snapshot testing (laraconus)

Transcript

1. A practical intro to snapshot testing
2. Pronouncing Dutch Michael
 3/10 Jacob
 1/10
3. Pronouncing Dutch Michael
 9/10 Jacob
 9/10
4. Drake
5. Frake
6. Pronouncing Dutch: Spatie Spa Sea
7. LET’S TALK SNAPSHOT TESTING
8. A file on disk, let’s call in snapshot Test succeeds if output matches snapshot If not, test will fail What?
9. Old name: characterization testing Popularized by Facebook Jest Testing interfaces Where does it come from?
10. https://github.com/spatie/phpunit-snapshot-assertions assertMatchesSnapshot assertMatchesJsonSnapshot assertMatchesXmlSnapshot How can we do it in PHP?
11. DEMO
12. WRAPPING UP
13. Advantages Very easy to get started with Can be used to validate complex output Easily update all the tests in one go
14. Disadvantages Brittle Hard to pinpoint exact point of failure Bugs can be easily written in the snapshots
15. 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 Interesting links
16. Thank you! https://speakerdeck.com/freekmurze/snapshot-testing-laraconus https://spatie.be/opensource https://murze.be https://murze.be/newsletter/
17. QUESTIONS?