public void CalcFTperKMTest()//passed
{
d.AddCar("CalcTest", 1250, "gas");
d.AddCarData("CalcTest", new CarData("CalcTest", 250000, 500, 50, "asd", 34000));
d.AddCarData("CalcTest", new CarData("CalcTest", 250500, 500, 50, "asd", 34000));
double sum = (34000 + 34000) / (500 + 500);
double c = d.CalcFTperKM("CalcTest");
Assert.AreEqual(sum, c);
}