mirror of https://github.com/tc39/test262.git
47 lines
1.3 KiB
JavaScript
47 lines
1.3 KiB
JavaScript
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// This file was procedurally generated from the following sources:
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// - src/dstr-binding/ary-init-iter-close.case
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// - src/dstr-binding/default/const-stmt.template
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/*---
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description: Iterator is closed when not exhausted by pattern evaluation (`const` statement)
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esid: sec-let-and-const-declarations-runtime-semantics-evaluation
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es6id: 13.3.1.4
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features: [Symbol.iterator, destructuring-binding]
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flags: [generated]
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info: |
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LexicalBinding : BindingPattern Initializer
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1. Let rhs be the result of evaluating Initializer.
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2. Let value be GetValue(rhs).
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3. ReturnIfAbrupt(value).
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4. Let env be the running execution context's LexicalEnvironment.
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5. Return the result of performing BindingInitialization for BindingPattern
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using value and env as the arguments.
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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: false };
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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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const [x] = iter;
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assert.sameValue(doneCallCount, 1);
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