mirror of https://github.com/tc39/test262.git
52 lines
1.9 KiB
JavaScript
52 lines
1.9 KiB
JavaScript
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// This file was procedurally generated from the following sources:
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// - src/dstr-binding/ary-ptrn-elem-id-init-fn-name-cover.case
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// - src/dstr-binding/default/async-gen-method-dflt.template
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/*---
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description: SingleNameBinding does assign name to "anonymous" functions "through" cover grammar (async generator method (default parameter))
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esid: sec-asyncgenerator-definitions-propertydefinitionevaluation
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features: [async-iteration]
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flags: [generated, async]
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info: |
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AsyncGeneratorMethod :
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async [no LineTerminator here] * PropertyName ( UniqueFormalParameters )
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{ AsyncGeneratorBody }
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1. Let propKey be the result of evaluating PropertyName.
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2. ReturnIfAbrupt(propKey).
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3. If the function code for this AsyncGeneratorMethod is strict mode code, let strict be true.
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Otherwise let strict be false.
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4. Let scope be the running execution context's LexicalEnvironment.
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5. Let closure be ! AsyncGeneratorFunctionCreate(Method, UniqueFormalParameters,
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AsyncGeneratorBody, scope, strict).
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[...]
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13.3.3.6 Runtime Semantics: IteratorBindingInitialization
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SingleNameBinding : BindingIdentifier Initializeropt
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[...]
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6. If Initializer is present and v is undefined, then
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a. Let defaultValue be the result of evaluating Initializer.
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b. Let v be GetValue(defaultValue).
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c. ReturnIfAbrupt(v).
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d. If IsAnonymousFunctionDefinition(Initializer) is true, then
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[...]
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7. If environment is undefined, return PutValue(lhs, v).
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8. Return InitializeReferencedBinding(lhs, v).
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---*/
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var callCount = 0;
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var obj = {
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async *method([cover = (function () {}), xCover = (0, function() {})] = []) {
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assert.sameValue(cover.name, 'cover');
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assert.notSameValue(xCover.name, 'xCover');
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callCount = callCount + 1;
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}
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};
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obj.method().next().then(() => {
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assert.sameValue(callCount, 1, 'invoked exactly once');
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}).then($DONE, $DONE);
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