Add test suite performance optimization guidance #24
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Adds section 11 to policyengine-testing-patterns-skill documenting best practices for optimizing test suite performance in country model repositories. Key patterns: - Use @pytest.mark.microsimulation for expensive tests - Separate fast unit tests from slow microsimulation tests - Provide make test/test-all/test-microsimulation targets - Use module-scoped fixtures instead of module-level initialization - Remove expensive validity tests that iterate all variables Learned from policyengine-uk issue #1452 where these optimizations reduced: - Test time from minutes to seconds - Memory usage from >4GB to <1GB - CI failures due to OOM errors 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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Summary
Adds comprehensive documentation on optimizing test suite performance in PolicyEngine country model repositories.
Changes
policyengine-testing-patterns-skill: "Test Suite Performance Optimization"Context
This guidance was learned from optimizing policyengine-uk (issue #1452), where these patterns:
Impact
Future Claude Code sessions working on country model repositories will now:
@pytest.mark.microsimulationfor expensive testsmake testtargets for repos🤖 Generated with Claude Code