public void ShouldReturnOriginalStringIfGivenInputDoesNotContainWildCards()
        {
            const string input = "1111";

            Assert.Equal(new[] { input }, StringAndWildCards.Possibilities(input));
        }
 public void ShouldReturnAllPossibleOutComesGivenAString(string input, params string[] expected)
 {
     Assert.Equal(expected, StringAndWildCards.Possibilities(input).ToArray());
 }