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50 lines
1.4 KiB
JavaScript
50 lines
1.4 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/dstr-binding/ary-ptrn-elision-exhausted.case
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// - src/dstr-binding/default/async-gen-func-expr-dflt.template
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/*---
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description: Elision accepts exhausted iterator (async generator function expression (default parameter))
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esid: sec-asyncgenerator-definitions-evaluation
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features: [generators, async-iteration]
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flags: [generated, async]
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info: |
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AsyncGeneratorExpression : async [no LineTerminator here] function * ( FormalParameters ) {
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AsyncGeneratorBody }
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[...]
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3. Let closure be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters,
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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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ArrayBindingPattern : [ Elision ]
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1. Return the result of performing
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IteratorDestructuringAssignmentEvaluation of Elision with iteratorRecord
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as the argument.
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12.14.5.3 Runtime Semantics: IteratorDestructuringAssignmentEvaluation
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Elision : ,
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1. If iteratorRecord.[[done]] is false, then
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[...]
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2. Return NormalCompletion(empty).
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---*/
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var iter = function*() {}();
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iter.next();
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var callCount = 0;
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var f;
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f = async function*([,] = iter) {
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callCount = callCount + 1;
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};
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f().next().then(() => {
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assert.sameValue(callCount, 1, 'invoked exactly once');
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}).then($DONE, $DONE);
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