// Hacker Noon · 2 April 2026

Why "100% Test Coverage" Is a Vanity Metric

100% test coverage feels great on a slide deck. It means almost nothing in production. Teams that fixate on coverage numbers end up writing low-value tests that pad the metric while real bugs slip through. The smarter move: measure what your tests actually catch, not how many lines they touch.

Hacker Noon

@hacker-noon · Naina Garg

hackernoon.com

Hacker Noon@hacker-noon