Treat yourself - a tale about dog training and test-driven develompent

Slides to my talk at RuhrJS 2019.
You can find the code example on github: https://github.com/programmiri/examples-talk-tdd-dogtraining

Transcript

1. Treat yourself A TALE ABOUT DOG TRAINING AND TEST DRIVEN DEVELOPMENT
2. HI! !
3. I ! TESTING Image src: https://www.youtube.com/watch?v=dQw4w9WgXcQ
4. MFW SOMEONE SAYS THEY don't like testing Image src: https://giphy.com/gifs/reaction-dogs-texting-RGK9jWz0t89Hy
5. THE PERFECT JOB DOES NOT EXI—
6. I WAS A DOG TRAINER
8. Image src: https://giphy.com/gifs/truthorange-dog-surprised-wtf-xThuW7icYBlQZxjnyg
9. SO... HOW TO TRAIN A DOG, MIRJAM?
10. SO... HOW TO TRAIN A DOG, MIRJAM? Original image: https://www.flickr.com/photos/lovine/5433988749
11. Teach your dog WHAT TO DO Video src: https://giphy.com/gifs/cat-dog-trick-2J2XDIiYBFIu4
12. Dogs do things when IT'S WORTH IT Image src: https://giphy.com/gifs/happiness-9fuvOqZ8tbZOU
13. WORK WITH your dogs brain Video src: https://www.youtube.com/watch?v=EbJ5J5SE6ws
14. Always have a POSITIVE GOAL Image src: https://giphy.com/gifs/cute-aww-eyebleach-2yqyKvK47qaea8IdnV
15. Take the SMALLEST STEPS Image src: https://i.imgur.com/REevAsi.gifv
16. BACK TO CODE Image src: https://i.imgur.com/REevAsi.gifv
17. Test Driven DEVELOPMENT
18. TEST DRIVEN DEVELOPMENT - what ‣Extreme Programming (XP) ‣Kent Beck, 2003 ‣Tests first
19. TEST DRIVEN DEVELOPMENT - how Red - Green - Refactor Image src: https://giphy.com/gifs/peteandpete-season-3-the-adventures-of-pete-and-3o7Z4tNIWOQWTlfGN2
20. TDD CYCLE ‣ ❌ Write a test. ‣ ❌ That test fails - obviously ‣ ❌ Write code that makes the test pass ‣ ✅ Test pass! ‣ # Refactor Rinse and repeat! Image src: https://giphy.com/gifs/girl-yeah-wash-JS88XIgg7laNO
21. LET'S WRITE SOME ✨ tests
22. DOG TRAINING SIMULATOR TASK Program to show others how to train a specific behavior to a dog.
23. DOG TRAINING SIMULATOR USER STORY I have a dog and I want to teach this dog the behavior "Touch", using positive reinforcement as a technique.
24. DOG TRAINING SIMULATOR INITIAL SITUATION aka: Requirements ‣no past no conditioning ‣rewarding, neutral and punishing consequences ‣visible reactions to consequences
25. DOG TRAINING SIMULATOR MY TRAINING WILL BE SUCCESSFUL WHEN... aka: Acceptance Criteria ‣When I say "Touch" ‣and hold two fingers so my dog can access them, ‣my dog comes immediately and with joyful body language to me ‣and presses its nose the two fingers shortly
26. LET'S THINK ABOUT THIS Image src: https://giphy.com/gifs/dog-computer-ChpOyeacGmpQk
27. ❌ RED ✅ GREEN ! REFACTOR
34. That's the real Ruby helping with slides.
38. !"#
43. TAKE LITTLE STEPS Image src: https://giphy.com/gifs/SignatureEntertainmentUK-cute-doggo-pick-of-the-litter- Ri2MFR3FVDX5hmNlqD
57. !
65. !
78. Nice!
96. SUMMARY
97. WHAT - imho - TDD IS ABOUT ‣TDD is not a strategy for tests, it's a strategy for design. ‣It helps to stay focused and keep things simple. ‣It makes changes easier and refactoring safer. ‣You can work in quick iterations and get in a very motivating feedback loop.
98. GET INTO TDD HOW TO GET STARTED ‣ start with small problems ‣ be open and creative Image src: https://giphy.com/gifs/cute-aww-eyebleach-xFnAObsU5nMrUUC3HX
99. GET INTO TDD HOW TO GET STARTED ‣ start with small problems ‣ be open and creative ‣ don't be dogmatic Image src: https://www.youtube.com/watch?v=dQw4w9WgXcQ
100. THANKS A LawhoooooOT