public void FindIdTest()
        {
            Vehicles1.Add(Vehicle1);


            Assert.AreEqual(18, Vehicles1.FindId());
        }
 public void DeleteTest()
 {
     Vehicles1.Add(Vehicle1);
     Vehicles1.Delete(Vehicle1);
     Assert.AreEqual(0, Vehicles1.List.Count);
 }
        public void AddTest()
        {
            Vehicles1.Add("BMW", "X5", 2006, "1BGZ784", 93, 50);

            Assert.AreEqual(1, Vehicles1.List.Count);
        }