mirror of https://github.com/tc39/test262.git
52 lines
1.6 KiB
JavaScript
52 lines
1.6 KiB
JavaScript
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// This file was procedurally generated from the following sources:
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// - src/dstr-binding/ary-ptrn-elem-id-iter-val-err.case
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// - src/dstr-binding/error/var-stmt.template
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/*---
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description: Error forwarding when IteratorValue returns an abrupt completion (`var` statement)
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esid: sec-variable-statement-runtime-semantics-evaluation
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es6id: 13.3.2.4
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features: [destructuring-binding]
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flags: [generated]
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info: |
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VariableDeclaration : BindingPattern Initializer
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1. Let rhs be the result of evaluating Initializer.
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2. Let rval be GetValue(rhs).
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3. ReturnIfAbrupt(rval).
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4. Return the result of performing BindingInitialization for
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BindingPattern passing rval and undefined as arguments.
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13.3.3.6 Runtime Semantics: IteratorBindingInitialization
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SingleNameBinding : BindingIdentifier Initializeropt
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[...]
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4. If iteratorRecord.[[done]] is false, then
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a. Let next be IteratorStep(iteratorRecord.[[iterator]]).
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b. If next is an abrupt completion, set iteratorRecord.[[done]] to true.
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c. ReturnIfAbrupt(next).
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d. If next is false, set iteratorRecord.[[done]] to true.
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e. Else,
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i. Let v be IteratorValue(next).
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ii. If v is an abrupt completion, set iteratorRecord.[[done]] to
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true.
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iii. ReturnIfAbrupt(v).
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---*/
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var poisonedValue = Object.defineProperty({}, 'value', {
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get: function() {
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throw new Test262Error();
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}
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});
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var g = {};
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g[Symbol.iterator] = function() {
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return {
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next: function() {
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return poisonedValue;
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}
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};
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};
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assert.throws(Test262Error, function() {
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var [x] = g;
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});
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