Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Sign up for free
Menu
Search
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Pricing
Search
Sign in
Sign up for free
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
94
0
Share
Embed
Copy iframe code
Copy JS code
Copy link
Start on current slide
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
99
Elixir in Elixir
iamvery
1
170
A Less Complex Web with Ratchet & Jank
iamvery
0
390
Ratchet & Jank
iamvery
0
210
Elixir in Elixir
iamvery
6
1.2k
Rubyist Does Swift
iamvery
0
110
Swift Introduction
iamvery
0
340
Data Integrity
iamvery
0
120
Pairing with tmux
iamvery
2
260
Other Decks in Programming
See All in Programming
Everything will be SERVERLESS — 信じて運用した10年の経験値 / Everything Will be Serverless — Lessons Learned from 10 Years of Operational Experience
seike460
PRO
1
1k
ジョジョの世界をXRで再現する
mofurune
0
160
【加筆修正版】Laravel のアプリケーションをどこにデプロイするか #phpcon_ehime
akase244
0
150
Herb in Rails 8.2: Your ERB views, now HTML-aware @ Rails World 2026, Austin, Texas
marcoroth
0
210
Embedded Swiftで作る自作USBデバイス によるiOSデバイスの自動テスト / iOSDC Japan 2026 glassfiber
glassfiber
0
340
re:Inventに行く前に知っておきたい現地参加のノウハウ
nokomoro3
0
410
外から家のPCの電源入れたい!をPHPで解決する
kawashimo0
1
130
Agentic Software Factoryに、すごく賢いIF文を。 / super smart IF statement into the Agentic Software Factory.
rkaga
8
2.1k
パーソナライズPodcastを作った話
repunit11
0
140
IBM Bob でAI駆動開発『QC-Playbook』
ichirokano2
0
110
月間100万人のサービス刷新で、 技術選定をHonoに振り切った話
yutobara
8
6.4k
ChromeでローカルLLM
ryu1013
0
120
Featured
See All Featured
Stop Working from a Prison Cell
hatefulcrawdad
274
21k
Facilitating Awesome Meetings
lara
57
7.2k
Mozcon NYC 2025: Stop Losing SEO Traffic
samtorres
1
570
Faster Mobile Websites
deanohume
310
32k
Writing Fast Ruby
sferik
630
63k
Navigating Weather and Climate Data
rabernat
0
550
Introduction to Domain-Driven Design and Collaborative software design
baasie
1
1k
How to Build an AI Search Optimization Roadmap - Criteria and Steps to Take #SEOIRL
aleyda
1
2.2k
Why Your Marketing Sucks and What You Can Do About It - Sophie Logan
marketingsoph
0
430
AI in Enterprises - Java and Open Source to the Rescue
ivargrimstad
0
1.5k
AI: The stuff that nobody shows you
jnunemaker
PRO
10
1.2k
Lessons Learnt from Crawling 1000+ Websites
charlesmeaden
PRO
1
1.6k
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 ♥