test-coverage

Installation
SKILL.md

Test Coverage

Audit gaps, write targeted tests, enforce thresholds — across any ecosystem.

Mental Model

The testing pyramid encodes an economic truth: each tier tests what only it can test.

Tier Tests Cost to write Cost to run
Unit Pure functions, domain logic, validation, parsing Low Milliseconds
Integration Database queries, API boundaries, access control, service interactions Medium Seconds
Component Rendered UI in a real browser, user interactions, visual states Medium Seconds
E2E Full user flows across the entire stack High Minutes

Coverage is a regression gate, not a quality metric. High coverage with bad tests is worse than moderate coverage with good tests. The goal is: new code cannot silently skip tests.

Exclusions are architecture, not exceptions. Every exclusion documents a deliberate decision about where code is tested. An exclusion at one tier should have coverage at another.

Related skills
Installs
13
GitHub Stars
14
First Seen
Mar 23, 2026