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// Copyright (C) 2018 Valerie Young. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-%asyncfromsynciteratorprototype%.throw
description: throw() will return rejected promise if getter of `throw` abrupt completes
info: |
%AsyncFromSyncIteratorPrototype%.return ( value )
...
2. Let promiseCapability be ! NewPromiseCapability(%Promise%).
...
5. Let return be GetMethod(syncIterator, "throw").
6. IfAbruptRejectPromise(throw, promiseCapability).
...
22. Return promiseCapability.[[Promise]].
flags: [async]
features: [async-iteration]
---*/
var thrownError = new Error("Catch me.");
var obj = {
[Symbol.iterator]() {
return {
next() {
return { value: 1, done: false };
},
get throw() {
throw thrownError;
}
};
}
};
async function* asyncg() {
yield* obj;
}
var iter = asyncg();
iter.next().then(function(result) {
iter.throw().then(
function (result) {
throw new Test262Error("Promise should be rejected, got: " + result.value);
},
function (err) {
assert.sameValue(err, thrownError, "Promise should be rejected with thrown error");
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);
}).catch($DONE);
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