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// 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.
'use strict';
require('../common');
const assert = require('assert');
const Readable = require('stream').Readable;
class MyStream extends Readable {
constructor(options) {
super(options);
this._chunks = 3;
}
_read(n) {
switch (this._chunks--) {
case 0:
return this.push(null);
case 1:
return setTimeout(() => {
this.push('last chunk');
}, 100);
case 2:
return this.push('second to last chunk');
case 3:
return process.nextTick(() => {
this.push('first chunk');
});
default:
throw new Error('?');
}
}
}
const ms = new MyStream();
const results = [];
ms.on('readable', function() {
let chunk;
while (null !== (chunk = ms.read()))
results.push(String(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');
});
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