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

public class SimpleTest {

    private final MaximalSubsequenceSum solver = new MyMaximalSubsequenceSum();

    @Test
    @DisplayName("Voorbeeld (-2, 11, -4, 13, -5, -2)")
    public void exampleOne() {
        Assertions.assertEquals(20, solver.maximalSum(new int[]{-2, 11, -4, 13, -5, -2}));
    }

    @Test
    @DisplayName("Voorbeeld (1, -3, 4, -2, -1, 6)")
    public void exampleTwo() {
        Assertions.assertEquals(7, solver.maximalSum(new int[]{1, -3, 4, -2, -1, 6}));
    }

    @Test
    @DisplayName("Alle negatieve waarden geven 0")
    public void allNegative() {
        Assertions.assertEquals(0, solver.maximalSum(new int[]{-5, -1, -7, -3}));
    }

    @Test
    @DisplayName("Alle positieve waarden geven totaalsom")
    public void allPositive() {
        Assertions.assertEquals(15, solver.maximalSum(new int[]{5, 3, 7}));
    }

    @Test
    @DisplayName("Enkel beste prefix telt")
    public void prefixBest() {
        Assertions.assertEquals(9, solver.maximalSum(new int[]{3, 6, -10, 2, 1}));
    }
}