mirror of
https://github.com/denoland/deno.git
synced 2024-12-11 01:58:05 -05:00
107 lines
3.2 KiB
JavaScript
107 lines
3.2 KiB
JavaScript
// deno-fmt-ignore-file
|
|
// deno-lint-ignore-file
|
|
|
|
// Copyright Joyent and Node contributors. All rights reserved. MIT license.
|
|
// Taken from Node 18.12.1
|
|
// This file is automatically generated by `tools/node_compat/setup.ts`. Do not modify this file manually.
|
|
|
|
// 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';
|
|
const common = require('../common');
|
|
const assert = require('assert');
|
|
const { Readable, Writable } = require('stream');
|
|
const EE = require('events').EventEmitter;
|
|
|
|
function runTest(highWaterMark, objectMode, produce) {
|
|
|
|
const old = new EE();
|
|
const r = new Readable({ highWaterMark, objectMode });
|
|
assert.strictEqual(r, r.wrap(old));
|
|
|
|
r.on('end', common.mustCall());
|
|
|
|
old.pause = function() {
|
|
old.emit('pause');
|
|
flowing = false;
|
|
};
|
|
|
|
old.resume = function() {
|
|
old.emit('resume');
|
|
flow();
|
|
};
|
|
|
|
// Make sure pause is only emitted once.
|
|
let pausing = false;
|
|
r.on('pause', () => {
|
|
assert.strictEqual(pausing, false);
|
|
pausing = true;
|
|
process.nextTick(() => {
|
|
pausing = false;
|
|
});
|
|
});
|
|
|
|
let flowing;
|
|
let chunks = 10;
|
|
let oldEnded = false;
|
|
const expected = [];
|
|
function flow() {
|
|
flowing = true;
|
|
while (flowing && chunks-- > 0) {
|
|
const item = produce();
|
|
expected.push(item);
|
|
old.emit('data', item);
|
|
}
|
|
if (chunks <= 0) {
|
|
oldEnded = true;
|
|
old.emit('end');
|
|
}
|
|
}
|
|
|
|
const w = new Writable({ highWaterMark: highWaterMark * 2,
|
|
objectMode });
|
|
const written = [];
|
|
w._write = function(chunk, encoding, cb) {
|
|
written.push(chunk);
|
|
setTimeout(cb, 1);
|
|
};
|
|
|
|
w.on('finish', common.mustCall(function() {
|
|
performAsserts();
|
|
}));
|
|
|
|
r.pipe(w);
|
|
|
|
flow();
|
|
|
|
function performAsserts() {
|
|
assert(oldEnded);
|
|
assert.deepStrictEqual(written, expected);
|
|
}
|
|
}
|
|
|
|
runTest(100, false, function() { return Buffer.allocUnsafe(100); });
|
|
runTest(10, false, function() { return Buffer.from('xxxxxxxxxx'); });
|
|
runTest(1, true, function() { return { foo: 'bar' }; });
|
|
|
|
const objectChunks = [ 5, 'a', false, 0, '', 'xyz', { x: 4 }, 7, [], 555 ];
|
|
runTest(1, true, function() { return objectChunks.shift(); });
|