// Copyright Joyent, Inc. and other Node contributors.
//
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// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
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// 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 strict';
const common = require('../common');

// Test that readFile works even when stat returns size 0.

const assert = require('assert');
const fs = require('fs');

const dataExpected = fs.readFileSync(__filename, 'utf8');

// sometimes stat returns size=0, but it's a lie.
fs._fstat = fs.fstat;
fs._fstatSync = fs.fstatSync;

fs.fstat = (fd, cb) => {
  fs._fstat(fd, (er, st) => {
    if (er) return cb(er);
    st.size = 0;
    return cb(er, st);
  });
};

fs.fstatSync = (fd) => {
  const st = fs._fstatSync(fd);
  st.size = 0;
  return st;
};

const d = fs.readFileSync(__filename, 'utf8');
assert.strictEqual(d, dataExpected);

fs.readFile(__filename, 'utf8', common.mustCall((er, d) => {
  assert.strictEqual(d, dataExpected);
}));