michael@0: /*
michael@0:  * Any copyright is dedicated to the Public Domain.
michael@0:  * http://creativecommons.org/licenses/publicdomain/
michael@0:  */
michael@0: 
michael@0: var gTestfile = 'proxy-__proto__.js';
michael@0: var BUGNUMBER = 770344;
michael@0: var summary = "Behavior of __proto__ on proxies";
michael@0: 
michael@0: print(BUGNUMBER + ": " + summary);
michael@0: 
michael@0: /**************
michael@0:  * BEGIN TEST *
michael@0:  **************/
michael@0: 
michael@0: var protoDesc = Object.getOwnPropertyDescriptor(Object.prototype, "__proto__");
michael@0: var protoGetter = protoDesc.get;
michael@0: var protoSetter = protoDesc.set;
michael@0: 
michael@0: function pp(arr)
michael@0: {
michael@0:   return arr.map(function(v) { return "" + v; }).join(", ");
michael@0: }
michael@0: 
michael@0: function testProxy(creator, args, proto)
michael@0: {
michael@0:   print("Now testing behavior for " +
michael@0:         "Proxy." + creator + "(" + pp(args) + ")");
michael@0: 
michael@0:   var pobj = Proxy[creator].apply(Proxy, args);
michael@0: 
michael@0:   // Check [[Prototype]] before attempted mutation
michael@0:   assertEq(Object.getPrototypeOf(pobj), proto);
michael@0:   assertEq(protoGetter.call(pobj), proto);
michael@0: 
michael@0:   // Attempt [[Prototype]] mutation
michael@0:   protoSetter.call(pobj, null);
michael@0: 
michael@0:   // Check [[Prototype]] after attempted mutation
michael@0:   assertEq(Object.getPrototypeOf(pobj), null);
michael@0:   assertEq(protoGetter.call(pobj), null);
michael@0: }
michael@0: 
michael@0: // Proxy object with non-null [[Prototype]]
michael@0: var nonNullProto = { toString: function() { return "non-null prototype"; } };
michael@0: var nonNullHandler = { toString: function() { return "non-null handler"; } };
michael@0: testProxy("create", [nonNullHandler, nonNullProto], nonNullProto);
michael@0: 
michael@0: // Proxy object with null [[Prototype]]
michael@0: var nullProto = null;
michael@0: var nullHandler = { toString: function() { return "null handler"; } };
michael@0: testProxy("create", [nullHandler, nullProto], nullProto);
michael@0: 
michael@0: // Proxy function with [[Call]]
michael@0: var callForCallOnly = function () { };
michael@0: callForCallOnly.toString = function() { return "callForCallOnly"; };
michael@0: var callOnlyHandler = { toString: function() { return "call-only handler"; } };
michael@0: testProxy("createFunction",
michael@0:           [callOnlyHandler, callForCallOnly], Function.prototype);
michael@0: 
michael@0: // Proxy function with [[Call]] and [[Construct]]
michael@0: var callForCallConstruct = function() { };
michael@0: callForCallConstruct.toString = function() { return "call/construct call"; };
michael@0: var constructForCallConstruct = function() { };
michael@0: constructForCallConstruct.toString =
michael@0:   function() { return "call/construct construct"; };
michael@0: var handlerForCallConstruct =
michael@0:   { toString: function() { return "call/construct handler"; } };
michael@0: testProxy("createFunction",
michael@0:           [handlerForCallConstruct,
michael@0:            callForCallConstruct,
michael@0:            constructForCallConstruct],
michael@0:           Function.prototype);
michael@0: 
michael@0: 
michael@0: /******************************************************************************/
michael@0: 
michael@0: if (typeof reportCompare === "function")
michael@0:   reportCompare(true, true);
michael@0: 
michael@0: print("Tests complete");