assertNotNull(tokens);
        // Should handle large text by splitting into chunks
        assertTrue(tokens.size() > 0);
    }

    @Test
    public void test_getFieldValues() throws Exception {
        Map<String, Object> document = new HashMap<>();
        document.put("string_field", "value1");
        document.put("string_array_field", new String[] { "value2", "value3" });