csrc/node-v0.10.24/test/simple/test-file-read-noexist.js

// Copyright Joyent, Inc. and other Node contributors.
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//
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// in all copies or substantial portions of the Software.
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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var common = require('../common');
var assert = require('assert');
var path = require('path');
var fs = require('fs');
var got_error = false;

var filename = path.join(common.fixturesDir, 'does_not_exist.txt');
fs.readFile(filename, 'raw', function(err, content) {
  if (err) {
    got_error = true;
  } else {
    common.debug('cat returned some content: ' + content);
    common.debug('this shouldn\'t happen as the file doesn\'t exist...');
    assert.equal(true, false);
  }
});

process.on('exit', function() {
  console.log('done');
  assert.equal(true, got_error);
});