[SKIT] Visa Applications

package Lab1;

import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;

import java.util.ArrayList;
import java.util.List;

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

public class VisaTest {

    private List<String> ukVisaAplications;
    private List<String> usaVisaAplications;

    public static List<String> applicationsForUkVisaOnly(List<String> ukVisa, List<String> usaVisa) throws Throwable {
        if(ukVisa==null || usaVisa==null) {
            System.out.println("Actual: NullPointerException");
            throw new NullPointerException();
        }
        int count=0;
        List<String> ukVisaOnly = new ArrayList<String>();
        for(int i=0;i<ukVisa.toArray().length;i++){
            if(!usaVisa.contains(ukVisa.get(i))){
                ukVisaOnly.add(ukVisa.get(i));
                count++;
            }
        }
        if(count==0){
            return null;
        }
        else{
            return ukVisaOnly;
        }
    }
    @BeforeEach
    public void init(){
        ukVisaAplications = new ArrayList<String>();
        usaVisaAplications = new ArrayList<String>();
//        System.out.println("NOV TEST");
    }

    /*
    Test 1: T T T T C5.2
    Both lists are non-null and non-empty and the return list is also non-empty
     */

    @Test
    public void Test1() throws Throwable {

        System.out.println("**********");
        System.out.println("TEST 1");
        System.out.println("**********");

        ukVisaAplications.add("Dzoce Srce");
        ukVisaAplications.add("Slave Temkov");
        ukVisaAplications.add("Ana Todorovska");
        ukVisaAplications.add("Hristina Mihajloska");

        usaVisaAplications.add("Ana Todorovska");
        usaVisaAplications.add("Slave Temkov");
        usaVisaAplications.add("Vlatco Spasev");
        usaVisaAplications.add("Stefan Andonov");

    List<String> expectedResult = new ArrayList<>();
    expectedResult.add("Dzoce Srce");
    expectedResult.add("Hristina Mihajloska");

    System.out.println("Expected: " + expectedResult.toString());
    System.out.println("Actual: " + applicationsForUkVisaOnly(ukVisaAplications,usaVisaAplications).toString());
    assertEquals(expectedResult,applicationsForUkVisaOnly(ukVisaAplications,usaVisaAplications));
    }

    /*
    Test 2: F T F T C5.2
    First list is null and empty, thus we should be thrown NullPointerException at.
     */

    @Test
    public void Test2() throws Throwable {

        System.out.println("**********");
        System.out.println("TEST 2");
        System.out.println("**********");

        ukVisaAplications = null;

        usaVisaAplications.add("Ana Todorovska");
        usaVisaAplications.add("Slave Temkov");
        usaVisaAplications.add("Vlatco Spasev");
        usaVisaAplications.add("Stefan Andonov");

        System.out.println("Expected: NullPointerException");
        assertThrows(NullPointerException.class, () -> applicationsForUkVisaOnly(ukVisaAplications,usaVisaAplications));

    }

    /*
    Test 3: T F T F C5.2
    Second list is null and empty, thus we should be thrown NullPointerException at.
     */

    @Test
    public void Test3() throws Throwable {

        System.out.println("**********");
        System.out.println("TEST 3");
        System.out.println("**********");

        usaVisaAplications.add("Ana Todorovska");
        usaVisaAplications.add("Slave Temkov");
        usaVisaAplications.add("Vlatco Spasev");
        usaVisaAplications.add("Stefan Andonov");

        usaVisaAplications = null;

        System.out.println("Expected: NullPointerException");
        assertThrows(NullPointerException.class, () -> applicationsForUkVisaOnly(ukVisaAplications,usaVisaAplications));

    }

    /*
    Test 4: T T F T C5.1
    First list is empty and as a result we are expecting null.
     */

    @Test
    public void Test4() throws Throwable {

        System.out.println("**********");
        System.out.println("TEST 4");
        System.out.println("**********");

        usaVisaAplications.add("Ana Todorovska");
        usaVisaAplications.add("Slave Temkov");
        usaVisaAplications.add("Vlatco Spasev");
        usaVisaAplications.add("Stefan Andonov");

        List<String> expectedResult = new ArrayList<>();
        expectedResult = null;

        System.out.println("Expected: " + expectedResult);
        System.out.println("Actual: " + applicationsForUkVisaOnly(ukVisaAplications,usaVisaAplications));
        assertEquals(expectedResult,applicationsForUkVisaOnly(ukVisaAplications,usaVisaAplications));
//        assertNull(applicationsForUkVisaOnly(ukVisaAplications,usaVisaAplications));
    }


    /*
    Test 5: T T T F C5.2
    Second list is empty, thus we except every element of first list to be returned.
     */

    @Test
    public void Test5() throws Throwable {

        System.out.println("**********");
        System.out.println("TEST 5");
        System.out.println("**********");

        ukVisaAplications.add("Dzoce Srce");
        ukVisaAplications.add("Martin List");
        ukVisaAplications.add("Naum Balkava");
        ukVisaAplications.add("Ace Detelina");

        List<String> expectedResult = new ArrayList<>();
        expectedResult.add("Dzoce Srce");
        expectedResult.add("Martin List");
        expectedResult.add("Naum Balkava");
        expectedResult.add("Ace Detelina");

        System.out.println("Expected: " + expectedResult.toString());
        System.out.println("Actual: " + applicationsForUkVisaOnly(ukVisaAplications,usaVisaAplications).toString());
        assertEquals(expectedResult,applicationsForUkVisaOnly(ukVisaAplications,usaVisaAplications));
    }

    /*
    Test 6: T T T T C5.1
    Both lists are non-empty, but there all the elements from the first list
    are present in the second list as well, thus it returs null
     */

    @Test
    public void Test6() throws Throwable {

        System.out.println("**********");
        System.out.println("TEST 6");
        System.out.println("**********");

        ukVisaAplications.add("Dzoce Srce");
        ukVisaAplications.add("Ev Genija");

        usaVisaAplications.add("Dir Lada");
        usaVisaAplications.add("Ev Genija");
        usaVisaAplications.add("Dzoce Srce");

        List<String> expectedResult = new ArrayList<>();
        expectedResult = null;

        System.out.println("Expected: " + expectedResult);
        System.out.println("Actual: " + applicationsForUkVisaOnly(ukVisaAplications,usaVisaAplications));
        assertEquals(expectedResult,applicationsForUkVisaOnly(ukVisaAplications,usaVisaAplications));
//        assertNull(applicationsForUkVisaOnly(ukVisaAplications,usaVisaAplications));
    }


}