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81 lines
2.5 KiB
JavaScript
81 lines
2.5 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/arguments/args-trailing-comma-spread-operator.case
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// - src/arguments/default/cls-expr-async-gen-meth.template
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/*---
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description: A trailing comma should not increase the arguments.length, using spread args (class expression async generator method)
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esid: sec-class-definitions-runtime-semantics-evaluation
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features: [async-iteration]
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flags: [generated, async]
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info: |
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ClassExpression : class BindingIdentifieropt ClassTail
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1. If BindingIdentifieropt is not present, let className be undefined.
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2. Else, let className be StringValue of BindingIdentifier.
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3. Let value be the result of ClassDefinitionEvaluation of ClassTail
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with 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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Trailing comma in the arguments list
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Left-Hand-Side Expressions
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Arguments :
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( )
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( ArgumentList )
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( ArgumentList , )
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ArgumentList :
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AssignmentExpression
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... AssignmentExpression
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ArgumentList , AssignmentExpression
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ArgumentList , ... AssignmentExpression
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---*/
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var arr = [2, 3];
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var callCount = 0;
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var C = class {
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async *method() {
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assert.sameValue(arguments.length, 4);
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assert.sameValue(arguments[0], 42);
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assert.sameValue(arguments[1], 1);
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assert.sameValue(arguments[2], 2);
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assert.sameValue(arguments[3], 3);
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callCount = callCount + 1;
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}
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};
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// Stores a reference `ref` for case evaluation
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var ref = C.prototype.method;
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ref(42, ...[1], ...arr,).next().then(() => {
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assert.sameValue(callCount, 1, 'method invoked exactly once');
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}).then($DONE, $DONE);
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