Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Feature. Tests. Implementation.
Search
Sponsored
·
Ship Features Fearlessly
Turn features on and off without deploys. Used by thousands of Ruby developers.
→
Jay Hayes
April 26, 2017
Programming
71
0
Share
Feature. Tests. Implementation.
Slides to accompany
https://github.com/iamvery/testing-workshop/releases/tag/v1
Jay Hayes
April 26, 2017
More Decks by Jay Hayes
See All by Jay Hayes
Build Elixir Phoenix
iamvery
0
84
Elixir in Elixir
iamvery
1
160
A Less Complex Web with Ratchet & Jank
iamvery
0
370
Ratchet & Jank
iamvery
0
200
Elixir in Elixir
iamvery
6
1.2k
Rubyist Does Swift
iamvery
0
99
Swift Introduction
iamvery
0
320
Data Integrity
iamvery
0
110
Pairing with tmux
iamvery
2
230
Other Decks in Programming
See All in Programming
色即是空、空即是色、データサイエンス
kamoneggi
1
210
Lemonade + Foundry Toolkit でお手軽アプリ開発
seosoft
1
230
JavaDoc 再入門
nagise
0
210
Make SRE Operations Easier with Azure SRE Agent
kkamegawa
0
1.9k
生成AI時代にこそ効くGo | Why Go Works in the Age of Generative AI
mom0tomo
8
3k
運用エージェントは "作る" から "育てる" へ - 記憶と自己進化の3層設計パターン / self-evolving-agents-three-layer-agent-design
gawa
12
3.3k
Moments When Things Go Wrong
aurimas
3
130
新規プロダクトを高速で生み出すハーネスエンジニアリング
seanchas116
15
7.4k
脅威をエンジニアリングの糧にして――現場編 / Turning Threats into Engineering Fuel — Field Edition
nrslib
0
220
Technical Debt: Understanding it Rightly, Engaging it Rightly #LaravelLiveJP
shogogg
0
180
oxlintはeslint/typescript-eslintを置き換えられるのか
shomafujita
2
290
プラグインで拡張される Context をtype-safe にする難しさと設計判断
kazupon
2
460
Featured
See All Featured
Mozcon NYC 2025: Stop Losing SEO Traffic
samtorres
1
240
Embracing the Ebb and Flow
colly
88
5.1k
Sam Torres - BigQuery for SEOs
techseoconnect
PRO
0
280
From Legacy to Launchpad: Building Startup-Ready Communities
dugsong
0
220
Side Projects
sachag
455
43k
DBのスキルで生き残る技術 - AI時代におけるテーブル設計の勘所
soudai
PRO
65
55k
Facilitating Awesome Meetings
lara
57
6.9k
Understanding Cognitive Biases in Performance Measurement
bluesmoon
32
2.9k
[SF Ruby Conf 2025] Rails X
palkan
2
1.1k
Art, The Web, and Tiny UX
lynnandtonic
304
21k
sira's awesome portfolio website redesign presentation
elsirapls
0
270
A Tale of Four Properties
chriscoyier
163
24k
Transcript
@iamvery ♥ FEATURE. TESTS. IMPL.
@iamvery ♥ MATERIALS bit.ly/rc17tddv1 ✨ ✨ TDD: From Feature to
Tests to Implementation bit.ly/rc17tddlive
@iamvery ♥ FEATURE. TESTS. IMPL.
@iamvery ♥ bit.ly/rc17tddv1
@iamvery ♥ bit.ly/rc17tddv1 ✍
@iamvery ♥ bit.ly/rc17tddv1
@iamvery ♥ bit.ly/rc17tddv1
Jay Hayes https://iamvery.com — @iamvery
@iamvery ♥
None
We develop.
We teach.
We write.
@iamvery ♥ bit.ly/rc17tddv1 Why write tests?
@iamvery ♥ bit.ly/rc17tddv1 DEFINE DONE
@iamvery ♥ bit.ly/rc17tddv1 CONFI DENCE
@iamvery ♥ bit.ly/rc17tddv1 What types of tests are there?
@iamvery ♥ bit.ly/rc17tddv1 acceptance unit model system smoke integration load
@iamvery ♥ bit.ly/rc17tddv1 INTEGRATED. ISOLATED.
@iamvery ♥ bit.ly/rc17tddv1 INTEGRATED. Plays well with others.
@iamvery ♥ bit.ly/rc17tddv1 VERIFY BEHAVIOR
@iamvery ♥ bit.ly/rc17tddv1 SYSTEM
@iamvery ♥ bit.ly/rc17tddv1 ISOLATED. Lonely, like a wolf.
@iamvery ♥ bit.ly/rc17tddv1 DRIVE DESIGN
@iamvery ♥ bit.ly/rc17tddv1 Other names define purpose.
