public void AddOneAsync()
        {
            Task.Run(async() => {
                CategoryDocument category = new CategoryDocument()
                {
                    Id   = Guid.NewGuid().ToString(),
                    Name = "Machine Learning"
                };
                await _categoryRepository.AddOneAsync(category);
                CategoryDocument dbCategory = await _categoryRepository.GetByIdAsync(category.Id);

                Assert.NotNull(dbCategory);
                Assert.Equal(category.Id, dbCategory.Id);
                Assert.Equal(category.Name, dbCategory.Name);
            }).GetAwaiter().GetResult();
        }