@Test
    public void testRemoveBlackMarker() {
        System.out.println("removeBlackMarker");
        Cell instance = new Cell(0,0);
        instance.addBlackMarker(0);
        instance.addBlackMarker(1);
        instance.addBlackMarker(2);
        instance.addBlackMarker(3);
        instance.addBlackMarker(4);
        instance.addBlackMarker(5);
        
        boolean[] result = instance.getMarkers(true);
        assertEquals(true, result[0]);
        assertEquals(true, result[1]);
        assertEquals(true, result[2]);
        assertEquals(true, result[3]);
        assertEquals(true, result[4]);
        assertEquals(true, result[5]);
        
        instance.removeBlackMarker(0);
        instance.removeBlackMarker(1);
        instance.removeBlackMarker(2);
        instance.removeBlackMarker(3);
        instance.removeBlackMarker(4);
        instance.removeBlackMarker(5);
        
        result = instance.getMarkers(true);
        assertEquals(false, result[0]);
        assertEquals(false, result[1]);
        assertEquals(false, result[2]);
        assertEquals(false, result[3]);
        assertEquals(false, result[4]);
        assertEquals(false, result[5]);
    }