public void ReadWriteMoviesTest()
        {
            _jsonFileManager.WriteMovies(JsonFileManagerHelper.Movies, directory, file, extension);
            Assert.IsTrue(_jsonFileManager.MovieFileExists(directory, file, extension));

            List <MovieEntity> movies = _jsonFileManager.ReadMovies(directory, file, extension).Cast <MovieEntity>().ToList();

            Assert.IsTrue(movies.Any());
        }