@Test
    public void testCheckValidWorld() throws Exception {
        System.out.println("checkValidWorld");
        World instance = new World();
        instance.readInWorld("1.world");
        boolean expResult = true;
        boolean result = instance.checkValidWorld();
        assertEquals(expResult, result);
        
        instance = new World();
        instance.generateRandomContestWorld();
        expResult = true;
        result = instance.checkValidWorld();
        assertEquals(expResult, result);
    }