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From unit tests to whole universe tests (with will wilson of antithesis) [video]
by zdw
Is there a demo of what Antithesis does? I have seen it on HN a few times and I like the idea of monkey typing a system. But how does it work in practice? Does it call my APIs, does it introduce memory corruptions, does it bring down my containers...what does it do?
I found helpful this explanation of what Antithesis isn't:
> Property-based testing vs. Antithesis
> Property-based testing (PBT) uses random inputs to check individual data structures, procedures, or occasionally whole programs for high-level invariants or properties. Property-based testing has much in common with fuzzing—the main differences are heritage (PBT comes from the functional programming world, while fuzzing comes from the security/systems programming world) and focus (program functionality vs. security issues). Like fuzzing, PBT is generally only applicable to self-contained libraries and processes.
> Antithesis is analogous to applying PBT to an entire interacting software system—including systems that are concurrent, stateful, and interactive. Antithesis can randomly vary the inputs to a software program, and also the environment within which it runs. Like a PBT system, Antithesis is designed to check high-level properties and invariants of the system under test, but it can do so with many more types of software.
I've scrubbed through the video, and it seems to be 100% talking-head filler except for an outro still image—no actual video information content at all unless you want to analyze Wilson's facial expressions or think he's hot.
Regular reminder that yt-dlp (--write-sub --write-auto-sub --sub-lang en) can download subtitles that you can read, grep, and excerpt, so you don't have to watch videos like this unless you like to.
Thanks for the auto sub I didn’t know it is a feature.
How did you get ytdlp to work? It used to work for me and I just did a fresh install a week ango and now youtube is giving me auto/cookie/sign in errors (captcha I presume?) when it didn’t before
As a general rule, you should update yt-dlp before using it. They release new versions very frequently to work around new walls on YouTube and other platforms. An update usually solves this kind of issue for me, even if I've updated just a few days ago.
(I haven't tried it today so can't speak to whether this is a complete solution in this particular case.)
do they have sustained at least one prominent rust first and rust core customer? i doubt, rust has a lot of tooling and catches at compile time what their product does in runtime.
also not sure about antithesis biz practices. you pay them for integration, you spend time educating them and improving their product. and in the end get vendor locking on their compute with arbitrary non transparent pricing.
if your are not in rust - sure it can be price efficient.
Any tools we could use to test mobile apps automation testing using AI (Like MCPs for mobile app testing)??
Reflect tests mobile apps by converting plain text instructions into appium commands at runtime using AI. Your tests are just the text steps.
https://reflect.run/mobile-testing/
disclaimer: I co-founded Reflect.
Crafted by Rajat
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