Dynamic Coverage Configuration

This script generates a custom .coveragerc file for backend testing that excludes:

1. Bundled components - Components listed in SIDEBAR_BUNDLES from src/frontend/src/utils/styleUtils.ts
2. Legacy components - Python files containing legacy = True

How it works

1. Reads frontend config: Parses styleUtils.ts to extract bundled component names
2. Scans backend files: Finds all .py files in src/backend/base/langflow/components/ with legacy = True
3. Generates .coveragerc: Creates exclusion patterns for pytest-cov

Usage

Local development

# Generate config and run tests
python3 scripts/generate_coverage_config.py
cd src/backend && python -m pytest --cov=src/backend/base/langflow --cov-config=.coveragerc

CI Integration

The script runs automatically in CI before backend tests via .github/workflows/python_test.yml.

Files affected

• Input: src/frontend/src/utils/styleUtils.ts (SIDEBAR_BUNDLES)
• Input: src/backend/base/langflow/components/**/*.py (legacy components)
• Output: src/backend/.coveragerc (auto-generated, in .gitignore)

Benefits

• Accurate coverage: Focuses on actively maintained core code
• Dynamic updates: Automatically adapts when bundles/legacy components change
• Codecov compatible: Generated config works with both local testing and Codecov reporting