mirror of https://github.com/tc39/test262.git
52 lines
1.4 KiB
JavaScript
52 lines
1.4 KiB
JavaScript
// This file was procedurally generated from the following sources:
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// - src/dstr-binding/ary-init-iter-no-close.case
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// - src/dstr-binding/default/async-gen-func-decl.template
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/*---
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description: Iterator is not closed when exhausted by pattern evaluation (async generator function declaration)
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esid: sec-asyncgenerator-definitions-instantiatefunctionobject
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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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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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13.3.3.5 Runtime Semantics: BindingInitialization
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BindingPattern : ArrayBindingPattern
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[...]
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4. If iteratorRecord.[[done]] is false, return ? IteratorClose(iterator,
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result).
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[...]
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---*/
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var doneCallCount = 0;
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var iter = {};
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iter[Symbol.iterator] = function() {
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return {
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next: function() {
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return { value: null, done: true };
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},
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return: function() {
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doneCallCount += 1;
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return {};
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}
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};
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};
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var callCount = 0;
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async function* f([x]) {
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assert.sameValue(doneCallCount, 0);
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callCount = callCount + 1;
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};
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f(iter).next().then(() => {
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assert.sameValue(callCount, 1, 'invoked exactly once');
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}).then($DONE, $DONE);
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