mirror of https://github.com/tc39/test262.git
67 lines
2.4 KiB
JavaScript
67 lines
2.4 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/dstr-binding/ary-ptrn-rest-id-exhausted.case
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// - src/dstr-binding/default/cls-decl-async-gen-meth-dflt.template
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/*---
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description: RestElement applied to an exhausted iterator (class expression async generator method (default parameters))
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esid: sec-class-definitions-runtime-semantics-evaluation
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features: [Symbol.iterator, async-iteration]
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flags: [generated, async]
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info: |
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ClassDeclaration : class BindingIdentifier ClassTail
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1. Let className be StringValue of BindingIdentifier.
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2. Let value be the result of ClassDefinitionEvaluation of ClassTail with
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argument className.
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[...]
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14.5.14 Runtime Semantics: ClassDefinitionEvaluation
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21. For each ClassElement m in order from methods
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a. If IsStatic of m is false, then
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i. Let status be the result of performing
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PropertyDefinitionEvaluation for m with arguments proto and
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false.
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[...]
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Runtime Semantics: PropertyDefinitionEvaluation
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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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BindingRestElement : ... BindingIdentifier
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1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
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environment).
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2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
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[...]
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b. If iteratorRecord.[[done]] is true, then
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i. If environment is undefined, return PutValue(lhs, A).
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ii. Return InitializeReferencedBinding(lhs, A).
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---*/
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var callCount = 0;
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class C {
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async *method([, , ...x] = [1, 2]) {
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assert(Array.isArray(x));
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assert.sameValue(x.length, 0);
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callCount = callCount + 1;
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}
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};
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new C().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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