yield-star-getiter-sync-not-callable-symbol-throw.js (1960B)
1 // |reftest| async 2 // This file was procedurally generated from the following sources: 3 // - src/async-generators/yield-star-getiter-sync-not-callable-symbol-throw.case 4 // - src/async-generators/default/async-expression.template 5 /*--- 6 description: Throws a TypeError on a non-callable [Symbol.iterator] (symbol) (Unnamed async generator expression) 7 esid: prod-AsyncGeneratorExpression 8 features: [Symbol.iterator, Symbol.asyncIterator, 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 YieldExpression: yield * AssignmentExpression 19 20 1. Let exprRef be the result of evaluating AssignmentExpression. 21 2. Let value be ? GetValue(exprRef). 22 3. Let generatorKind be ! GetGeneratorKind(). 23 4. Let iterator be ? GetIterator(value, generatorKind). 24 ... 25 26 GetIterator ( obj [ , hint ] ) 27 28 ... 29 3. If hint is async, 30 a. Set method to ? GetMethod(obj, @@asyncIterator). 31 b. If method is undefined, 32 i. Let syncMethod be ? GetMethod(obj, @@iterator). 33 ... 34 35 GetMethod ( V, P ) 36 37 ... 38 2. Let func be ? GetV(V, P). 39 ... 40 4. If IsCallable(func) is false, throw a TypeError exception. 41 ... 42 43 ---*/ 44 var obj = { 45 [Symbol.iterator]: Symbol.iterator 46 }; 47 48 49 50 var callCount = 0; 51 52 var gen = async function *() { 53 callCount += 1; 54 yield* obj; 55 throw new Test262Error('abrupt completion closes iter'); 56 57 }; 58 59 var iter = gen(); 60 61 iter.next().then(() => { 62 throw new Test262Error('Promise incorrectly fulfilled.'); 63 }, v => { 64 assert.sameValue(v.constructor, TypeError, "TypeError"); 65 66 iter.next().then(({ done, value }) => { 67 assert.sameValue(done, true, 'the iterator is completed'); 68 assert.sameValue(value, undefined, 'value is undefined'); 69 }).then($DONE, $DONE); 70 }).catch($DONE); 71 72 assert.sameValue(callCount, 1);