public void GetFuelTypeByIdReturnsNotFoundWhenFuelTypeDoesNotExist()
        {
            FuelType fuelType = null;

            _fuelTypeRepositoryMock.Setup(m => m.GetById(It.IsAny <int>()))
            .Returns(fuelType);

            var result = _sut.GetEntityById(0) as NotFoundObjectResult;

            Assert.That(result, Is.Not.Null);
            _fuelTypeRepositoryMock.Verify(m => m.GetById(It.IsAny <int>()), Times.Once);
        }