public void Add_ShouldAddTargetedInstanceInCollection()
{
AbstractShape expectedShape = new Square("SqareName", 44);
ShapeCollection actualShapeCollection = new ShapeCollection();
actualShapeCollection.Add(expectedShape);
Assert.AreEqual(1, actualShapeCollection.Count);
Assert.AreEqual(expectedShape.Name, actualShapeCollection.Single <AbstractShape>().Name);
Assert.AreEqual(expectedShape.Surface, actualShapeCollection.Single <AbstractShape>().Surface);
}