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// |reftest| async
// This file was procedurally generated from the following sources:
// - src/dstr-binding-for-await/ary-name-iter-val.case
// - src/dstr-binding-for-await/default/for-await-of-async-gen-var.template
/*---
description: SingleNameBinding with normal value iteration (for-await-of statement)
esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
features: [destructuring-binding, async-iteration]
flags: [generated, async]
info: |
IterationStatement :
for await ( var ForBinding of AssignmentExpression ) Statement
[...]
2. Return ? ForIn/OfBodyEvaluation(ForBinding, Statement, keyResult,
varBinding, 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
1. Assert: lhs is a ForBinding.
2. Let status be the result of performing BindingInitialization
for lhs passing nextValue and undefined as the arguments.
[...]
13.3.3.6 Runtime Semantics: IteratorBindingInitialization
SingleNameBinding : BindingIdentifier Initializer_opt
[...]
3. If iteratorRecord.[[done]] is false, then
a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
c. ReturnIfAbrupt(next).
d. If next is false, set iteratorRecord.[[done]] to true.
e. Else,
i. Let v be IteratorValue(next).
ii. If v is an abrupt completion, set
iteratorRecord.[[done]] to true.
iii. ReturnIfAbrupt(v).
4. If iteratorRecord.[[done]] is true, let v be undefined.
[...]
7. Return InitializeReferencedBinding(lhs, v).
---*/
var iterCount = 0;
async function *fn() {
for await (var [x, y, z] of [[1, 2, 3]]) {
assert.sameValue(x, 1);
assert.sameValue(y, 2);
assert.sameValue(z, 3);
iterCount += 1;
}
}
fn().next()
.then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
.then($DONE, $DONE);