public void ManageCarModel_CarObj_IsNull()
        {
            //Arrange
            var sut = new CarModelRepository(_mockContext.Object);

            //Act
            var returnedValue = sut.ManageCarModel(null);

            //Assert
            Assert.Equal(0, returnedValue);
        }
        public void ManageCarModel_CarObj_IsNotNull_Edit_ShouldCallCorrectMethods()
        {
            //Arrange
            var sut = new CarModelRepository(_mockContext.Object);

            //Act
            _ = sut.ManageCarModel(new CarModel()
            {
                ModelName = "m2"
            });

            //Assert
            _mockContext.Verify(x => x.CarModels.Add(It.IsAny <CarModel>()), Times.Never);
            _mockContext.Verify(x => x.SaveChanges(), Times.Once);
        }