#Test

Systems that generate GPU kernels with language models report high correctness rates. Those rates come from a single loose test: run the kernel on a few random inputs at one fixed shape and accept it if the output is close to a reference.…

A transparent, under-the-hood look at Echo's CVE reduction loop: multi-scanner detection, safe version bumps, custom backporting, and continuous automated syncing for NanoClaw.

Migration of legacy COBOL programs to Java requires extensive testing to ensure correct functionality. This effort is often complicated by the lack of test data and the difficulty of validating all corner cases.…

We're starting to leave the territory where you'd test an LLM by e.g. "create an svg of pelican on a bicycle". As one idea to generalize it, I was interested what Opus 5 would do if I gave it the first paragraph of the Lord of the Rings, a 1M token budget…

Ive dealt with this error at AWS. It’s a unit error. In my case we _meant_ to charge like 5¢/GB, but missed the unit (GB), and then the billing system defaults to bytes.…

AI made experiments cheap to run, not easy to trust. Build an experimentation framework that gets harder to pass as the tests get easier to run.

You might find this post especially useful if you have a project with many #[sqlx::test] tests.

Editor's note: Today, our friends at Chromatic are sharing an early look at their new visual testing plugin for Vitest.

Yesterday I was looking at YC jobs to see if there were any interesting small startups hiring in my area (while I otherwise love my current fully-remote j...

LymeAlert seeks to help people avoid the cost and the wait of going to the emergency room after being bitten by a tick.

We test Noctua’s first attempt at an all-in-one liquid cooler, focusing specifically on pump performance to determine whether Noctua’s AIO is truly a viable alternative to swapping the fans on another unit and the brand’s own legendary air cooler.

A fake recruiter, a crypto repo, and a remote code execution payload hidden in a test file.

Test-case reducers are less well known than they should be, and those who are aware of them don’t always realise the variety of ways we can use – perhaps even abuse! – them.…

Welcome to all Camleers We are back with another practical walkthrough for the newcomers of the OCaml ecosystem. We understand from the feedback we have gathered over the years that getting started with the OCaml Distribution can sometimes be perceived as…

Building a hydraulic pressure test bench for aerospace or defence qualification testing isn't just a...

AI agents tend to be, at least as of this writing (May 2026), lousy at writing tests. The tests they write are often vague, cryptic, overcomplicated, hacky, dis...

When CI goes red on a diff that doesn't touch the failing surface, the working hypothesis isn't 'what did I break?' It's 'what did I just route into?' Two worked examples from POSIX and langgraph.