/**
* Coverage Attribution Analysis for mcp-debugger
* Automatically runs after npm run test:coverage
*/
import fs from 'fs';
import path from 'path';
import { fileURLToPath } from 'url';
const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
try {
const summaryPath = path.join(__dirname, 'coverage', 'coverage-summary.json');
if (!fs.existsSync(summaryPath)) {
// Silently exit if no coverage data (might be running in a different context)
process.exit(0);
}
const coverage = JSON.parse(fs.readFileSync(summaryPath, 'utf8'));
const overall = coverage.total ? coverage.total.lines.pct : 0;
let totalUncovered = 0;
let totalLines = 0;
const files = [];
for (const [filePath, data] of Object.entries(coverage)) {
if (filePath === 'total') continue;
const uncovered = data.lines.total - data.lines.covered;
totalUncovered += uncovered;
totalLines += data.lines.total;
// Extract relative path for cleaner display
let cleanPath = filePath.replace(process.cwd(), '').replace(/^[/\\]/, '');
cleanPath = cleanPath.replace(/\\/g, '/');
files.push({
path: cleanPath,
coverage: data.lines.pct,
uncovered,
total: data.lines.total
});
}
// Calculate impact on overall coverage
files.forEach(f => {
f.impact = totalLines > 0 ? (f.uncovered / totalLines) * 100 : 0;
});
// Sort by uncovered lines (descending)
files.sort((a, b) => b.uncovered - a.uncovered);
// Print compact analysis
console.log('\n' + '═'.repeat(70));
console.log(' COVERAGE ANALYSIS - Files to focus on (sorted by impact):');
console.log('═'.repeat(70));
console.log(`Overall: ${overall.toFixed(1)}% | Focus on files with most uncovered lines`);
console.log('─'.repeat(70));
// Show top 10 files
const topFiles = files.slice(0, 10);
if (topFiles.length > 0) {
console.log('Lines Cov% Impact File');
console.log('─'.repeat(70));
topFiles.forEach(f => {
// Shorten path if needed
let displayPath = f.path;
if (displayPath.length > 45) {
displayPath = '...' + displayPath.slice(-42);
}
console.log(
f.uncovered.toString().padStart(5) +
f.coverage.toFixed(0).padStart(6) + '%' +
('+' + f.impact.toFixed(1) + '%').padStart(8) +
' ' + displayPath
);
});
if (files.length > 10) {
console.log(`... +${files.length - 10} more files`);
}
}
console.log('─'.repeat(70));
console.log('Run "npm run test:coverage:analyze" for detailed analysis');
console.log('═'.repeat(70) + '\n');
} catch (error) {
// Silently fail - don't disrupt the test flow
console.log('\n[Coverage analysis unavailable]');
}
