static void Main(string[] args)
{
try
{
// retrieve the limits.
int lowerLimit = 1;
int upperLimit = 20;
RetrieveUpperAndLowerLimit(out lowerLimit, out upperLimit);
//Instiate the class.
PrimeNumberUtil prime = new PrimeNumberUtil();
//Get List of Prime numbers
string primes = prime.GetListOfPrimeNumbers(lowerLimit, upperLimit);
//Wriite out to console
Console.WriteLine("The prime numbers are:");
Console.WriteLine(primes);
//Read to line.
Console.ReadLine();
}
catch (Exception ex)
{
Console.WriteLine(String.Format("There was an exception while attemption to find the prime numbers.", ex));
}
}
public void ListofPrimeNumbersTest_ArgumentException()
{
//Initiate class.
PrimeNumberUtil prime = new PrimeNumberUtil();
//Throws argument exception when given bad order of limits.
Assert.ThrowsException <ArgumentException>(() => prime.GetListOfPrimeNumbers(20, 0));
}
public void ListofPrimeNumbersTest_IsEmpty()
{
//Initiate class.
PrimeNumberUtil prime = new PrimeNumberUtil();
//Get the string.
string primeNumbers = prime.GetListOfPrimeNumbers(1, 1);
//Make sure it is not null.
Assert.IsTrue(string.IsNullOrEmpty(primeNumbers));
}
public void ListofPrimeNumbersTest_ReturnList()
{
//Initiate class.
PrimeNumberUtil prime = new PrimeNumberUtil();
//Get the string.
string primeNumbers = prime.GetListOfPrimeNumbers(1, 20);
//Make sure it is not null.
Assert.IsNotNull(primeNumbers);
}