| // 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. |
| |
| var common = require('../common.js'); |
| var assert = require('assert'); |
| |
| // If everything aligns so that you do a read(n) of exactly the |
| // remaining buffer, then make sure that 'end' still emits. |
| |
| var READSIZE = 100; |
| var PUSHSIZE = 20; |
| var PUSHCOUNT = 1000; |
| var HWM = 50; |
| |
| var Readable = require('stream').Readable; |
| var r = new Readable({ |
| highWaterMark: HWM |
| }); |
| var rs = r._readableState; |
| |
| r._read = push; |
| |
| r.on('readable', function() { |
| console.error('>> readable'); |
| do { |
| console.error(' > read(%d)', READSIZE); |
| var ret = r.read(READSIZE); |
| console.error(' < %j (%d remain)', ret && ret.length, rs.length); |
| } while (ret && ret.length === READSIZE); |
| |
| console.error('<< after read()', |
| ret && ret.length, |
| rs.needReadable, |
| rs.length); |
| }); |
| |
| var endEmitted = false; |
| r.on('end', function() { |
| endEmitted = true; |
| console.error('end'); |
| }); |
| |
| var pushes = 0; |
| function push() { |
| if (pushes > PUSHCOUNT) |
| return; |
| |
| if (pushes++ === PUSHCOUNT) { |
| console.error(' push(EOF)'); |
| return r.push(null); |
| } |
| |
| console.error(' push #%d', pushes); |
| if (r.push(new Buffer(PUSHSIZE))) |
| setTimeout(push); |
| } |
| |
| // start the flow |
| var ret = r.read(0); |
| |
| process.on('exit', function() { |
| assert.equal(pushes, PUSHCOUNT + 1); |
| assert(endEmitted); |
| }); |