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The files in this patch are organized according to the following naming scheme: Prefix | Grammar production -------------------|------------------- `array-empty-` | ArrayAssignmentPattern : [ ] `array-elision-` | ArrayAssignmentPattern : [ Elision ] `array-rest-` | ArrayAssignmentPattern : [ Elisionopt AssignmentRestElement ] `array-elem-` | ArrayAssignmentPattern : [ AssignmentElementList ] `array-elem-trlg-` | ArrayAssignmentPattern : [ AssignmentElementList , Elisionopt AssignmentRestElementopt ] Suffix | Intent -------------------|------- `-abpt-close-err` | The assignment evaluation returns an abrupt completion, and the iterator's `return` method throws an error `-abpt-close-skip` | The assignment evaluation returns an abrupt completion, but IteratorClose is not invoked `-abpt-close` | The assignment evaluation returns an abrupt completion, and IteratorClose is invoked as specified `-get-err` | Abrupt completion returned from GetIterator `-nrml-close-err` | The assignment evaluation completes, and the iterator's `return` method throws an error `-nrml-close-null` | The assignment evaluation completes, and the iterator's `return` method returns a non-Object value (there is no corresponding `-abpt-` suffix because the algorithm does not reference the return value in those cases) `-nrml-close-skip` | The assignment evaluation completes, but IteratorClose is not invoked `-nrml-close` | The assignment evaluation completes, and IteratorClose is invoked as specified Not all suffixes are appropriate for all productions. Suffixes have been simplified in cases where less specificity is necessary to disambiguate test cases.
53 lines
1.4 KiB
JavaScript
53 lines
1.4 KiB
JavaScript
// Copyright (C) 2016 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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description: Abrupt completion returned during evaluation of elision
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info: |
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ArrayAssignmentPattern :
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[ AssignmentElementList , Elisionopt AssignmentRestElementopt ]
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[...]
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6. If Elision is present, then
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a. Let status be the result of performing
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IteratorDestructuringAssignmentEvaluation of Elision with
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iteratorRecord as the argument.
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b. If status is an abrupt completion, then
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i. If iteratorRecord.[[done]] is false, return
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IteratorClose(iterator, status).
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ii. Return Completion(status).
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features: [Symbol.iterator]
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es6id: 12.14.5.2
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esid: sec-runtime-semantics-destructuringassignmentevaluation
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---*/
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var nextCount = 0;
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var returnCount = 0;
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var iterable = {};
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var x;
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var iterator = {
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next: function() {
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nextCount += 1;
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if (nextCount === 2) {
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throw new Test262Error();
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}
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// Set an upper-bound to limit unnecessary iteration in non-conformant
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// implementations
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return { done: nextCount > 10 };
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},
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return: function() {
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returnCount += 1;
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}
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};
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iterable[Symbol.iterator] = function() {
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return iterator;
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};
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assert.throws(Test262Error, function() {
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[ x , , ] = iterable;
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});
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assert.sameValue(nextCount, 2);
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assert.sameValue(returnCount, 0);
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