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// |reftest| async
// Copyright (C) 2018 Valerie Young. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-asyncgenerator-prototype-throw
description: >
"throw" returns a rejected promise
info: |
AsyncGenerator.prototype.next ( value )
1. Let generator be the this value.
2. Let completion be NormalCompletion(value).
3. Return ! AsyncGeneratorEnqueue(generator, completion).
AsyncGeneratorEnqueue ( generator, completion )
...
2. Let promiseCapability be ! NewPromiseCapability(%Promise%).
...
4. Let queue be generator.[[AsyncGeneratorQueue]].
5. Let request be AsyncGeneratorRequest{[[Completion]]: completion,
[[Capability]]: promiseCapability}.
6. Append request to the end of queue.
...
9. Return promiseCapability.[[Promise]].
AsyncGeneratorReject ( generator, exception )
1. Assert: generator is an AsyncGenerator instance.
2. Let queue be generator.[[AsyncGeneratorQueue]].
3. Assert: queue is not an empty List.
4. Remove the first element from queue and let next be the value of that element.
5. Let promiseCapability be next.[[Capability]].
6. Perform ! Call(promiseCapability.[[Reject]], undefined, « exception »).
...
flags: [async]
features: [async-iteration]
---*/
async function* g() {}
var errormessage = "Promise rejected."
var result = g().throw(new Test262Error(errormessage))
assert(result instanceof Promise, "Expected result to be an instanceof Promise")
result.then(
function () {
throw new Test262Error("Expected result to be rejected promise.");
},
function (e) {
if (!(e.message = errormessage)) {
throw new Test262Error("Expected thrown custom error, got " + e);
}
}
).then($DONE, $DONE)
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