/
test-fs-writev-promises.js
50 lines (46 loc) · 1.96 KB
/
test-fs-writev-promises.js
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
'use strict';
const common = require('../common');
const assert = require('assert');
const path = require('path');
const fs = require('fs').promises;
const tmpdir = require('../common/tmpdir');
const expected = 'ümlaut. Лорем 運務ホソモ指及 आपको करने विकास 紙読決多密所 أضف';
let cnt = 0;
function getFileName() {
return path.join(tmpdir.path, `writev_promises_${++cnt}.txt`);
}
tmpdir.refresh();
(async () => {
{
const filename = getFileName();
const handle = await fs.open(filename, 'w');
const buffer = Buffer.from(expected);
const bufferArr = [buffer, buffer];
const expectedLength = bufferArr.length * buffer.byteLength;
let { bytesWritten, buffers } = await handle.writev([Buffer.from('')],
null);
assert.deepStrictEqual(bytesWritten, 0);
assert.deepStrictEqual(buffers, [Buffer.from('')]);
({ bytesWritten, buffers } = await handle.writev(bufferArr, null));
assert.deepStrictEqual(bytesWritten, expectedLength);
assert.deepStrictEqual(buffers, bufferArr);
assert(Buffer.concat(bufferArr).equals(await fs.readFile(filename)));
handle.close();
}
// fs.promises.writev() with an array of buffers without position.
{
const filename = getFileName();
const handle = await fs.open(filename, 'w');
const buffer = Buffer.from(expected);
const bufferArr = [buffer, buffer, buffer];
const expectedLength = bufferArr.length * buffer.byteLength;
let { bytesWritten, buffers } = await handle.writev([Buffer.from('')]);
assert.deepStrictEqual(bytesWritten, 0);
assert.deepStrictEqual(buffers, [Buffer.from('')]);
({ bytesWritten, buffers } = await handle.writev(bufferArr));
assert.deepStrictEqual(bytesWritten, expectedLength);
assert.deepStrictEqual(buffers, bufferArr);
assert(Buffer.concat(bufferArr).equals(await fs.readFile(filename)));
handle.close();
}
})().then(common.mustCall());