Software Development: TDD

• Test-driven development
• principles
  • test first: do not write function until you have a unit test for it
  • do not write unit test more than necessary to fail
  • do not write code more than just enough to pass unit test
• 
• TDD overview
  • Plan
    • requirement and cut problem
  • Data define
    • write data structure problem need
  • Tests
    • write unit test
  • Code
    • write unit test for next function
    • code and modify until pass test, repeat with new functions
    • repeat
  • Complete
    • run it and show all testing pass