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QUALITY & TESTING (QUALITY IN S/W (PROBS POOR QUALITY (PREVENT PROBS…
QUALITY & TESTING
QUALITY IN S/W
PROBS POOR QUALITY
NOT THE ABOVE + underused, difficult amend/enhance
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3. Usability
(Simple to use, understand + can be used effectively)
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4. Degree of excellence
(exhibits elements of good build: maintainability, flexibility, expandability, portability)
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Q.A. Concerned with std's, reviewing proc. + educating into better ways of designing + developing products
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SYSTEM TESTING
- Usability - ease of use for user
- Prepares for large scale integration
- not relevant to your prototype
- Stability & Consistency - has been achieved
- The tester tries make system fail by performing unusual paths and entering incorrect data
- Systems should cope with this by displaying appropriate error messages
- Business functionality - relevant & correct
- Checked against documentation
UNIT TESTING
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Interfaces work correctly, data flows correctly in and out of prog
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NEED FOR QUALITY
AVOID:
- 50% defects found before coding
- money/effort fixing
- Add/amend func. that should have existed
- Inaccuracy of delivered sys undermines users faith in IS
USER ACCEPTANCE TESTING
PROBLEMS
- Fails to meet defined business requirements
- Usability Problems (restructuring the user interface or amending screen messages)
- Compatibility and performance problems