invoke-resolve-on-promises-every-iteration-of-promise.js (894B)
1 // |reftest| async 2 // Copyright (C) 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 Invocation of the constructor's `resolve` method for iterable with promise values 8 esid: sec-promise.all 9 info: | 10 Let result be PerformPromiseAll(iteratorRecord, C, promiseCapability). 11 12 Runtime Semantics: PerformPromiseAll 13 14 Repeat 15 ... 16 i. Let nextPromise be ? Call(promiseResolve, constructor, « nextValue »). 17 18 flags: [async] 19 features: [arrow-function] 20 ---*/ 21 22 let values = [1,1,1]; 23 let callCount = 0; 24 let boundPromiseResolve = Promise.resolve.bind(Promise); 25 26 Promise.resolve = function(...args) { 27 callCount += 1; 28 return boundPromiseResolve(...args); 29 }; 30 31 Promise.all(values) 32 .then(() => { 33 assert.sameValue(callCount, 3, '`then` invoked once for every iterated promise'); 34 }).then($DONE, $DONE);