public void TwentyFor4X5ShapeFromRectangle()
{
Shape myShape = new Rectangle() { Height = 4, Width = 5 };
Assert.AreEqual(20, myShape.Area());
}
public void SixFor2X3Rectangle()
{
var myRectangle = new Rectangle { Height = 2, Width = 3 };
Assert.AreEqual(6, myRectangle.Area());
}