pixelmatch
mocha
pixelmatch | mocha | |
---|---|---|
5 | 139 | |
5,851 | 22,455 | |
1.1% | 0.2% | |
3.1 | 7.8 | |
9 months ago | 8 days ago | |
JavaScript | JavaScript | |
ISC License | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
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.
mocha
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Integration Testing in Obsidian
Using something like Vitest, Jest, or Mocha didn't work because:
- Introdução a testes unitários no desenvolvimento de software
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JS Toolbox 2024: Bundlers and Test Frameworks
MochaJS is a feature-rich JavaScript test framework running on Node.js, making it a popular choice for both backend and frontend testing. It's known for its flexibility and straightforward syntax, allowing for asynchronous testing and the use of any assertion library.
- Mocha is being maintained again
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Painless CLI integration testing
We use Jest Framework for testing. Jest is not a dogma, and, of course, in its place can be any other test runner, such as Mocha or Ava. Let's focus on tests. I'll provide a short example because I don’t want to waste your time. You can find the full version here. It's crucial to read the comments in the code below. Let's go!
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How To Write Better and Quality Code
JavaScript Popular tools for testing: Mocha, Jasmine, Unit JS, Jest
- Почему я программирую на Ruby
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Using Node.js for Automated Testing with Headless Browsers
To execute your tests, you can create test scripts using popular testing frameworks like Mocha, Jasmine, or Jest. These frameworks provide a structured way to organize and run your tests, report results, and handle assertions.
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My opinionated JavaScript package template repository - zero config, start immediately
⚗️ Mocha and Chai for testing
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Road Map To Become a Web Developer
Testing frameworks like Jest, Mocha, and Jasmine are crucial for software development, ensuring code reliability and correctness. They offer features like test suites, test cases, assertions, and asynchronous testing support.
What are some alternatives?
odiff - The fastest pixel-by-pixel image visual difference tool in the world.
Cucumber.js - Cucumber for JavaScript
Cypress - Fast, easy and reliable testing for anything that runs in a browser.
jest - Delightful JavaScript Testing.
loki - 👁 Visual Regression Testing for Storybook
tap - Test Anything Protocol tools for node
BackstopJS - Catch CSS curve balls.
TestCafe - A Node.js tool to automate end-to-end web testing.
vue-testing-library - 🦎 Simple and complete Vue.js testing utilities that encourage good testing practices.
pactum - REST API Testing Tool for all levels in a Test Pyramid
cypress-visual-regression - Module for adding visual regression testing to Cypress
Playwright - Playwright is a framework for Web Testing and Automation. It allows testing Chromium, Firefox and WebKit with a single API.