public async Task GetByIdAsync()
        {
            // Arrange
            FavouriteRepositoryAsync repository = new FavouriteRepositoryAsync();

            // Act
            Favourite results = await repository.GetByIdAsync("*****@*****.**", "PRIMAVERA");

            // Assert
            Assert.IsNotNull(results);
        }
        public async Task ListAsync()
        {
            // Arrange
            FavouriteRepositoryAsync repository = new FavouriteRepositoryAsync();

            // Act
            IEnumerable <Favourite> results = await repository.ListAsync(new { UserName = "******" });

            // Assert
            Assert.IsNotNull(results);
            Assert.IsTrue(results.Any());
        }