// This file was procedurally generated from the following sources: // - src/dstr-assignment/array-rest-put-prop-ref-user-err-iter-close-skip.case // - src/dstr-assignment/error/for-of.template /*--- description: IteratorClose is not called when value assignment produces an abrupt completion. (For..of statement) esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation es6id: 13.7.5.11 features: [Symbol.iterator, destructuring-binding] flags: [generated] info: | IterationStatement : for ( LeftHandSideExpression of AssignmentExpression ) Statement 1. Let keyResult be the result of performing ? ForIn/OfHeadEvaluation(« », AssignmentExpression, iterate). 2. Return ? ForIn/OfBodyEvaluation(LeftHandSideExpression, Statement, keyResult, assignment, labelSet). 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation [...] 4. If destructuring is true and if lhsKind is assignment, then a. Assert: lhs is a LeftHandSideExpression. b. Let assignmentPattern be the parse of the source text corresponding to lhs using AssignmentPattern as the goal symbol. [...] ArrayAssignmentPattern : [ Elisionopt AssignmentRestElement ] [...] 5. Let result be the result of performing IteratorDestructuringAssignmentEvaluation of AssignmentRestElement with iteratorRecord as the argument 6. If iteratorRecord.[[done]] is false, return IteratorClose(iterator, result). AssignmentRestElement[Yield] : ... DestructuringAssignmentTarget [...] 4. Repeat while iteratorRecord.[[done]] is false [...] d. If next is false, set iteratorRecord.[[done]] to true. [...] 5. If DestructuringAssignmentTarget is neither an ObjectLiteral nor an ArrayLiteral, then a. Return PutValue(lref, A). ---*/ var nextCount = 0; var returnCount = 0; var iterable = {}; var iterator = { next: function() { nextCount += 1; return { done: true }; }, return: function() { returnCount += 1; } }; var obj = Object.defineProperty({}, 'poisoned', { set: function(x) { throw new Test262Error(); } }); iterable[Symbol.iterator] = function() { return iterator; }; var counter = 0; assert.throws(Test262Error, function() { for ([...obj.poisoned] of [iterable]) { counter += 1; } counter += 1; }); assert.sameValue(counter, 0); assert.sameValue(nextCount, 1); assert.sameValue(returnCount, 0);