invoke-then-error-close.js (1387B)
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 invoking 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 22 let error = new Test262Error(); 23 let promise = Promise.resolve(); 24 let returnCount = 0; 25 let iter = { 26 [Symbol.iterator]() { 27 return { 28 next() { 29 return { 30 done: false, 31 value: promise 32 }; 33 }, 34 return() { 35 returnCount += 1; 36 return {}; 37 } 38 }; 39 } 40 }; 41 42 promise.then = function() { 43 throw error; 44 }; 45 46 Promise.any(iter).then(() => { 47 $DONE('The promise should be rejected, but was resolved'); 48 }, (reason) => { 49 assert.sameValue(returnCount, 1); 50 assert.sameValue(reason, error); 51 }).then($DONE, $DONE);