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143 lines
3.4 KiB
JavaScript
143 lines
3.4 KiB
JavaScript
// deno-fmt-ignore-file
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// deno-lint-ignore-file
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// Copyright Joyent and Node contributors. All rights reserved. MIT license.
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// Taken from Node 18.12.1
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// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually.
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// 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, Writable } = require('stream');
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const EE = require('events').EventEmitter;
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// A mock thing a bit like the net.Socket/tcp_wrap.handle interaction
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const stream = new Readable({
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highWaterMark: 16,
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encoding: 'utf8'
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});
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const source = new EE();
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stream._read = function() {
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console.error('stream._read');
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readStart();
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};
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let ended = false;
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stream.on('end', function() {
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ended = true;
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});
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source.on('data', function(chunk) {
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const ret = stream.push(chunk);
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console.error('data', stream.readableLength);
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if (!ret)
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readStop();
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});
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source.on('end', function() {
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stream.push(null);
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});
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let reading = false;
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function readStart() {
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console.error('readStart');
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reading = true;
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}
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function readStop() {
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console.error('readStop');
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reading = false;
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process.nextTick(function() {
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const r = stream.read();
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if (r !== null)
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writer.write(r);
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});
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}
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const writer = new Writable({
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decodeStrings: false
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});
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const written = [];
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const expectWritten =
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[ 'asdfgasdfgasdfgasdfg',
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'asdfgasdfgasdfgasdfg',
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'asdfgasdfgasdfgasdfg',
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'asdfgasdfgasdfgasdfg',
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'asdfgasdfgasdfgasdfg',
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'asdfgasdfgasdfgasdfg' ];
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writer._write = function(chunk, encoding, cb) {
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console.error(`WRITE ${chunk}`);
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written.push(chunk);
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process.nextTick(cb);
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};
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writer.on('finish', finish);
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// Now emit some chunks.
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const chunk = 'asdfg';
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let set = 0;
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readStart();
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data();
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function data() {
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assert(reading);
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source.emit('data', chunk);
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assert(reading);
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source.emit('data', chunk);
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assert(reading);
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source.emit('data', chunk);
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assert(reading);
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source.emit('data', chunk);
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assert(!reading);
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if (set++ < 5)
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setTimeout(data, 10);
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else
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end();
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}
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function finish() {
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console.error('finish');
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assert.deepStrictEqual(written, expectWritten);
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console.log('ok');
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}
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function end() {
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source.emit('end');
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assert(!reading);
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writer.end(stream.read());
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setImmediate(function() {
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assert(ended);
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});
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}
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