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nodejs/test/parallel/test-fs-write-stream-change-open.js
isaacs 3e1b1dd4a9 Remove excessive copyright/license boilerplate
The copyright and license notice is already in the LICENSE file.  There
is no justifiable reason to also require that it be included in every
file, since the individual files are not individually distributed except
as part of the entire package.
2015-01-12 15:30:28 -08:00

32 lines
777 B
JavaScript

var common = require('../common');
var assert = require('assert');
var path = require('path'),
fs = require('fs');
var file = path.join(common.tmpDir, 'write.txt');
var stream = fs.WriteStream(file),
_fs_close = fs.close,
_fs_open = fs.open;
// change the fs.open with an identical function after the WriteStream
// has pushed it onto its internal action queue, but before it's
// returned. This simulates AOP-style extension of the fs lib.
fs.open = function() {
return _fs_open.apply(fs, arguments);
};
fs.close = function(fd) {
assert.ok(fd, 'fs.close must not be called with an undefined fd.');
fs.close = _fs_close;
fs.open = _fs_open;
}
stream.write('foo');
stream.end();
process.on('exit', function() {
assert.equal(fs.open, _fs_open);
});