test262/test/language/statements/for-await-of/async-gen-dstr-var-obj-ptrn...

65 lines
2.1 KiB
JavaScript

// This file was procedurally generated from the following sources:
// - src/dstr-binding-for-await/obj-ptrn-id-init-fn-name-gen.case
// - src/dstr-binding-for-await/default/for-await-of-async-gen-var.template
/*---
description: SingleNameBinding assigns name to "anonymous" generator functions (for-await-of statement)
esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation
features: [generators, 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.
[...]
13.3.3.7 Runtime Semantics: KeyedBindingInitialization
SingleNameBinding : BindingIdentifier Initializer_opt
[...]
6. If Initializer is present and v is undefined, then
[...]
d. If IsAnonymousFunctionDefinition(Initializer) is true, then
i. Let hasNameProperty be HasOwnProperty(v, "name").
ii. ReturnIfAbrupt(hasNameProperty).
iii. If hasNameProperty is false, perform SetFunctionName(v,
bindingId).
---*/
var iterCount = 0;
async function *fn() {
for await (var { gen = function* () {}, xGen = function* x() {} } of [{}]) {
assert.sameValue(gen.name, 'gen');
assert.notSameValue(xGen.name, 'xGen');
iterCount += 1;
}
}
fn().next()
.then(() => assert.sameValue(iterCount, 1, 'iteration occurred as expected'), $DONE)
.then($DONE, $DONE);