// tests/kb-update/test-driver-atomic-writes.test.mjs
// RX-OPS2 acceptance: every corpus-writing driver routes its writes through the
// crash-safe atomicWriteSync (tmp+rename), never a bare writeFileSync that can leave a
// half-written reference file. Mirrors the existing migrate-corpus source guard
// (test-migrate-apply.test.mjs) for the five standalone drivers.

import { test } from 'node:test';
import assert from 'node:assert/strict';
import { readFileSync } from 'node:fs';
import { join, dirname } from 'node:path';
import { fileURLToPath } from 'node:url';

const KB = join(dirname(fileURLToPath(import.meta.url)), '..', '..', 'scripts', 'kb-update');

const DRIVERS = [
  'backfill-status.mjs',
  'backfill-category.mjs',
  'dedup-plain-header.mjs',
  'relabel-dato.mjs',
  'relabel-dialect.mjs',
];

for (const driver of DRIVERS) {
  test(`${driver} — writes corpus files via atomicWriteSync, never bare writeFileSync`, () => {
    const src = readFileSync(join(KB, driver), 'utf8');
    assert.match(src, /atomicWriteSync/, `${driver} must import/use the atomic writer`);
    assert.doesNotMatch(src, /\bwriteFileSync\b/, `${driver} must not call writeFileSync directly`);
  });
}