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/extensions/proxy-__proto__.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,81 @@
     1.4 +/*
     1.5 + * Any copyright is dedicated to the Public Domain.
     1.6 + * http://creativecommons.org/licenses/publicdomain/
     1.7 + */
     1.8 +
     1.9 +var gTestfile = 'proxy-__proto__.js';
    1.10 +var BUGNUMBER = 770344;
    1.11 +var summary = "Behavior of __proto__ on proxies";
    1.12 +
    1.13 +print(BUGNUMBER + ": " + summary);
    1.14 +
    1.15 +/**************
    1.16 + * BEGIN TEST *
    1.17 + **************/
    1.18 +
    1.19 +var protoDesc = Object.getOwnPropertyDescriptor(Object.prototype, "__proto__");
    1.20 +var protoGetter = protoDesc.get;
    1.21 +var protoSetter = protoDesc.set;
    1.22 +
    1.23 +function pp(arr)
    1.24 +{
    1.25 +  return arr.map(function(v) { return "" + v; }).join(", ");
    1.26 +}
    1.27 +
    1.28 +function testProxy(creator, args, proto)
    1.29 +{
    1.30 +  print("Now testing behavior for " +
    1.31 +        "Proxy." + creator + "(" + pp(args) + ")");
    1.32 +
    1.33 +  var pobj = Proxy[creator].apply(Proxy, args);
    1.34 +
    1.35 +  // Check [[Prototype]] before attempted mutation
    1.36 +  assertEq(Object.getPrototypeOf(pobj), proto);
    1.37 +  assertEq(protoGetter.call(pobj), proto);
    1.38 +
    1.39 +  // Attempt [[Prototype]] mutation
    1.40 +  protoSetter.call(pobj, null);
    1.41 +
    1.42 +  // Check [[Prototype]] after attempted mutation
    1.43 +  assertEq(Object.getPrototypeOf(pobj), null);
    1.44 +  assertEq(protoGetter.call(pobj), null);
    1.45 +}
    1.46 +
    1.47 +// Proxy object with non-null [[Prototype]]
    1.48 +var nonNullProto = { toString: function() { return "non-null prototype"; } };
    1.49 +var nonNullHandler = { toString: function() { return "non-null handler"; } };
    1.50 +testProxy("create", [nonNullHandler, nonNullProto], nonNullProto);
    1.51 +
    1.52 +// Proxy object with null [[Prototype]]
    1.53 +var nullProto = null;
    1.54 +var nullHandler = { toString: function() { return "null handler"; } };
    1.55 +testProxy("create", [nullHandler, nullProto], nullProto);
    1.56 +
    1.57 +// Proxy function with [[Call]]
    1.58 +var callForCallOnly = function () { };
    1.59 +callForCallOnly.toString = function() { return "callForCallOnly"; };
    1.60 +var callOnlyHandler = { toString: function() { return "call-only handler"; } };
    1.61 +testProxy("createFunction",
    1.62 +          [callOnlyHandler, callForCallOnly], Function.prototype);
    1.63 +
    1.64 +// Proxy function with [[Call]] and [[Construct]]
    1.65 +var callForCallConstruct = function() { };
    1.66 +callForCallConstruct.toString = function() { return "call/construct call"; };
    1.67 +var constructForCallConstruct = function() { };
    1.68 +constructForCallConstruct.toString =
    1.69 +  function() { return "call/construct construct"; };
    1.70 +var handlerForCallConstruct =
    1.71 +  { toString: function() { return "call/construct handler"; } };
    1.72 +testProxy("createFunction",
    1.73 +          [handlerForCallConstruct,
    1.74 +           callForCallConstruct,
    1.75 +           constructForCallConstruct],
    1.76 +          Function.prototype);
    1.77 +
    1.78 +
    1.79 +/******************************************************************************/
    1.80 +
    1.81 +if (typeof reportCompare === "function")
    1.82 +  reportCompare(true, true);
    1.83 +
    1.84 +print("Tests complete");