@iamvery ♥ bit.ly/rc17tddv1 Acceptance Tests acceptable behavior. “feature”
@iamvery ♥ bit.ly/rc17tddv1 Load Test system resilience. “pressure”
@iamvery ♥ bit.ly/rc17tddv1 Smoke Low coverage, high level “sanity”
@iamvery ♥ bit.ly/rc17tddv1 ETC.
@iamvery ♥ bit.ly/rc17tddv1 THEY’RE ALL INTEGRATED
@iamvery ♥ bit.ly/rc17tddv1 What about paradigms?
@iamvery ♥ bit.ly/rc17tddv1 TDD
@iamvery ♥ bit.ly/rc17tddv1 BDD
@iamvery ♥ bit.ly/rc17tddv1 ADD
@iamvery ♥ bit.ly/rc17tddv1 TBH
@iamvery ♥ bit.ly/rc17tddv1 IDC
@iamvery ♥ bit.ly/rc17tddv1 Methodology.
@iamvery ♥ bit.ly/rc17tddv1 Documentation.
@iamvery ♥ bit.ly/rc17tddv1 Communicate intent.
@iamvery ♥ bit.ly/rc17tddv1 You are here
@iamvery ♥ bit.ly/rc17tddv1 Ok, tell me what to do.
@iamvery ♥ bit.ly/rc17tddv1 STEP 1
@iamvery ♥ bit.ly/rc17tddv1 Acceptance ✍
@iamvery ♥ bit.ly/rc17tddv1 Integrated.
@iamvery ♥ bit.ly/rc17tddv1 User perspective.
@iamvery ♥ bit.ly/rc17tddv1 Make stuff up.
@iamvery ♥ bit.ly/rc17tddv1 Write the test you want.
@iamvery ♥ bit.ly/rc17tddv1 Last test to pass.
@iamvery ♥ bit.ly/rc17tddv1 STEP 2
@iamvery ♥ bit.ly/rc17tddv1 Run it.
@iamvery ♥ bit.ly/rc17tddv1 Listen.
@iamvery ♥ bit.ly/rc17tddv1 STEP 3
@iamvery ♥ bit.ly/rc17tddv1 Try to make it happy.
@iamvery ♥ bit.ly/rc17tddv1 Zoom in.
@iamvery ♥ bit.ly/rc17tddv1 Build units♻
@iamvery ♥ bit.ly/rc17tddv1 Isolated.
@iamvery ♥ bit.ly/rc17tddv1 GOTO 2
@iamvery ♥ bit.ly/rc17tddv1 …
@iamvery ♥ bit.ly/rc17tddv1 ✅
@iamvery ♥ bit.ly/rc17tddv1 BEWARE
@iamvery ♥ bit.ly/rc17tddv1 “NOOOPE”
@iamvery ♥ https://github.com/testdouble/contributing-tests/wiki/Testing-Pyramid
@iamvery ♥ bit.ly/rc17tddv1 TL;DR coupling
@iamvery ♥ bit.ly/rc17tddv1 OVER TESTING
@iamvery ♥ bit.ly/rc17tddv1
@iamvery ♥ bit.ly/rc17tddv1 SUPER POWERS +
@iamvery ♥ bit.ly/rc17tddv1 MORE PRODUCTIVE
@iamvery ♥ bit.ly/rc17tddv1 EASIER N THE BRAIN
@iamvery ♥ bit.ly/rc17tddv1 DEMO
QUEST IONS? @iamvery ♥ bit.ly/rc17tddv1
/ YOUR TURN @iamvery ♥ bit.ly/rc17tddv1
@iamvery ♥ bit.ly/rc17tddv1 YOUR FIRST TEST
QUEST IONS? @iamvery ♥ bit.ly/rc17tddv1
/ YOUR TURN @iamvery ♥ bit.ly/rc17tddv1
@iamvery ♥ bit.ly/rc17tddv1 NEW INTERFACE
QUEST IONS? @iamvery ♥ bit.ly/rc17tddv1
/ YOUR TURN @iamvery ♥ bit.ly/rc17tddv1
@iamvery ♥ bit.ly/rc17tddv1 GET REAL
QUEST IONS? @iamvery ♥ bit.ly/rc17tddv1
/ YOUR TURN @iamvery ♥ bit.ly/rc17tddv1
@iamvery ♥ bit.ly/rc17tddv1 WRAP IT
QUEST IONS? @iamvery ♥ bit.ly/rc17tddv1
/ YOUR TURN @iamvery ♥ bit.ly/rc17tddv1
@iamvery ♥ bit.ly/rc17tddv1 FAKE IT
QUEST IONS? @iamvery ♥ bit.ly/rc17tddv1
/ YOUR TURN @iamvery ♥ bit.ly/rc17tddv1
@iamvery ♥ bit.ly/rc17tddv1 INJECT IT
QUEST IONS? @iamvery ♥ bit.ly/rc17tddv1
@iamvery ♥ bit.ly/rc17tddv1 BONUS
@iamvery ♥