Posts tagged with snapshot
Last year, Laracon held another online edition in the summer. All of the videos are now publicly viewable. You'll find them in this playlist on YouTube.
I had the honour of doing a short talk on snapshot testing in PHP, which you can watch below.
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Emma Febre wrote an interesting piece on the pittfals of using snapshots.
Read more [madewithlove.com]
In a new blogpost at Sitepoint Christopher Pitt talks about snapshot testing. He first explains how snapshot testing can help test React components. Then he demonstrates how you can use our home grown package to use snapshot testing in PHP. Finally he shows pretty cool use cases for snapshot tests.
Ah-ha moments are beautiful and rare in programming. Every so often, we’re fortunate enough to discover some trick or facet of a system that forever changes how we think of it.For me, that’s what snapshot testing is.
You probably write a lot of PHP code, but today I want to talk about something I learned in JavaScript. We’ll learn about what snapshot testing is and then see how it can help us write better PHP applications.
https://www.sitepoint.com/snapshot-testing-viable-php/
If you want know more about snapshot testing, check out this blogpost by my colleague Sebastian, or watch this video where I refactor some tests to use snapshots.
Welcome to part 2 of a series on how to test a Vue component. Here's the table of contents of the series: Starting out with tests The first test and snapshot testing (you're here) Creating an instance of a component More tests and faking time Jest awesomeness and a skeleton to get started Setting up…
While working a little bit on laravel-sitemap I decided to refactor the tests to make use of our own snapshot assertions package. The snapshot package enables you to generate snapshots with the output of your tests. On subsequent runs of those tests it can assert if the output still matches the contents of the snapshot.
In this video I demonstrate how the refactor of the tests of laravel-sitemap was done. (double-click on it to view it full-screen)
If you want to know more about snapshot testing, then read this blog post written by my colleague Sebastian. The refactor of the tests can be viewed in this commit on GitHub.
(Little note on the video itself: this is my first tutorial video I ever made. After recording it I noticed that I used a wrong ratio resulting in those black bars on the side. Ah well, you live you learn. Next time it will be better. For those interested, I used a Blue Yeti Pro mic to record my voice and ScreenFlow to record and edit the video.)
My colleague Sebastian recently released a new package called phpunit-snapshot-assertions. In a new post on his blog he tells all about it.
The gist of snapshot testing is asserting that a set of data hasn’t changed compared to a previous version, which is a snapshot of the data, to prevent regressions. The difference between a classic assertEquals and an assertMatchesSnapshot is that you don't write the expectation yourself when snapshot testing. When a snapshot assertion happens for the first time, it creates a snapshot file with the actual output, and marks the test as incomplete. Every subsequent run will compare the output with the existing snapshot file to check for regressions.
https://medium.com/@sebdedeyne/a-package-for-snapshot-testing-in-phpunit-2e4558c07fe3