ceph/src/fmt/test/enforce-checks-test.cc

   1 // Formatting library for C++ - formatting library tests
   2 //
   3 // Copyright (c) 2012 - present, Victor Zverovich
   4 // All rights reserved.
   5 //
   6 // For the license information refer to format.h.
   7
   8 #include <iterator>
   9 #include <vector>
  10
  11 #include "fmt/chrono.h"
  12 #include "fmt/color.h"
  13 #include "fmt/format.h"
  14 #include "fmt/ostream.h"
  15 #include "fmt/ranges.h"
  16 #include "fmt/xchar.h"
  17
  18 // Exercise the API to verify that everything we expect to can compile.
  19 void test_format_api() {
  20   fmt::format(FMT_STRING("{}"), 42);
  21   fmt::format(FMT_STRING(L"{}"), 42);
  22   fmt::format(FMT_STRING("noop"));
  23
  24   fmt::to_string(42);
  25   fmt::to_wstring(42);
  26
  27   std::vector<char> out;
  28   fmt::format_to(std::back_inserter(out), FMT_STRING("{}"), 42);
  29
  30   char buffer[4];
  31   fmt::format_to_n(buffer, 3, FMT_STRING("{}"), 12345);
  32
  33   wchar_t wbuffer[4];
  34   fmt::format_to_n(wbuffer, 3, FMT_STRING(L"{}"), 12345);
  35 }
  36
  37 void test_chrono() {
  38   fmt::format(FMT_STRING("{}"), std::chrono::seconds(42));
  39   fmt::format(FMT_STRING(L"{}"), std::chrono::seconds(42));
  40 }
  41
  42 void test_text_style() {
  43   fmt::print(fg(fmt::rgb(255, 20, 30)), FMT_STRING("{}"), "rgb(255,20,30)");
  44   fmt::format(fg(fmt::rgb(255, 20, 30)), FMT_STRING("{}"), "rgb(255,20,30)");
  45
  46   fmt::text_style ts = fg(fmt::rgb(255, 20, 30));
  47   std::string out;
  48   fmt::format_to(std::back_inserter(out), ts,
  49                  FMT_STRING("rgb(255,20,30){}{}{}"), 1, 2, 3);
  50 }
  51
  52 void test_range() {
  53   std::vector<char> hello = {'h', 'e', 'l', 'l', 'o'};
  54   fmt::format(FMT_STRING("{}"), hello);
  55 }
  56
  57 int main() {
  58   test_format_api();
  59   test_chrono();
  60   test_text_style();
  61   test_range();
  62 }