    @Test
    public void deleteNoteTest() {

        controller.setNote(1, 2, 5);
        controller.setNote(1, 2, 9);
        controller.deleteNote(1, 2, 5);

        boolean[] result = {false, false, false, false, false, false, false, false, true};

        assertArrayEquals(result, controller.getNotes(1, 2));
    }