js/src/tests/ecma_5/JSON/parse-reviver-array-delete.js@6474c204b198 (annotated)
js/src/tests/ecma_5/JSON/parse-reviver-array-delete.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | // Any copyright is dedicated to the Public Domain. |
| michael@0 | 2 | // http://creativecommons.org/licenses/publicdomain/ |
| michael@0 | 3 | |
| michael@0 | 4 | var gTestfile = 'parse-reviver-array-delete.js'; |
| michael@0 | 5 | //----------------------------------------------------------------------------- |
| michael@0 | 6 | var BUGNUMBER = 999999; |
| michael@0 | 7 | var summary = "JSON.parse with a reviver which elides array elements"; |
| michael@0 | 8 | |
| michael@0 | 9 | print(BUGNUMBER + ": " + summary); |
| michael@0 | 10 | |
| michael@0 | 11 | /************** |
| michael@0 | 12 | * BEGIN TEST * |
| michael@0 | 13 | **************/ |
| michael@0 | 14 | |
| michael@0 | 15 | /* |
| michael@0 | 16 | * The reviver deletes all properties from the to-be-returned array. Thus |
| michael@0 | 17 | * stringification reveals properties on the prototype chain -- but there are |
| michael@0 | 18 | * none, so this result is unsurprising. |
| michael@0 | 19 | */ |
| michael@0 | 20 | assertEq(JSON.parse('[1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0]', |
| michael@0 | 21 | function revive(k, v) |
| michael@0 | 22 | { |
| michael@0 | 23 | if (k === "") |
| michael@0 | 24 | return v; |
| michael@0 | 25 | return undefined; |
| michael@0 | 26 | }) + "", |
| michael@0 | 27 | ",,,,,,,,,,,,,,,,,,,"); |
| michael@0 | 28 | |
| michael@0 | 29 | /* |
| michael@0 | 30 | * Now let's try a reviver that deletes every property but a mega-huge one. |
| michael@0 | 31 | */ |
| michael@0 | 32 | var str = "["; |
| michael@0 | 33 | var expected = ""; |
| michael@0 | 34 | var expected2 = ""; |
| michael@0 | 35 | for (var i = 0; i < 2048; i++) |
| michael@0 | 36 | { |
| michael@0 | 37 | str += "1,"; |
| michael@0 | 38 | if (i === 2047) |
| michael@0 | 39 | { |
| michael@0 | 40 | expected += "1"; |
| michael@0 | 41 | expected2 += "1"; |
| michael@0 | 42 | } |
| michael@0 | 43 | if (i === 3) |
| michael@0 | 44 | expected2 += "17"; |
| michael@0 | 45 | expected += ","; |
| michael@0 | 46 | expected2 += ","; |
| michael@0 | 47 | } |
| michael@0 | 48 | str += "1]"; |
| michael@0 | 49 | |
| michael@0 | 50 | assertEq(JSON.parse(str, |
| michael@0 | 51 | function reviver(k, v) |
| michael@0 | 52 | { |
| michael@0 | 53 | if (k === "" || k === "2047") |
| michael@0 | 54 | return v; |
| michael@0 | 55 | return undefined; |
| michael@0 | 56 | }) + "", |
| michael@0 | 57 | expected); |
| michael@0 | 58 | |
| michael@0 | 59 | |
| michael@0 | 60 | Array.prototype[3] = 17; |
| michael@0 | 61 | |
| michael@0 | 62 | /* Now, with a property on the prototype chain, it'll show through. */ |
| michael@0 | 63 | assertEq(JSON.parse('[1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0]', |
| michael@0 | 64 | function revive(k, v) |
| michael@0 | 65 | { |
| michael@0 | 66 | if (k === "") |
| michael@0 | 67 | return v; |
| michael@0 | 68 | return undefined; |
| michael@0 | 69 | }) + "", |
| michael@0 | 70 | ",,,17,,,,,,,,,,,,,,,,"); |
| michael@0 | 71 | |
| michael@0 | 72 | |
| michael@0 | 73 | /* And here too. */ |
| michael@0 | 74 | assertEq(JSON.parse(str, |
| michael@0 | 75 | function reviver(k, v) |
| michael@0 | 76 | { |
| michael@0 | 77 | if (k === "" || k === "2047") |
| michael@0 | 78 | return v; |
| michael@0 | 79 | return undefined; |
| michael@0 | 80 | }) + "", |
| michael@0 | 81 | expected2); |
| michael@0 | 82 | |
| michael@0 | 83 | |
| michael@0 | 84 | /******************************************************************************/ |
| michael@0 | 85 | |
| michael@0 | 86 | if (typeof reportCompare === "function") |
| michael@0 | 87 | reportCompare(true, true); |
| michael@0 | 88 | |
| michael@0 | 89 | print("Tests complete"); |
