Test and Fix Loop

Purpose

An autonomous loop for the agent to identify, analyze, and fix failing unit tests using Vitest.

Loop Logic

1. Identify: Run pnpm test to identify failing tests.
2. 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.
3. Fix: Apply the minimum necessary change to either the source code (if it's a bug) or the test code (if the test is outdated).
4. 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

1. pnpm test fails in packages/common/src/math.test.ts because add(2, 2) returned 5.
2. Agent analyzes packages/common/src/math.ts and finds a typo a + b + 1.
3. Agent fixes the typo to a + b.
4. pnpm test passes.

Scenario: Updating a test after a deliberate change

1. pnpm test fails because a UI component's text changed from "Submit" to "Confirm".
2. Agent confirms the change was intentional.
3. pnpm test passes.

Resources

• pnpm Commands for Node.js: Common commands for testing and managing dependencies.
• Testing Best Practices: Project-specific testing guidelines.