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Save the world: design for testability

Avatar for GDG Aracaju GDG Aracaju
February 07, 2015
Programming
59
1

Save the world: design for testability

Presentation by @lucasxas

Avatar for GDG Aracaju

GDG Aracaju

February 07, 2015

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Transcript

  1. design for testability Save the world Lucas Xavier @lucasxavier

  2. About me Lucas Xavier @lucasxavier • Lucas Xavier - Software

    Engineer for five years - Test Specialist, UFPE - Bsc in Information Systems, UFS - Nonsense humour - Game of Thrones - Rock!

  3. Agenda • Value proposition • What’s testability? • Best practices

    • Anti-patterns • Unit Testing and TDD • Hands-on! Lucas Xavier @lucasxavier

  4. Value proposition • Design + coding + debugging + testing

    • Certainties in life • Death • Taxes • Bugs • Early feedback Lucas Xavier @lucasxavier

  5. What’s testability? • Repeatable • Easy to Write • Easy

    to Understand • Fast Lucas Xavier @lucasxavier

  6. What’s testability? • Components: • Control • Visibility • Operability

    • Simplicity • Understandability • Suitability • Stability Lucas Xavier @lucasxavier

  7. Best practices • Set up and teardown • KISS •

    Loose coupling • Dependency injection • Elimination of globals • Clear code Lucas Xavier @lucasxavier

  8. Anti-patterns • Unclear execution paths • Train Wrecks • Dependencies

    between test cases • Testing precise timing or performance • All-knowing oracles • Slow running tests Lucas Xavier @lucasxavier

  9. Unit Testing and TDD • Unit Testing • Test Driven

    Development • Unit Testing is a component of TDD Lucas Xavier @lucasxavier

  10. Hands-on! Lucas Xavier @lucasxavier