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denoland-deno/cli/tests/node_compat/test/parallel/test-process-beforeexit.js

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// 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 net = require('net');
process.once('beforeExit', common.mustCall(tryImmediate));
function tryImmediate() {
setImmediate(common.mustCall(() => {
process.once('beforeExit', common.mustCall(tryTimer));
}));
}
function tryTimer() {
setTimeout(common.mustCall(() => {
process.once('beforeExit', common.mustCall(tryListen));
}), 1);
}
function tryListen() {
net.createServer()
.listen(0)
.on('listening', common.mustCall(function() {
this.close();
process.once('beforeExit', common.mustCall(tryRepeatedTimer));
}));
}
// Test that a function invoked from the beforeExit handler can use a timer
// to keep the event loop open, which can use another timer to keep the event
// loop open, etc.
//
// After N times, call function `tryNextTick` to test behaviors of the
// `process.nextTick`.
function tryRepeatedTimer() {
const N = 5;
let n = 0;
const repeatedTimer = common.mustCall(function() {
if (++n < N)
setTimeout(repeatedTimer, 1);
else // n == N
process.once('beforeExit', common.mustCall(tryNextTickSetImmediate));
}, N);
setTimeout(repeatedTimer, 1);
}
// Test if the callback of `process.nextTick` can be invoked.
function tryNextTickSetImmediate() {
process.nextTick(common.mustCall(function() {
setImmediate(common.mustCall(() => {
process.once('beforeExit', common.mustCall(tryNextTick));
}));
}));
}
// Test that `process.nextTick` won't keep the event loop running by itself.
function tryNextTick() {
process.nextTick(common.mustCall(function() {
process.once('beforeExit', common.mustNotCall());
}));
}