public async Task AddImageToPostShouldWork()
        {
            var options = new DbContextOptionsBuilder <ApplicationDbContext>()
                          .UseInMemoryDatabase(databaseName: "AddImageToPostShouldWork").Options;
            var dbContext = new ApplicationDbContext(options);

            var postsRepo    = new EfDeletableEntityRepository <Post>(dbContext);
            var makesRepo    = new EfDeletableEntityRepository <Make>(dbContext);
            var makesService = new MakesService(makesRepo);
            var postsService = new PostsService(postsRepo, makesService);

            var post = new Post()
            {
                Id               = 1,
                Name             = "random name",
                Price            = 53222,
                Currency         = Currency.LV,
                Mileage          = 25123,
                Color            = new Color(),
                EngineType       = EngineType.Disel,
                Horsepower       = 255,
                TransmissionType = TransmissionType.Automatic,
                ManufactureDate  = DateTime.Now,
                Category         = new Category(),
                City             = new City(),
                User             = new ApplicationUser(),
                PhoneNumber      = "0897456321",
                Description      = "random descr",
                Eurostandard     = Eurostandard.Five,
                Condition        = Condition.New,
                VehicleCategory  = new VehicleCategory(),
            };

            var image = new Image()
            {
                Url = "random",
            };

            await dbContext.Images.AddAsync(image);

            await dbContext.Posts.AddAsync(post);

            await dbContext.SaveChangesAsync();

            var postImage = new PostImage()
            {
                Image   = image,
                ImageId = image.Id,
                Post    = post,
                PostId  = post.Id,
            };

            await postsService.AddImageToPost(1, postImage);

            Assert.Single(post.Images);
        }