assertNotNull(result);
        assertNotNull(stopwordsFile.stopwordsItemList);
    }

    // Test insert method
    @Test
    public void test_insert() {
        loadTestData();

        StopwordsItem newItem = new StopwordsItem(0, "test");
        stopwordsFile.insert(newItem);

        // Verify the item was added
        boolean found = false;

        assertEquals(0, result5.size());
        assertEquals(3, result5.getAllRecordCount());
    }

    // Test insert method
    @Test
    public void test_insert() throws Exception {
        writeTestFile("a,b => c\n");

        CharMappingItem newItem = new CharMappingItem(0, new String[] { "x", "y" }, "z");
        charMappingFile.insert(newItem);