CI Is Green. What Could Still Go Wrong?

<p>A teammate deleted a test file on a Friday. Not on purpose. The suite still passed. The pipeline still went green. Nobody noticed for three weeks.</p> <p>Here's the part that

<h2> The Asymmetry of Change: Why Your Tests Are Looking the Wrong Way </h2> <p>A passing build is often treated as a certificate of correctness. In reality, it's a narrow

<h1> A green test suite proves less than you think </h1> <p>The test that scared me was the one that passed.</p> <p>I had an integration test for a routing agent, the kind that

<p>My CI was green. 1,885 tests, 66 packages, zero failures. go vet clean. The build was a single self-contained binary. By every signal a Go project gives you, it worked.</p>

<p><em>Why I invented a metric I'd never heard of, and why the industry eventually caught up.</em></p> <p>I started using the term "predictability" in 2019, and I was pretty sure

<p>A few weeks back I gave a coding agent one instruction: <em>"fix the failing import and ship it."</em></p> <p>CI went green. The agent, which I'd allowed to self-merge when