TESTING

TESTING

1. Testing principles

   • Presence of bugs
   • Exhaustive testing is impossible
   • Early testing
   • Defect clustering
   • Testing is context dependent
   • Absence of errors fallacy
   • Pesticide paradox

2. Fundamentals/ Principles&Scopes

   • Testing and risk
     • greater risk implies more testing
   • Error-defect-failure
     • testing contributes to avoidance and rectification
     • begin testing at the beginnning of the development process
   • Testing and quality
     • Verification
       • confirms the software works
     • Validation
       • software meets requirements
     • system meets its users requirements
     • ensure functional and non-functional requirements are examined before system enters service

3. Fundamental test process

   • Test planning and control
     • what is going to be tested
     • who will test
     • define test completion criteria
     • control the activities
     • adjust plans to meet targets
   • Test analysis and design
     • test conditions (what to test)
     • combine test conditions into test cases
     • predicting how software under test should behave
     • reviewing conditions, architecture, interface specifications
     • analyzing test items; specification, behaviour and structure to identify test conditions
     • designing the tests assigning priority
   • Test implementation and execution
     • running tests
     • checking the test environment
     • Retesting
     • Regression
     • developing and prioritizing test cases; writing test procedures
     • reporting discrepancies
     • comparing actual results with expected results
   • Evaluation exit criteria
     • deffined during test planning
     • determine if more tests are needed
     • writing up reslults
   • test closure activities
     • reports are written
     • defects closed