// Copyright (C) 2015 the V8 project authors. All rights reserved. // This code is governed by the BSD license found in the LICENSE file. /*--- es6id: 13.6.4.13 description: > Iterators should be closed via their `return` method when iteration is interrupted via a `break` statement. features: [Symbol.iterator] ---*/ var startedCount = 0; var returnCount = 0; var iterationCount = 0; var iterable = {}; iterable[Symbol.iterator] = function() { return { next: function() { startedCount += 1; return { done: false, value: null }; }, return: function() { returnCount += 1; return {}; } }; }; for (var x of iterable) { assert.sameValue( startedCount, 1, 'Value is retrieved' ); assert.sameValue( returnCount, 0, 'Iterator is not closed' ); iterationCount += 1; break; } assert.sameValue( startedCount, 1, 'Iterator does not restart following interruption' ); assert.sameValue(iterationCount, 1, 'A single iteration occurs'); assert.sameValue( returnCount, 1, 'Iterator is closed after `break` statement' ); reportCompare(0, 0);