Contributing Regression Fixtures

Benchmark and regression fixtures live under tests/fixtures/benchmark_projects/. They make bugs reproducible and keep fixed behavior fixed.

Fixture Policy

• Add a minimal KiCad project for every user-facing regression when possible.
• Keep projects small and remove proprietary data.
• Prefer descriptive names such as fail_dirty_transfer_wrong_pad_nets.
• Include only files needed to reproduce the behavior.
• Add a test that fails without the fix and passes with it.

Privacy Checklist

• No customer board names.
• No internal part numbers unless they are public.
• No secrets, tokens, or private URLs.
• No generated manufacturing package unless the test requires it.

Test Placement

Use unit tests for pure helpers, integration tests for file-backed tool behavior, and e2e tests for workflow-level regressions.