Video: High-Quality Code - Test-driven Development (TDD) (Bulgarian)

Topics covered:

• Unit Testing Approaches
• Code and Test Approach
• Test-driven Development steps
• Why TDD?
• Myths and Misconceptions

Video (in Bulgarian)

Presentation Content

Unit Testing Approaches

• “Code First” (code and test) approach
  • Classical approach
• “Tests First” approach
  • Test-driven development (TDD)

Code and Test Approach

• Code and Test approach steps
  1. Write code
  2. Write unit test
  3. Run and succeed
  4. Time flow

Test-driven Development steps

1. Pick а test
2. Compile and fail
3. Write enough code to compile
4. Run test and fail
5. Write code to pass test
6. Create a tests list
7. Time flow
8. Write test
9. Remove duplication

Why TDD?

• TDD helps finding design issues early
  • Avoids rework
• Writing code to satisfy a test is a focused activity
  • Less chance of error
• Tests will be more comprehensive than when written after code

Myths and Misconceptions

• You create a 100% regression test suite
• The unit tests form 100% of your design specification
• You only need to unit test
• TDD is sufficient for testing
• TDD doesn’t scale (partially true)
  • Your test suite takes too long to run
  • Not all developers know how to test
  • Everyone might not be taking a TDD approach