JSTests/test262/test/built-ins/JSON/stringify/value-proxy-revoked.js

// 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-json.stringify
es6id: 24.3.2
description: Revoked proxy value produces a TypeError
info: |
  [...]
  12. Return ? SerializeJSONProperty(the empty String, wrapper).

  24.3.2.1 Runtime Semantics: SerializeJSONProperty

  [...]
  10. If Type(value) is Object and IsCallable(value) is false, then
      a. Let isArray be ? IsArray(value).
      b. If isArray is true, return ? SerializeJSONArray(value).
      c. Else, return ? SerializeJSONObject(value).
  [...]

  7.2.2 IsArray

  [...]
  3. If argument is a Proxy exotic object, then
     a. If the value of the [[ProxyHandler]] internal slot of argument is null,
        throw a TypeError exception.
     b. Let target be the value of the [[ProxyTarget]] internal slot of
        argument.
     c. Return ? IsArray(target).
features: [Proxy]
---*/

var handle = Proxy.revocable([], {});

handle.revoke();

assert.throws(TypeError, function() {
  JSON.stringify(handle.proxy);
}, 'top-level value');

assert.throws(TypeError, function() {
  JSON.stringify([[[handle.proxy]]]);
}, 'nested value');