# Test Strategy And Coverage

> Define right-sized test layers and coverage priorities for a change.

- Skill: `ldilov/test-strategy-and-coverage` (Agent Skill)
- Install (CLI): `npx skillmds@latest add ldilov/test-strategy-and-coverage`
- Raw SKILL.md: https://api.skillmd.com/api/skills/ldilov/test-strategy-and-coverage/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: ldilov (https://skillmd.com/u/ldilov)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/ldilov/test-strategy-and-coverage

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# Test Strategy And Coverage

## Trigger Signals

- the task adds or changes behavior and the right test depth is unclear

## Inspect First

- changed files, existing test layers, and validation commands

## Workflow

1. map the behavioral risk of the change
2. choose the minimum test layers that cover that risk
3. identify critical missing cases
4. summarize the coverage strategy

## Output Contract

- recommended test layers
- critical cases to cover
- explicit gaps or acceptable deferrals

## Failure Modes

- no executable validation surface exists

## Escalation

- escalate when a risky change has no trustworthy test path