diff options
Diffstat (limited to 'js/src/tests/ecma_6/Proxy/proxy-__proto__.js')
-rw-r--r-- | js/src/tests/ecma_6/Proxy/proxy-__proto__.js | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/js/src/tests/ecma_6/Proxy/proxy-__proto__.js b/js/src/tests/ecma_6/Proxy/proxy-__proto__.js new file mode 100644 index 000000000..f68bea489 --- /dev/null +++ b/js/src/tests/ecma_6/Proxy/proxy-__proto__.js @@ -0,0 +1,59 @@ +/* + * Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/licenses/publicdomain/ + */ + +var gTestfile = 'proxy-__proto__.js'; +var BUGNUMBER = 950407; +var summary = "Behavior of __proto__ on ES6 proxies"; + +print(BUGNUMBER + ": " + summary); + +/************** + * BEGIN TEST * + **************/ + +var protoDesc = Object.getOwnPropertyDescriptor(Object.prototype, "__proto__"); +var protoGetter = protoDesc.get; +var protoSetter = protoDesc.set; + +function testProxy(target, initialProto) +{ + print("Now testing behavior for new Proxy(" + ("" + target) + ", {})"); + + var pobj = new Proxy(target, {}); + + // Check [[Prototype]] before attempted mutation + assertEq(Object.getPrototypeOf(pobj), initialProto); + assertEq(protoGetter.call(pobj), initialProto); + + // Attempt [[Prototype]] mutation + protoSetter.call(pobj, null); + + // Check [[Prototype]] after attempted mutation + assertEq(Object.getPrototypeOf(pobj), null); + assertEq(protoGetter.call(pobj), null); + assertEq(Object.getPrototypeOf(target), null); +} + +// Proxy object with non-null [[Prototype]] +var nonNullProto = { toString: function() { return "non-null prototype"; } }; +var target = Object.create(nonNullProto); +testProxy(target, nonNullProto); + +// Proxy object with null [[Prototype]] +target = Object.create(null); +target.toString = function() { return "null prototype" }; +testProxy(target, null); + +// Proxy function with [[Call]] +var callForCallOnly = function () { }; +callForCallOnly.toString = function() { return "callable target"; }; +testProxy(callForCallOnly, Function.prototype); + +/******************************************************************************/ + +if (typeof reportCompare === "function") + reportCompare(true, true); + +print("Tests complete"); |