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test: refactor test-fs-append-file-sync
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Update var to const.

PR-URL: #10056
Reviewed-By: Anna Henningsen <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
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cByst authored and MylesBorins committed Dec 21, 2016
1 parent 53db317 commit 2eec6bd
Showing 1 changed file with 28 additions and 29 deletions.
57 changes: 28 additions & 29 deletions test/parallel/test-fs-append-file-sync.js
Original file line number Diff line number Diff line change
@@ -1,80 +1,79 @@
'use strict';
var common = require('../common');
var assert = require('assert');
var join = require('path').join;
var fs = require('fs');

var currentFileData = 'ABCD';

var num = 220;
var 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';
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
var filename = join(common.tmpDir, 'append-sync.txt');
const filename = join(common.tmpDir, 'append-sync.txt');

fs.appendFileSync(filename, data);

var fileData = fs.readFileSync(filename);
const fileData = fs.readFileSync(filename);

assert.strictEqual(Buffer.byteLength(data), fileData.length);

// test that appends data to a non empty file
var filename2 = join(common.tmpDir, 'append-sync2.txt');
const filename2 = join(common.tmpDir, 'append-sync2.txt');
fs.writeFileSync(filename2, currentFileData);

fs.appendFileSync(filename2, data);

var fileData2 = fs.readFileSync(filename2);
const fileData2 = fs.readFileSync(filename2);

assert.strictEqual(Buffer.byteLength(data) + currentFileData.length,
fileData2.length);

// test that appendFileSync accepts buffers
var filename3 = join(common.tmpDir, 'append-sync3.txt');
const filename3 = join(common.tmpDir, 'append-sync3.txt');
fs.writeFileSync(filename3, currentFileData);

var buf = Buffer.from(data, 'utf8');
const buf = Buffer.from(data, 'utf8');
fs.appendFileSync(filename3, buf);

var fileData3 = fs.readFileSync(filename3);
const fileData3 = fs.readFileSync(filename3);

assert.strictEqual(buf.length + currentFileData.length, fileData3.length);

// test that appendFile accepts numbers.
var filename4 = join(common.tmpDir, 'append-sync4.txt');
const filename4 = join(common.tmpDir, 'append-sync4.txt');
fs.writeFileSync(filename4, currentFileData, { mode: m });

var m = 0o600;
fs.appendFileSync(filename4, num, { mode: m });

// windows permissions aren't unix
if (!common.isWindows) {
var st = fs.statSync(filename4);
const st = fs.statSync(filename4);
assert.strictEqual(st.mode & 0o700, m);
}

var fileData4 = fs.readFileSync(filename4);
const fileData4 = fs.readFileSync(filename4);

assert.strictEqual(Buffer.byteLength('' + num) + currentFileData.length,
fileData4.length);

// test that appendFile accepts file descriptors
var filename5 = join(common.tmpDir, 'append-sync5.txt');
const filename5 = join(common.tmpDir, 'append-sync5.txt');
fs.writeFileSync(filename5, currentFileData);

var filename5fd = fs.openSync(filename5, 'a+', 0o600);
const filename5fd = fs.openSync(filename5, 'a+', 0o600);
fs.appendFileSync(filename5fd, data);
fs.closeSync(filename5fd);

var fileData5 = fs.readFileSync(filename5);
const fileData5 = fs.readFileSync(filename5);

assert.strictEqual(Buffer.byteLength(data) + currentFileData.length,
fileData5.length);
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