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test: refactor test-fs-append-file #10110

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test: refactor test-fs-append-file #10110

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87 changes: 44 additions & 43 deletions test/parallel/test-fs-append-file.js
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Original file line number Diff line number Diff line change
@@ -1,129 +1,130 @@
'use strict';
var common = require('../common');
var assert = require('assert');
var fs = require('fs');
var join = require('path').join;
const common = require('../common');
const assert = require('assert');
const fs = require('fs');
const join = require('path').join;

var filename = join(common.tmpDir, 'append.txt');
const filename = join(common.tmpDir, 'append.txt');

var currentFileData = 'ABCD';
const currentFileData = 'ABCD';

var n = 220;
var s = '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 n = 220;
const s = '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';

var ncallbacks = 0;
let ncallbacks = 0;

common.refreshTmpDir();

// test that empty file will be created and have content added
fs.appendFile(filename, s, function(e) {
if (e) throw e;
assert.ifError(e);

ncallbacks++;

fs.readFile(filename, function(e, buffer) {
if (e) throw e;
assert.ifError(e);
ncallbacks++;
assert.equal(Buffer.byteLength(s), buffer.length);
assert.strictEqual(Buffer.byteLength(s), buffer.length);
});
});

// test that appends data to a non empty file
var filename2 = join(common.tmpDir, 'append2.txt');
const filename2 = join(common.tmpDir, 'append2.txt');
fs.writeFileSync(filename2, currentFileData);

fs.appendFile(filename2, s, function(e) {
if (e) throw e;
assert.ifError(e);

ncallbacks++;

fs.readFile(filename2, function(e, buffer) {
if (e) throw e;
assert.ifError(e);
ncallbacks++;
assert.equal(Buffer.byteLength(s) + currentFileData.length, buffer.length);
assert.strictEqual(Buffer.byteLength(s) + currentFileData.length,
buffer.length);
});
});

// test that appendFile accepts buffers
var filename3 = join(common.tmpDir, 'append3.txt');
const filename3 = join(common.tmpDir, 'append3.txt');
fs.writeFileSync(filename3, currentFileData);

var buf = Buffer.from(s, 'utf8');
const buf = Buffer.from(s, 'utf8');

fs.appendFile(filename3, buf, function(e) {
if (e) throw e;
assert.ifError(e);

ncallbacks++;

fs.readFile(filename3, function(e, buffer) {
if (e) throw e;
assert.ifError(e);
ncallbacks++;
assert.equal(buf.length + currentFileData.length, buffer.length);
assert.strictEqual(buf.length + currentFileData.length, buffer.length);
});
});

// test that appendFile accepts numbers.
var filename4 = join(common.tmpDir, 'append4.txt');
const filename4 = join(common.tmpDir, 'append4.txt');
fs.writeFileSync(filename4, currentFileData);

var m = 0o600;
const m = 0o600;
fs.appendFile(filename4, n, { mode: m }, function(e) {
if (e) throw e;
assert.ifError(e);

ncallbacks++;

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

fs.readFile(filename4, function(e, buffer) {
if (e) throw e;
assert.ifError(e);
ncallbacks++;
assert.equal(Buffer.byteLength('' + n) + currentFileData.length,
buffer.length);
assert.strictEqual(Buffer.byteLength('' + n) + currentFileData.length,
buffer.length);
});
});

// test that appendFile accepts file descriptors
var filename5 = join(common.tmpDir, 'append5.txt');
const filename5 = join(common.tmpDir, 'append5.txt');
fs.writeFileSync(filename5, currentFileData);

fs.open(filename5, 'a+', function(e, fd) {
if (e) throw e;
assert.ifError(e);

ncallbacks++;

fs.appendFile(fd, s, function(e) {
if (e) throw e;
assert.ifError(e);

ncallbacks++;

fs.close(fd, function(e) {
if (e) throw e;
assert.ifError(e);

ncallbacks++;

fs.readFile(filename5, function(e, buffer) {
if (e) throw e;
assert.ifError(e);

ncallbacks++;
assert.equal(Buffer.byteLength(s) + currentFileData.length,
buffer.length);
assert.strictEqual(Buffer.byteLength(s) + currentFileData.length,
buffer.length);
});
});
});
});

process.on('exit', function() {
assert.equal(12, ncallbacks);
assert.strictEqual(12, ncallbacks);

fs.unlinkSync(filename);
fs.unlinkSync(filename2);
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