1// Copyright Joyent, Inc. and other Node contributors. 2// 3// Permission is hereby granted, free of charge, to any person obtaining a 4// copy of this software and associated documentation files (the 5// "Software"), to deal in the Software without restriction, including 6// without limitation the rights to use, copy, modify, merge, publish, 7// distribute, sublicense, and/or sell copies of the Software, and to permit 8// persons to whom the Software is furnished to do so, subject to the 9// following conditions: 10// 11// The above copyright notice and this permission notice shall be included 12// in all copies or substantial portions of the Software. 13// 14// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 15// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 16// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN 17// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, 18// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 19// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 20// USE OR OTHER DEALINGS IN THE SOFTWARE. 21 22'use strict'; 23const common = require('../common'); 24const assert = require('assert'); 25 26// This test makes sure that non-integer timer delays do not make the process 27// hang. See https://github.com/joyent/node/issues/8065 and 28// https://github.com/joyent/node/issues/8068 which have been fixed by 29// https://github.com/joyent/node/pull/8073. 30// 31// If the process hangs, this test will make the tests suite timeout, 32// otherwise it will exit very quickly (after 50 timers with a short delay 33// fire). 34// 35// We have to set at least several timers with a non-integer delay to 36// reproduce the issue. Sometimes, a timer with a non-integer delay will 37// expire correctly. 50 timers has always been more than enough to reproduce 38// it 100%. 39 40const TIMEOUT_DELAY = 1.1; 41let N = 50; 42 43const interval = setInterval(common.mustCall(() => { 44 if (--N === 0) { 45 clearInterval(interval); 46 } 47}, N), TIMEOUT_DELAY); 48 49// Test non-integer delay ordering 50{ 51 const ordering = []; 52 53 setTimeout(common.mustCall(() => { 54 ordering.push(1); 55 }), 1); 56 57 setTimeout(common.mustCall(() => { 58 ordering.push(2); 59 }), 1.8); 60 61 setTimeout(common.mustCall(() => { 62 ordering.push(3); 63 }), 1.1); 64 65 setTimeout(common.mustCall(() => { 66 ordering.push(4); 67 }), 1); 68 69 setTimeout(common.mustCall(() => { 70 const expected = [1, 2, 3, 4]; 71 72 assert.deepStrictEqual( 73 ordering, 74 expected, 75 `Non-integer delay ordering should be ${expected}, but got ${ordering}` 76 ); 77 78 // 2 should always be last of these delays due to ordering guarantees by 79 // the implementation. 80 }), 2); 81} 82