async-gen-yield-star-getiter-async-get-abrupt.js (1874B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/async-generators/yield-star-getiter-async-get-abrupt.case 4 // - src/async-generators/default/async-obj-method.template 5 /*--- 6 description: Abrupt completion while getting [Symbol.asyncIterator] (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 1. Let exprRef be the result of evaluating AssignmentExpression. 20 2. Let value be ? GetValue(exprRef). 21 3. Let generatorKind be ! GetGeneratorKind(). 22 4. Let iterator be ? GetIterator(value, generatorKind). 23 ... 24 25 GetIterator ( obj [ , hint ] ) 26 27 ... 28 3. If hint is async, 29 a. Set method to ? GetMethod(obj, @@asyncIterator). 30 ... 31 32 GetMethod ( V, P ) 33 34 ... 35 2. Let func be ? GetV(V, P). 36 ... 37 38 ---*/ 39 var reason = {}; 40 var obj = { 41 get [Symbol.iterator]() { 42 throw new Test262Error('it should not get Symbol.iterator'); 43 }, 44 get [Symbol.asyncIterator]() { 45 throw reason; 46 } 47 }; 48 49 50 var callCount = 0; 51 52 var gen = { 53 async *method() { 54 callCount += 1; 55 yield* obj; 56 throw new Test262Error('abrupt completion closes iter'); 57 58 } 59 }.method; 60 61 var iter = gen(); 62 63 iter.next().then(() => { 64 throw new Test262Error('Promise incorrectly fulfilled.'); 65 }, v => { 66 assert.sameValue(v, reason, "reject reason"); 67 68 iter.next().then(({ done, value }) => { 69 assert.sameValue(done, true, 'the iterator is completed'); 70 assert.sameValue(value, undefined, 'value is undefined'); 71 }).then($DONE, $DONE); 72 }).catch($DONE); 73 74 assert.sameValue(callCount, 1);