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fix: harden coverage lane cleanup

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Kyle Yasuda
2026-03-29 00:08:12 -07:00
parent cb37c68248
commit 9dae4af773
2 changed files with 55 additions and 30 deletions
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15
scripts/run-coverage-lane.test.ts
View File

@@ -1,7 +1,8 @@
import assert from 'node:assert/strict'; import assert from 'node:assert/strict';
import { resolve } from 'node:path';
import test from 'node:test'; import test from 'node:test';
import { mergeLcovReports } from './run-coverage-lane'; import { mergeLcovReports, resolveCoverageDir } from './run-coverage-lane';
test('mergeLcovReports combines duplicate source-file counters across shard outputs', () => { test('mergeLcovReports combines duplicate source-file counters across shard outputs', () => {
const merged = mergeLcovReports([ const merged = mergeLcovReports([
@@ -59,3 +60,15 @@ test('mergeLcovReports keeps distinct source files as separate records', () => {
assert.match(merged, /SF:src\/a\.ts[\s\S]*end_of_record/); assert.match(merged, /SF:src\/a\.ts[\s\S]*end_of_record/);
assert.match(merged, /SF:src\/b\.ts[\s\S]*end_of_record/); assert.match(merged, /SF:src\/b\.ts[\s\S]*end_of_record/);
}); });
test('resolveCoverageDir keeps coverage output inside the repository', () => {
const repoRoot = resolve('/tmp', 'subminer-repo-root');
assert.equal(resolveCoverageDir(repoRoot, []), resolve(repoRoot, 'coverage'));
assert.equal(
resolveCoverageDir(repoRoot, ['--coverage-dir', 'coverage/test-src']),
resolve(repoRoot, 'coverage/test-src'),
);
assert.throws(() => resolveCoverageDir(repoRoot, ['--coverage-dir', '../escape']));
assert.throws(() => resolveCoverageDir(repoRoot, ['--coverage-dir', '/tmp/escape']));
});

18
scripts/run-coverage-lane.ts
View File

@@ -1,6 +1,6 @@
import { existsSync, mkdirSync, readFileSync, readdirSync, rmSync, writeFileSync } from 'node:fs'; import { existsSync, mkdirSync, readFileSync, readdirSync, rmSync, writeFileSync } from 'node:fs';
import { spawnSync } from 'node:child_process'; import { spawnSync } from 'node:child_process';
import { join, relative, resolve } from 'node:path'; import { isAbsolute, join, relative, resolve } from 'node:path';
type LaneConfig = { type LaneConfig = {
roots: string[]; roots: string[];
@@ -85,6 +85,15 @@ function parseCoverageDirArg(argv: string[]): string {
return 'coverage'; return 'coverage';
} }
export function resolveCoverageDir(repoRootDir: string, argv: string[]): string {
const candidate = resolve(repoRootDir, parseCoverageDirArg(argv));
const rel = relative(repoRootDir, candidate);
if (isAbsolute(rel) || rel.startsWith('..')) {
throw new Error(`--coverage-dir must be within repository: ${candidate}`);
}
return candidate;
}
function parseLcovReport(report: string): LcovRecord[] { function parseLcovReport(report: string): LcovRecord[] {
const records: LcovRecord[] = []; const records: LcovRecord[] = [];
let current: LcovRecord | null = null; let current: LcovRecord | null = null;
@@ -251,7 +260,7 @@ function runCoverageLane(): number {
return 1; return 1;
} }
const coverageDir = resolve(repoRoot, parseCoverageDirArg(process.argv.slice(3))); const coverageDir = resolveCoverageDir(repoRoot, process.argv.slice(3));
const shardRoot = join(coverageDir, '.shards'); const shardRoot = join(coverageDir, '.shards');
mkdirSync(coverageDir, { recursive: true }); mkdirSync(coverageDir, { recursive: true });
rmSync(shardRoot, { recursive: true, force: true }); rmSync(shardRoot, { recursive: true, force: true });
@@ -260,6 +269,7 @@ function runCoverageLane(): number {
const files = getLaneFiles(laneName); const files = getLaneFiles(laneName);
const reports: string[] = []; const reports: string[] = [];
try {
for (const [index, file] of files.entries()) { for (const [index, file] of files.entries()) {
const shardDir = join(shardRoot, `${String(index + 1).padStart(3, '0')}`); const shardDir = join(shardRoot, `${String(index + 1).padStart(3, '0')}`);
const result = spawnSync( const result = spawnSync(
@@ -288,9 +298,11 @@ function runCoverageLane(): number {
} }
writeFileSync(join(coverageDir, 'lcov.info'), mergeLcovReports(reports), 'utf8'); writeFileSync(join(coverageDir, 'lcov.info'), mergeLcovReports(reports), 'utf8');
rmSync(shardRoot, { recursive: true, force: true });
process.stdout.write(`Merged LCOV written to ${relative(repoRoot, join(coverageDir, 'lcov.info'))}\n`); process.stdout.write(`Merged LCOV written to ${relative(repoRoot, join(coverageDir, 'lcov.info'))}\n`);
return 0; return 0;
} finally {
rmSync(shardRoot, { recursive: true, force: true });
}
} }
if (require.main === module) { if (require.main === module) {