Update DataTypeTests.java

Author: Paultagoras

jdbc-v2/src/test/java/com/clickhouse/jdbc/DataTypeTests.java

@@ -398,8 +398,10 @@ public void testIpAddressTypes() throws SQLException, UnknownHostException {
                 try (ResultSet rs = stmt.executeQuery("SELECT * FROM test_ips ORDER BY order")) {
                     assertTrue(rs.next());
                     assertEquals(rs.getObject("ipv4_ip"), ipv4AddressByIp);
+                    assertEquals(rs.getString("ipv4_ip"), ipv4AddressByIp.toString());
                     assertEquals(rs.getObject("ipv4_name"), ipv4AddressByName);
                     assertEquals(rs.getObject("ipv6"), ipv6Address);
+                    assertEquals(rs.getString("ipv6"), ipv6Address.toString());
                     assertFalse(rs.next());
                 }
             }