mirror of https://github.com/tc39/test262.git
48 lines
1.6 KiB
JavaScript
48 lines
1.6 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/function-forms/dflt-params-arg-val-undefined.case
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// - src/function-forms/default/async-gen-func-decl.template
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/*---
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description: Use of intializer when argument value is `undefined` (async generator function declaration)
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esid: sec-asyncgenerator-definitions-instantiatefunctionobject
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features: [default-parameters, async-iteration]
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flags: [generated, async]
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info: |
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AsyncGeneratorDeclaration : async [no LineTerminator here] function * BindingIdentifier
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( FormalParameters ) { AsyncGeneratorBody }
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[...]
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3. Let F be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, AsyncGeneratorBody,
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scope, strict).
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[...]
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14.1.19 Runtime Semantics: IteratorBindingInitialization
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FormalsList : FormalsList , FormalParameter
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[...]
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23. Let iteratorRecord be Record {[[Iterator]]:
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CreateListIterator(argumentsList), [[Done]]: false}.
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24. If hasDuplicates is true, then
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[...]
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25. Else,
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a. Perform ? IteratorBindingInitialization for formals with
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iteratorRecord and env as arguments.
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[...]
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---*/
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var callCount = 0;
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// Stores a reference `ref` for case evaluation
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async function* ref(fromLiteral = 23, fromExpr = 45, fromHole = 99) {
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assert.sameValue(fromLiteral, 23);
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assert.sameValue(fromExpr, 45);
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assert.sameValue(fromHole, 99);
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callCount = callCount + 1;
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}
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ref(undefined, void 0).next().then(() => {
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assert.sameValue(callCount, 1, 'generator function invoked exactly once');
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}).then($DONE, $DONE);
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