yield-star-from-finally.js (1869B)
1 // Copyright (C) 2015 the V8 project authors. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 /*--- 4 es6id: 13.6.4.13 5 description: > 6 Control flow during body evaluation should honor `yield *` statements 7 within the `finally` block of `try` statements. 8 features: [generators] 9 ---*/ 10 11 function* values() { 12 yield 1; 13 yield 1; 14 } 15 var dataIterator = values(); 16 var controlIterator = (function*() { 17 for (var x of dataIterator) { 18 try { 19 } finally { 20 i++; 21 yield * values(); 22 j++; 23 } 24 k++; 25 } 26 27 l++; 28 })(); 29 var i = 0; 30 var j = 0; 31 var k = 0; 32 var l = 0; 33 34 controlIterator.next(); 35 assert.sameValue(i, 1, 'First iteration: pre-yield'); 36 assert.sameValue(j, 0, 'First iteration: post-yield'); 37 assert.sameValue(k, 0, 'First iteration: post-try'); 38 assert.sameValue(l, 0, 'First iteration: post-for-of'); 39 40 controlIterator.next(); 41 assert.sameValue(i, 1, 'Second iteration: pre-yield'); 42 assert.sameValue(j, 0, 'Second iteration: post-yield'); 43 assert.sameValue(k, 0, 'Second iteration: post-try'); 44 assert.sameValue(l, 0, 'Second iteration: post-for-of'); 45 46 controlIterator.next(); 47 assert.sameValue(i, 2, 'Third iteration: pre-yield'); 48 assert.sameValue(j, 1, 'Third iteration: post-yield'); 49 assert.sameValue(k, 1, 'Third iteration: post-try'); 50 assert.sameValue(l, 0, 'Third iteration: post-for-of'); 51 52 controlIterator.next(); 53 assert.sameValue(i, 2, 'Fourth iteration: pre-yield'); 54 assert.sameValue(j, 1, 'Fourth iteration: post-yield'); 55 assert.sameValue(k, 1, 'Fourth iteration: post-try'); 56 assert.sameValue(l, 0, 'Fourth iteration: post-for-of'); 57 58 controlIterator.next(); 59 assert.sameValue(i, 2, 'Fifth iteration: pre-yield'); 60 assert.sameValue(j, 2, 'Fifth iteration: post-yield'); 61 assert.sameValue(k, 2, 'Fifth iteration: post-try'); 62 assert.sameValue(l, 1, 'Fifth iteration: post-for-of'); 63 64 reportCompare(0, 0);