public void FixedTest()
 {
     Assert.AreEqual(KataAreaOrPerimeter.AreaOrPerimeter(4, 4), 16);
     Assert.AreEqual(KataAreaOrPerimeter.AreaOrPerimeter(6, 12), 36);
     Assert.AreEqual(KataAreaOrPerimeter.AreaOrPerimeter(5, 4), 18);
     Assert.AreEqual(KataAreaOrPerimeter.AreaOrPerimeter(72, 100), 344);
 }
 public void RandomTest()
 {
     for (int i = 0; i < 100; i++)
     {
         Random rnd = new Random();
         int    A   = rnd.Next(i, 130);
         int    B   = rnd.Next(i, 130);
         Assert.AreEqual(KataAreaOrPerimeter.AreaOrPerimeter(A, B), A == B ? A * B : 2 * (A + B));
     }
 }