The Tor Browser / file comparison
comparison: js/src/tests/ecma_5/JSON/stringify-replacer-array-hijinks.js
js/src/tests/ecma_5/JSON/stringify-replacer-array-hijinks.js
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
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| -1:000000000000 | 0:f7c2c812ce63 |
|---|---|
| 1 // Any copyright is dedicated to the Public Domain. | |
| 2 // http://creativecommons.org/licenses/publicdomain/ | |
| 3 | |
| 4 var gTestfile = 'stringify-replacer-array-hijinks.js'; | |
| 5 //----------------------------------------------------------------------------- | |
| 6 var BUGNUMBER = 648471; | |
| 7 var summary = | |
| 8 "Better/more correct handling for replacer arrays with getter array index " + | |
| 9 "properties"; | |
| 10 | |
| 11 print(BUGNUMBER + ": " + summary); | |
| 12 | |
| 13 /************** | |
| 14 * BEGIN TEST * | |
| 15 **************/ | |
| 16 | |
| 17 var replacer = [0, 1, 2, 3]; | |
| 18 Object.prototype[3] = 3; | |
| 19 Object.defineProperty(replacer, 1, { | |
| 20 get: function() | |
| 21 { | |
| 22 Object.defineProperty(replacer, 4, { value: 4 }); | |
| 23 delete replacer[2]; | |
| 24 delete replacer[3]; | |
| 25 replacer[5] = 5; | |
| 26 return 1; | |
| 27 } | |
| 28 }); | |
| 29 | |
| 30 var s = | |
| 31 JSON.stringify({0: { 1: { 3: { 4: { 5: { 2: "omitted" } } } } } }, replacer); | |
| 32 | |
| 33 // The replacer array's length is as seen on first query, so property names are | |
| 34 // accumulated for indexes i ∈ {0, 1, 2, 3}, but index 1 deletes 2 and 3, so 2 | |
| 35 // isn't seen but 3 is seen as Object.prototype[3]. | |
| 36 assertEq('{"0":{"1":{"3":{"3":3}},"3":3},"3":3}', s); | |
| 37 | |
| 38 | |
| 39 var replacer = [0, 1, 2, 3]; | |
| 40 Object.defineProperty(replacer, 0, { | |
| 41 get: function() | |
| 42 { | |
| 43 replacer.length = 0; | |
| 44 return {}; | |
| 45 } | |
| 46 }); | |
| 47 | |
| 48 // The replacer.length truncation means only properties on the prototype chain | |
| 49 // shine through, but it doesn't affect the original bounds of the iteration | |
| 50 // used to determine property names which will be included in the final string. | |
| 51 assertEq(JSON.stringify({ 0: 0, 1: 1, 2: 2, 3: 3 }, replacer), | |
| 52 '{"3":3}'); | |
| 53 | |
| 54 /******************************************************************************/ | |
| 55 | |
| 56 if (typeof reportCompare === "function") | |
| 57 reportCompare(true, true); | |
| 58 | |
| 59 print("Tests complete"); |
