0
0
mirror of https://github.com/nodejs/node.git synced 2024-11-30 15:30:56 +01:00
nodejs/test/parallel/test-fs-append-file-sync.js

90 lines
3.2 KiB
JavaScript
Raw Normal View History

'use strict';
const common = require('../common');
const assert = require('assert');
const join = require('path').join;
const fs = require('fs');
const currentFileData = 'ABCD';
const m = 0o600;
const num = 220;
const data = '南越国是前203年至前111年存在于岭南地区的一个国家国都位于番禺疆域包括今天中国的广东、' +
'广西两省区的大部份地区,福建省、湖南、贵州、云南的一小部份地区和越南的北部。' +
'南越国是秦朝灭亡后由南海郡尉赵佗于前203年起兵兼并桂林郡和象郡后建立。' +
'前196年和前179年南越国曾先后两次名义上臣属于西汉成为西汉的“外臣”。前112年' +
'南越国末代君主赵建德与西汉发生战争被汉武帝于前111年所灭。南越国共存在93年' +
'历经五代君主。南越国是岭南地区的第一个有记载的政权国家,采用封建制和郡县制并存的制度,' +
'它的建立保证了秦末乱世岭南地区社会秩序的稳定,有效的改善了岭南地区落后的政治、##济现状。\n';
common.refreshTmpDir();
// test that empty file will be created and have content added
const filename = join(common.tmpDir, 'append-sync.txt');
fs.appendFileSync(filename, data);
const fileData = fs.readFileSync(filename);
assert.strictEqual(Buffer.byteLength(data), fileData.length);
// test that appends data to a non empty file
const filename2 = join(common.tmpDir, 'append-sync2.txt');
fs.writeFileSync(filename2, currentFileData);
fs.appendFileSync(filename2, data);
const fileData2 = fs.readFileSync(filename2);
assert.strictEqual(Buffer.byteLength(data) + currentFileData.length,
fileData2.length);
// test that appendFileSync accepts buffers
const filename3 = join(common.tmpDir, 'append-sync3.txt');
fs.writeFileSync(filename3, currentFileData);
const buf = Buffer.from(data, 'utf8');
fs.appendFileSync(filename3, buf);
const fileData3 = fs.readFileSync(filename3);
assert.strictEqual(buf.length + currentFileData.length, fileData3.length);
// test that appendFile accepts numbers.
const filename4 = join(common.tmpDir, 'append-sync4.txt');
fs.writeFileSync(filename4, currentFileData, { mode: m });
fs.appendFileSync(filename4, num, { mode: m });
// windows permissions aren't unix
if (!common.isWindows) {
const st = fs.statSync(filename4);
assert.strictEqual(st.mode & 0o700, m);
}
const fileData4 = fs.readFileSync(filename4);
assert.strictEqual(Buffer.byteLength('' + num) + currentFileData.length,
fileData4.length);
// test that appendFile accepts file descriptors
const filename5 = join(common.tmpDir, 'append-sync5.txt');
fs.writeFileSync(filename5, currentFileData);
const filename5fd = fs.openSync(filename5, 'a+', 0o600);
fs.appendFileSync(filename5fd, data);
fs.closeSync(filename5fd);
const fileData5 = fs.readFileSync(filename5);
assert.strictEqual(Buffer.byteLength(data) + currentFileData.length,
fileData5.length);
//exit logic for cleanup
process.on('exit', function() {
fs.unlinkSync(filename);
fs.unlinkSync(filename2);
fs.unlinkSync(filename3);
fs.unlinkSync(filename4);
fs.unlinkSync(filename5);
});