| // This file was procedurally generated from the following sources: |
| // - src/async-generators/yield-star-getiter-async-returns-string-throw.case |
| // - src/async-generators/default/async-expression.template |
| /*--- |
| description: Non object returned by [Symbol.asyncIterator]() - string (Unnamed async generator expression) |
| esid: prod-AsyncGeneratorExpression |
| features: [Symbol.iterator, Symbol.asyncIterator, async-iteration] |
| flags: [generated, async] |
| info: | |
| Async Generator Function Definitions |
| |
| AsyncGeneratorExpression : |
| async [no LineTerminator here] function * BindingIdentifier ( FormalParameters ) { |
| 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). |
| ... |
| 6. Let iterator be ? Call(method, obj). |
| 7. If Type(iterator) is not Object, throw a TypeError exception. |
| ... |
| |
| ---*/ |
| var obj = { |
| get [Symbol.iterator]() { |
| throw new Test262Error('it should not get Symbol.iterator'); |
| }, |
| [Symbol.asyncIterator]() { |
| return '42'; |
| } |
| }; |
| |
| |
| |
| var callCount = 0; |
| |
| var gen = async function *() { |
| callCount += 1; |
| yield* obj; |
| throw new Test262Error('abrupt completion closes iter'); |
| |
| }; |
| |
| 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); |