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/Object/extensibility-01.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,103 @@
     1.4 +/*
     1.5 + * Any copyright is dedicated to the Public Domain.
     1.6 + * http://creativecommons.org/licenses/publicdomain/
     1.7 + * Contributor:
     1.8 + *   Jeff Walden <jwalden+code@mit.edu>
     1.9 + */
    1.10 +
    1.11 +var gTestfile = '15.2.3.10-01.js';
    1.12 +//-----------------------------------------------------------------------------
    1.13 +var BUGNUMBER = 492849;
    1.14 +var summary = 'ES5: Implement Object.preventExtensions, Object.isExtensible';
    1.15 +
    1.16 +print(BUGNUMBER + ": " + summary);
    1.17 +
    1.18 +/**************
    1.19 + * BEGIN TEST *
    1.20 + **************/
    1.21 +
    1.22 +function trySetProperty(o, p, v, strict)
    1.23 +{
    1.24 +  function strictSetProperty()
    1.25 +  {
    1.26 +    "use strict";
    1.27 +    o[p] = v;
    1.28 +  }
    1.29 +
    1.30 +  function setProperty()
    1.31 +  {
    1.32 +    o[p] = v;
    1.33 +  }
    1.34 +
    1.35 +  assertEq(Object.prototype.hasOwnProperty.call(o, p), false);
    1.36 +
    1.37 +  try
    1.38 +  {
    1.39 +    if (strict)
    1.40 +      strictSetProperty();
    1.41 +    else
    1.42 +      setProperty();
    1.43 +    if (o[p] === v)
    1.44 +      return "set";
    1.45 +    if (p in o)
    1.46 +      return "set-converted";
    1.47 +    return "swallowed";
    1.48 +  }
    1.49 +  catch (e)
    1.50 +  {
    1.51 +    return "throw";
    1.52 +  }
    1.53 +}
    1.54 +
    1.55 +function tryDefineProperty(o, p, v)
    1.56 +{
    1.57 +  assertEq(Object.prototype.hasOwnProperty.call(o, p), false);
    1.58 +
    1.59 +  try
    1.60 +  {
    1.61 +    Object.defineProperty(o, p, { value: v });
    1.62 +    if (o[p] === v)
    1.63 +      return "set";
    1.64 +    if (p in o)
    1.65 +      return "set-converted";
    1.66 +    return "swallowed";
    1.67 +  }
    1.68 +  catch (e)
    1.69 +  {
    1.70 +    return "throw";
    1.71 +  }
    1.72 +}
    1.73 +
    1.74 +assertEq(typeof Object.preventExtensions, "function");
    1.75 +assertEq(Object.preventExtensions.length, 1);
    1.76 +
    1.77 +var slowArray = [1, 2, 3];
    1.78 +slowArray.slow = 5;
    1.79 +var objs =
    1.80 +  [{}, { 1: 2 }, { a: 3 }, [], [1], [, 1], slowArray, function a(){}, /a/];
    1.81 +
    1.82 +for (var i = 0, sz = objs.length; i < sz; i++)
    1.83 +{
    1.84 +  var o = objs[i];
    1.85 +  assertEq(Object.isExtensible(o), true, "object " + i + " not extensible?");
    1.86 +
    1.87 +  var o2 = Object.preventExtensions(o);
    1.88 +  assertEq(o, o2);
    1.89 +
    1.90 +  assertEq(Object.isExtensible(o), false, "object " + i + " is extensible?");
    1.91 +
    1.92 +  assertEq(trySetProperty(o, "baz", 17, true), "throw",
    1.93 +           "unexpected behavior for strict-mode property-addition to " +
    1.94 +           "object " + i);
    1.95 +  assertEq(trySetProperty(o, "baz", 17, false), "swallowed",
    1.96 +           "unexpected behavior for property-addition to object " + i);
    1.97 +
    1.98 +  assertEq(tryDefineProperty(o, "baz", 17), "throw",
    1.99 +           "unexpected behavior for new property definition on object " + i);
   1.100 +}
   1.101 +
   1.102 +/******************************************************************************/
   1.103 +
   1.104 +reportCompare(true, true);
   1.105 +
   1.106 +print("All tests passed!");