Visual diffing in UI tests is something that actually can be solved with more code, see https://github.com/americanexpress/jest-image-snapshot, https://github.com/gemini-testing/gemini, or https://github.com/BBC-News/wraith.
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| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
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| 2013 | 2013-01-01 00:00:00 UTC | 2014-01-01 00:00:00 UTC | 3 | 1 | 2 |
| 2014 | 2014-01-01 00:00:00 UTC | 2015-01-01 00:00:00 UTC | 2 | 0 | 2 |
| 2015 | 2015-01-01 00:00:00 UTC | 2016-01-01 00:00:00 UTC | 4 | 0 | 4 |
| 2016 | 2016-01-01 00:00:00 UTC | 2017-01-01 00:00:00 UTC | 3 | 0 | 3 |
| 2017 | 2017-01-01 00:00:00 UTC | 2018-01-01 00:00:00 UTC | 2 | 0 | 2 |
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 1 | 0 | 1 |
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broken link vulnerability by Shamim ( hackerone @shamim_12__)
Read the full README on GitHubWhat Hacker News says
15 sourcesScreenshots are useful, but diffs of screenshots are even more useful.
You could maybe immitate the workflow used by wraith?
https://github.com/bbc-news/wraith
For example to setup screenshot diffs between an existing production site and local dev, use:
# (required) The domains to take screenshots of.
domains:
current: "https://prod.yoursite.com"
new: "http://localhost:8000"
paths:
home: /pageyouareworkingon.html
Not sure how to connect to localhost 8000 from the web though...
In Show HN: Screen.rip – API for capturing web screenshotsWraith is super useful for web development on existing complex sites and I rarely hear of it or existing tools. Setup a staging site along with your production site, list the important URLs and when you run Wraith it'll compare screenshots of changes between the URLs on staging and production. This lets you update existing pages and verify you've not broken other pages with only a small amount of setup.
See https://github.com/BBC-News/wraith
In Ask HN: What are some of useful but little-known tools you use for development?This project hasn't been updated in two years. A couple of active alternatives:
https://github.com/BBC-News/wraith Wraith: A responsive screenshot comparison tool.
https://github.com/garris/BackstopJS BackstopJS: visual regression testing by comparing DOM screenshots over time.
https://github.com/Huddle/PhantomCSS PhantomCSS: Visual/CSS regression testing with PhantomJS.
In A testing system for catching visual regressions in Web applicationsBBC News' wraith[1] is a pretty great tool for this, although it doesn't really support a more complex web app flow (e.g. logging in) very well.
[1] https://github.com/BBC-News/wraith.
In Image-diff – Create an image differential between two imagesProbably the best way to test things like that is with a visual regression testing tool [1][2]. In practice these are difficult to get right and tend to produce a lot of false positives and negatives. See for instance Huxley [3]
[1]: https://github.com/BBC-News/wraith
[2]: https://percy.io/
[3]: https://github.com/facebookarchive/huxley
In CSS coding techniquesI think you meant:
https://github.com/cburgmer/csscritic - JavaScript, runs in browser
https://github.com/Huddle/PhantomCSS
https://github.com/bslatkin/dpxdt - Python, Deploys to App Engine / CloudSQL / Compute Engine
https://github.com/BBC-News/wraith - Ruby
https://github.com/sindresorhus/pageres - JavaScript, nodejs, PhantomJS
In Show HN: Diff.ioThis reminded me of Wraith, a screenshot comparison tool which The BBC developed for integration testing: https://github.com/bbc-news/wraith
In Show HN: Diff.ioI'm actually about to start setting up something similar myself. I had a pretty basic setup using Wraith a while back, but it wasn't terribly useful during heavy development since everything was intentionally changing.
Last I checked (not too long ago), Phantom didn't support flexbox properly, and I'm heavily invested in it now. Hopefully I can find something that works.
https://github.com/BBC-News/wraith
In CSS Testing with PhantomCSS, PhantomJS, CasperJS and GruntPrimarily scraping of comet/ajax updating sites of course, but also some interesting uses for testing - crawling a site taking screenshots and then comparing screenshots across releases looking for layout bugs was quite a fun thing. The same principle as https://github.com/BBC-News/wraith
In PhantomJS 2.0 is getting ready for releaseWe've been using a similar tool (https://github.com/BBC-News/wraith) for a little while now and it's transformed our way of working - 50 page layouts x 5 responsive breakpoints verified with a high degree of confidence in minutes on every build.
Well worth the effort to take the time to set up such a tool, particularly if you have a large UI test matrix - we couldn't possibly verify all the different page layouts and sizes before we introduced wraith
In Pediff – tools for visually comparing web pagesWhat types of tests—or testing software—could be run on a WordPress site? For example, after we update a plugin on a WordPress site we manually check that the site hasn't changed in appearance. What software – or methodology – would you recommend for automating this game of spot-the-difference?
The nearest I've found (but not tried) are:
Screenster: http://www.creamtec.com/products/screenster/index.html
Wraith: https://github.com/BBC-News/wraith
In Strategies to quickly become productive in an unfamiliar codebaseFor web there is https://github.com/BBC-News/wraith , there needs to be something like this for mobile development.
In Mobile at ScaleThere are a couple of open source projects for visual regression testing -
Wraith, used by BBC: https://github.com/BBC-News/wraith
Huxley, by Facebook: https://github.com/facebook/huxley
In VisualPing - Get notified on visual changes to a website or website areaWraith – A screenshot comparison tool from the BBC
158 points · Open discussion