invoke-then-get-error-close.js (1416B)
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 description: > 6 Error thrown when accesing the instance's `then` method (closing iterator) 7 esid: sec-promise.any 8 info: | 9 5. Let result be PerformPromiseAny(iteratorRecord, C, promiseCapability). 10 6. If result is an abrupt completion, then 11 a. If iteratorRecord.[[Done]] is false, set result to IteratorClose(iteratorRecord, result). 12 b. IfAbruptRejectPromise(result, promiseCapability). 13 14 Runtime Semantics: PerformPromiseAny 15 16 r. Perform ? Invoke(nextPromise, "then", « resultCapability.[[Resolve]], rejectElement »). 17 18 flags: [async] 19 features: [Promise.any, Symbol.iterator, arrow-function, computed-property-names, Symbol] 20 ---*/ 21 let error = new Test262Error(); 22 let promise = Promise.resolve(); 23 let returnCount = 0; 24 let iter = { 25 [Symbol.iterator]() { 26 return { 27 next() { 28 return { 29 done: false, 30 value: promise 31 }; 32 }, 33 return() { 34 returnCount += 1; 35 return {}; 36 } 37 }; 38 } 39 }; 40 41 Object.defineProperty(promise, 'then', { 42 get() { 43 throw error; 44 } 45 }); 46 47 Promise.any(iter).then(() => { 48 $DONE('The promise should be rejected, but was resolved'); 49 }, (reason) => { 50 assert.sameValue(returnCount, 1); 51 assert.sameValue(reason, error); 52 }).then($DONE, $DONE);