text: // 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.
  
  'use strict';
  const common = require('../common');
  const assert = require('assert');
  const Stream = require('stream').Stream;
  
  {
    const source = new Stream();
    const dest = new Stream();
  
    source.pipe(dest);
  
    let gotErr = null;
    source.on('error', function(err) {
      gotErr = err;
    });
  
    const err = new Error('This stream turned into bacon.');
    source.emit('error', err);
    assert.strictEqual(gotErr, err);
  }
  
  {
    const source = new Stream();
    const dest = new Stream();
  
    source.pipe(dest);
  
    const err = new Error('This stream turned into bacon.');
  
    let gotErr = null;
    try {
      source.emit('error', err);
    } catch (e) {
      gotErr = e;
    }
  
    assert.strictEqual(gotErr, err);
  }
  
  {
    const R = Stream.Readable;
    const W = Stream.Writable;
  
    const r = new R();
    const w = new W();
    let removed = false;
  
    r._read = common.mustCall(function() {
      setTimeout(common.mustCall(function() {
        assert(removed);
        assert.throws(function() {
          w.emit('error', new Error('fail'));
        }, /^Error: fail$/);
      }), 1);
    });
  
    w.on('error', myOnError);
    r.pipe(w);
    w.removeListener('error', myOnError);
    removed = true;
  
    function myOnError() {
      throw new Error('this should not happen');
    }
  }
  
  {
    const R = Stream.Readable;
    const W = Stream.Writable;
  
    const r = new R();
    const w = new W();
    let removed = false;
  
    r._read = common.mustCall(function() {
      setTimeout(common.mustCall(function() {
        assert(removed);
        w.emit('error', new Error('fail'));
      }), 1);
    });
  
    w.on('error', common.mustCall());
    w._write = common.noop;
  
    r.pipe(w);
    // Removing some OTHER random listener should not do anything
    w.removeListener('error', common.noop);
    removed = true;
  }
  