}

            @Override
            public String getIndexAdminIntegerFields() {
                return "";
            }

            @Override
            public String getIndexAdminLongFields() {
                return "content_length,favorite_count,click_count";
            }

            @Override
            public String getIndexAdminFloatFields() {
                return "boost";
            }

        assertEquals(1, fields.length);
        assertEquals("boost", fields[0]);
    }

    @Test
    public void test_indexAdminLongFields() {
        String fieldsStr = fessConfig.getIndexAdminLongFields();
        assertEquals("", fieldsStr);
        String[] fields = fieldsStr.isEmpty() ? new String[0] : fieldsStr.split(",");
        assertEquals(0, fields.length);
    }

    @Test