public static IEnumerable <Operation> GetOperations()
            {
                var repository = new OperationReadRepository(new DataContext(new PersistenceConfiguration(RepositoryTestsHelper.ConnectionString)));
                var result     = repository.ListAsync(null, null, null).Result;

                return(result);
            }
            public static Operation CreateOperation(Guid id, string name)
            {
                // prepare
                var writeRepository = new OperationWriteRepository(new DataContext(new PersistenceConfiguration(RepositoryTestsHelper.ConnectionString)));
                var readRepository  = new OperationReadRepository(new DataContext(new PersistenceConfiguration(RepositoryTestsHelper.ConnectionString)));

                // create
                var operation = new Operation(id, name);

                writeRepository.CreateAsync(operation).GetAwaiter().GetResult();

                // result
                var result = readRepository.GetAsync(id).Result;

                return(result);
            }