// 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,
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// USE OR OTHER DEALINGS IN THE SOFTWARE.

var common = require('../common');
var assert = require('assert');
var fs = require('fs');

var filename = common.tmpDir + '/truncate-file.txt';

// 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');
  }));
})();
