public void TestCircleArea()
{
double r = 0.123;
double s = new ShapeAreaCalculator().GetArea(new ShapeFactory().CreateCircle(r));
Assert.AreEqual(s, Math.PI * Math.Pow(r, 2));
}
public void TestTriangleArea()
{
double a = 10;
double b = 11;
double c = 19;
double s = new ShapeAreaCalculator().GetArea(new ShapeFactory().CreateTriangle(a, b, c));
double p = (a + b + c) / 2;
Assert.AreEqual(s, Math.Sqrt(p * (p - a) * (p - b) * (p - c)));
}
static void Main(string[] args)
{
IShapeAreaCalculator areaCalculator = new ShapeAreaCalculator();
var shapes = new List <Shape>
{
new Triangle(4, 3), // area = 6
new Circle(2), // area = pi
new Rectangle(3, 2) // area = 6
};
areaCalculator.Calculate(shapes); // 22.5663706
Console.WriteLine(shapes[1].Name); // Circle
}
