public void ListPrimeNumbers_ShouldThrowArgumentException_IfInputIsZero()
{
//arrange
var sut = new PrimeNumberServiceAlgorithm1();
//act
//assert
Assert.Throws(typeof(ArgumentException), () => sut.ListPrimeNumbers(0));
}
public void ListPrimeNumbers_WithNNumberAsInput_ShouldReturnFirstNPrimes(int n)
{
//arrange
var sut = new PrimeNumberServiceAlgorithm1();
//act
var primes = sut.ListPrimeNumbers(n);
//assert
Assert.AreEqual(n, primes.Count);
}
public void ListPrimeNumbers_With1AsInput_ShouldReturn2AsPrimeNumber()
{
//arrange
var sut = new PrimeNumberServiceAlgorithm1();
//act
var primes = sut.ListPrimeNumbers(1);
//assert
Assert.AreEqual(1, primes.Count);
Assert.AreEqual(2, primes[0]);
}
public void ListPrimeNumbers_With5AsInput_ShouldReturnFirst5PrimeNumbers()
{
//arrange
var sut = new PrimeNumberServiceAlgorithm1();
var expectedPrimes = new int[] { 2, 3, 5, 7, 11 };
//act
var primes = sut.ListPrimeNumbers(5);
//assert
Assert.AreEqual(5, primes.Count);
Assert.That(expectedPrimes, Is.EquivalentTo(primes));
}
static void Main(string[] args)
{
Console.WriteLine("Please enter number : ");
try
{
int input = GetNumber();
var primeNumberService = new PrimeNumberServiceAlgorithm1();
var primes = primeNumberService.ListPrimeNumbers(input);
var printString = "\t";
for (int i = 0; i <= primes.Count; i++)
{
if (i > 0)
{
printString = $"{primes[i - 1]} \t";
}
for (int j = 0; j < primes.Count; j++)
{
if (i == 0)
{
printString += $"{primes[j]} \t";
}
else
{
printString += $"{string.Concat(primes[i - 1] * primes[j])} \t";
}
}
Console.WriteLine(printString);
printString = string.Empty;
}
}
catch (ArgumentException e)
{
Console.WriteLine(e.Message);
}
catch (Exception e)
{
Console.WriteLine("Unexpected error!");
}
Console.Read();
}