public void CalculatesDistance() { var stop1 = new Stop("Krakow", 19.96f, 50.06f); var stop2 = new Stop("Warsaw", 21.02f, 52.26f); double distance = stop1.DistanceTo(stop2); const double expectedDistance = 255732; Assert.True(Math.Abs(distance - expectedDistance) <= 2000.0); }