public void SetGetChunksOfThreeNumbers_SetsAndGetsChunksOfThreeNumbers_List()
        {
            NumbersToWords newObject = new NumbersToWords();
            List <char>    numbers   = new List <char>()
            {
                '1', '2', '3'
            };
            List <List <char> > listOfNumbers = new List <List <char> >()
            {
                numbers
            };

            newObject.AddChunksOfNumbers(numbers);
            CollectionAssert.AreEqual(listOfNumbers, newObject.GetChunksOfThreeNumbers());
        }