import org.junit.jupiter.api.Test;

import static org.junit.jupiter.api.Assertions.*;

public class Aufgabe5Test {

    @Test
    public void testEP2() {
        //test classes NamedBody and MassiveForceHashMap

        // create 12 named bodies
        NamedBody sun1, mercury1, venus1, earth1, moon1, mars1, deimos1, phobos1, vesta1, pallas1, hygiea1, ceres1;

        // create a nameless body
        Body earth2 = new Body(SolSystem4.EARTH);

        // create the same 12 named body-force pairs
        sun1 = new NamedBody(SolSystem4.SUN_NAMED);
        earth1 = new NamedBody(SolSystem4.EARTH_NAMED);
        moon1 = new NamedBody(SolSystem4.MOON_NAMED);
        mars1 = new NamedBody(SolSystem4.MARS_NAMED);
        deimos1 = new NamedBody(SolSystem4.DEIMOS_NAMED);
        phobos1 = new NamedBody(SolSystem4.PHOBOS_NAMED);
        mercury1 = new NamedBody(SolSystem4.MERCURY_NAMED);
        venus1 = new NamedBody(SolSystem4.VENUS_NAMED);
        vesta1 = new NamedBody(SolSystem4.VESTA_NAMED);
        pallas1 = new NamedBody(SolSystem4.PALLAS_NAMED);
        hygiea1 = new NamedBody(SolSystem4.HYGIEA_NAMED);
        ceres1 = new NamedBody(SolSystem4.CERES_NAMED);

        NamedBody sun2 = new NamedBody("Sun", 1.9895E30, new Vector3(0.1, 0.0, 0.0), new Vector3(0.0, 0.0, 0.0));
        NamedBody earth3 = new NamedBody("Earth", 1, new Vector3(0, 0, 0), new Vector3(0, 0, 0));
        assertEquals(sun1, sun2);
        assertEquals(sun2.hashCode(), sun1.hashCode());
        assertEquals(earth1, earth3);
        assertEquals(earth3.hashCode(), earth1.hashCode());

        // check basic functions of 'MassiveForceHashMap'
        MassiveForceHashMap map = new MassiveForceHashMap();
        map.put(sun1, new Vector3(0, 0, 0));
        map.put(mercury1, new Vector3(0, 0, 0));
        map.put(venus1, new Vector3(0, 0, 0));
        map.put(earth1, new Vector3(0, 0, 0));
        map.put(moon1, new Vector3(0, 0, 0));
        map.put(mars1, new Vector3(0, 0, 0));
        map.put(deimos1, new Vector3(0, 0, 0));
        map.put(phobos1, new Vector3(0, 0, 0));
        map.put(vesta1, new Vector3(0, 0, 0));
        map.put(pallas1, new Vector3(0, 0, 0));
        map.put(hygiea1, new Vector3(0, 0, 0));
        map.put(ceres1, new Vector3(0, 0, 0));
        map.put(mars1, new Vector3(0, 0, 0)); // inserted twice
        assertEquals(12, map.keyList().size());

        assertTrue(map.toString().contains("Mars"));
        assertTrue(map.toString().contains("Deimos"));
        assertTrue(map.toString().contains("Moon"));
        assertTrue(map.toString().contains("Earth"));

        MassiveLinkedList bl = map.keyList();
        boolean allThere = true;
        while (bl.size() > 0) {
            allThere &= map.containsKey(bl.pollFirst());
        }
        assertTrue(allThere);
        assertFalse(map.containsKey(new Body(0, new Vector3(0, 0, 0), new Vector3(0, 0, 0))));
        assertFalse(map.containsKey(new NamedBody("Omuamua", 0, new Vector3(0, 0, 0), new Vector3(0, 0, 0))));

        int hashCode1 = map.hashCode();

        Vector3 f = new Vector3(5, 5, 5);
        map.put(earth3, f);
        assertEquals(f, map.get(earth1));
        assertNull(map.get(earth2));

        int hashCode2 = map.hashCode();
        assertEquals(map, map);
        assertEquals(hashCode2, map.hashCode());
        assertNotEquals(hashCode1, hashCode2);
    }

    @Test
    public void testDelKey() {
        MassiveForceHashMap map = new MassiveForceHashMap();
        NamedBody sun1 = new NamedBody(SolSystem4.SUN_NAMED);
        NamedBody earth1 = new NamedBody(SolSystem4.EARTH_NAMED);
        NamedBody moon1 = new NamedBody(SolSystem4.MOON_NAMED);
        map.put(sun1, new Vector3());
        map.put(earth1, new Vector3());
        map.put(moon1, new Vector3());
        assertNotNull(map.get(sun1));
        assertNotNull(map.delete(sun1));
        assertNull(map.get(sun1));
        assertNull(map.delete(sun1));
    }
}