import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;

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

public class SimpleTest {

    private static MatrixOrdening ordening;

    @BeforeClass
    public static void init() {
        ordening = new DynamischeMatrixOrdening();
    }

    @Test
    public void test1() {
        List<Matrix> matrices = Arrays.asList(
                new Matrix('A', 50, 10),
                new Matrix('B', 10, 40),
                new Matrix('C', 40, 30),
                new Matrix('D', 30, 5)
        );

        MatrixVermenigvuldiging antw = ordening.minimumVermenigvuldigingen(Collections.unmodifiableList(matrices));
        Assert.assertEquals("A(B(CD))", antw.toString());
    }

    @Test
    public void test2() {
        List<Matrix> matrices = Arrays.asList(
                new Matrix('A', 10, 10),
                new Matrix('B', 10, 20),
                new Matrix('C', 20, 2),
                new Matrix('D', 2, 30),
                new Matrix('E', 30, 10)
        );

        MatrixVermenigvuldiging antw = ordening.minimumVermenigvuldigingen(Collections.unmodifiableList(matrices));
        Assert.assertEquals("(A(BC))(DE)", antw.toString());
    }

    @Test
    public void test3() {
        List<Matrix> matrices = Arrays.asList(
                new Matrix('A', 1, 10),
                new Matrix('B', 10, 20),
                new Matrix('C', 20, 1)
        );

        MatrixVermenigvuldiging antw = ordening.minimumVermenigvuldigingen(Collections.unmodifiableList(matrices));
        Assert.assertEquals("A(BC)", antw.toString());
    }

    @Test
    public void testOneMatrix(){
        List<Matrix> matrices = Arrays.asList(
                new Matrix('A', 210, 120)
        );

        MatrixVermenigvuldiging antw = ordening.minimumVermenigvuldigingen(Collections.unmodifiableList(matrices));
        Assert.assertEquals("A", antw.toString());
    }

}