fe2188620dPR-URL: https://github.com/nodejs/node/pull/17070 Reviewed-By: Michaël Zasso <targos@protonmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Lance Ball <lball@redhat.com> Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com> Reviewed-By: Khaidi Chu <i@2333.moe>
46 lines
1,010 B
JavaScript
46 lines
1,010 B
JavaScript
'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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class MyStream extends Readable {
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constructor(options) {
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super(options);
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this._chunks = 3;
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}
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_read(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(() => {
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this.push('last chunk');
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}, 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(() => {
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this.push('first chunk');
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});
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default:
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throw new Error('?');
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}
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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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