yield-promise-reject-next-yield-star-sync-iterator.js (1325B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/async-generators/yield-promise-reject-next-yield-star-sync-iterator.case 4 // - src/async-generators/default/async-expression.template 5 /*--- 6 description: yield * (async iterator) is treated as throw value (Unnamed async generator expression) 7 esid: prod-AsyncGeneratorExpression 8 features: [async-iteration] 9 flags: [generated, async] 10 info: | 11 Async Generator Function Definitions 12 13 AsyncGeneratorExpression : 14 async [no LineTerminator here] function * BindingIdentifier ( FormalParameters ) { 15 AsyncGeneratorBody } 16 17 ---*/ 18 let error = new Error(); 19 let iterable = [ 20 Promise.reject(error), 21 "unreachable" 22 ]; 23 24 25 var callCount = 0; 26 27 var gen = async function *() { 28 callCount += 1; 29 yield * iterable; 30 }; 31 32 var iter = gen(); 33 34 iter.next().then(() => { 35 throw new Test262Error("Promise incorrectly resolved."); 36 }, rejectValue => { 37 // yield Promise.reject(error); 38 assert.sameValue(rejectValue, error); 39 40 iter.next().then(({done, value}) => { 41 // iter is closed now. 42 assert.sameValue(done, true, "The value of IteratorResult.done is `true`"); 43 assert.sameValue(value, undefined, "The value of IteratorResult.value is `undefined`"); 44 }).then($DONE, $DONE); 45 }).catch($DONE); 46 47 assert.sameValue(callCount, 1);