private async Task CreateDb()
        {
            var database = _documentClient.CreateDatabaseQuery()
                           .Where(d => d.Id == _databaseId)
                           .AsEnumerable()
                           .FirstOrDefault();

            Assert.NotNull(
                await _databaseProvider.CreateOrGetDb());

            Assert.NotNull(
                this._documentClient.CreateDatabaseQuery()
                .Where(d => d.Id == _databaseId)
                .AsEnumerable()
                .FirstOrDefault());
        }