public async void AddAsync_validParameters_ReturnsNull()
{
var repository = new Mock <IVehicleModelRepository>();
var classForTesting = new VehicleModelService(repository.Object);
var result = await classForTesting.AddAsync(Guid.NewGuid(), Guid.NewGuid(), "test", "test");
result.Should().Be(0);
}
public async void AddAsync_InvalidParameters_ReturnsMinus3()
{ //arrange
var repository = new Mock <IVehicleModelRepository>();
var classForTesting = new VehicleModelService(repository.Object);
//3. test
var result = await classForTesting.AddAsync(Guid.Empty, Guid.NewGuid(), "test", "test");
result.Should().Be(-3);
}