mirror of
https://github.com/tc39/test262.git
synced 2025-11-04 13:44:29 +01:00
b3092c61b6
* Add missing generators feature flags * Generate files * Add generators flags * fixup! Add generators flags
48 lines
1.6 KiB
JavaScript
48 lines
1.6 KiB
JavaScript
// This file was procedurally generated from the following sources:
|
|
// - src/dstr-binding/ary-ptrn-elem-ary-empty-init.case
|
|
// - src/dstr-binding/default/async-gen-func-named-expr.template
|
|
/*---
|
|
description: BindingElement with array binding pattern and initializer is used (async generator named function expression)
|
|
esid: sec-asyncgenerator-definitions-evaluation
|
|
features: [generators, async-iteration]
|
|
flags: [generated, async]
|
|
info: |
|
|
AsyncGeneratorExpression : async [no LineTerminator here] function * BindingIdentifier
|
|
( FormalParameters ) { AsyncGeneratorBody }
|
|
|
|
[...]
|
|
7. Let closure be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters,
|
|
AsyncGeneratorBody, funcEnv, strict).
|
|
[...]
|
|
|
|
|
|
13.3.3.6 Runtime Semantics: IteratorBindingInitialization
|
|
|
|
BindingElement : BindingPatternInitializer opt
|
|
|
|
[...]
|
|
2. If iteratorRecord.[[done]] is true, let v be undefined.
|
|
3. If Initializer is present and v is undefined, then
|
|
a. Let defaultValue be the result of evaluating Initializer.
|
|
b. Let v be ? GetValue(defaultValue).
|
|
4. Return the result of performing BindingInitialization of BindingPattern
|
|
with v and environment as the arguments.
|
|
|
|
---*/
|
|
var initCount = 0;
|
|
var iterCount = 0;
|
|
var iter = function*() { iterCount += 1; }();
|
|
|
|
|
|
var callCount = 0;
|
|
var f;
|
|
f = async function* h([[] = function() { initCount += 1; return iter; }()]) {
|
|
assert.sameValue(initCount, 1);
|
|
assert.sameValue(iterCount, 0);
|
|
callCount = callCount + 1;
|
|
};
|
|
|
|
f([]).next().then(() => {
|
|
assert.sameValue(callCount, 1, 'invoked exactly once');
|
|
}).then($DONE, $DONE);
|