node/test/parallel/test-fs-promises-file-handle-sync.js
Michaël Zasso df08779e0d
test: make crashOnUnhandleRejection opt-out
This commit removes `common.crashOnUnhandledRejection()` and adds
`common.disableCrashOnUnhandledRejection()`.

To reduce the risk of mistakes and make writing tests that involve
promises simpler, always install the unhandledRejection hook in tests
and provide a way to disable it for the rare cases where it's needed.

PR-URL: https://github.com/nodejs/node/pull/21849
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
2018-07-19 08:47:28 +02:00

26 lines
757 B
JavaScript

'use strict';
require('../common');
const assert = require('assert');
const fixtures = require('../common/fixtures');
const tmpdir = require('../common/tmpdir');
const { access, copyFile, open } = require('fs').promises;
const path = require('path');
async function validateSync() {
tmpdir.refresh();
const dest = path.resolve(tmpdir.path, 'baz.js');
await copyFile(fixtures.path('baz.js'), dest);
await access(dest, 'r');
const handle = await open(dest, 'r+');
await handle.datasync();
await handle.sync();
const buf = Buffer.from('hello world');
await handle.write(buf);
const ret = await handle.read(Buffer.alloc(11), 0, 11, 0);
assert.strictEqual(ret.bytesRead, 11);
assert.deepStrictEqual(ret.buffer, buf);
}
validateSync();