File: test-fs-write.js

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// 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 Buffer = require('buffer').Buffer;
var fs = require('fs');
var fn = path.join(common.tmpDir, 'write.txt');
var fn2 = path.join(common.tmpDir, 'write2.txt');
var expected = 'ümlaut.';
var constants = require('constants');
var found, found2;

fs.open(fn, 'w', 0644, function(err, fd) {
  if (err) throw err;
  console.log('open done');
  fs.write(fd, '', 0, 'utf8', function(err, written) {
    assert.equal(0, written);
  });
  fs.write(fd, expected, 0, 'utf8', function(err, written) {
    console.log('write done');
    if (err) throw err;
    assert.equal(Buffer.byteLength(expected), written);
    fs.closeSync(fd);
    found = fs.readFileSync(fn, 'utf8');
    console.log('expected: "%s"', expected);
    console.log('found: "%s"', found);
    fs.unlinkSync(fn);
  });
});


fs.open(fn2, constants.O_CREAT | constants.O_WRONLY | constants.O_TRUNC, 0644,
    function(err, fd) {
      if (err) throw err;
      console.log('open done');
      fs.write(fd, '', 0, 'utf8', function(err, written) {
        assert.equal(0, written);
      });
      fs.write(fd, expected, 0, 'utf8', function(err, written) {
        console.log('write done');
        if (err) throw err;
        assert.equal(Buffer.byteLength(expected), written);
        fs.closeSync(fd);
        found2 = fs.readFileSync(fn2, 'utf8');
        console.log('expected: "%s"', expected);
        console.log('found: "%s"', found2);
        fs.unlinkSync(fn2);
      });
    });


process.on('exit', function() {
  assert.equal(expected, found);
  assert.equal(expected, found2);
});