JSTests/test262/test/built-ins/JSON/parse/revived-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.parse
description: Behavior when revived value is a revoked Proxy exotic object
info: |
  [...]
  7. If IsCallable(reviver) is true, then
     a. Let root be ObjectCreate(%ObjectPrototype%).
     b. Let rootName be the empty String.
     c. Let status be CreateDataProperty(root, rootName, unfiltered).
     d. Assert: status is true.
     e. Return ? InternalizeJSONProperty(root, rootName).

  24.3.1.1 Runtime Semantics: InternalizeJSONProperty

  [...]
  2. If Type(val) is Object, then
     a. Let isArray be ? IsArray(val).

  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([], {});
var returnCount = 0;

handle.revoke();

assert.throws(TypeError, function() {
  JSON.parse('[null, null]', function() {
    this[1] = handle.proxy;
    returnCount += 1;
  });
});

assert.sameValue(returnCount, 1, 'invocation returns normally');