import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;

import java.util.Arrays;
import java.util.Collections;
import java.util.List;


public class SimpleTest {

    private static Merge merger;
    private static List<List<Integer>> input1;
    private static List<Integer> opl1;
    private static List<List<Integer>> input2;
    private static List<Integer> opl2;

    @BeforeAll
    public static void init() {
        merger = new KWayMerge();
        input1 = Arrays.asList(Arrays.asList(1, 2, 5, 8, 9), Arrays.asList(2, 6, 7, 9, 10));
        opl1 = Arrays.asList(1, 2, 2, 5, 6, 7, 8, 9, 9, 10);
        input2 = Arrays.asList(
                Arrays.asList(14, 24, 32, 35, 48, 67),
                Arrays.asList(12, 15, 23, 28, 36, 49, 78, 99),
                Arrays.asList(2, 5, 10, 26, 48, 53),
                Arrays.asList(10, 18, 32, 45, 59, 78, 102, 106),
                Arrays.asList(6, 24, 36, 48, 60, 66, 72)
        );
        opl2 = Arrays.asList(2, 5, 6, 10, 10, 12, 14, 15, 18, 23, 24, 24, 26, 28, 32, 32, 35, 36, 36, 45,
                48, 48, 48, 49, 53, 59, 60, 66, 67, 72, 78, 78, 99, 102, 106);
    }

    @Test
    public void test1A() {
        Assertions.assertEquals(opl1, merger.mergeA(Collections.unmodifiableList(input1)), "mergeA werkt niet correct.");
    }

    @Test
    public void test1B() {
        Assertions.assertEquals(opl1, merger.mergeB(Collections.unmodifiableList(input1)), "mergeB werkt niet correct.");
    }

    @Test
    public void test1C() {
        Assertions.assertEquals(opl1, merger.mergeC(Collections.unmodifiableList(input1)), "mergeC werkt niet correct.");
    }

    @Test
    public void test2A() {
        Assertions.assertEquals(opl2, Collections.unmodifiableList(merger.mergeA(input2)), "mergeA werkt niet correct.");
    }

    @Test
    public void test2B() {
        Assertions.assertEquals(opl2, merger.mergeB(Collections.unmodifiableList(input2)), "mergeB werkt niet correct.");
    }

    @Test
    public void test2C() {
        Assertions.assertEquals(opl2, merger.mergeC(Collections.unmodifiableList(input2)), "mergeC werkt niet correct.");
    }

    @Test
    public void testLeegA() {
        Assertions.assertEquals(Collections.emptyList(), merger.mergeA(Collections.emptyList()), "mergeA werkt niet correct op een lege lijst.");
    }

    @Test
    public void testLeegB() {
        Assertions.assertEquals(Collections.emptyList(), merger.mergeA(Collections.emptyList()), "mergeB werkt niet correct op een lege lijst.");
    }

    @Test
    public void testLeegC() {
        Assertions.assertEquals(Collections.emptyList(), merger.mergeA(Collections.emptyList()), "mergeC werkt niet correct op een lege lijst.");
    }
    
}