public void EmptyArguments(string word1, string word2)
{
IAnagramChecker anagramChecker = new AnagramChecker();
Assert.Throws <ArgumentException>(() => anagramChecker.IsAnagram(word1, word2));
}
public void IsNotAnagram(string word1, string word2)
{
IAnagramChecker anagramChecker = new AnagramChecker();
Assert.IsFalse(anagramChecker.IsAnagram(word1, word2));
}