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bun.sh/test/js/node/test/parallel/timers-immediate-queue.test.js
2024-08-22 18:00:25 -07:00

64 lines
2.1 KiB
JavaScript

//#FILE: test-timers-immediate-queue.js
//#SHA1: 04dace9bcd1a7634224efafb4fdd5a953bfc28f6
//-----------------
// 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";
// setImmediate should run clear its queued cbs once per event loop turn
// but immediates queued while processing the current queue should happen
// on the next turn of the event loop.
// hit should be the exact same size of QUEUE, if we're letting things
// recursively add to the immediate QUEUE hit will be > QUEUE
test("setImmediate queue processing", done => {
let ticked = false;
let hit = 0;
const QUEUE = 10;
function run() {
if (hit === 0) {
setTimeout(() => {
ticked = true;
}, 1);
const now = Date.now();
while (Date.now() - now < 2);
}
if (ticked) return;
hit += 1;
setImmediate(run);
}
for (let i = 0; i < QUEUE; i++) setImmediate(run);
// Use setImmediate to ensure all other immediates have run
setImmediate(() => {
expect(hit).toBe(QUEUE);
done();
});
});
//<#END_FILE: test-timers-immediate-queue.js