// Verify query was processed
        assertNotNull(result);
        assertTrue(result instanceof MatchPhraseQueryBuilder);
    }

    @Test
    public void test_convertPhraseQuery_unknownField() {
        // Test with unknown field (not a search field)
        PhraseQuery.Builder builder = new PhraseQuery.Builder();
        builder.add(new Term("unknown_field", "test"));