Test and Fix Loop

Purpose

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

Loop Logic

1. •Identify: Run make test to identify failing tests.
2. •Analyze: Examine the pytest output to determine:
   • •The failing test file and line number.
   • •The expected vs actual values (assertion errors).
   • •Tracebacks for runtime errors.
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 •Fix: Apply the minimum necessary change to either the source code (if it's a bug) or the test code (if the test is outdated).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 make test (or uv run pytest path/to/failing_test.py for speed).
   • •If passed: Move to the next failing test or finish if all are resolved.
   • •If failed: Analyze the new failure and repeat the loop.

Termination Criteria

• •All tests pass (as reported by make test).
• •Reached max iteration limit (default: 5).
• •The error persists after multiple distinct fix attempts, indicating a need for human intervention.

Examples

Scenario: Fixing a logic error

1. •make test fails in tests/test_math.py because add(2, 2) returned 5.
2. •Agent analyzes src/your_package/math.py and finds a typo a + b + 1.
3. •Agent fixes the typo to a + b.
4. •make test passes.

Resources

• •Python Development Commands: Common commands for testing and managing dependencies.
• •Pytest Documentation: Official documentation for the pytest framework.
• •Unit Test Manners: Project-specific testing guidelines.