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Ch14

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Transcript

  • 1. Top-Down Stub Testing Main Control Module Module B Stub Module C Stub Module A Stub Module G Stub Module F Stub Module E Stub Module D Stub Call to Module C Call to Module A Call to Module E Call to Module D Call to Module B Call to Module G Call to Module F Call Received and Acknowledged Call Received and Acknowledged Call Received and Acknowledged Call Received and Acknowledged Call Received and Acknowledged Call Received and Acknowledged Call Received and Acknowledged
  • 2. Module and Integration Testing Driver for Module C Module C Driver for Module B Module B Driver for Module A Module A Module B Module C Test Phase 1 Test a set of paths through lower-level modules B and C using test drivers. Total number of tests = v(B) + v(C) Test Phase 2 Test a set of paths through higher-level module A in integration with modules B and C using a test driver. Total number of tests = v(A) Total number of tests = v(A) + v(B) + v(C), The sum of the cyclomatic complexities of all integrated modules
  • 3. System Conversion Strategies New System Old System Cutover Point Direct Conversion Approach New System Old System Old System Shutdown Parallel Conversion Approach New System Old System Pilot Conversion Approach New System Old System Phased Conversion Approach New System Start Begin First Pilot Old System Shutdown Begin Phase-in Old System Shutdown
  • 4. On-Line Help
  • 5. Context-Sensitive Help
  • 6. Relative Distribution of Costs Across SDLC
  • 7. Classification of Software Tests   Manual Test Automated Test   Static   Inspection     Syntax Check     Dynamic   Walkthrough Desk Check     Unit Test Integration Test System Test  
  • 8. 16 Commandments of Software Testing     I. THE REALITIES 1. Thou cannot test everything. 2. Thou shalt let risk point you to the most important errors. 3. Thou shalt not confuse 1000 tests with testing 1000 functions. 4. Thou shalt hunt where the elephants drink – practice creative error guessing. II. THE ATTITUDES 5. Thou shalt not build on bad specifications and unclear interpretations. 6. Good tests need good code and good design. 7. Let thy enemy design and perform your tests. 8. Honor thy reference checks. III. THE TECHNOLOGIES 9. Thou shalt control changes. 10. Thou shalt commit to Regression Testing. 11. Test thy documentation. 12. Test for performance or perish. IV. THE CORNERSTONES 13. Accept running programs - not working programs (unit testing). 14. Bless off-the-shelf software more carefully than custom software. 15. Thou shalt cultivate and win management and user commitment and understanding. 16. Thou shalt measure progress - and know when to stop.    
  • 9. Documentation Deliverables for SDLC Life-Cycle Phase Documentation Preliminary Investigation
    • system requirement specification
    • preliminary resource requirement specification
    •  
    Analysis
    • detailed system requirement specification
    • detailed resource requirement specification
    •  
    Logical Design
    • logical DFD
    • logical ERD
    • state-transition diagrams          
    • l ogic analysis
    •  
    Physical Design
    • detailed physical component specification
    • implementation schedule
    • detailed feasibility analysis
    •  
    Implementation
    • system test specifications
    • system test reports
    • user documentation
    • release description
    • system administration documentation
    • system reference guide
    •