同济大学：《软件测试》课程电子教案（PPT课件）Chapter 02 Testing throughout the Software Lifecycle

Testing is part of quality assurance. Software Testing Chapter 2: Testing throughout the Software Lifecycle 同济大学 TONGJI UNIVERSITY

Testing is part of quality assurance. Software Testing Chapter 2: Testing throughout the Software Lifecycle

Testing throughout the Software Lifecycle Software Development Models ·Test Levels ·Test Types CONTENT Maintenance Testing 同濟大学 TONGJI UNIVERSITY Software Testing/Qinpei Zhao 2023/12/16 2

Software Testing / Qinpei Zhao 2023/12/16 •Software Development Models •Test Levels •Test Types •Maintenance Testing Testing throughout the Software Lifecycle 2

Software Development Models Key points The relationship between the lifestyle of software development,test activities and product. Have the idea that choosing the software development models according to project background and product characteristics Reasons of adopting different test level 同濟大学 TONGJI UNIVERSITY Software Testing/QinpeiZhao 2023/12/16 3

Software Development Models • The relationship between the lifestyle of software development, test activities and product. • Have the idea that choosing the software development models according to project background and product characteristics • Reasons of adopting different test level Software Testing / Qinpei Zhao 2023/12/16 Key points 3

Verification Validation ·Verification ·Validation “Are we building the ·“Are we building the system right??” right system?" ·Look for bugs in ·Look for bugs in phase deliverables system,based on phase deliverables Correspond to the developing process ·Correspond to the client's requirements 同濟大学 TONGJI UNIVERSITY Software Testing/Qinpei Zhao 2023/12/16

Verification & Validation Software Testing / Qinpei Zhao 2023/12/16 • Verification • “Are we building the system right?” • Look for bugs in phase deliverables • Correspond to the developing process • Validation • “Are we building the right system?” • Look for bugs in system, based on phase deliverables • Correspond to the client’s requirements 4

V-model It is hard to plan that far in advance When plans fail,then test fail .Usually schedule and budget risk driven Deeper level of design,then build,then test Intuitive and familiar model 同濟大学 TONGJI UNIVERSITY Software Testing/QinpeiZhao 2023/12/16 5

V-model Software Testing / Qinpei Zhao 2023/12/16 •It is hard to plan that far in advance • When plans fail, then test fail • Usually schedule and budget risk driven • Deeper level of design, then build, then test •Intuitive and familiar model 5

V-model User validation Requirements Acceptance Testing Engineering System System Requirements Testing Engineering Architecture System Integration Engineering Testing Subsystem Design Integration Testing verification Coding(SW) Fabrication(HW) Unit Testing 同濟大学 TONGJI UNIVERSITY Software Testing/Qinpei Zhao 2023/12/16 6

Software Testing / Qinpei Zhao 2023/12/16 V-model verification validation 6

V-model V-idea Development tasks and testing tasks corresponding to each stage of the software development process,the results need to be verified Verification and validation are two distinct activities, The test level corresponding to appropriate level of development Testing combines verification and validation 同濟大学 TONGJI UNIVERSITY Software Testing/Qinpei Zhao 2023/12/16 7

V-model •V-idea – Development tasks and testing tasks corresponding to each stage of the software development process, the results need to be verified •Verification and validation are two distinct activities, – The test level corresponding to appropriate level of development • Testing combines verification and validation Software Testing / Qinpei Zhao 2023/12/16 7

V-model Not confirm to just four test level Depends on different projects and software products The basis of test level Software product work(test case,description of requirement e.g.) Verification and validation ·CMM IEEE 12207 Software Process Standard 同濟大学 TONGJI UNIVERSITY Software Testing/QinpeiZhao 2023/12/16 8

V-model • Not confirm to just four test level – Depends on different projects and software products • The basis of test level – Software product work(test case, description of requirement e.g.) •Verification and validation • CMM •IEEE 12207 Software Process Standard Software Testing / Qinpei Zhao 2023/12/16 8

Iteration Model Set up the basic structure of the iteration model system,and then go through the next stage of development,refine,make more perfectly Iterative model is adopted when the requirement is not clear,and it is difficult to develop 同濟大学 TONGJI UNIVERSITY Software Testing/QinpeiZhao 2023/12/16 9

Iteration Model •Set up the basic structure of the iteration model system, and then go through the next stage of development, refine, make more perfectly •Iterative model is adopted when the requirement is not clear, and it is difficult to develop Software Testing / Qinpei Zhao 2023/12/16 9

Incremental Model Incremental model is defined by function,and certain functions will be finished at each stage. In practice,the incremental,iterative are often combined together. 同濟大学 TONGJI UNIVERSITY Software Testing/Qinpei Zhao 2023/12/16 10

Incremental Model •Incremental model is defined by function, and certain functions will be finished at each stage. •In practice, the incremental, iterative are often combined together. Software Testing / Qinpei Zhao 2023/12/16 10