public void CountPrimeNumbers_02_IncorrectlyCountPrimeNumbers() { //Arrange List <int> numbers = new List <int> { 1, 7, 28, 29, 4, 5 }; int expectedCountOfPrimes = 7; int actualCountOfPrimes = Collections.CountPrimeNumbers(numbers); //Assert & Act Assert.AreNotEqual(expectedCountOfPrimes, actualCountOfPrimes, "Not equal"); }