public void TestGetSafetyByContainsOnlyLetters() { Assert.AreEqual(-1, passwordStrength.GetSafetyByContainsOnlyLetters("a")); Assert.AreEqual(-2, passwordStrength.GetSafetyByContainsOnlyLetters("aA")); Assert.AreEqual(0, passwordStrength.GetSafetyByContainsOnlyLetters("aA1")); }