| // Copyright (C) 2012 Ecma International. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| /*--- |
| esid: sec-serializejsonproperty |
| description: > |
| Number objects are converted to primitives using ToNumber. |
| info: | |
| JSON.stringify ( value [ , replacer [ , space ] ] ) |
| |
| [...] |
| 12. Return ? SerializeJSONProperty(the empty String, wrapper). |
| |
| SerializeJSONProperty ( key, holder ) |
| |
| [...] |
| 4. If Type(value) is Object, then |
| a. If value has a [[NumberData]] internal slot, then |
| i. Set value to ? ToNumber(value). |
| [...] |
| 9. If Type(value) is Number, then |
| a. If value is finite, return ! ToString(value). |
| ---*/ |
| |
| assert.sameValue(JSON.stringify(new Number(8.5)), '8.5'); |
| |
| var toPrimitiveReplacer = function(_key, value) { |
| if (value === 'str') { |
| var num = new Number(42); |
| num.toString = function() { throw new Test262Error('should not be called'); }; |
| num.valueOf = function() { return 2; }; |
| return num; |
| } |
| |
| return value; |
| }; |
| |
| assert.sameValue(JSON.stringify(['str'], toPrimitiveReplacer), '[2]'); |
| |
| var abruptToJSON = function() { |
| var num = new Number(3.14); |
| num.toString = function() { throw new Test262Error(); }; |
| num.valueOf = function() { throw new Test262Error(); }; |
| return num; |
| }; |
| |
| assert.throws(Test262Error, function() { |
| JSON.stringify({ |
| key: { |
| toJSON: abruptToJSON, |
| }, |
| }); |
| }); |