invoke-resolve-get-once-no-calls.js (1479B)
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 boundPromiseResolve = Promise.resolve.bind(Promise); 28 let getCount = 0; 29 let callCount = 0; 30 31 Object.defineProperty(Promise, 'resolve', { 32 configurable: true, 33 get() { 34 getCount += 1; 35 return function(...args) { 36 callCount += 1; 37 return boundPromiseResolve(...args); 38 }; 39 } 40 }); 41 42 Promise.any([]).then(() => { 43 $DONE('The promise should be rejected, but was resolved'); 44 }, ({errors}) => { 45 assert.sameValue(getCount, 1); 46 assert.sameValue(callCount, 0); 47 assert.sameValue(errors.length, 0); 48 }).then($DONE, $DONE);