mirror of https://github.com/tc39/test262.git
65 lines
1.9 KiB
JavaScript
65 lines
1.9 KiB
JavaScript
// This file was procedurally generated from the following sources:
|
|
// - src/dstr-binding-for-await/obj-ptrn-rest-getter.case
|
|
// - src/dstr-binding-for-await/default/for-await-of-async-func-const-async.template
|
|
/*---
|
|
description: Getter is called when obj is being deconstructed to a rest Object (for-await-of statement)
|
|
esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
|
|
features: [object-rest, destructuring-binding, async-iteration]
|
|
flags: [generated, async]
|
|
includes: [propertyHelper.js]
|
|
info: |
|
|
IterationStatement :
|
|
for await ( ForDeclaration of AssignmentExpression ) Statement
|
|
|
|
[...]
|
|
2. Return ? ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult,
|
|
lexicalBinding, labelSet, async).
|
|
|
|
13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation
|
|
|
|
[...]
|
|
4. Let destructuring be IsDestructuring of lhs.
|
|
[...]
|
|
6. Repeat
|
|
[...]
|
|
j. If destructuring is false, then
|
|
[...]
|
|
k. Else
|
|
i. If lhsKind is assignment, then
|
|
[...]
|
|
ii. Else if lhsKind is varBinding, then
|
|
[...]
|
|
iii. Else,
|
|
1. Assert: lhsKind is lexicalBinding.
|
|
2. Assert: lhs is a ForDeclaration.
|
|
3. Let status be the result of performing BindingInitialization
|
|
for lhs passing nextValue and iterationEnv as arguments.
|
|
[...]
|
|
---*/
|
|
var count = 0;
|
|
|
|
var iterCount = 0;
|
|
var asyncIter = (async function*() {
|
|
yield* [{ get v() { count++; return 2; } }];
|
|
})();
|
|
|
|
async function fn() {
|
|
for await (const {...x} of asyncIter) {
|
|
assert.sameValue(x.v, 2);
|
|
assert.sameValue(count, 1);
|
|
|
|
verifyProperty(x, "v", {
|
|
enumerable: true,
|
|
writable: true,
|
|
configurable: true,
|
|
value: 2
|
|
});
|
|
|
|
iterCount += 1;
|
|
}
|
|
}
|
|
|
|
fn()
|
|
.then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
|
|
.then($DONE, $DONE);
|