StopwordsItem item3 = new StopwordsItem(3, "  word  ");
        assertEquals("  word  ", item3.getInput());
        assertEquals("  word  ", item3.toLineString());
    }

    public void test_longStrings() {
        // Test with long strings
        StringBuilder longString = new StringBuilder();
        for (int i = 0; i < 1000; i++) {
            longString.append("word");
        }