public void AddingBoxesGeneratesIds() { var box = new Box() { Description = "Small", OuterWidth = 21, OuterLength = 21, OuterDepth = 3, EmptyWeight = 1, InnerWidth = 20, InnerLength = 20, InnerDepth = 2, MaxWeight = 100 }; var box2 = new Box() { Description = "Large", OuterWidth = 201, OuterLength = 201, OuterDepth = 21, EmptyWeight = 1, InnerWidth = 200, InnerLength = 200, InnerDepth = 20, MaxWeight = 1000 }; var box3 = new Box() { Description = "Medium", OuterWidth = 101, OuterLength = 101, OuterDepth = 11, EmptyWeight = 5, InnerWidth = 100, InnerLength = 100, InnerDepth = 10, MaxWeight = 500 }; var boxes = new BoxList(); boxes.Insert(box); boxes.Insert(box2); boxes.Insert(box3); var packer = new Packer(); packer.AddBoxes(boxes); var packerBoxes = packer.GetBoxes().GetContent().Cast <Box>(); foreach (var packerBox in packerBoxes) { Assert.IsNotEmpty(packerBox.GeneratedId); } }