function test() { | |
var desc = Object.getOwnPropertyDescriptor(Object.prototype,"__proto__"); | |
var A = function(){}; | |
return (desc | |
&& "get" in desc | |
&& "set" in desc | |
&& desc.configurable | |
&& !desc.enumerable); | |
} | |
if (!test()) | |
throw new Error("Test failed"); | |