Verification and Validation

1. Software verification and validation Mustufa Sir

2. Index 1. Software Verification 2. Types of reviews on the basis of stage phases 3. Examples of entities involved in verification 4. Reviews in testing lifecycle 5. Coverage in verification 6. Concerns of verification 7. Software Validation 8. Coverage in validation 9. Acceptance testing 10. Management of Verification and Validation (V & V) Mustufa Sir

3. 1. Software Verification 1.1 Introduction 1.2 Features 1.3 Verification Workbench 1.4 Methods of verification Mustufa Sir

4. 1.1 Introduction •Verification is the process of checking that a software achieves its goal without any bugs. •It is the process to ensure whether the product that is developed is right or not. •It verifies whether the developed product fulfills the requirements that we have. Mustufa Sir

5. 1.2 Features • Perform during early stages • It conducts software review, walkthrough and inspection • It demonstrates consistency, completeness and correctness Mustufa Sir

6. 1.3 Verification Workbench Mustufa Sir

7. 1.4 Methods of verification 1. Self review 2. Peer review 3. Walkthrough 4. Inspection 5. Audit Mustufa Sir

8. 1. Self review • Self review is expected to be done by author or creator. • Self review is an excellent in defect prevention through self learning. Mustufa Sir

9. 2. Peer review • Code review done by peer or fellow developer. • It is also called as desk review. • Types- 1. Online peer review 2. Offline peer review Mustufa Sir

10. 3. Walkthrough • Some members of project team are involved in examining an artifact under review. • The comments and minutes are documented. Mustufa Sir

11. 4. Inspection • Agenda is decided in advance • People present are expert in the domain Phases of inspection 1. Planning for inspection 2. Kick-off inspection 3. Individual preparation 4. Inspection meeting 5. Decision on comments 6. Follow up Mustufa Sir

12. 5. Audit • Independent assess of the process. • 100% auditing can be considered as a quality control. Outcome of auditing • Observations • Achievements Types of audits 1. Kick-Off audit 2. Periodic software quality assurance audit 3. Phase end audit 4. Predelivery audit 5. Product audit Mustufa Sir

14. 2. Types of reviews on the basis of stage phases Mustufa Sir Types of reviews 2.1 In-process review Phase end review Periodic review Percent completion review 2.2 Post implementation review

15. Phase end review Mustufa Sir 2.1 In-process review

16. Periodic review Mustufa Sir 2.1 In-process review

17. Percent completion review • NO DIAGRAM Mustufa Sir 2.1 In-process review

18. 2.2 Post implementation review – Post mortem review – Conducted after the project get completed Mustufa Sir

20. 3. Examples of entities involved in verification Verification Entities performing verification Requirement review Business analysts, System analysts, Project team including architects, developer and customer / User Design review Project team, Customer / user Code review Development team, Customer / user Project plan review Project team, Customer / user, Suppliers Test artifacts review Test team, Development team, Customer / user Mustufa Sir

21. Phase Verification technique used Planning documents Inspection, Walk through, Peer review Requirements Inspection, Peer review Design Walkthrough, Peer review Coding Peer review, Superior review Test plan Inspection, Walk through, Peer review Test scenario Walkthrough, Peer review Test cases Peer review, Superior review Test results Walkthrough, peer review Mustufa Sir

23. 4. Reviews in testing lifecycle 1. Test Readiness Review 1. Prerequisites testing 2. Updations testing 3. Uninstallation testing 2. Test Completion Review Mustufa Sir

25. 5. Coverage in verification Statement coverage is a white box test design technique which involves execution of all the executable statements in the source code at least once. Decision coverage reports the true or false outcomes of each Boolean expression Path coverage deals with the total number of paths that could be covered by a test case. Path is actually a way, a flow of execution that follows a sequence of instructions Mustufa Sir

27. 6. Concerns of verification 1. Use of right verification technique 2. Integration of verification activities in SDLC 3. Resources and skills available for verification Mustufa Sir

29. 7. Software Validation 7.1 Introduction 7.2 Validation Workbench 7.3 Levels of Validation Mustufa Sir

30. 7.1 Introduction •Validation is a dynamic mechanism of Software testing and validates the actual product. •Validation is the only way to show that software is actually functioning Mustufa Sir

31. 7.2 Validation Workbench Mustufa Sir

32. 7.3 Levels of Validation 1. Unit testing 2. Integration testing 3. Interface testing 4. System testing 5. Cause effect graphing 6. Path expression and regular expression Mustufa Sir

34. 8. Coverage in validation 1. Requirement Coverage 2. Functionality Coverage 3. Feature Coverage Mustufa Sir

36. 9. Acceptance testing • Acceptance testing, a testing technique performed to determine whether or not the software system has met the requirement specifications. • The main purpose of this test is to evaluate the system's compliance with the business requirements and verify if it is has met the required criteria for delivery to end users. https://www.tutorialspoint.com/software_testi ng_dictionary/acceptance_testing.htm Mustufa Sir

37. Types of acceptance testing 1. Alpha 2. Beta 3. Gamma Mustufa Sir

39. 10. Management of Verification and Validation (V & V) • Defining the processes for Verification and Validation – Software quality assurance process – Software quality control process – Software development process – Software life cycle definition • Prepare plans for execution of process • Initiate implementation plan • Monitor execution plan • Analyze problems discovered during execution • Report progress of the processes • Ensure product satisfies requirements Mustufa Sir

40. Reference Mustufa Sir

41. Thank you Mustufa Sir

Verification and Validation

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