The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/tests/ecma_5/JSON/parse-reviver-array-delete.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,89 @@
     1.4 +// Any copyright is dedicated to the Public Domain.
     1.5 +// http://creativecommons.org/licenses/publicdomain/
     1.6 +
     1.7 +var gTestfile = 'parse-reviver-array-delete.js';
     1.8 +//-----------------------------------------------------------------------------
     1.9 +var BUGNUMBER = 999999;
    1.10 +var summary = "JSON.parse with a reviver which elides array elements";
    1.11 +
    1.12 +print(BUGNUMBER + ": " + summary);
    1.13 +
    1.14 +/**************
    1.15 + * BEGIN TEST *
    1.16 + **************/
    1.17 +
    1.18 +/*
    1.19 + * The reviver deletes all properties from the to-be-returned array.  Thus
    1.20 + * stringification reveals properties on the prototype chain -- but there are
    1.21 + * none, so this result is unsurprising.
    1.22 + */
    1.23 +assertEq(JSON.parse('[1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0]',
    1.24 +                    function revive(k, v)
    1.25 +                    {
    1.26 +                      if (k === "")
    1.27 +                        return v;
    1.28 +                      return undefined;
    1.29 +                    }) + "",
    1.30 +         ",,,,,,,,,,,,,,,,,,,");
    1.31 +
    1.32 +/*
    1.33 + * Now let's try a reviver that deletes every property but a mega-huge one.
    1.34 + */
    1.35 +var str = "[";
    1.36 +var expected = "";
    1.37 +var expected2 = "";
    1.38 +for (var i = 0; i < 2048; i++)
    1.39 +{
    1.40 +  str += "1,";
    1.41 +  if (i === 2047)
    1.42 +  {
    1.43 +    expected += "1";
    1.44 +    expected2 += "1";
    1.45 +  }
    1.46 +  if (i === 3)
    1.47 +    expected2 += "17";
    1.48 +  expected += ",";
    1.49 +  expected2 += ",";
    1.50 +}
    1.51 +str += "1]";
    1.52 +
    1.53 +assertEq(JSON.parse(str,
    1.54 +                    function reviver(k, v)
    1.55 +                    {
    1.56 +                      if (k === "" || k === "2047")
    1.57 +                        return v;
    1.58 +                      return undefined;
    1.59 +                    }) + "",
    1.60 +         expected);
    1.61 +
    1.62 +
    1.63 +Array.prototype[3] = 17;
    1.64 +
    1.65 +/* Now, with a property on the prototype chain, it'll show through. */
    1.66 +assertEq(JSON.parse('[1,2,3,4,5,6,7,8,9,0,1,2,3,4,5,6,7,8,9,0]',
    1.67 +                    function revive(k, v)
    1.68 +                    {
    1.69 +                      if (k === "")
    1.70 +                        return v;
    1.71 +                      return undefined;
    1.72 +                    }) + "",
    1.73 +         ",,,17,,,,,,,,,,,,,,,,");
    1.74 +
    1.75 +
    1.76 +/* And here too. */
    1.77 +assertEq(JSON.parse(str,
    1.78 +                    function reviver(k, v)
    1.79 +                    {
    1.80 +                      if (k === "" || k === "2047")
    1.81 +                        return v;
    1.82 +                      return undefined;
    1.83 +                    }) + "",
    1.84 +         expected2);
    1.85 +
    1.86 +
    1.87 +/******************************************************************************/
    1.88 +
    1.89 +if (typeof reportCompare === "function")
    1.90 +  reportCompare(true, true);
    1.91 +
    1.92 +print("Tests complete");