value-tojson-result.js (1083B)
1 // Copyright (C) 2019 Aleksey Shvayka. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 /*--- 4 esid: sec-serializejsonproperty 5 description: > 6 Result of toJSON method is stringified. 7 info: | 8 JSON.stringify ( value [ , replacer [ , space ] ] ) 9 10 [...] 11 12. Return ? SerializeJSONProperty(the empty String, wrapper). 12 13 SerializeJSONProperty ( key, holder ) 14 15 [...] 16 2. If Type(value) is Object, then 17 a. Let toJSON be ? Get(value, "toJSON"). 18 b. If IsCallable(toJSON) is true, then 19 i. Set value to ? Call(toJSON, value, « key »). 20 ---*/ 21 22 assert.sameValue( 23 JSON.stringify({ 24 toJSON: function() { return [false]; }, 25 }), 26 '[false]' 27 ); 28 29 var arr = [true]; 30 arr.toJSON = function() {}; 31 assert.sameValue(JSON.stringify(arr), undefined); 32 33 var str = new String('str'); 34 str.toJSON = function() { return null; }; 35 assert.sameValue(JSON.stringify({key: str}), '{"key":null}'); 36 37 var num = new Number(14); 38 num.toJSON = function() { return {key: 7}; }; 39 assert.sameValue(JSON.stringify([num]), '[{"key":7}]'); 40 41 reportCompare(0, 0);