Thread: dunno how to test this code so i dont know if it works help please

Originally Posted by jonathanfox

...not sure how to test it...

Personally, I never (that's never) write a single line of code for a new project until I have a test plan. Really. Never.

Anyhow, how about starting with something simple:

import java.util.Set;
import java.util.HashSet;
 
public class z
{
    public static void main(String [] args)
    {
        Set<Integer> myNumbers = new HashSet<Integer>() {
            {
                add(1);
                add(2);
                add(3);
                add(4);
                add(5);
            }
        };
        Set<Integer> winningNumbers = new HashSet<Integer>() {
            {
                add(38);
                add(2);
                add(13);
                add(5);
                add(15);
            }
        };
 
        match  matchIt = new match();
 
 
        System.out.printf("Initially:\n   Winning Numbers: %s   My numbers: %s\n",
                winningNumbers, myNumbers);
 
        System.out.println();
 
        int winners = matchIt.match(myNumbers, winningNumbers);
        System.out.printf("After match():\n   Winning numbers: %s   My Numbers: %s\n",
                winningNumbers, myNumbers);
 
        System.out.println();
 
        System.out.printf("Winners = %d\n", winners);
 
    }
}

Output:

Initially:
Winning Numbers: [2, 38, 5, 13, 15] My numbers: [1, 2, 3, 4, 5]

After match():
Winning numbers: [2, 38, 5, 13, 15] My Numbers: [2, 5]

Winners = 2


Then, maybe, go back and make a loop that gets five integers from the user and uses a random number generator to ccme up with five integers within a certain range for the winners. Populate the sets with the corresponding values, check for winners and go back through the loop. Exit the loop when the user enters something other than a positive integer. Stuff like that.

Cheers!

Z