// 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: > Control flow during body evaluation should honor `yield` statements. features: [generators] ---*/ function* values() { yield 1; yield 1; } var dataIterator = values(); var controlIterator = (function*() { for (var x of dataIterator) { i++; yield; j++; } k++; })(); var i = 0; var j = 0; var k = 0; controlIterator.next(); assert.sameValue(i, 1, 'First iteration: pre-yield'); assert.sameValue(j, 0, 'First iteration: post-yield'); assert.sameValue(k, 0, 'First iteration: post-for-of'); controlIterator.next(); assert.sameValue(i, 2, 'Second iteration: pre-yield'); assert.sameValue(j, 1, 'Second iteration: post-yield'); assert.sameValue(k, 0, 'Second iteration: post-for-of'); controlIterator.next(); assert.sameValue(i, 2, 'Third iteration: pre-yield'); assert.sameValue(j, 2, 'Third iteration: post-yield'); assert.sameValue(k, 1, 'Third iteration: post-for-of');