public async Task Can_Delete_Customer()
        {
            //Arrange
            var testCustomer = new Customer()
            {
                Name = "İlk Bölüm"
            };

            using (var context = new AppDbContext(_contextOptions))
            {
                //Act
                var repository = new EfCoreRepository <Customer>(context);
                await repository.InsertAsync(testCustomer);

                await repository.DeleteAsync(testCustomer);

                //Assert
                var deletedCustomer = await repository.GetByIdAsync(testCustomer.Id);

                Assert.Null(deletedCustomer);
            }
        }