tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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iterator-close-non-object.js (735B)

      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    If an iterator's `return` method returns a non-Object value, a TypeError
      7    should be thrown.
      8 features: [Symbol.iterator]
      9 ---*/
     10 
     11 var iterable = {};
     12 var iterationCount = 0;
     13 
     14 iterable[Symbol.iterator] = function() {
     15  return {
     16    next: function() {
     17      return { done: false, value: null };
     18    },
     19    return: function() {
     20      return 0;
     21    }
     22  };
     23 };
     24 
     25 assert.throws(TypeError, function() {
     26  for (var x of iterable) {
     27    iterationCount += 1;
     28    break;
     29  }
     30 });
     31 
     32 assert.sameValue(iterationCount, 1, 'The loop body is evaluated');
     33 
     34 reportCompare(0, 0);