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nodejs/test/parallel/test-fs-append-file.js
Rich Trott 7c79490bfb test: only refresh tmpDir for tests that need it
Expose `common.refreshTmpDir()` and only call it
for tests that use common.tmpDir or common.PIPE.

A positive side effect is the removal of a code
smell where child processes were detected by the
presence of `.send()`. Now each process can decide
for itself if it needs to refresh tmpDir.

PR-URL: https://github.com/nodejs/io.js/pull/1954
Reviewed-By: Rod Vagg <rod@vagg.org>
Reviewed-By: Johan Bergström <bugs@bergstroem.nu>
2015-06-13 22:27:17 -07:00

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'use strict';
var common = require('../common');
var assert = require('assert');
var fs = require('fs');
var join = require('path').join;
var filename = join(common.tmpDir, 'append.txt');
common.error('appending to ' + filename);
var 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';
var 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;
ncallbacks++;
common.error('appended to file');
fs.readFile(filename, function(e, buffer) {
if (e) throw e;
common.error('file read');
ncallbacks++;
assert.equal(Buffer.byteLength(s), buffer.length);
});
});
// test that appends data to a non empty file
var filename2 = join(common.tmpDir, 'append2.txt');
fs.writeFileSync(filename2, currentFileData);
fs.appendFile(filename2, s, function(e) {
if (e) throw e;
ncallbacks++;
common.error('appended to file2');
fs.readFile(filename2, function(e, buffer) {
if (e) throw e;
common.error('file2 read');
ncallbacks++;
assert.equal(Buffer.byteLength(s) + currentFileData.length, buffer.length);
});
});
// test that appendFile accepts buffers
var filename3 = join(common.tmpDir, 'append3.txt');
fs.writeFileSync(filename3, currentFileData);
var buf = new Buffer(s, 'utf8');
common.error('appending to ' + filename3);
fs.appendFile(filename3, buf, function(e) {
if (e) throw e;
ncallbacks++;
common.error('appended to file3');
fs.readFile(filename3, function(e, buffer) {
if (e) throw e;
common.error('file3 read');
ncallbacks++;
assert.equal(buf.length + currentFileData.length, buffer.length);
});
});
// test that appendFile accepts numbers.
var filename4 = join(common.tmpDir, 'append4.txt');
fs.writeFileSync(filename4, currentFileData);
common.error('appending to ' + filename4);
var m = 0o600;
fs.appendFile(filename4, n, { mode: m }, function(e) {
if (e) throw e;
ncallbacks++;
common.error('appended to file4');
// windows permissions aren't unix
if (process.platform !== 'win32') {
var st = fs.statSync(filename4);
assert.equal(st.mode & 0o700, m);
}
fs.readFile(filename4, function(e, buffer) {
if (e) throw e;
common.error('file4 read');
ncallbacks++;
assert.equal(Buffer.byteLength('' + n) + currentFileData.length,
buffer.length);
});
});
process.on('exit', function() {
common.error('done');
assert.equal(8, ncallbacks);
fs.unlinkSync(filename);
fs.unlinkSync(filename2);
fs.unlinkSync(filename3);
fs.unlinkSync(filename4);
});