yield-star-getiter-async-get-abrupt.js (2021B)
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-class-expr-method.template 5 /*--- 6 description: Abrupt completion while getting [Symbol.asyncIterator] (Async generator method as a ClassExpression element) 7 esid: prod-AsyncGeneratorMethod 8 features: [Symbol.iterator, Symbol.asyncIterator, async-iteration] 9 flags: [generated, async] 10 info: | 11 ClassElement : 12 MethodDefinition 13 14 MethodDefinition : 15 AsyncGeneratorMethod 16 17 Async Generator Function Definitions 18 19 AsyncGeneratorMethod : 20 async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) { AsyncGeneratorBody } 21 22 23 YieldExpression: yield * AssignmentExpression 24 25 1. Let exprRef be the result of evaluating AssignmentExpression. 26 2. Let value be ? GetValue(exprRef). 27 3. Let generatorKind be ! GetGeneratorKind(). 28 4. Let iterator be ? GetIterator(value, generatorKind). 29 ... 30 31 GetIterator ( obj [ , hint ] ) 32 33 ... 34 3. If hint is async, 35 a. Set method to ? GetMethod(obj, @@asyncIterator). 36 ... 37 38 GetMethod ( V, P ) 39 40 ... 41 2. Let func be ? GetV(V, P). 42 ... 43 44 ---*/ 45 var reason = {}; 46 var obj = { 47 get [Symbol.iterator]() { 48 throw new Test262Error('it should not get Symbol.iterator'); 49 }, 50 get [Symbol.asyncIterator]() { 51 throw reason; 52 } 53 }; 54 55 56 57 var callCount = 0; 58 59 var C = class { async *gen() { 60 callCount += 1; 61 yield* obj; 62 throw new Test262Error('abrupt completion closes iter'); 63 64 }} 65 66 var gen = C.prototype.gen; 67 68 var iter = gen(); 69 70 iter.next().then(() => { 71 throw new Test262Error('Promise incorrectly fulfilled.'); 72 }, v => { 73 assert.sameValue(v, reason, "reject reason"); 74 75 iter.next().then(({ done, value }) => { 76 assert.sameValue(done, true, 'the iterator is completed'); 77 assert.sameValue(value, undefined, 'value is undefined'); 78 }).then($DONE, $DONE); 79 }).catch($DONE); 80 81 assert.sameValue(callCount, 1);