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Test Before Ship

Use this skill when implementing a new feature or fixing a bug. Write or update tests before marking the task done. Never consider code complete without verifying it works through automated tests.

Installable skillMITBy aiming-labUpdated Oct 30, 2026
INTENDED FORClaude CodeCodexOpenClawCursorInstall in a listed agent.

instructions.md

---
name: test-before-ship-64f7ecddfe11
description: Use this skill when implementing a new feature or fixing a bug. Write or update tests before marking the task done. Never consider code complete without verifying it works through automated tests.
category: coding
---

# Test Before Ship

**Test pyramid:**
- Unit tests for pure functions and business logic (fast, many).
- Integration tests for service interactions and DB queries (medium).
- End-to-end tests for critical user journeys (slow, few).

**Test quality checklist:**
- Does the test actually fail when the code is broken?
- Does it cover the happy path AND the most likely error cases?
- Is the test name descriptive enough to diagnose a failure from the name alone?

**For bug fixes:** add a regression test that reproduces the bug before fixing it.

**Anti-patterns:**
- Tests that only test the mock, not the real behavior.
- Skipping tests because "it probably works".

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Imported from the listed AgentSkill.sh category. Complete supplied package files and notices are retained. Required external tools and credentials are not installed. No bundled code was executed during import. Individual agent task behavior has not been tested.