public void CreateLocomotiveTest(string name, decimal weightInTons, decimal horsePower)
{
testLocomotive = new Locomotive(name, weightInTons, horsePower);
Assert.IsNotNull(testLocomotive);
Assert.IsTrue(testLocomotive.GetType() == typeof(Locomotive));
Assert.Greater(testLocomotive.weightInTons, 0);
Assert.Greater(testLocomotive.HorsePower, 0);
}