| // 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'); |
| var assert = require('assert'); |
| |
| var Stream = require('stream'); |
| var Readable = Stream.Readable; |
| |
| var r = new Readable(); |
| var N = 256; |
| var reads = 0; |
| r._read = function(n) { |
| return r.push(++reads === N ? null : new Buffer(1)); |
| }; |
| |
| var rended = false; |
| r.on('end', function() { |
| rended = true; |
| }); |
| |
| var w = new Stream(); |
| w.writable = true; |
| var writes = 0; |
| var buffered = 0; |
| w.write = function(c) { |
| writes += c.length; |
| buffered += c.length; |
| process.nextTick(drain); |
| return false; |
| }; |
| |
| function drain() { |
| assert(buffered <= 2); |
| buffered = 0; |
| w.emit('drain'); |
| } |
| |
| |
| var wended = false; |
| w.end = function() { |
| wended = true; |
| }; |
| |
| // Just for kicks, let's mess with the drain count. |
| // This verifies that even if it gets negative in the |
| // pipe() cleanup function, we'll still function properly. |
| r.on('readable', function() { |
| w.emit('drain'); |
| }); |
| |
| r.pipe(w); |
| process.on('exit', function() { |
| assert(rended); |
| assert(wended); |
| console.error('ok'); |
| }); |