public void GivesBackNumberOfChangeOptionsWhenGivenPenniesAndQuarters()
        {
            var input  = new int[] { 1, 25 };
            var actual = 3;

            var expected = CoinCounter.GetTotalChangeOptions(input);

            actual.Should().Be(expected);
        }
        public void GivesBackNumberOfChangeOptionsWhenGivenAllSameCoins(int coinAmount)
        {
            var input  = new int[] { coinAmount };
            var actual = 1;

            var expected = CoinCounter.GetTotalChangeOptions(input);

            actual.Should().Be(expected);
        }