// Copyright (C) 2017 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- desc: > IteratorClose is not called when assignment evaluation has exhausted the iterator info: | ArrayAssignmentPattern : [ AssignmentElementList ] [...] 4. If iteratorRecord.[[Done]] is false, return ? IteratorClose(iterator, result). 5. Return result. features: [Symbol.iterator] template: async-generator esid: sec-runtime-semantics-destructuringassignmentevaluation ---*/ //- setup let nextCount = 0; let returnCount = 0; let _; let iterator = { next() { nextCount += 1; return { done: true }; }, return() { returnCount += 1; return {}; } }; let iterable = { [Symbol.iterator]() { return iterator; } }; //- elems [ _ ] //- vals iterable //- body assert.sameValue(nextCount, 1); assert.sameValue(returnCount, 0); //- teardown iter.next().then(() => { assert.sameValue(iterCount, 1); }).then($DONE, $DONE);