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// |reftest| async
// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-generator-function-definitions-runtime-semantics-evaluation
description: >
`reject` is anonymous built-in function with length of 1.
info: |
YieldExpression : yield AssignmentExpression
[...]
4. If generatorKind is async, then return ? AsyncGeneratorYield(value).
AsyncGeneratorYield ( value )
[...]
5. Set value to ? Await(value).
[...]
9. Return ! AsyncGeneratorResolve(generator, value, false).
Await
[...]
2. Let promise be ? PromiseResolve(%Promise%, value).
[...]
PromiseResolve ( C, x )
[...]
3. Let promiseCapability be ? NewPromiseCapability(C).
4. Perform ? Call(promiseCapability.[[Resolve]], undefined, « x »).
5. Return promiseCapability.[[Promise]].
NewPromiseCapability ( C )
[...]
7. Let promise be ? Construct(C, « executor »).
[...]
11. Return promiseCapability.
Promise ( executor )
[...]
8. Let resolvingFunctions be CreateResolvingFunctions(promise).
[...]
11. Return promise.
CreateResolvingFunctions ( promise )
[...]
7. Let reject be ! CreateBuiltinFunction(stepsReject, « [[Promise]], [[AlreadyResolved]] »).
[...]
10. Return the Record { [[Resolve]]: resolve, [[Reject]]: reject }.
flags: [async]
features: [async-iteration, Reflect.construct]
includes: [isConstructor.js]
---*/
var thenable = {
then: function(resolve, reject) {
resolve(reject);
},
};
var iter = (async function*() {
yield thenable;
}());
iter.next().then(function(result) {
var reject = result.value;
assert(!isConstructor(reject));
assert.sameValue(reject.length, 1);
assert.sameValue(reject.name, '');
}).then($DONE, $DONE);
|
