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nodejs/test/parallel/test-fs-read-promises-optional-params.js
Lucas Holmquist b6da55f0fd
fs: make fs.read params optional
This makes all the parameters of the `fs.read` function, except
for `fd` and the callback(when not using as a promise) optional.

They will default to sensible defaults.

Fixes: https://github.com/nodejs/node/issues/31237

PR-URL: https://github.com/nodejs/node/pull/31402
Reviewed-By: Robert Nagy <ronagy@icloud.com>
2020-03-11 16:47:29 +01:00

20 lines
588 B
JavaScript

'use strict';
const common = require('../common');
const fixtures = require('../common/fixtures');
const fs = require('fs');
const read = require('util').promisify(fs.read);
const assert = require('assert');
const filepath = fixtures.path('x.txt');
const fd = fs.openSync(filepath, 'r');
const expected = Buffer.from('xyz\n');
const defaultBufferAsync = Buffer.alloc(16384);
read(fd, {})
.then(function({ bytesRead, buffer }) {
assert.strictEqual(bytesRead, expected.length);
assert.deepStrictEqual(defaultBufferAsync.length, buffer.length);
})
.then(common.mustCall());