CipherTest.java

// Test class for Cipher
public class CipherTest {

    public static void main(String[] args)   
     {
        Cipher cipher = new Cipher();

        // text1 is used for testing, encrypting followed by decrypting should return the original text
        String text1 = "this should be encrypted now!";
        
        String text1_encrypted = cipher.encrypt(text1);
        String text1_decrypted = cipher.decrypt(text1_encrypted);

        System.out.println("Original Text: " + text1);
        System.out.println("Encrypted Text: " + text1_encrypted);
        System.out.println("Decrypted Text: " + text1_decrypted);
        System.out.println();

        if (!text1.equals(text1_decrypted)) {
         System.out.println("Hata: Decryption işlemi başarısız!");
     }

        // text2 is the message to be decrypted, something meaningful should print if Cipher is working correctly
        String text2 = "iu, git pldp hehocplvgk vj tiouvgk, plvj jliqay sduh jhgjh. ldeh d kiiy phos!";
        System.out.println(cipher.decrypt(text2));
     }   
    
}