| // 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 Readable = require('stream').Readable; |
| var util = require('util'); |
| |
| util.inherits(MyStream, Readable); |
| function MyStream(options) { |
| Readable.call(this, options); |
| this._chunks = 3; |
| } |
| |
| MyStream.prototype._read = function(n) { |
| switch (this._chunks--) { |
| case 0: |
| return this.push(null); |
| case 1: |
| return setTimeout(function() { |
| this.push('last chunk'); |
| }.bind(this), 100); |
| case 2: |
| return this.push('second to last chunk'); |
| case 3: |
| return process.nextTick(function() { |
| this.push('first chunk'); |
| }.bind(this)); |
| default: |
| throw new Error('?'); |
| } |
| }; |
| |
| var ms = new MyStream(); |
| var results = []; |
| ms.on('readable', function() { |
| var chunk; |
| while (null !== (chunk = ms.read())) |
| results.push(chunk + ''); |
| }); |
| |
| var expect = [ 'first chunksecond to last chunk', 'last chunk' ]; |
| process.on('exit', function() { |
| assert.equal(ms._chunks, -1); |
| assert.deepEqual(results, expect); |
| console.log('ok'); |
| }); |