GUI Testing Chapter 19 GUI characteristic Figure 19.1 What is the - PowerPoint PPT Presentation

GUI Testing Chapter 19

GUI characteristic Figure 19.1  What is the main characteristic of GUIs? GUI–2

GUI characteristic – 2  What is the main characteristic of GUIs?  Event driven GUI–3

Levels of testing  What are the levels of testing? GUI–4

Levels of testing  For GUIs what are the levels of testing?  Unit testing  Integration testing  System level testing GUI–5

Unit testing – what  For GUIs what are the levels of testing?  Unit testing  What do we test? GUI–6

Unit testing – what – 2  For GUIs what are the levels of testing?  Unit testing – what do we test?  Button level  Text box level GUI–7

Unit testing – how  How do we do unit testing? GUI–8

Unit testing – how – 2  How do we do unit testing?  Try clicking buttons and using text boxes  Visually compare with expected results GUI–9

Unit testing – difficulties  What are the difficulties of unit testing? GUI–10

Unit testing – difficulties – 2  What are the difficulties of unit testing?  Distinguishing  Output errors  Computation errors  What else? GUI–11

Unit testing – difficulties – 3  What are the difficulties of unit testing?  Distinguishing  Output errors  Computation errors  Not easily repeatable  Seat of the pants testing  User input and observation errors GUI–12

Unit testing – overcome difficulties  How do we overcome the difficulties? GUI–13

Unit testing – overcome difficulties – 2  How do we overcome the difficulties?  Automate with special drivers GUI–14

Unit testing – other considerations  Other considerations? GUI–15

Unit testing – other considerations – 2  Other considerations?  Mode of implementation  What does this mean? GUI–16

Unit testing – other considerations – 3  Other considerations?  Mode of implementation  Using GUI tools – Visual Basic  E.g. do not need to test input/output at text box level  Text is stored correctly  Writing custom Java classes  E.g. need to test input/output at text box level  Is text stored correctly? GUI–17

Integration testing – what  What are the levels of testing?  Unit testing  Integration testing  What do we do? GUI–18

Integration testing – what – 2  What are the levels of testing?  Unit testing  Integration testing  Little to do for GUIs GUI–19

System testing – what  What are the levels of testing?  Unit testing  Integration testing  System testing  What do we do? GUI–20

System testing – what – 2  What are the levels of testing?  Unit testing  Integration testing  System testing  Exercise event paths GUI–21

Event paths  How do we find event paths? GUI–22

Event paths – 2  How do we find event paths?  Build EDPNs GUI–23

EDPN build  How do we build EDPNs? GUI–24

EDPN build – 2 Figure 19.2  How do we build EDPNs?  First build for atomic system functions GUI–25

EDPN build – 3  How do we build EDPNs?  First build for atomic system functions  Then? GUI–26

EDPN build – 4 Figure 19.3  How do we build EDPNs?  First build for atomic system functions  Combine into one GUI–27

EDPN use  How do we use EDPNs? GUI–28

EDPN use – 2  How do we use EDPNs?  Look for coverage GUI–29

EDPN use – 3  How do we use EDPNs?  Look for coverage  What types of coverage do we look for? GUI–30

EDPN use – 4  How do we use EDPNs?  Look for coverage  Every atomic system function  Every input port  Every output port  Explore common threads  Explore abnormal user behaviour threads GUI–31

Atomic system function  What are the problems with ASFs? GUI–32

Atomic system function – 2  What are the problems with ASFs?  Some do not have visible system-level output  E.g. store US dollar amount GUI–33

Atomic system function – 3  What are the problems with ASFs?  Some do not have visible system-level output  E.g. store US dollar amount  What else? GUI–34

Atomic system function – 4  What are the problems with ASFs?  Determining what is an atomic system function  Copy needs to have select first  Is select an atomic function?  Is copy an atomic function?  Complicating / simplifying factor? GUI–35

Atomic system function – 5 What are the problems?   Determining what is an atomic system function  Copy needs to have select first  Is select an atomic function?  Is copy an atomic function?  Complicating/simplifying factor?  Grey out invalid buttons  E.g. un-grey-out is an output of select  Un-greyed-out is a precondition of copy  Forced navigation simplifies GUI use and testing GUI–36

Common threads  Explore common threads  What are the problems? GUI–37

Common threads – 2  Explore common threads  What are the problems?  Determining what is common GUI–38

Common threads – 3  Explore common threads  What are the problems?  Determining what is common  How can it be done? GUI–39

Common threads – 4  Explore common threads  What are the problems?  Determining what is common  How can it be done?  Gather usage patterns GUI–40

Abnormal behaviour  Explore abnormal user behaviour threads  What are the problems? GUI–41

Abnormal behaviour – 2  Explore abnormal user behaviour  Threads could be infinitely long and/or silly  E.g. toggle between countries and then quit  What else? GUI–42

Abnormal behaviour – 3  Explore abnormal user behaviour  Threads could be infinitely long and/or silly  E.g. toggle between countries and then quit  Interaction with other processes GUI–43