Software Testing

Software Testing

1. Principle 1:

   • Presence of errors
   • NOT their absence

2. Principle 2:

   • Exhaustive testing is impossible!

3. Principle 3:

   • Test as early as possible

4. Principle 4:

   • Defect Clustering
     • Small number of classes contain most defects

5. Principle 5:

   • Pesticide Paradox
     • Use different test cases
     • Exercise different parts of code

6. Principle 6:

   • Testing is context-dependent
     • Safety-critical software
     • VS
     • E-Commerce software

7. Principle 7:

   • Finding errors does not help if system is unusable