cypress-visual-regression
pixelmatch
| cypress-visual-regression | pixelmatch | |
|---|---|---|
| 2 | 5 | |
| 614 | 5,851 | |
| 0.8% | 1.1% | |
| 8.5 | 3.1 | |
| 5 days ago | 9 months ago | |
| TypeScript | JavaScript | |
| MIT License | ISC License |
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cypress-visual-regression
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Show HN: Instantly create a GitHub repository to take screenshots of a web page
https://github.com/mojoaxel/awesome-regression-testing#tools...
"visual-regression": https://github.com/topics/visual-regression
Cypress.io can run in a CI job, does Time Travel, works with DevTools debugger, can take screenshots and video, and it looks like there's a visual regression testing thing for it: https://github.com/mjhea0/cypress-visual-regression
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Understanding and implementing Cypress snapshot testing
The cypress-visual-regression module adds the compareSnapshot() Cypress command which takes a screenshot of the full screen or of a single HTML element.
pixelmatch
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Immich - High-performance self-hosted backup photos/videos from your mobile phone (kinda like a Google Photos replacement) - Progress update July 27th, 2022. The album feature on the web is here 🎉
I'm the dev for a javascript-based reddit bot that implements image comparisons using both pixel matching and/or perceptual hashes (that could be stored in a DB). I'd be happy to go over high-level or implementation details if its something your team would be interested in. Either on github or elsewhere.
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JS Question
There are quite a few image comparison libraries in pure Javascript for both node and browser.
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Show HN: Instantly create a GitHub repository to take screenshots of a web page
You could absolutely get this working with GitHub Actions with a bit of creativity.
I've been playing around with my own image-diff tool for this kind of thing, but it's not yet in a decent state: https://github.com/simonw/image-diff - there are other, better options out there such as https://github.com/mapbox/pixelmatch
Needle is an older system that did this using Selenium - updating that to work with Playwright (or Playwight via shot-scraper) would be an interesting project: https://github.com/python-needle/needle
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Visual Regression Testing with Playwright
Internally, Playwright Test uses the pixelmatch library to compare screenshots for visual differences. It is possible to pass several options to this library, to fine-tune the comparison of images. The most important option is the threshold option, which indicates the threshold amount of differences allowed between two images.
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An Introduction to Scraping (Almost) Anything With Puppeteer and Node.js
Other use-cases include combining screenshots with the Autocode scheduler, a file hosting platform like Box, and a package like pixelmatch to create daily screenshot diffs for regression testing.
What are some alternatives?
cypress-image-diff - Visual regression test with cypress
odiff - The fastest pixel-by-pixel image visual difference tool in the world.
cypress-image-snapshot - Catch visual regressions in Cypress
Cypress - Fast, easy and reliable testing for anything that runs in a browser.
cypress-plugin-snapshots - Plugin for snapshot tests in Cypress.io
loki - 👁 Visual Regression Testing for Storybook
needle - Automated tests for your CSS.
BackstopJS - Catch CSS curve balls.
image-diff - CLI tool for comparing images
vue-testing-library - 🦎 Simple and complete Vue.js testing utilities that encourage good testing practices.
cypress-react-app-actions - Access the internals of React components from Cypress end-to-end tests
TestCafe - A Node.js tool to automate end-to-end web testing.