/// <summary>
/// Entry point into the program
/// </summary>
/// <param name="args">The command line arguments.</param>
static void Main(string[] args)
{
const int secondsInAMinute = 60;
const int millisecondsInASecond = 1000;
const int oneMinuteInMilliseconds = secondsInAMinute * millisecondsInASecond;
var primeNumber = new PrimeNumbers();
var timeTracker = new TimeTracker(oneMinuteInMilliseconds);
var highestNumberOfPrimesToGenerate = 1000000000;
timeTracker.Begin();
foreach (var prime in primeNumber.Generate(highestNumberOfPrimesToGenerate))
{
if (!timeTracker.IsTimeExpired())
{
OnPrimeNumberFound(prime, timeTracker);
}
else
{
break;
}
}
Console.WriteLine("Press enter to exit.");
Console.ReadLine();
}
public void ShouldReturnPrimesUnder30()
{
// Arrange
var primeNumbers = new PrimeNumbers();
var primesReturned = false;
var primesGenerated = new List<int>();
// Primes taken from https://oeis.org/A000040
var primesUnder30 = new List<int>
{
2,
3,
5,
7,
11,
13,
17,
19,
23,
29
};
// Act
foreach (var prime in primeNumbers.Generate(30))
{
Assert.IsTrue(primesUnder30.Contains(prime), $"Unexpected prime: {prime}");
primesGenerated.Add(prime);
primesReturned = true;
}
// Assert
Assert.IsTrue(primesReturned, "Expected the on prime action to be called.");
Assert.IsFalse(primesUnder30.Except(primesGenerated).Any(), "Expected all primes under 30 to be generated.");
}
private void TestNoPrimesFound(Func<PrimeNumbers, IEnumerable<int>> primeNumbersActionToTest)
{
// Arrange
var primeNumbers = new PrimeNumbers();
var primeFound = false;
// Act
foreach (var prime in primeNumbersActionToTest(primeNumbers))
{
primeFound = true;
break;
}
// Assert
Assert.IsFalse(primeFound, "Expected no primes to be found");
}