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// 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');
// This test makes sure that non-integer timer delays do not make the process
// hang. See https://github.com/joyent/node/issues/8065 and
// https://github.com/joyent/node/issues/8068 which have been fixed by
// https://github.com/joyent/node/pull/8073.
//
// If the process hangs, this test will make the tests suite timeout,
// otherwise it will exit very quickly (after 50 timers with a short delay
// fire).
//
// We have to set at least several timers with a non-integer delay to
// reproduce the issue. Sometimes, a timer with a non-integer delay will
// expire correctly. 50 timers has always been more than enough to reproduce
// it 100%.
const TIMEOUT_DELAY = 1.1;
let N = 50;
const interval = setInterval(common.mustCall(() => {
if (--N === 0) {
clearInterval(interval);
}
}, N), TIMEOUT_DELAY);
// Test non-integer delay ordering
{
const ordering = [];
setTimeout(common.mustCall(() => {
ordering.push(1);
}), 1);
setTimeout(common.mustCall(() => {
ordering.push(2);
}), 1.8);
setTimeout(common.mustCall(() => {
ordering.push(3);
}), 1.1);
setTimeout(common.mustCall(() => {
ordering.push(4);
}), 1);
setTimeout(common.mustCall(() => {
const expected = [1, 2, 3, 4];
assert.deepStrictEqual(
ordering,
expected,
`Non-integer delay ordering should be ${expected}, but got ${ordering}`
);
// 2 should always be last of these delays due to ordering guarantees by
// the implementation.
}), 2);
}
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