public static void TestShapes()
{
string str = null;
Console.WriteLine("Hello World!");
Ellipse ellipse2 = new Ellipse(5.7, 34.5);
//TODO : Unhandled Exception: System.NullReferenceException: Object reference not set to an instance of an object.
//Console.WriteLine(ellipse2.ToString(null));
//Console.WriteLine(ellipse2.ToString(str));
Console.WriteLine(ellipse2.ToString("R"));
Console.WriteLine(ellipse2.ToString("G"));
Console.WriteLine("\n");
Rectangle rec = new Rectangle(5.7, 34.5);
Console.WriteLine(rec.ToString("R"));
Console.WriteLine(rec.ToString("G"));
Console.WriteLine("\n");
Cuboid cub = new Cuboid(29.6, 29.6, 29.6);
Console.WriteLine(cub.ToString("R"));
Console.WriteLine(cub.ToString("G"));
Console.WriteLine("\n");
Cylinder cyl = new Cylinder(29.6, 29.6, 29.6);
Console.WriteLine(cyl.ToString("R"));
Console.WriteLine(cyl.ToString("G"));
Console.WriteLine("\n");
Sphere sphere = new Sphere(29.6);
//Test bad value
//Console.WriteLine(sphere.ToString("BADVALUE"));
Console.WriteLine(sphere.ToString("R"));
Console.WriteLine(sphere.ToString("G"));
Console.WriteLine("\n");
}