mirror of https://github.com/tc39/test262.git
43 lines
1.5 KiB
JavaScript
43 lines
1.5 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/dstr-binding/ary-ptrn-elem-ary-elem-init.case
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// - src/dstr-binding/default/async-gen-func-decl.template
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/*---
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description: BindingElement with array binding pattern and initializer is used (async generator function declaration)
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esid: sec-asyncgenerator-definitions-instantiatefunctionobject
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features: [async-iteration]
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flags: [generated, async]
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info: |
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AsyncGeneratorDeclaration : async [no LineTerminator here] function * BindingIdentifier
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( FormalParameters ) { AsyncGeneratorBody }
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[...]
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3. Let F be ! AsyncGeneratorFunctionCreate(Normal, FormalParameters, AsyncGeneratorBody,
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scope, strict).
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[...]
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13.3.3.6 Runtime Semantics: IteratorBindingInitialization
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BindingElement : BindingPatternInitializer opt
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[...]
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2. If iteratorRecord.[[done]] is true, let v be undefined.
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3. 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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4. Return the result of performing BindingInitialization of BindingPattern
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with v and environment as the arguments.
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---*/
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var callCount = 0;
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async function* f([[x, y, z] = [4, 5, 6]]) {
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assert.sameValue(x, 4);
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assert.sameValue(y, 5);
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assert.sameValue(z, 6);
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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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