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

9 ways to test your spaghetti code

Sponsored · Ship Features Fearlessly Turn features on and off without deploys. Used by thousands of Ruby developers. →
Avatar for Mads Opheim Mads Opheim
May 30, 2019
Technology
0
47

9 ways to test your spaghetti code

From Nordic Testing Days 2019

Avatar for Mads Opheim

Mads Opheim

May 30, 2019
Tweet

More Decks by Mads Opheim

See All by Mads Opheim
Modern Java App Development in the Cloud
Avatar for Mads Opheim madsopheim
0
54
IoT Powered by MicroProfile - JFuture
Avatar for Mads Opheim madsopheim
0
600
IoT Powered by MicroProfile - MakeIT
Avatar for Mads Opheim madsopheim
0
36
IoT powered by MicroProfile
Avatar for Mads Opheim madsopheim
0
37
9 ways to test your spaghetti code
Avatar for Mads Opheim madsopheim
0
130
Domain driven design in the real world
Avatar for Mads Opheim madsopheim
0
400
Make your tests tell the story of your domain
Avatar for Mads Opheim madsopheim
0
94
IoT powered by MicroProfile
Avatar for Mads Opheim madsopheim
0
51
9_ways_to_test_your_spaghetti_code_-_Devoxx_Ukraine.pdf
Avatar for Mads Opheim madsopheim
0
65

Other Decks in Technology

See All in Technology
「ヒットする」＋「近い」を同時にかなえるスマートサジェストの作り方.pdf
Avatar for なかしょ nakasho
0
110
Windows ネットワークを再確認する
Avatar for Murachi Akira murachiakira
PRO
0
260
Exadata Database Service on Dedicated Infrastructure(ExaDB-D) UI スクリーン・キャプチャ集
Avatar for oracle4engineer oracle4engineer
PRO
7
7.1k
オンプレとGoogle Cloudを安全に繋ぐための、セキュア通信の勘所
Avatar for Yuta Ozaki waiwai2111
3
1.1k
ブラックボックス観測に基づくAI支援のプロトコルのリバースエンジニアリングと再現 ~AIを用いたリバースエンジニアリング~ @ SECCON 14 電脳会議 / Reverse Engineering and Reproduction of an AI-Assisted Protocol Based on Black-Box Observation @ SECCON 14 DENNO-KAIGI
Avatar for chibiegg chibiegg
0
140
Data Hubグループ 紹介資料
Avatar for Sansan, Inc. sansan33
PRO
0
2.8k
大規模サービスにおける レガシーコードからReactへの移行
Avatar for MagicPod magicpod
1
120
技術的負債の泥沼から組織を救う3つの転換点
Avatar for nwiizo nwiizo
5
1.2k
どこで打鍵するのが良い？ IaCの実行基盤選定について
Avatar for NRI Netcom nrinetcom
PRO
2
160
Introduction to Bill One Development Engineer
Avatar for Sansan, Inc. sansan33
PRO
0
380
クラウド時代における一時権限取得
Avatar for krrrr38 krrrr38
1
150
OSSで構築するIT基盤管理実践事例: NetBox・Snipe-IT・FreeRADIUS+PrivacyIDEA / Practical Case Studies of IT Infrastructure Management Using OSS
Avatar for NTT docomo Business nttcom
0
190

Featured

See All Featured
Prompt Engineering for Job Search
Avatar for Mfonobong Umondia mfonobong
0
180
Practical Tips for Bootstrapping Information Extraction Pipelines
Avatar for Matthew Honnibal honnibal
25
1.8k
Making the Leap to Tech Lead
Avatar for Ryan Cromwell cromwellryan
135
9.8k
A Guide to Academic Writing Using Generative AI - A Workshop
Avatar for Kenji Saito ks91
PRO
0
230
Impact Scores and Hybrid Strategies: The future of link building
Avatar for Tamara Novitovic tamaranovitovic
0
220
Imperfection Machines: The Place of Print at Facebook
Avatar for Scott Boms scottboms
269
14k
Applied NLP in the Age of Generative AI
Avatar for Ines Montani inesmontani
PRO
4
2.1k
Breaking role norms: Why Content Design is so much more than writing copy - Taylor Woolridge
Avatar for UX Y'all uxyall
0
190
jQuery: Nuts, Bolts and Bling
Avatar for Doug Neiner dougneiner
65
8.4k
Making Projects Easy
Avatar for Brett Harned brettharned
120
6.6k
Fashionably flexible responsive web design (full day workshop)
Avatar for Andy Clarke malarkey
408
66k
How To Stay Up To Date on Web Technology
Avatar for Chris Coyier chriscoyier
790
250k

Transcript

  1. Nordic Testing Days 9 ways to test your spaghetti code

    Mads Opheim @MadsOpheim 1

  2. Tere! I’m Mads. I’m a developer 2

  3. Spaghetti code? 3

  4. The 9 ways 4

  5. 5 1. Test all or Test small

  6. 6 2. Set your dependencies

  7. 7

  8. Singletons 8

  9. 3. Package-protect problematic parts 9

  10. Tools for your toolbox 10

  11. 4. Do simple refactorings to get your code under test

    11

  12. In general: untangling and looking at one part at a

    time 12

  13. You’re not as smart as you think you are 13

  14. Well-designed code is testable code 14

  15. 15 5. Help your team

  16. You’ll forget things 16

  17. 6. Run your tests - and care 17

  18. 7. Feature toggles 18

  19. 8. One mile at a time 19

  20. Refactor in separate commits 20

  21. 9. Test-driven development 21

  22. Test-driven spaghetti 22

  23. TDD on legacy code in practice 23

  24. Tip 10, 11 and onwards 24

  25. 25 The Deadline For Kunngjøring Is Four Weeks()

  26. 26 Properties For Namsmann Mainly Follow The Same Rules as

    Hovedstevnevitne()

  27. You’ll do stupid things - and that’s ok 27

  28. Be consistent 28

  29. Give me more @lisacrispin, @lisihocke, @techgirl1908, @maaretp... 29

  30. Key takeaways 30 1. Good code design improves testability 2.

    TDD on spaghetti code: TDD + test spaghetti code 3. Write tests for you legacy code - you can do it!

  31. Thank you! @MadsOpheim [email protected] 31