fmt-11.0.2/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 #define I 42  // simulate https://en.cppreference.com/w/c/numeric/complex/I
  12 #include "fmt/chrono.h"
  13 #include "fmt/color.h"
  14 #include "fmt/format.h"
  15 #include "fmt/ostream.h"
  16 #include "fmt/ranges.h"
  17 #include "fmt/xchar.h"
  18 #undef I
  19
  20 // Exercise the API to verify that everything we expect to can compile.
  21 void test_format_api() {
  22   (void)fmt::format(FMT_STRING("{}"), 42);
  23   (void)fmt::format(FMT_STRING(L"{}"), 42);
  24   (void)fmt::format(FMT_STRING("noop"));
  25
  26   (void)fmt::to_string(42);
  27   (void)fmt::to_wstring(42);
  28
  29   std::vector<char> out;
  30   fmt::format_to(std::back_inserter(out), FMT_STRING("{}"), 42);
  31
  32   char buffer[4];
  33   fmt::format_to_n(buffer, 3, FMT_STRING("{}"), 12345);
  34
  35   wchar_t wbuffer[4];
  36   fmt::format_to_n(wbuffer, 3, FMT_STRING(L"{}"), 12345);
  37 }
  38
  39 void test_chrono() {
  40   (void)fmt::format(FMT_STRING("{}"), std::chrono::seconds(42));
  41   (void)fmt::format(FMT_STRING(L"{}"), std::chrono::seconds(42));
  42 }
  43
  44 void test_text_style() {
  45   fmt::print(fg(fmt::rgb(255, 20, 30)), FMT_STRING("{}"), "rgb(255,20,30)");
  46   (void)fmt::format(fg(fmt::rgb(255, 20, 30)), FMT_STRING("{}"),
  47                     "rgb(255,20,30)");
  48
  49   fmt::text_style ts = fg(fmt::rgb(255, 20, 30));
  50   std::string out;
  51   fmt::format_to(std::back_inserter(out), ts,
  52                  FMT_STRING("rgb(255,20,30){}{}{}"), 1, 2, 3);
  53 }
  54
  55 void test_range() {
  56   std::vector<char> hello = {'h', 'e', 'l', 'l', 'o'};
  57   (void)fmt::format(FMT_STRING("{}"), hello);
  58 }
  59
  60 int main() {
  61   test_format_api();
  62   test_chrono();
  63   test_text_style();
  64   test_range();
  65 }