Topic

#Testing

14 articles on Testing — news, releases, guides and analysis from the SourceFeed engine.

Mutation Testing Finds What 100% Coverage Hides

A fully covered Node resilience library still shipped a metrics bug, and Stryker surfaced it in under six minutes.

Let Hypothesis generate the test inputs you'd never type and shrink failures to minimal repros.

A FastAPI hardening pass shows why exception handlers, logging, and secret sweeps each deserve their own regression tests.

Injectable time turns an LLM-written rate limiter from trust-me code into a table you can verify in microseconds.

A tiny Go tool treats agent test claims as cache entries that expire — and previews where agent trust is heading.

Deltix's rough Show HN debut still points at the architecture agentic mobile testing is converging on.

Tailscale's corruption post-mortem and a 15-minute simulated repro expose the bug class coverage metrics can't see.

American Express researchers show where LLMs actually belong in mainframe modernization: writing the tests, not the Java.

Encode a scheduler's invariants in Z3, get a counterexample, then a machine-checked proof for every input.

Buildkite traced intermittent Rails test failures to heap corruption in Ruby's hiredis driver — code that also ran in production.

Wire consumer-driven Pact tests into CI so a backend deploy fails before it breaks your frontend.

Faster cycles and thin QA turned users into free testers. The pattern is older than it looks.

As AI agents generate code at ten times human speed, the old "ship fast, clean up later" playbook collapses under compounding technical debt.

Wire up pre-commit hooks so broken or unformatted Python is caught automatically before it ever reaches your branch.