summaryrefslogtreecommitdiffstats
path: root/js/src/tests/test262/built-ins/JSON/parse/reviver-array-length-get-err.js
blob: 1004af33e00f78f3d7a533384f1d1e055a69396f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-internalizejsonproperty
description: >
  Abrupt completion from array "length" property access while reviving
info: |
  JSON.parse ( text [ , reviver ] )

  [...]
  7. If IsCallable(reviver) is true, then
     [...]
     e. Return ? InternalizeJSONProperty(root, rootName).

  Runtime Semantics: InternalizeJSONProperty ( holder, name)

  1. Let val be ? Get(holder, name).
  2. If Type(val) is Object, then
     a. Let isArray be ? IsArray(val).
     b. If isArray is true, then
        i. Set I to 0.
        ii. Let len be ? ToLength(? Get(val, "length")).
features: [Proxy]
---*/

var badLength = new Proxy([], {
  get: function(_, name) {
    if (name === 'length') {
      throw new Test262Error();
    }
  }
});

assert.throws(Test262Error, function() {
  JSON.parse('[0,0]', function() {
    this[1] = badLength;
  });
});

reportCompare(0, 0);