@Test
    public void testAsteroidYAndVelocityYRandomness() {
        ArrayList<Asteroid> ast = new ArrayList<Asteroid>();

        for (int i = 0; i < 20; i++) {
            p.spawnAsteroids();
        }

        for (Asteroid a : p.getAsteroids()) {
            if (a.getVelY() > 0) {
                ast.add(a);
            }
        }

        if (ast.size() < 10 || ast.size() > 390) {
            assertTrue(false);
        }
    }