| // Copyright Joyent, Inc. and other Node contributors. |
| // |
| // Permission is hereby granted, free of charge, to any person obtaining a |
| // copy of this software and associated documentation files (the |
| // "Software"), to deal in the Software without restriction, including |
| // without limitation the rights to use, copy, modify, merge, publish, |
| // distribute, sublicense, and/or sell copies of the Software, and to permit |
| // persons to whom the Software is furnished to do so, subject to the |
| // following conditions: |
| // |
| // The above copyright notice and this permission notice shall be included |
| // in all copies or substantial portions of the Software. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN |
| // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
| // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
| // USE OR OTHER DEALINGS IN THE SOFTWARE. |
| |
| var common = require('../common'); |
| var assert = require('assert'); |
| var path = require('path'); |
| var fs = require('fs'); |
| var tmp = common.tmpDir; |
| var filename = path.resolve(tmp, 'truncate-file.txt'); |
| var data = new Buffer(1024 * 16); |
| data.fill('x'); |
| |
| var stat; |
| |
| // truncateSync |
| fs.writeFileSync(filename, data); |
| stat = fs.statSync(filename); |
| assert.equal(stat.size, 1024 * 16); |
| |
| fs.truncateSync(filename, 1024); |
| stat = fs.statSync(filename); |
| assert.equal(stat.size, 1024); |
| |
| fs.truncateSync(filename); |
| stat = fs.statSync(filename); |
| assert.equal(stat.size, 0); |
| |
| // ftruncateSync |
| fs.writeFileSync(filename, data); |
| var fd = fs.openSync(filename, 'r+'); |
| |
| stat = fs.statSync(filename); |
| assert.equal(stat.size, 1024 * 16); |
| |
| fs.ftruncateSync(fd, 1024); |
| stat = fs.statSync(filename); |
| assert.equal(stat.size, 1024); |
| |
| fs.ftruncateSync(fd); |
| stat = fs.statSync(filename); |
| assert.equal(stat.size, 0); |
| |
| fs.closeSync(fd); |
| |
| // async tests |
| var success = 0; |
| testTruncate(function(er) { |
| if (er) throw er; |
| success++; |
| testFtruncate(function(er) { |
| if (er) throw er; |
| success++; |
| }); |
| }); |
| |
| process.on('exit', function() { |
| assert.equal(success, 2); |
| console.log('ok'); |
| }); |
| |
| function testTruncate(cb) { |
| fs.writeFile(filename, data, function(er) { |
| if (er) return cb(er); |
| fs.stat(filename, function(er, stat) { |
| if (er) return cb(er); |
| assert.equal(stat.size, 1024 * 16); |
| |
| fs.truncate(filename, 1024, function(er) { |
| if (er) return cb(er); |
| fs.stat(filename, function(er, stat) { |
| if (er) return cb(er); |
| assert.equal(stat.size, 1024); |
| |
| fs.truncate(filename, function(er) { |
| if (er) return cb(er); |
| fs.stat(filename, function(er, stat) { |
| if (er) return cb(er); |
| assert.equal(stat.size, 0); |
| cb(); |
| }); |
| }); |
| }); |
| }); |
| }); |
| }); |
| } |
| |
| |
| function testFtruncate(cb) { |
| fs.writeFile(filename, data, function(er) { |
| if (er) return cb(er); |
| fs.stat(filename, function(er, stat) { |
| if (er) return cb(er); |
| assert.equal(stat.size, 1024 * 16); |
| |
| fs.open(filename, 'w', function(er, fd) { |
| if (er) return cb(er); |
| fs.ftruncate(fd, 1024, function(er) { |
| if (er) return cb(er); |
| fs.stat(filename, function(er, stat) { |
| if (er) return cb(er); |
| assert.equal(stat.size, 1024); |
| |
| fs.ftruncate(fd, function(er) { |
| if (er) return cb(er); |
| fs.stat(filename, function(er, stat) { |
| if (er) return cb(er); |
| assert.equal(stat.size, 0); |
| fs.close(fd, cb); |
| }); |
| }); |
| }); |
| }); |
| }); |
| }); |
| }); |
| } |