(function () {
  // Copyright Joyent, Inc. and other Node contributors.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a
  // copy of this software and associated documentation files (the
  // "Software"), to deal in the Software without restriction, including
  // without limitation the rights to use, copy, modify, merge, publish,
  // distribute, sublicense, and/or sell copies of the Software, and to permit
  // 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,
  // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  // USE OR OTHER DEALINGS IN THE SOFTWARE.

  /*<replacement>*/
  var bufferShim = require('safe-buffer').Buffer;
  /*</replacement>*/
  require('../common');
  var assert = require('assert/');

  var stream = require('../../');
  var util = require('util');

  function TestWriter() {
    stream.Writable.call(this);
  }
  util.inherits(TestWriter, stream.Writable);

  TestWriter.prototype._write = function (buffer, encoding, callback) {
    console.log('write called');
    // super slow write stream (callback never called)
  };

  var dest = new TestWriter();

  function TestReader(id) {
    stream.Readable.call(this);
    this.reads = 0;
  }
  util.inherits(TestReader, stream.Readable);

  TestReader.prototype._read = function (size) {
    this.reads += 1;
    this.push(bufferShim.alloc(size));
  };

  var src1 = new TestReader();
  var src2 = new TestReader();

  src1.pipe(dest);

  src1.once('readable', function () {
    process.nextTick(function () {

      src2.pipe(dest);

      src2.once('readable', function () {
        process.nextTick(function () {

          src1.unpipe(dest);
        });
      });
    });
  });

  process.on('exit', function () {
    assert.strictEqual(src1.reads, 2);
    assert.strictEqual(src2.reads, 2);
  });
})();