0
0
mirror of https://github.com/nodejs/node.git synced 2024-12-01 16:10:02 +01:00
nodejs/test/parallel/test-fs-sir-writes-alot.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

48 lines
1.2 KiB
JavaScript

'use strict';
var common = require('../common');
var fs = require('fs');
var assert = require('assert');
var join = require('path').join;
var filename = join(common.tmpDir, 'out.txt');
common.refreshTmpDir();
var fd = fs.openSync(filename, 'w');
var line = 'aaaaaaaaaaaaaaaaaaaaaaaaaaaa\n';
var N = 10240, complete = 0;
for (var i = 0; i < N; i++) {
// Create a new buffer for each write. Before the write is actually
// executed by the thread pool, the buffer will be collected.
var buffer = new Buffer(line);
fs.write(fd, buffer, 0, buffer.length, null, function(er, written) {
complete++;
if (complete === N) {
fs.closeSync(fd);
var s = fs.createReadStream(filename);
s.on('data', testBuffer);
}
});
}
var bytesChecked = 0;
function testBuffer(b) {
for (var i = 0; i < b.length; i++) {
bytesChecked++;
if (b[i] !== 'a'.charCodeAt(0) && b[i] !== '\n'.charCodeAt(0)) {
throw new Error('invalid char ' + i + ',' + b[i]);
}
}
}
process.on('exit', function() {
// Probably some of the writes are going to overlap, so we can't assume
// that we get (N * line.length). Let's just make sure we've checked a
// few...
assert.ok(bytesChecked > 1000);
});