11cb0ef41Sopenharmony_ci// Copyright Joyent, Inc. and other Node contributors. 21cb0ef41Sopenharmony_ci// 31cb0ef41Sopenharmony_ci// Permission is hereby granted, free of charge, to any person obtaining a 41cb0ef41Sopenharmony_ci// copy of this software and associated documentation files (the 51cb0ef41Sopenharmony_ci// "Software"), to deal in the Software without restriction, including 61cb0ef41Sopenharmony_ci// without limitation the rights to use, copy, modify, merge, publish, 71cb0ef41Sopenharmony_ci// distribute, sublicense, and/or sell copies of the Software, and to permit 81cb0ef41Sopenharmony_ci// persons to whom the Software is furnished to do so, subject to the 91cb0ef41Sopenharmony_ci// following conditions: 101cb0ef41Sopenharmony_ci// 111cb0ef41Sopenharmony_ci// The above copyright notice and this permission notice shall be included 121cb0ef41Sopenharmony_ci// in all copies or substantial portions of the Software. 131cb0ef41Sopenharmony_ci// 141cb0ef41Sopenharmony_ci// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 151cb0ef41Sopenharmony_ci// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 161cb0ef41Sopenharmony_ci// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN 171cb0ef41Sopenharmony_ci// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 181cb0ef41Sopenharmony_ci// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 191cb0ef41Sopenharmony_ci// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 201cb0ef41Sopenharmony_ci// USE OR OTHER DEALINGS IN THE SOFTWARE. 211cb0ef41Sopenharmony_ci 221cb0ef41Sopenharmony_ci'use strict'; 231cb0ef41Sopenharmony_ciconst common = require('../common'); 241cb0ef41Sopenharmony_ciconst assert = require('assert'); 251cb0ef41Sopenharmony_ci 261cb0ef41Sopenharmony_ci// If everything aligns so that you do a read(n) of exactly the 271cb0ef41Sopenharmony_ci// remaining buffer, then make sure that 'end' still emits. 281cb0ef41Sopenharmony_ci 291cb0ef41Sopenharmony_ciconst READSIZE = 100; 301cb0ef41Sopenharmony_ciconst PUSHSIZE = 20; 311cb0ef41Sopenharmony_ciconst PUSHCOUNT = 1000; 321cb0ef41Sopenharmony_ciconst HWM = 50; 331cb0ef41Sopenharmony_ci 341cb0ef41Sopenharmony_ciconst Readable = require('stream').Readable; 351cb0ef41Sopenharmony_ciconst r = new Readable({ 361cb0ef41Sopenharmony_ci highWaterMark: HWM 371cb0ef41Sopenharmony_ci}); 381cb0ef41Sopenharmony_ciconst rs = r._readableState; 391cb0ef41Sopenharmony_ci 401cb0ef41Sopenharmony_cir._read = push; 411cb0ef41Sopenharmony_ci 421cb0ef41Sopenharmony_cir.on('readable', function() { 431cb0ef41Sopenharmony_ci console.error('>> readable'); 441cb0ef41Sopenharmony_ci let ret; 451cb0ef41Sopenharmony_ci do { 461cb0ef41Sopenharmony_ci console.error(` > read(${READSIZE})`); 471cb0ef41Sopenharmony_ci ret = r.read(READSIZE); 481cb0ef41Sopenharmony_ci console.error(` < ${ret && ret.length} (${rs.length} remain)`); 491cb0ef41Sopenharmony_ci } while (ret && ret.length === READSIZE); 501cb0ef41Sopenharmony_ci 511cb0ef41Sopenharmony_ci console.error('<< after read()', 521cb0ef41Sopenharmony_ci ret && ret.length, 531cb0ef41Sopenharmony_ci rs.needReadable, 541cb0ef41Sopenharmony_ci rs.length); 551cb0ef41Sopenharmony_ci}); 561cb0ef41Sopenharmony_ci 571cb0ef41Sopenharmony_cir.on('end', common.mustCall(function() { 581cb0ef41Sopenharmony_ci assert.strictEqual(pushes, PUSHCOUNT + 1); 591cb0ef41Sopenharmony_ci})); 601cb0ef41Sopenharmony_ci 611cb0ef41Sopenharmony_cilet pushes = 0; 621cb0ef41Sopenharmony_cifunction push() { 631cb0ef41Sopenharmony_ci if (pushes > PUSHCOUNT) 641cb0ef41Sopenharmony_ci return; 651cb0ef41Sopenharmony_ci 661cb0ef41Sopenharmony_ci if (pushes++ === PUSHCOUNT) { 671cb0ef41Sopenharmony_ci console.error(' push(EOF)'); 681cb0ef41Sopenharmony_ci return r.push(null); 691cb0ef41Sopenharmony_ci } 701cb0ef41Sopenharmony_ci 711cb0ef41Sopenharmony_ci console.error(` push #${pushes}`); 721cb0ef41Sopenharmony_ci if (r.push(Buffer.allocUnsafe(PUSHSIZE))) 731cb0ef41Sopenharmony_ci setTimeout(push, 1); 741cb0ef41Sopenharmony_ci} 75