//This is the code what happens when "Check if it's prime" button gets clicked
protected void Button1_Click(object sender, EventArgs e)
{
/*Parsing is usually a risky operation,
* even if we have a nice ASP.NET in-build form validations for the input to only be a number,
* it's still better to catch an exception.
* Of course exceptions should be handled more precisely, but for demonstration
* will catch a generic Exception.
*/
try
{
double num = double.Parse(number.Text);
bool isPrime = new PrimesAlgorithm().Primes(num);
//If the number is prime, get the joke from a jokes api I found on the web
if (isPrime)
{
var joke = new JokesRequest().GetTheJoke();
result.Text = "You entered " + num + ". This is a prime number! Here's a joke for you:";
jokeResult.Text = joke;
giflabel.Text = "";
}
//if the number is not prime, show "no joke" text and a gif.
else
{
result.Text = "You entered " + num + ". This is not a prime number. Try another one! ";
jokeResult.Text = "No joke this time. :(";
giflabel.Text = "<img src = '/Recources/giphy.gif'>";
}
} catch (Exception)
{
//Do something to recover
}
}
//Tests a big number, negative values, special cases 0 and 1, and every number who has a factor from 2 - 10.
public void PassingNotPrimeNumbersAlgorithmReturnsFalse([Values(9999999999999999944, -1, 0, 1, 4, 9, 15, 16, 49, 64, 81, 100)] double num)
{
var sut = new PrimesAlgorithm();
sut.Primes(num).Should().BeFalse();
}
//Tests if the algorithm works correctly taking the first prime 2, and a random large prime, and some random prime in the middle
public void PassingPrimeNumbersAlgorithmReturnsTrue([Values(982451653, 2, 167)] double num)
{
var sut = new PrimesAlgorithm();
sut.Primes(num).Should().BeTrue();
}
