executor-function-property-order.js (742B)
1 // Copyright (C) 2020 ExE Boss. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 /*--- 4 esid: sec-createbuiltinfunction 5 description: Promise executor function property order 6 info: | 7 Set order: "length", "name" 8 ---*/ 9 10 var executorFunction; 11 12 function NotPromise(executor) { 13 executorFunction = executor; 14 executor(function() {}, function() {}); 15 } 16 Promise.resolve.call(NotPromise); 17 18 var propNames = Object.getOwnPropertyNames(executorFunction); 19 var lengthIndex = propNames.indexOf("length"); 20 var nameIndex = propNames.indexOf("name"); 21 22 assert(lengthIndex >= 0 && nameIndex === lengthIndex + 1, 23 "The `length` property comes before the `name` property on built-in functions"); 24 25 reportCompare(0, 0);