public void InputTwoLettersReturnList() { var list = new LetterCombinationsOfPhoneNumber_17().LetterCombinations("23"); Assert.Equal(9, list.Count); Assert.True(list.ContainsSameElement(new List <string> { "ad", "ae", "af", "bd", "be", "bf", "cd", "ce", "cf" })); }
public void InputEmptyStringReturnEmptyList() { var list = new LetterCombinationsOfPhoneNumber_17().LetterCombinations(string.Empty); Assert.Equal(0, list.Count); }