Quality in Software

Quality in Software

1. It needs to work

2. Don't create new problems

   • Most problems are caused by simple programming mistakes

3. Allow to keep working

4. Concerns

   • Bug prevention
     • The more bugs we allow, the more slow we go
   • Bug detection
   • User satisfaction
   • Software quality
   • Performance
   • Confidence

5. Need to test all the f** time

   • Test Driven Development (TDD)
     • Is about design
     • Makes bad programmers less bad
     • Makes good programmers better
     • Makes great programmers greater
   • Unit test
     • Is about testing

6. Code quality needed

   • Code is
     • Fragile
       • Tiny mistakes -> big impacts
       • Error detection protocol is needed
     • Complex
     • Expressive
   • Impacts
     • Works
     • Easy to read
     • Testable
     • Easy to change
     • Simple
     • Eficient
   • Attributes
     • Modular
     • Loosely coupled
     • Cohesive
     • Separation of concerns
     • Information hiding