public void GetVehiclesByFilterTest() { // arrange Vehicle vehicle1 = new Vehicle() { Make = "Honda", Model = "CRV", Year = 2015 }; Vehicle vehicle2 = new Vehicle() { Make = "Honda", Model = "CRV", Year = 2015 }; // act VehiclesRepository vr = new VehiclesRepository(); vr.AddVehicle(vehicle1); vr.AddVehicle(vehicle2); // assert Assert.IsTrue(vr.GetVehicleByFilter("Model", "CR").Count() == 2); }