123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144
// deno-fmt-ignore-file// deno-lint-ignore-file
// Copyright Joyent and Node contributors. All rights reserved. MIT license.// Taken from Node 16.13.0// This file is automatically generated by "node/_tools/setup.ts". Do not modify this file manually
// 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';require('../common');const assert = require('assert');const { Readable, Writable } = require('stream');
const EE = require('events').EventEmitter;

// A mock thing a bit like the net.Socket/tcp_wrap.handle interaction
const stream = new Readable({  highWaterMark: 16,  encoding: 'utf8'});
const source = new EE();
stream._read = function() {  console.error('stream._read');  readStart();};
let ended = false;stream.on('end', function() {  ended = true;});
source.on('data', function(chunk) {  const ret = stream.push(chunk);  console.error('data', stream.readableLength);  if (!ret)    readStop();});
source.on('end', function() {  stream.push(null);});
let reading = false;
function readStart() {  console.error('readStart');  reading = true;}
function readStop() {  console.error('readStop');  reading = false;  process.nextTick(function() {    const r = stream.read();    if (r !== null)      writer.write(r);  });}
const writer = new Writable({  decodeStrings: false});
const written = [];
const expectWritten =  [ 'asdfgasdfgasdfgasdfg',    'asdfgasdfgasdfgasdfg',    'asdfgasdfgasdfgasdfg',    'asdfgasdfgasdfgasdfg',    'asdfgasdfgasdfgasdfg',    'asdfgasdfgasdfgasdfg' ];
writer._write = function(chunk, encoding, cb) {  console.error(`WRITE ${chunk}`);  written.push(chunk);  process.nextTick(cb);};
writer.on('finish', finish);

// Now emit some chunks.
const chunk = 'asdfg';
let set = 0;readStart();data();function data() {  assert(reading);  source.emit('data', chunk);  assert(reading);  source.emit('data', chunk);  assert(reading);  source.emit('data', chunk);  assert(reading);  source.emit('data', chunk);  assert(!reading);  if (set++ < 5)    setTimeout(data, 10);  else    end();}
function finish() {  console.error('finish');  assert.deepStrictEqual(written, expectWritten);  console.log('ok');}
function end() {  source.emit('end');  assert(!reading);  writer.end(stream.read());  setImmediate(function() {    assert(ended);  });}