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'); });