reviver-object-define-prop-err.js (1326B)
1 // Copyright (C) 2016 the V8 project authors. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 /*--- 4 esid: sec-internalizejsonproperty 5 description: Abrupt completion from defining object property while reviving 6 info: | 7 JSON.parse ( text [ , reviver ] ) 8 9 [...] 10 7. If IsCallable(reviver) is true, then 11 [...] 12 e. Return ? InternalizeJSONProperty(root, rootName). 13 14 Runtime Semantics: InternalizeJSONProperty ( holder, name) 15 16 1. Let val be ? Get(holder, name). 17 2. If Type(val) is Object, then 18 a. Let isArray be ? IsArray(val). 19 b. If isArray is true, then 20 [...] 21 c. Else, 22 i. Let keys be ? EnumerableOwnProperties(val, "key"). 23 ii. For each String P in keys do, 24 1. Let newElement be ? InternalizeJSONProperty(val, P). 25 2. If newElement is undefined, then 26 [...] 27 3. Else, 28 a. Perform ? CreateDataProperty(val, P, newElement). 29 features: [Proxy] 30 ---*/ 31 32 var badDefine = new Proxy({ 33 0: null 34 }, { 35 defineProperty: function() { 36 throw new Test262Error(); 37 } 38 }); 39 40 assert.throws(Test262Error, function() { 41 JSON.parse('["first", null]', function(_, value) { 42 if (value === 'first') { 43 this[1] = badDefine; 44 } 45 return value; 46 }); 47 }); 48 49 reportCompare(0, 0);