Line data    Source code

       1              : // Copyright (c) 2011-2025  Made to Order Software Corp.  All Rights Reserved
       2              : //
       3              : // https://snapwebsites.org/project/snapdev
       4              : // contact@m2osw.com
       5              : //
       6              : // This program is free software: you can redistribute it and/or modify
       7              : // it under the terms of the GNU General Public License as published by
       8              : // the Free Software Foundation, either version 3 of the License, or
       9              : // (at your option) any later version.
      10              : //
      11              : // This program is distributed in the hope that it will be useful,
      12              : // but WITHOUT ANY WARRANTY; without even the implied warranty of
      13              : // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      14              : // GNU General Public License for more details.
      15              : //
      16              : // You should have received a copy of the GNU General Public License
      17              : // along with this program.  If not, see <https://www.gnu.org/licenses/>.
      18              : 
      19              : /** \file
      20              :  * \brief Verify the join_strings function & templates.
      21              :  *
      22              :  * This file implements tests to verify that the join_strings function works
      23              :  * as expected.
      24              :  *
      25              :  * Further it verifies that string concatenation happens as expected.
      26              :  */
      27              : 
      28              : // snapdev
      29              : //
      30              : #include    <snapdev/join_strings.h>
      31              : 
      32              : #include    <snapdev/to_string_literal.h>
      33              : 
      34              : 
      35              : // self
      36              : //
      37              : #include    "catch_main.h"
      38              : 
      39              : 
      40              : 
      41              : namespace
      42              : {
      43              : 
      44              : // example taken from communicatord project
      45              : //
      46              : constexpr int const         LOCAL_PORT = 4040;
      47              : constexpr std::string_view  g_communicatord_default_ip = "127.0.0.1";
      48              : constexpr std::string_view  g_communicatord_default_port = snapdev::integer_to_string_literal<LOCAL_PORT>.data();
      49              : constexpr std::string_view  g_communicatord_colon = ":";
      50              : constexpr std::string_view  g_communicatord_default_ip_port = snapdev::join_string_views<g_communicatord_default_ip, g_communicatord_colon, g_communicatord_default_port>;
      51              : 
      52              : constexpr std::string_view  g_communicatord_default_ip_port_v2 = snapdev::join_string_views_with_separator<g_communicatord_colon, g_communicatord_default_ip, g_communicatord_default_port>;
      53              : 
      54              : 
      55              : }
      56              : 
      57              : 
      58            1 : CATCH_TEST_CASE("join_string_view", "[string]")
      59              : {
      60            1 :     CATCH_START_SECTION("join_string_view: join strings at compile time")
      61              :     {
      62            3 :         std::string concat(g_communicatord_default_ip);
      63            1 :         concat += ':';
      64            1 :         concat += std::to_string(LOCAL_PORT);
      65              : 
      66              :         // the cast here is because catch2 doesn't handle the
      67              :         //
      68              :         //     string == string_view
      69              :         //
      70            3 :         CATCH_REQUIRE(concat == std::string(g_communicatord_default_ip_port));
      71            3 :         CATCH_REQUIRE(concat == std::string(g_communicatord_default_ip_port_v2));
      72            1 :     }
      73            1 :     CATCH_END_SECTION()
      74            1 : }
      75              : 
      76              : 
      77            4 : CATCH_TEST_CASE("join_strings", "[string]")
      78              : {
      79            4 :     CATCH_START_SECTION("join_strings: join strings at runtime with empty string in between")
      80              :     {
      81            3 :         std::string manual_concat(g_communicatord_default_ip);
      82            1 :         manual_concat += ':';
      83            1 :         manual_concat += std::to_string(LOCAL_PORT);
      84              : 
      85            1 :         std::vector<std::string> const list = {
      86              :                   std::string(g_communicatord_default_ip)
      87              :                 , std::string(":")
      88              :                 , std::string(g_communicatord_default_port)
      89            7 :             };
      90            3 :         std::string const join_concat(snapdev::join_strings(list, ""));
      91              : 
      92            1 :         CATCH_REQUIRE(manual_concat == join_concat);
      93            1 :     }
      94            4 :     CATCH_END_SECTION()
      95              : 
      96            4 :     CATCH_START_SECTION("join_strings: join strings at runtime with commas")
      97              :     {
      98            1 :         std::vector<std::string> const list = {
      99              :                   "Item 1"
     100              :                 , "Item 2"
     101              :                 , "Item 3"
     102            3 :             };
     103            3 :         std::string const join_concat(snapdev::join_strings(list, ", "));
     104              : 
     105            1 :         CATCH_REQUIRE(join_concat == "Item 1, Item 2, Item 3");
     106            1 :     }
     107            4 :     CATCH_END_SECTION()
     108              : 
     109            4 :     CATCH_START_SECTION("join_strings: \"join\" one string with commas")
     110              :     {
     111            3 :         std::vector<std::string> const list = { "Item 1" };
     112            3 :         std::string const join_concat(snapdev::join_strings(list, ", "));
     113              : 
     114            1 :         CATCH_REQUIRE(join_concat == "Item 1");
     115            1 :     }
     116            4 :     CATCH_END_SECTION()
     117              : 
     118            4 :     CATCH_START_SECTION("join_strings: nothing to join with commas")
     119              :     {
     120            1 :         std::vector<std::string> const list;
     121            3 :         std::string const join_concat(snapdev::join_strings(list, ", "));
     122              : 
     123            1 :         CATCH_REQUIRE(join_concat == std::string());
     124            1 :     }
     125            4 :     CATCH_END_SECTION()
     126            7 : }
     127              : 
     128              : 
     129              : // vim: ts=4 sw=4 et