mirror of
https://github.com/tc39/test262.git
synced 2025-10-29 18:53:58 +01:00
42 lines
1.2 KiB
JavaScript
42 lines
1.2 KiB
JavaScript
// This file was procedurally generated from the following sources:
|
|
// - src/dstr-binding/ary-ptrn-empty.case
|
|
// - src/dstr-binding/default/async-gen-func-named-expr-dflt.template
|
|
/*---
|
|
description: No iteration occurs for an "empty" array binding pattern (async generator named function expression (default parameter))
|
|
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
|
|
|
|
ArrayBindingPattern : [ ]
|
|
|
|
1. Return NormalCompletion(empty).
|
|
|
|
---*/
|
|
var iterations = 0;
|
|
var iter = function*() {
|
|
iterations += 1;
|
|
}();
|
|
|
|
|
|
var callCount = 0;
|
|
var f;
|
|
f = async function* h([] = iter) {
|
|
assert.sameValue(iterations, 0);
|
|
callCount = callCount + 1;
|
|
};
|
|
|
|
f().next().then(() => {
|
|
assert.sameValue(callCount, 1, 'invoked exactly once');
|
|
}).then($DONE, $DONE);
|