// ── Test-process setup, loaded into every test file ────────────────────────
//
// `npm test` passes this with `--require`, so it runs before the test file it
// is hosting — which is the only moment early enough to matter, because
// `utils/db.js` builds its mariadb pool at REQUIRE time.
//
// It fixes two things that were per-file conventions, and therefore held only
// as well as the next test file remembered them:
//
//   1. **Nothing in the suite may reach a real database.** Without this, a file
//      that forgot the two `process.env` lines picked up `server/.env` through
//      db.js's own `dotenv.config()` and pooled five live connections to the
//      developer's MariaDB. The tests still passed — they stub their models —
//      so the only symptom was the process never exiting, plus five connections
//      held for as long as the worker lived. Thirty stranded workers is 150
//      connections, which is the whole server's limit.
//   2. **The pool is closed when the file's tests are done**, so the process can
//      exit at once instead of waiting out the driver's connect retries.
//
// `dotenv` does not overwrite variables that already exist, so pinning the dead
// port here beats `.env` while still letting an explicit `DB_PORT=… npm test`
// through for anyone who deliberately wants a live database.
const { after } = require('node:test')

process.env.DB_HOST = process.env.DB_HOST || '127.0.0.1'
process.env.DB_PORT = process.env.DB_PORT || '59999'

// A root-level hook, registered before the test file is even read, so it runs
// once after everything in that file.
//
// Only in the per-file child processes. `--require` is inherited by the runner
// process too, and registering a root hook there gives node:test a second root
// context to report — an empty "tests 0 / pass 0" summary printed after the real
// one, which reads like a suite that silently ran nothing.
if (process.env.NODE_TEST_CONTEXT) {
  after(async () => {
    // Resolved rather than required: a file that never touched the database must
    // not have a pool built for it here just so this can close one.
    const cached = require.cache[require.resolve('../src/utils/db')]
    if (cached) await cached.exports.close()
  })
}