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42 lines
1.2 KiB
JavaScript
42 lines
1.2 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/dstr-binding/ary-ptrn-empty.case
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// - src/dstr-binding/default/async-gen-func-named-expr-dflt.template
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/*---
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description: No iteration occurs for an "empty" array binding pattern (async generator named 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 * BindingIdentifier
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( FormalParameters ) { AsyncGeneratorBody }
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[...]
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7. Let closure be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters,
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AsyncGeneratorBody, funcEnv, strict).
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[...]
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13.3.3.6 Runtime Semantics: IteratorBindingInitialization
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ArrayBindingPattern : [ ]
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1. Return NormalCompletion(empty).
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---*/
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var iterations = 0;
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var iter = function*() {
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iterations += 1;
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}();
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var callCount = 0;
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var f;
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f = async function* h([] = iter) {
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assert.sameValue(iterations, 0);
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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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