public void test_load() {
        int result = labelTypeHelper.load();
        assertTrue(result >= 0);
    }

    @Test
    public void test_refresh() {
        List<LabelType> labelTypeList = createTestLabelTypeList();

        try {
            labelTypeHelper.refresh(labelTypeList);
        } catch (Exception e) {
            fail("refresh() should not throw an exception: " + e.getMessage());
        }
    }