public void FromNSNumber()
{
double number = 1.999;
IntPtr handle = ObjC.ToNSNumber(number);
var actual = ObjC.FromNSNumber(handle);
Assert.AreEqual(Math.Round(number, 3), Math.Round(actual, 3));
}
public void FromNSNumberNull()
{
double number = ObjC.FromNSNumber(IntPtr.Zero);
Assert.AreEqual(default(double), number);
}