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/* 27 * This test makes sure that non-integer timer delays do not make the process 28 * hang. See https://github.com/joyent/node/issues/8065 and 29 * https://github.com/joyent/node/issues/8068 which have been fixed by 30 * https://github.com/joyent/node/pull/8073. 31 * 32 * If the process hangs, this test will make the tests suite timeout, 33 * otherwise it will exit very quickly (after 50 timers with a short delay 34 * fire). 35 * 36 * We have to set at least several timers with a non-integer delay to 37 * reproduce the issue. Sometimes, a timer with a non-integer delay will 38 * expire correctly. 50 timers has always been more than enough to reproduce 39 * it 100%. 40 */ 41 42const TIMEOUT_DELAY = 1.1; 43let N = 50; 44 45const interval = setInterval(common.mustCall(() => { 46 if (--N === 0) { 47 clearInterval(interval); 48 } 49}, N), TIMEOUT_DELAY); 50 51// Test non-integer delay ordering 52{ 53 const ordering = []; 54 55 setTimeout(common.mustCall(() => { 56 ordering.push(1); 57 }), 1); 58 59 setTimeout(common.mustCall(() => { 60 ordering.push(2); 61 }), 1.8); 62 63 setTimeout(common.mustCall(() => { 64 ordering.push(3); 65 }), 1.1); 66 67 setTimeout(common.mustCall(() => { 68 ordering.push(4); 69 }), 1); 70 71 setTimeout(common.mustCall(() => { 72 const expected = [1, 2, 3, 4]; 73 74 assert.deepStrictEqual( 75 ordering, 76 expected, 77 `Non-integer delay ordering should be ${expected}, but got ${ordering}` 78 ); 79 80 // 2 should always be last of these delays due to ordering guarantees by 81 // the implementation. 82 }), 2); 83} 84