Mutation Testing: Why Code Coverage Isn't Enough
Mutation Testing: Why Code Coverage Isn't Enough How the Stryker tool reveals the true strength of your test suite — using a real business rule with…
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Your RLS Policy Passed Its Test For the Wrong Reason
A manual psql check answers exactly one question: does this policy work right now, against today's schema, with today's roles. It says nothing about…
2- AWS Serverless: Testing (typescript)
Shifting from traditional application testing to serverless TypeScript engineering is all about shifting your perspective: you stop testing a runnin…
We Replaced Jest With node:test in 12 Services — Here's What Broke and What Didn't
After months of using Jest for unit testing, we decided to take the plunge and migrate to the built-in node:test runner. The results were surprising…
Migrating from Jest to Vitest 4: A Complete 2026 Guide
Last month I overhauled the test pipeline for a side project and switched from Jest to Vitest. The reason was straightforward: maintaining Jest in a…