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67 lines
2.2 KiB
67 lines
2.2 KiB
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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'use strict';
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require('../common');
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const assert = require('assert');
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const Readable = require('stream').Readable;
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const util = require('util');
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util.inherits(MyStream, Readable);
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function MyStream(options) {
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Readable.call(this, options);
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this._chunks = 3;
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}
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MyStream.prototype._read = function(n) {
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switch (this._chunks--) {
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case 0:
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return this.push(null);
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case 1:
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return setTimeout(function() {
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this.push('last chunk');
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}.bind(this), 100);
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case 2:
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return this.push('second to last chunk');
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case 3:
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return process.nextTick(function() {
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this.push('first chunk');
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}.bind(this));
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default:
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throw new Error('?');
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}
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};
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const ms = new MyStream();
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const results = [];
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ms.on('readable', function() {
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let chunk;
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while (null !== (chunk = ms.read()))
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results.push(String(chunk));
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});
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const expect = [ 'first chunksecond to last chunk', 'last chunk' ];
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process.on('exit', function() {
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assert.strictEqual(ms._chunks, -1);
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assert.deepStrictEqual(results, expect);
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console.log('ok');
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});
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