mirror of https://github.com/tc39/test262.git
43 lines
1.5 KiB
JavaScript
43 lines
1.5 KiB
JavaScript
|
// This file was procedurally generated from the following sources:
|
||
|
|
// - src/dstr-binding/ary-ptrn-elem-ary-empty-iter.case
|
||
|
|
// - src/dstr-binding/default/async-gen-func-decl-dflt.template
|
||
|
|
/*---
|
||
|
|
description: BindingElement with array binding pattern and initializer is not used (async generator function declaration (default parameter))
|
||
|
|
esid: sec-asyncgenerator-definitions-instantiatefunctionobject
|
||
|
|
features: [async-iteration]
|
||
|
|
flags: [generated, async]
|
||
|
|
info: |
|
||
|
|
AsyncGeneratorDeclaration : async [no LineTerminator here] function * BindingIdentifier
|
||
|
|
( FormalParameters ) { AsyncGeneratorBody }
|
||
|
|
|
||
|
|
[...]
|
||
|
|
3. Let F be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, AsyncGeneratorBody,
|
||
|
|
scope, strict).
|
||
|
|
[...]
|
||
|
|
|
||
|
|
|
||
|
|
13.3.3.6 Runtime Semantics: IteratorBindingInitialization
|
||
|
|
|
||
|
|
BindingElement : BindingPatternInitializer opt
|
||
|
|
|
||
|
|
1. If iteratorRecord.[[done]] is false, then
|
||
|
|
a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
|
||
|
|
[...]
|
||
|
|
e. Else,
|
||
|
|
i. Let v be IteratorValue(next).
|
||
|
|
[...]
|
||
|
|
4. Return the result of performing BindingInitialization of BindingPattern
|
||
|
|
with v and environment as the arguments.
|
||
|
|
---*/
|
||
|
|
var initCount = 0;
|
||
|
|
|
||
|
|
|
||
|
|
var callCount = 0;
|
||
|
|
async function* f([[] = function() { initCount += 1; }()] = [[23]]) {
|
||
|
|
assert.sameValue(initCount, 0);
|
||
|
|
callCount = callCount + 1;
|
||
|
|
};
|
||
|
|
f().next().then(() => {
|
||
|
|
assert.sameValue(callCount, 1, 'invoked exactly once');
|
||
|
|
}).then($DONE, $DONE);
|