test-stream2-finish-pipe.js

// 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';
require('../common');
const stream = require('stream');

const r = new stream.Readable();
r._read = function(size) {
  r.push(Buffer.allocUnsafe(size));
};

const w = new stream.Writable();
w._write = function(data, encoding, cb) {
  process.nextTick(cb, null);
};

r.pipe(w);

// end() must be called in nextTick or a WRITE_AFTER_END error occurs.
process.nextTick(() => {
  // This might sound unrealistic, but it happens in net.js. When
  // socket.allowHalfOpen === false, EOF will cause .destroySoon() call which
  // ends the writable side of net.Socket.
  w.end();
});