invoke-resolve-get-once-multiple-calls.js (1568B)
1 // |reftest| async 2 // Copyright (C) 2019 Leo Balter, 2020 Rick Waldron. All rights reserved. 3 // This code is governed by the BSD license found in the LICENSE file. 4 5 /*--- 6 description: > 7 Gets constructor's `resolve` method once from zero to many invocations. 8 esid: sec-promise.any 9 info: | 10 5. Let result be PerformPromiseAny(iteratorRecord, C, promiseCapability). 11 6. If result is an abrupt completion, then 12 a. If iteratorRecord.[[Done]] is false, set result to IteratorClose(iteratorRecord, result). 13 b. IfAbruptRejectPromise(result, promiseCapability). 14 15 Runtime Semantics: PerformPromiseAny 16 17 6. Let promiseResolve be ? Get(constructor, "resolve"). 18 7. If ! IsCallable(promiseResolve) is false, throw a TypeError exception. 19 8. Repeat 20 ... 21 i. Let nextPromise be ? Call(promiseResolve, constructor, « nextValue »). 22 23 flags: [async] 24 features: [Promise.any, arrow-function, destructuring-binding] 25 ---*/ 26 27 let promises = [ 28 Promise.reject(1), 29 Promise.reject(1), 30 Promise.reject(1), 31 ]; 32 let boundPromiseResolve = Promise.resolve.bind(Promise); 33 let getCount = 0; 34 let callCount = 0; 35 36 Object.defineProperty(Promise, 'resolve', { 37 configurable: true, 38 get() { 39 getCount += 1; 40 return function(...args) { 41 callCount += 1; 42 return boundPromiseResolve(...args); 43 }; 44 } 45 }); 46 47 Promise.any(promises).then(() => { 48 $DONE('The promise should be rejected, but was resolved'); 49 }, ({errors}) => { 50 assert.sameValue(getCount, 1); 51 assert.sameValue(callCount, 3); 52 assert.sameValue(errors.length, 3); 53 }).then($DONE, $DONE);