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'use strict';
require('../common');
const assert = require('assert');
const Readable = require('stream').Readable;
const 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('?');
}
};
const ms = new MyStream();
const results = [];
ms.on('readable', function() {
let chunk;
while (null !== (chunk = ms.read()))
results.push(chunk + '');
});
const expect = [ 'first chunksecond to last chunk', 'last chunk' ];
process.on('exit', function() {
assert.strictEqual(ms._chunks, -1);
assert.deepStrictEqual(results, expect);
console.log('ok');
});