async-gen-yield-promise-reject-next-for-await-of-async-iterator.js (1383B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/async-generators/yield-promise-reject-next-for-await-of-async-iterator.case 4 // - src/async-generators/default/async-obj-method.template 5 /*--- 6 description: yield * [Promise.reject(value)] is treated as throw value (Async generator method) 7 esid: prod-AsyncGeneratorMethod 8 features: [async-iteration] 9 flags: [generated, async] 10 info: | 11 Async Generator Function Definitions 12 13 AsyncGeneratorMethod : 14 async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) { AsyncGeneratorBody } 15 16 ---*/ 17 let error = new Error(); 18 async function * readFile() { 19 yield Promise.reject(error); 20 yield "unreachable"; 21 } 22 23 var callCount = 0; 24 25 var gen = { 26 async *method() { 27 callCount += 1; 28 for await (let line of readFile()) { 29 yield line; 30 } 31 } 32 }.method; 33 34 var iter = gen(); 35 36 iter.next().then(() => { 37 throw new Test262Error("Promise incorrectly resolved."); 38 }, rejectValue => { 39 40 // yield Promise.reject(error); 41 assert.sameValue(rejectValue, error); 42 43 iter.next().then(({done, value}) => { 44 // iter is closed now. 45 assert.sameValue(done, true, "The value of IteratorResult.done is `true`"); 46 assert.sameValue(value, undefined, "The value of IteratorResult.value is `undefined`"); 47 }).then($DONE, $DONE); 48 }).catch($DONE); 49 50 assert.sameValue(callCount, 1);