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//tests for maximum JSON depth

function createJSONobj(depth, obj){
	if(depth === 0){
		return;
	}
	obj.foo = {};
	createJSONobj(depth-1, obj.foo);
}

//counts depth of JSON object

function getDepth(obj, key){
	var total = 0;
	while(key in obj){
		total++;
		obj = obj[key];
	}
	return total;
}
//test for 1000 depth
/*   var a = {};
   a
=> {}
   createJSONobj(1000, a)
   getDepth(a)
=> 0
   getDepth(a, "foo")
=> 1000*/

//max depth appears to be 3961
/*    var a = {};
   a
=> {}
   createJSONobj(100000, a)
RangeError: Maximum call stack size exceeded
   a
=> { foo: { foo: { foo: [Object] } } }
   getDepth(a, "foo")
=> 3961*/

//json stringify for 400
/*   var a = {};
   createJSONobj(400, a)
   JSON.stringify(a)
=> '{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{"foo":{}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}}'*/

//works up to 900 depth