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()); }