

Compound Condition Coverage

Answer 7

Compound condition coverage requires the test of all possible combinations of basic conditions

Question 8

Path Coverage

Answer 8

Path coverage requires that every path in the control flow graph of a program is exercised by a test case.

• Full path coverage is not feasible!

Question 9

Practical criterion for Path Coverage

Answer 9

● limiting the number of traversals of loops

● avoids the path explosion caused by loops

Question 10

Approaches to Path Coverage

Answer 10

● Path coverage

● Structured path coverage

● Boundary-interior coverage