assertEquals(1, facetInfo.query.length);
        assertNull(facetInfo.query[0]);
    }

    // Test toString method with all fields populated
    @Test
    public void test_toString_allFieldsPopulated() {
        facetInfo.field = new String[] { "field1", "field2" };
        facetInfo.query = new String[] { "query1", "query2" };
        facetInfo.size = 10;
        facetInfo.minDocCount = 5L;