node/test/parallel/test-fs-truncate-GH-6233.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

27 lines
743 B
JavaScript

'use strict';
var common = require('../common');
var assert = require('assert');
var fs = require('fs');
var filename = common.tmpDir + '/truncate-file.txt';
common.refreshTmpDir();
// Synchronous test.
(function() {
fs.writeFileSync(filename, '0123456789');
assert.equal(fs.readFileSync(filename).toString(), '0123456789');
fs.truncateSync(filename, 5);
assert.equal(fs.readFileSync(filename).toString(), '01234');
})();
// Asynchronous test.
(function() {
fs.writeFileSync(filename, '0123456789');
assert.equal(fs.readFileSync(filename).toString(), '0123456789');
fs.truncate(filename, 5, common.mustCall(function(err) {
if (err) throw err;
assert.equal(fs.readFileSync(filename).toString(), '01234');
}));
})();