Software engineering 2

Software engineering 2

1. Templates

   • MVC template
     • Model
     • View
     • Controller
   • Why?
     • Because is necessary put on software, the quality that customer want, explicit or implicit
       • generic solution
     • less risk and less cost

2. Configuration Management

   • Why?
     • because the software grown up and is need control the changes made
   • Identify, organize and control
   • IN: Test Case, documentation, software parts

3. Test fundamentals

   • secure software against failure
   • the software is right?
   • Verify and validate
     • Verify: White Box
       • Detect useless code
       • implementation test
         • Control flow
           • instructions, decisions and ways
         • Date flow
           • relationship of variables and association
     • Validate: Black Box
       • specification test
       • Limit valor
       • State transition
       • case and effect
   • Hold quality
   • Exemple Test
     • Unit test
       • module per module
     • Integration test
       • combination of modules and integration
       • isolate the units for test
         • After pass in test of unit
         • bottom-up
           • drive
         • top-down
           • stub
         • Shake!
         • Big-Bang
         • Ouch! dependance?
           • better use a firewall
           • OR calculate dependence of units
       • locate failure in interface of units
     • validate test
       • specify
   • Regrassion Test
     • We change the software, and now?
     • Validate change made
     • AND test modification in other parts of software
     • Compare in and out of software
   • IF software is critical?
     • Is need failure injection
       • active
       • Change control flow
       • Change code
     • The software need still go on after "break"
       • Bank, Plane System ....

4. maintenance

   • The software evolves with time
     • complexity
       • Failure too!
     • Documantation
     • Test case
     • Others tests
     • Repare, Adaptation and Increase