Test-Driven Development

Test-Driven Development

1. Importance of Testing Software

   • Validation
   • Verification
   • Bug costs

2. Approaches to Verification

   • Dynamic
   • Static
   • Formal

3. Testing Techniques

   • Opaque box testing
   • Clear box Testing

4. TDD Cycle

   • Write new code
   • Run Tests
   • Refactor
     • Why Refactor?
       • Change in requirements
       • Programmer sloppiness
       • Design improvment
     • Types of Refactoring
       • Rename
       • Consolidate Conditional
       • Extract method/class
       • Collapse hierarchy
   • Write new test cases

5. First Task

   • Code Smells
     • Causes
       • Technical Debt
       • Rushed design
     • OO Abusers
       • Switch Statements
       • Refused Bequest
     • Bloaters
       • Large classes
       • Long methods
       • Data clumps
       • Long parameter lists
     • Dispensables
       • Duplicated code
       • Lazy classes
       • Data classes
     • Change Preventers
       • Shotgun Surgery
       • Divergent Change
     • Couplers
       • Feature envy
       • Inappropriate intimacy
       • Middle Man