public void OneDigitCombinationTests()
{
// arrange
string digits = "2";
var expectedWords = new List <string> {
"a", "b", "c"
};
// act
IList <string> generatedWordsList = PhoneNumberCombinations.LetterCombinations(digits);
// assert
CollectionAssert.AreEquivalent(expectedWords, new List <string>(generatedWordsList));
}
public void TwoDigitCombinationTests()
{
// arrange
string digits = "23";
var expectedWords = new List <string> {
"ad", "ae", "af", "bd", "be", "bf", "cd", "ce", "cf"
};
// act
IList <string> generatedWordsList = PhoneNumberCombinations.LetterCombinations(digits);
// assert
CollectionAssert.AreEquivalent(expectedWords, new List <string>(generatedWordsList));
}
