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// |reftest| async
// This file was procedurally generated from the following sources:
// - src/async-generators/yield-star-next-non-object-ignores-then.case
// - src/async-generators/default/async-expression.template
/*---
description: If next() value is not-object, do not access respective then property (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
...
6. Repeat
a. If received.[[Type]] is normal, then
ii. Let innerResult be ? Invoke(iterator, "next",
« received.[[Value]] »).
iii. If generatorKind is async, then set innerResult to
? Await(innerResult).
iv. If Type(innerResult) is not Object, throw a TypeError exception.
...
Await
...
2. Let promiseCapability be ! NewPromiseCapability(%Promise%).
3. Perform ! Call(promiseCapability.[[Resolve]], undefined, « promise »).
...
Promise Resolve Functions
...
7. If Type(resolution) is not Object, then
a. Return FulfillPromise(promise, resolution).
8. Let then be Get(resolution, "then").
...
---*/
Number.prototype.then = function() {
throw new Test262Error('Number#then should not be used');
};
var obj = {
get [Symbol.iterator]() {
throw new Test262Error('it should not get Symbol.iterator');
},
[Symbol.asyncIterator]() {
return {
next() {
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);