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
snapshot testing (laraconeu)
Search
Freek Van der Herten
August 29, 2017
Programming
0
130
snapshot testing (laraconeu)
Freek Van der Herten
August 29, 2017
Tweet
Share
More Decks by Freek Van der Herten
See All by Freek Van der Herten
Uncharted packages (Laravel Live Denmark)
freekmurze
0
180
I shall define this only once
freekmurze
0
380
An Introduction to Snapshot testing
freekmurze
0
460
Event Sourcing In Laravel
freekmurze
0
230
Building a realtime dashboard with Laravel Livewire (PHPKonf)
freekmurze
0
770
A tour behind the scenes of Oh Dear (PHP Benelux)
freekmurze
2
820
A practical look at multitenancy in Laravel
freekmurze
1
330
A practical look at multitenancy in Laravel (Laracon US)
freekmurze
0
700
Highlights Flare codebase (Laracon online)
freekmurze
0
460
Other Decks in Programming
See All in Programming
Jakarta EE meets AI
ivargrimstad
0
600
Djangoにおける複数ユーザー種別認証の設計アプローチ@DjangoCongress JP 2025
delhi09
PRO
4
500
たのしいSocketのしくみ / Socket Under a Microscope
coe401_
8
1.4k
Serverless Rust: Your Low-Risk Entry Point to Rust in Production (and the benefits are huge)
lmammino
1
160
TCAを用いたAmebaのリアーキテクチャ
dazy
0
220
SwiftUI Viewの責務分離
elmetal
PRO
2
280
Kotlinの開発でも AIをいい感じに使いたい / Making the Most of AI in Kotlin Development
kohii00
5
1.8k
自力でTTSモデルを作った話
zgock999
0
120
iOSでQRコード生成奮闘記
ktcryomm
2
120
CloudRun, Spanner に対する負荷試験の反省と オブザーバビリティによるアプローチ
oyasumipants
1
150
クックパッド検索システム統合/Cookpad Search System Consolidation
giga811
0
130
Honoをフロントエンドで使う 3つのやり方
yusukebe
7
3.6k
Featured
See All Featured
Speed Design
sergeychernyshev
27
810
ReactJS: Keep Simple. Everything can be a component!
pedronauck
666
120k
How STYLIGHT went responsive
nonsquared
99
5.4k
Building a Scalable Design System with Sketch
lauravandoore
461
33k
Build The Right Thing And Hit Your Dates
maggiecrowley
34
2.5k
KATA
mclloyd
29
14k
[RailsConf 2023] Rails as a piece of cake
palkan
53
5.3k
Designing for Performance
lara
605
68k
Optimizing for Happiness
mojombo
377
70k
Music & Morning Musume
bryan
46
6.4k
RailsConf 2023
tenderlove
29
1k
Rebuilding a faster, lazier Slack
samanthasiow
80
8.9k
Transcript
A practical intro to snapshot testing and PHPUnit-watcher
About me Freek Van der Herten Partner & developer at
SPATIE Blogging at https://murze.be https://murze.be/newsletter
OPEN SOURCE SOFTWARE
https://spatie.be/en/opensource/laravel
Open source software ± 160 public repositories on GitHub August
2016: ± 800 000 downloads August 2017: ± 5 000 000 downloads ± 500 000 downloads a month
LET’S TALK SNAPSHOT TESTING
A file on disk, let’s call in snapshot Test succeeds
if output matches snapshot If not, test will fail What?
Another name: characterization testing Popularized by Facebook Jest Testing interfaces
Where does it come from?
https://github.com/spatie/phpunit-snapshot-assertions assertMatchesSnapshot assertMatchesJsonSnapshot assertMatchesXmlSnapshot How can we do it in
PHP?
DEMO
WRAPPING UP
Advantages Very easy to get started with Can be used
to validate complex output Easily update all the tests in one go
Disadvantages Brittle Hard to pinpoint exact point of failure Bugs
can be easily written in the snapshots
https://github.com/spatie/phpunit-snapshot-assertions https://sebastiandedeyne.com/posts/2017/a-package-for-snapshot- testing-in-phpunit https://murze.be/2017/04/practical-introduction-snapshot-testing/ https://www.sitepoint.com/snapshot-testing-viable-php/ https://facebook.github.io/jest/docs/snapshot-testing.html https://github.com/spatie/phpunit-watcher Interesting links
Thank you! https://speakerdeck.com/freekmurze/snapshot-testing-laraconeu https://spatie.be/opensource https://murze.be https://murze.be/newsletter/
QUESTIONS?