1// Copyright Joyent, Inc. and other Node contributors. 2// 3// Permission is hereby granted, free of charge, to any person obtaining a 4// copy of this software and associated documentation files (the 5// "Software"), to deal in the Software without restriction, including 6// without limitation the rights to use, copy, modify, merge, publish, 7// distribute, sublicense, and/or sell copies of the Software, and to permit 8// persons to whom the Software is furnished to do so, subject to the 9// following conditions: 10// 11// The above copyright notice and this permission notice shall be included 12// in all copies or substantial portions of the Software. 13// 14// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 15// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 16// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN 17// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 18// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 19// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 20// USE OR OTHER DEALINGS IN THE SOFTWARE. 21 22'use strict'; 23const common = require('../common'); 24const Readable = require('stream').Readable; 25 26// This tests synchronous read callbacks and verifies that even if they nest 27// heavily the process handles it without an error 28 29const r = new Readable(); 30const N = 256 * 1024; 31 32let reads = 0; 33r._read = function(n) { 34 const chunk = reads++ === N ? null : Buffer.allocUnsafe(1); 35 r.push(chunk); 36}; 37 38r.on('readable', function onReadable() { 39 if (!(r.readableLength % 256)) 40 console.error('readable', r.readableLength); 41 r.read(N * 2); 42}); 43 44r.on('end', common.mustCall()); 45 46r.read(0); 47