import json
import sys
from pathlib import Path
def analyze_coverage():
"""Analyze coverage.json to identify modules with low coverage."""
coverage_file = Path("coverage.json")
if not coverage_file.exists():
print("Run: uv run pytest tests/ --cov=src --cov-report=json")
sys.exit(1)
with coverage_file.open() as f:
data = json.load(f)
files = data.get("files", {})
low_coverage = []
for file_path, file_data in files.items():
coverage = file_data["summary"]["percent_covered"]
if coverage < 80:
missing_lines = file_data["missing_lines"]
low_coverage.append({
"file": file_path,
"coverage": coverage,
"missing_lines": len(missing_lines),
"lines": missing_lines[:10], # First 10 missing lines
})
# Sort by coverage percentage
low_coverage.sort(key=lambda x: x["coverage"])
print("Modules with coverage < 80%:")
for module in low_coverage:
print(f"\n{module['file']}: {module['coverage']:.1f}%")
print(f" Missing {module['missing_lines']} lines")
if module["lines"]:
print(f" First missing lines: {module['lines']}")
if __name__ == "__main__":
analyze_coverage()
