Upgrade to Pro — share decks privately, control downloads, hide ads and more …

Writing testable code

Avatar for Rodrigo Boniatti Rodrigo Boniatti
November 30, 2019
Programming
0
54

Writing testable code

Avatar for Rodrigo Boniatti

Rodrigo Boniatti

November 30, 2019
Tweet

More Decks by Rodrigo Boniatti

See All by Rodrigo Boniatti
The pillars of integration
Avatar for Rodrigo Boniatti boniatti
0
66
Designing and building software with Ruby on Rails
Avatar for Rodrigo Boniatti boniatti
0
47
Mobile development with React Native
Avatar for Rodrigo Boniatti boniatti
1
3.5k

Other Decks in Programming

See All in Programming
オンコール⼊⾨〜ページャーが鳴る前に、あなたが備えられること〜 / Before The Pager Rings
Avatar for Yuuki Takahashi yktakaha4
2
1.1k
PHPカンファレンス関西2025　基調講演
Avatar for SUGIMOTO Kei sugimotokei
5
1k
中級グラフィックス入門～効率的なメッシュレット描画～
Avatar for Pocol projectasura
3
1.7k
コーディングエージェント概観(2025/07)
Avatar for Itsuki itsuki_t88
0
440
PHPUnitの限界をPlaywrightで補完するテストアプローチ
Avatar for yuzneri yuzneri
0
350
AI Ramen Fight
Avatar for Yusuke Wada yusukebe
0
120
React 使いじゃなくても知っておきたい教養としての React
Avatar for Yuka O’oka oukayuka
13
1.7k
バイブスあるコーディングで ~PHP~ 便利ツールをつくるプラクティス
Avatar for uzulla uzulla
1
300
Reactの歴史を振り返る
Avatar for つちのこ tutinoko
1
140
20250708_JAWS_opscdk
Avatar for Takuya Yonezawa takuyay0ne
2
150
階層化自動テストで開発に機動力を
Avatar for ICKX ickx
1
440
Bedrock AgentCore ObservabilityによるAIエージェントの運用
Avatar for matsukada licux
8
360

Featured

See All Featured
Creating an realtime collaboration tool: Agile Flush - .NET Oxford
Avatar for Marc Duiker marcduiker
30
2.2k
Evolution of real-time – Irina Nazarova, EuRuKo, 2024
Avatar for Irina Nazarova irinanazarova
8
850
Product Roadmaps are Hard
Avatar for C. Todd Lombardo iamctodd
PRO
54
11k
Learning to Love Humans: Emotional Interface Design
Avatar for Aarron Walter aarron
273
40k
Stop Working from a Prison Cell
Avatar for Chris Michel hatefulcrawdad
271
21k
VelocityConf: Rendering Performance Case Studies
Avatar for Addy Osmani addyosmani
332
24k
Balancing Empowerment & Direction
Avatar for Lara Hogan lara
1
510
Put a Button on it: Removing Barriers to Going Fast.
Avatar for kastner kastner
60
3.9k
Testing 201, or: Great Expectations
Avatar for Joseph Mastey jmmastey
43
7.6k
Building Applications with DynamoDB
Avatar for Matt Wood mza
95
6.5k
Faster Mobile Websites
Avatar for Dean Hume deanohume
308
31k
Connecting the Dots Between Site Speed, User Experience & Your Business [WebExpo 2025]
Avatar for Tammy Everts tammyeverts
8
390

Transcript

  1. Writing testable code

  2. Rodrigo Boniatti Developer at Codeminer 42 @boniattirodrigo rodrigoboniatti.com

  3. Conditionals

  4. None

  5. Smell

  6. None
  7. None

  8. Refactored

  9. None
  10. None

  11. Conditionals • Smell: • High cyclomatic complexity score; • How

    to solve? • Replace Conditional with Polymorphism;

  12. Global state

  13. Smell

  14. None

  15. Refactored

  16. None

  17. Global state • Smell: • Coupling; • How to solve?

    • Dependency injection;

  18. Life cycle events

  19. Smell

  20. None

  21. Refactored

  22. None

  23. Life cycle events • Smell: • Hide code behavior; •

    No execution order; • How to solve? • Single flow;

  24. Principles of testing

  25. Principles of testing • Test in isolation; • A lot

    of setup == smell; • Hard to test == smell;

  26. Questions?

  27. Thank you Code examples: https://github.com/boniattirodrigo/writing-testable-code