| // This file was procedurally generated from the following sources: |
| // - src/async-generators/yield-star-getiter-sync-returns-undefined-throw.case |
| // - src/async-generators/default/async-class-expr-static-method.template |
| /*--- |
| description: Non object returned by [Symbol.iterator]() - undefined (Static async generator method as a ClassExpression element) |
| esid: prod-AsyncGeneratorMethod |
| features: [Symbol.iterator, async-iteration] |
| flags: [generated, async] |
| info: | |
| ClassElement : |
| static MethodDefinition |
| |
| MethodDefinition : |
| AsyncGeneratorMethod |
| |
| Async Generator Function Definitions |
| |
| AsyncGeneratorMethod : |
| async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) { AsyncGeneratorBody } |
| |
| |
| YieldExpression: yield * AssignmentExpression |
| |
| 1. Let exprRef be the result of evaluating AssignmentExpression. |
| 2. Let value be ? GetValue(exprRef). |
| 3. Let generatorKind be ! GetGeneratorKind(). |
| 4. Let iterator be ? GetIterator(value, generatorKind). |
| ... |
| |
| GetIterator ( obj [ , hint ] ) |
| |
| ... |
| 3. If hint is async, |
| a. Set method to ? GetMethod(obj, @@asyncIterator). |
| i. Let syncMethod be ? GetMethod(obj, @@iterator). |
| ii. Let syncIterator be ? Call(syncMethod, obj). |
| iii. Return ? CreateAsyncFromSyncIterator(syncIterator). |
| ... |
| |
| CreateAsyncFromSyncIterator(syncIterator) |
| |
| 1. If Type(syncIterator) is not Object, throw a TypeError exception. |
| ... |
| |
| ---*/ |
| var obj = { |
| [Symbol.iterator]() { |
| return undefined; |
| } |
| }; |
| |
| |
| |
| var callCount = 0; |
| |
| var C = class { static async *gen() { |
| callCount += 1; |
| yield* obj; |
| throw new Test262Error('abrupt completion closes iter'); |
| |
| }} |
| |
| var gen = C.gen; |
| |
| var iter = gen(); |
| |
| iter.next().then(() => { |
| throw new Test262Error('Promise incorrectly fulfilled.'); |
| }, v => { |
| assert.sameValue(v.constructor, TypeError, "TypeError"); |
| |
| iter.next().then(({ done, value }) => { |
| assert.sameValue(done, true, 'the iterator is completed'); |
| assert.sameValue(value, undefined, 'value is undefined'); |
| }).then($DONE, $DONE); |
| }).catch($DONE); |
| |
| assert.sameValue(callCount, 1); |