node/test/parallel/test-fs-promises-file-handle-dispose.js

'use strict';

const common = require('../common');
const assert = require('assert');
const { opendirSync, promises: fs } = require('fs');

async function explicitCall() {
  const fh = await fs.open(__filename);
  fh.on('close', common.mustCall());
  await fh[Symbol.asyncDispose]();

  const dh = await fs.opendir(__dirname);
  await dh[Symbol.asyncDispose]();
  // Repeat invocations should not reject
  await dh[Symbol.asyncDispose]();
  await assert.rejects(dh.read(), { code: 'ERR_DIR_CLOSED' });

  const dhSync = opendirSync(__dirname);
  dhSync[Symbol.dispose]();
  // Repeat invocations should not throw
  dhSync[Symbol.dispose]();
  assert.throws(() => dhSync.readSync(), { code: 'ERR_DIR_CLOSED' });
}

explicitCall().then(common.mustCall());
// TODO(aduh95): add test for implicit calls, with `await using` syntax.