1// Copyright Joyent, Inc. and other Node contributors. 2// 3// Permission is hereby granted, free of charge, to any person obtaining a 4// copy of this software and associated documentation files (the 5// "Software"), to deal in the Software without restriction, including 6// without limitation the rights to use, copy, modify, merge, publish, 7// distribute, sublicense, and/or sell copies of the Software, and to permit 8// persons to whom the Software is furnished to do so, subject to the 9// following conditions: 10// 11// The above copyright notice and this permission notice shall be included 12// in all copies or substantial portions of the Software. 13// 14// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 15// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 16// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN 17// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 18// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 19// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 20// USE OR OTHER DEALINGS IN THE SOFTWARE. 21 22'use strict'; 23require('../common'); 24const assert = require('assert'); 25const path = require('path'); 26const fs = require('fs'); 27 28const tmpdir = require('../common/tmpdir'); 29 30const file = path.join(tmpdir.path, 'write.txt'); 31 32tmpdir.refresh(); 33 34const stream = fs.WriteStream(file); 35const _fs_close = fs.close; 36const _fs_open = fs.open; 37 38// Change the fs.open with an identical function after the WriteStream 39// has pushed it onto its internal action queue, but before it's 40// returned. This simulates AOP-style extension of the fs lib. 41fs.open = function() { 42 return _fs_open.apply(fs, arguments); 43}; 44 45fs.close = function(fd) { 46 assert.ok(fd, 'fs.close must not be called with an undefined fd.'); 47 fs.close = _fs_close; 48 fs.open = _fs_open; 49 fs.closeSync(fd); 50}; 51 52stream.write('foo'); 53stream.end(); 54 55process.on('exit', function() { 56 assert.strictEqual(fs.open, _fs_open); 57}); 58