public void BadScaleTest()
{
List <Point> points = new List <Point>();
var rectangle = new Rectangle(
new Point(20, 20),
new Point(30, 20),
new Point(30, 30),
new Point(20, 30));
Assert.That(() => rectangle.Scale(-20), Throws.TypeOf <ShapeException>()
.With.Message.EqualTo("Invalid scale factor"));
}
public void ScaleTest()
{
List <Point> points = new List <Point>();
var rectangle = new Rectangle(
new Point(20, 20),
new Point(30, 20),
new Point(30, 30),
new Point(20, 30));
points.Add(new Point(20, 20));
points.Add(new Point(30, 20));
points.Add(new Point(30, 30));
points.Add(new Point(20, 30));
rectangle.Scale(10);
for (int i = 0; i < rectangle.Points.Count; i++)
{
points[i].X *= 10;
points[i].Y *= 10;
Assert.AreEqual(points[i].X, rectangle.Points[i].X);
Assert.AreEqual(points[i].Y, rectangle.Points[i].Y);
}
}