Test and fix
A sophisticated tool designed to bring quality and security to the world of AI Agent Skills
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Run unit tests and automatically fix code failures, regression bugs, or test mismatches. Use when tests are failing, after implementing new features, or to repair "broken" tests.
SKILL.md
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Test and Fix Loop
Purpose
An autonomous loop for the agent to identify, analyze, and fix failing unit tests using Vitest.
Loop Logic
- Identify: Run
pnpm testto identify failing tests. - Analyze: Examine the test output to determine:
- The failing test file and line number.
- The expected vs actual values.
- Refer to ../common-references/troubleshooting.md for common test failure patterns.
- Fix: Apply the minimum necessary change to either the source code (if it's a bug) or the test code (if the test is outdated).
- Verify: Re-run
pnpm test.- If passed: Move to the next failing test or finish if all are resolved.
- If failed: Analyze the new failure (or the same one if the fix was insufficient) and repeat the loop.
Termination Criteria
- All tests pass (as reported by
pnpm test). - Reached max iteration limit (default: 5).
- The error persists after multiple distinct fix attempts, indicating a need for human intervention or a broader architectural change.
Examples
Scenario: Fixing a logic error
pnpm testfails inpackages/common/src/math.test.tsbecauseadd(2, 2)returned5.- Agent analyzes
packages/common/src/math.tsand finds a typoa + b + 1. - Agent fixes the typo to
a + b. pnpm testpasses.
Scenario: Updating a test after a deliberate change
pnpm testfails because a UI component's text changed from "Submit" to "Confirm".- Agent confirms the change was intentional.
pnpm testpasses.
Resources
- pnpm Commands for Node.js: Common commands for testing and managing dependencies.
- Testing Best Practices: Project-specific testing guidelines.