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Is Low Coupling
an Important
Design Principle
to KDT Scripts ?
Presenter: JienHuaGoo
1
Coupling In KDT Script
2
Introduction
Author
Experiment
Conclusion
NTUT
Woei-Kae Chen Chien-Hung Liu
Ping-Hung Chen
Yu Wang
3
GUI
4
5
6
Keyword-Driven
Testing (KDT)
7
8
Coupling
9
10
321
11
1
12
2
Low Coupling High Coupling
13
3
Low Coupling High Coupling
14
Test case
K
K
C
Test case
K
K
C
C
C
coupling type
15
Test case
K
K
C
16
V
V
V
V
V
UC = | E | / ( |V| -1 )
17
32
1
18
19
20
Case study
21
22
32
1
4
23
1
2
K
Coupling
3
Coupling
4
Coupling
27
28
1
28
29
30
31
1
32
R > 0 R < 0 |R| = 1 R = 0
33
Modification Cost
45 53 93 140 69
P1 P2 P3
P4
P5
34
35
Maintainability
3.5
4
2.5
1.5
2.5
P1
P2
P3
P4
P5
Readability
3
4
2.5
2.6
2.6
Conclusion
37
Thanks for listening
38

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Coupling