pablobm created an issue (openstreetmap/openstreetmap-website#6768)
With relation to my work at
https://github.com/openstreetmap/openstreetmap-website/pull/6497, @firefishy
raised the valid question of whether we should be moving on from Selenium.
I'm not sure, but I thought I'd go and ask around. This is what I got.
First: important to note that Rails uses Selenium by default. Going for a
different option would be a diversion from Rails standard convention. Still,
Selenium can get very annoying, so many Rails teams choose different tools. In
my limited survey, popularity of tools appears to be as follows:
- Cuprite might be the most popular. It integrates well with Capybara, but only
works with Chrome/Chromium. This is because it uses the CDP protocol, which
Firefox deprecated in favour of WebDriver BiDi.
- Playwright comes second. Migration from Selenium appears to be less simple,
but not out of the question.
- Not much support for Cypress and no mention of Puppeteer.
I got a particularly insightful comment that I'm going to reproduce here:
> More broadly, the browser automation space _is_ in flux. Selenium isn’t dead,
> but it’s no longer the cutting edge—it’s the conservative,
> compatibility-first option, which explains why Rails still defaults to it.
> CDP-based tools (Cuprite, Playwright, Puppeteer) offer better performance,
> richer browser control, and fewer protocol translation layers, at the cost of
> being more Chrome-centric.
>
>Firefox moving toward WebDriver BiDi is a signal that classic WebDriver is
>showing its age. BiDi aims to close the gap with CDP by supporting true
>bidirectional communication, but ecosystem support is still catching up. For
>now, CDP has momentum, better tooling, and real-world stability.
>
>In practice, you’re choosing between:
>- Selenium/WebDriver: broad browser support, slower evolution, more flakiness
> - CDP-based tools: faster, more reliable, Chrome-first
> - Future BiDi-based tools: promising, but not fully there yet
Personally, I wouldn't be thrilled to drop Firefox as test browser, but it's
not a strong opinion and I would like to know what others think.
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