yield-from-finally.js

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// 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 within

    the `finally` block of `try` statements.

features: [generators]

---*/

function* values() {

  yield 1;

  yield 1;

var dataIterator = values();

var controlIterator = (function*() {

  for (var x of dataIterator) {

    try {

    } finally {

      i++;

      yield;

      j++;

    k++;

  l++;

})();

var i = 0;

var j = 0;

var k = 0;

var l = 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-try');

assert.sameValue(l, 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, 1, 'Second iteration: post-try');

assert.sameValue(l, 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, 2, 'Third iteration: post-try');

assert.sameValue(l, 1, 'Third iteration: post-for-of');

reportCompare(0, 0);