/// <summary>
        /// Functie care insereaza un film in baza de date si verifica daca inserarea a avut loc cu succes.
        /// </summary>
        /// <param name="movie"></param>
        private static void InsertMovieAndCheckIfMovieExists(Movie movie)


        {
            // Deschid conexiunea in using. Conexiunea se inchide automat cand se termina blocul using.
            using (NpgsqlConnection npgsqlConnection = DatabaseHelpers.GetConn())
            {
                // Inserez un film in baza de date
                InsertMovie(movie, npgsqlConnection);
                NpgsqlCommand npgsqlSelectCommand = SelectMovieCommand(movie, npgsqlConnection);

                // Deschid un sql reader si execut comanda de selectare a filmului
                using (NpgsqlDataReader npgsqlDataReader = npgsqlSelectCommand.ExecuteReader())
                {
                    // Daca un film in sql reader, exists = true, altfel exists = false.
                    bool exists = npgsqlDataReader.Read();

                    // Daca filmul nu a fost selectat inseamna ca nu exista in baza de date
                    if (!exists)
                    {
                        Assert.Fail();
                    }
                }
            }
        }
        public void GetMovieByIdTest()
        {
            // Arrange - creez un film...
            Movie movie = new Movie
            {
                MovieId     = Guid.NewGuid().ToString(),
                Title       = "movie-name-getbyid-test",
                Description = "Movie-description-getbyid-test"
            };

            //....si o inserez in baza de date.
            using (NpgsqlConnection npgsqlConnection = DatabaseHelpers.GetConn())
                InsertMovie(movie, npgsqlConnection);

            // Act - execut functia din repository pe care vreau sa o testez: GetById.
            IMoviesRepository moviesRepository = new MoviesRepository(DatabaseHelpers.GetContext());
            IResult <Movie>   result           = moviesRepository.GetById(movie.MovieId);

            // Assert - in functie de rezultat imi dau seama daca testul a trecut sau a picat

            switch (result)
            {
            case OK <Movie> ok:
                Assert.AreEqual(movie.MovieId, ok.Result.MovieId);
                Assert.AreEqual(movie.Title, ok.Result.Title);
                Assert.AreEqual(movie.Description, ok.Result.Description);
                break;

            case Error <Movie> error:
                Console.WriteLine(error.Message);
                break;

            default:
                throw new NotImplementedException();
            }
        }