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1b75b81649
PR-URL: https://github.com/nodejs/node/pull/24426 Reviewed-By: Michaël Zasso <targos@protonmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com> Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com> Reviewed-By: Ujjwal Sharma <usharma1998@gmail.com>
123 lines
3.1 KiB
JavaScript
123 lines
3.1 KiB
JavaScript
// 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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// Test that having a bunch of streams piping in parallel
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// doesn't break anything.
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require('../common');
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const assert = require('assert');
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const Stream = require('stream').Stream;
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const rr = [];
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const ww = [];
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const cnt = 100;
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const chunks = 1000;
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const chunkSize = 250;
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const data = Buffer.allocUnsafe(chunkSize);
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let wclosed = 0;
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let rclosed = 0;
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function FakeStream() {
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Stream.apply(this);
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this.wait = false;
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this.writable = true;
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this.readable = true;
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}
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FakeStream.prototype = Object.create(Stream.prototype);
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FakeStream.prototype.write = function(chunk) {
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console.error(this.ID, 'write', this.wait);
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if (this.wait) {
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process.nextTick(this.emit.bind(this, 'drain'));
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}
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this.wait = !this.wait;
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return this.wait;
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};
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FakeStream.prototype.end = function() {
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this.emit('end');
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process.nextTick(this.close.bind(this));
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};
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// noop - closes happen automatically on end.
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FakeStream.prototype.close = function() {
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this.emit('close');
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};
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// expect all streams to close properly.
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process.on('exit', function() {
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assert.strictEqual(wclosed, cnt);
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assert.strictEqual(rclosed, cnt);
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});
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for (let i = 0; i < chunkSize; i++) {
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data[i] = i;
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}
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for (let i = 0; i < cnt; i++) {
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const r = new FakeStream();
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r.on('close', function() {
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console.error(this.ID, 'read close');
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rclosed++;
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});
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rr.push(r);
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const w = new FakeStream();
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w.on('close', function() {
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console.error(this.ID, 'write close');
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wclosed++;
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});
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ww.push(w);
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r.ID = w.ID = i;
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r.pipe(w);
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}
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// now start passing through data
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// simulate a relatively fast async stream.
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rr.forEach(function(r) {
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let cnt = chunks;
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let paused = false;
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r.on('pause', function() {
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paused = true;
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});
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r.on('resume', function() {
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paused = false;
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step();
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});
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function step() {
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r.emit('data', data);
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if (--cnt === 0) {
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r.end();
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return;
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}
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if (paused) return;
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process.nextTick(step);
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}
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process.nextTick(step);
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});
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