package Crypter;


import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNull;


public class CrypterTest { 

 
    @Test
    void testEncrypt() {
        Crypter c = new CrypterImpl();
        assertEquals("4bcd3fghijk1mn0pqrs7uvwxyzl2ea56t89o",
                c.encrypt("abcdefghijklmnopqrstuvwxyz1234567890"));

        assertEquals("pr2 im s0s3 2o23 is7 3in3 sup3r v0r13sung",
                c.encrypt("pr2 im sose 202e ist eine super vorlesung"));

        assertEquals("4bcd3fghijk1mn0pqrs7uvwxyzl2ea56t89o",
                c.encrypt("ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"));

        assertEquals("", c.encrypt(""));
    }

    @Test
    void testEncryptIllegal() {
        Crypter c = new CrypterImpl();

        assertEquals("4bcd3fghijk1mn0pqrs7uvwxyzl2ea56t89o",
                c.encrypt("ABCDEFGHIJKLMNOPQRSTU!()/VWXYZ1234567890"));

        assertEquals("4bcd3fghijk1mn0pqrs7uvwxyzl2ea56t89o",
                c.encrypt("!A!B(CDEFG)hIJKLMNOPQRSTUVWXYZ1234567890"));
    }

    @Test
    void testDecrypt() {
        Crypter c = new CrypterImpl();
        assertEquals("abcdefghijklmnopqrstuvwxyz1234567890",
                c.decrypt("4bcd3fghijk1mn0pqrs7uvwxyzl2ea56t89o"));

        assertEquals("pr2 im sose 2023 ist eine super vorlesung",
                c.encrypt("pr2 im s0s3 2o2e is7 3in3 sup3r v0r13sung"));

        assertEquals("", c.decrypt(""));
    }

    @Test
    void testException1() {
        Crypter c = new CrypterImpl();
        assertNull(c.decrypt("ÖÄÜ"));
    }

    @Test
    void testException2() {
        Crypter c = new CrypterImpl();
        assertNull(c.decrypt("&/"));
    }

    @Test
    void testException3() {
        Crypter c = new CrypterImpl();
        assertNull(c.decrypt("abcdefghijklmnopqrstuvwXzy"));
    }
}