async-gen-yield-star-next-then-get-abrupt.js (2240B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/async-generators/yield-star-next-then-get-abrupt.case 4 // - src/async-generators/default/async-obj-method.template 5 /*--- 6 description: Return abrupt after getting next().then (Async generator method) 7 esid: prod-AsyncGeneratorMethod 8 features: [Symbol.iterator, Symbol.asyncIterator, 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 YieldExpression: yield * AssignmentExpression 18 ... 19 6. Repeat 20 a. If received.[[Type]] is normal, then 21 ii. Let innerResult be ? Invoke(iterator, "next", 22 « received.[[Value]] »). 23 iii. If generatorKind is async, then set innerResult to 24 ? Await(innerResult). 25 ... 26 27 Await 28 29 ... 30 2. Let promiseCapability be ! NewPromiseCapability(%Promise%). 31 3. Perform ! Call(promiseCapability.[[Resolve]], undefined, « promise »). 32 ... 33 34 Promise Resolve Functions 35 36 ... 37 8. Let then be Get(resolution, "then"). 38 ... 39 10. Get thenAction be then.[[Value]]. 40 ... 41 12. Perform EnqueueJob("PromiseJobs", PromiseResolveThenableJob, « promise, 42 resolution, thenAction »). 43 ... 44 45 ---*/ 46 var reason = {}; 47 var obj = { 48 get [Symbol.iterator]() { 49 throw new Test262Error('it should not get Symbol.iterator'); 50 }, 51 [Symbol.asyncIterator]() { 52 return { 53 next() { 54 return { 55 get then() { 56 throw reason; 57 } 58 }; 59 } 60 }; 61 } 62 }; 63 64 65 var callCount = 0; 66 67 var gen = { 68 async *method() { 69 callCount += 1; 70 yield* obj; 71 throw new Test262Error('abrupt completion closes iter'); 72 73 } 74 }.method; 75 76 var iter = gen(); 77 78 iter.next().then(() => { 79 throw new Test262Error('Promise incorrectly fulfilled.'); 80 }, v => { 81 assert.sameValue(v, reason, 'reject reason'); 82 83 iter.next().then(({ done, value }) => { 84 assert.sameValue(done, true, 'the iterator is completed'); 85 assert.sameValue(value, undefined, 'value is undefined'); 86 }).then($DONE, $DONE); 87 }).catch($DONE); 88 89 assert.sameValue(callCount, 1);