libstdc++-v3/testsuite/20_util/duration/io.cc

   1 // { dg-options "-std=gnu++20" }
   2 // { dg-do run { target c++20 } }
   3
   4 #include <chrono>
   5 #include <sstream>
   6 #include <testsuite_hooks.h>
   7
   8 void
   9 test01()
  10 {
  11   using namespace std::chrono;
  12   std::stringstream ss;
  13   ss << 0s << '\n';
  14   ss << 3h + 5min << '\n';
  15   ss << duration<long, std::ratio<2>>(3) << '\n';
  16   ss << duration<long, std::ratio<2, 3>>(9) << '\n';
  17   std::string s;
  18   std::getline(ss, s);
  19   VERIFY( s == "0s" );
  20   std::getline(ss, s);
  21   VERIFY( s == "185min" );
  22   std::getline(ss, s);
  23   VERIFY( s == "3[2]s" );
  24   std::getline(ss, s);
  25   VERIFY( s == "9[2/3]s" );
  26 }
  27
  28 void
  29 test02()
  30 {
  31 #ifdef _GLIBCXX_USE_WCHAR_T
  32   using namespace std::chrono;
  33   std::wstringstream ss;
  34   ss << 0s << L'\n';
  35   ss << 3h + 5min << L'\n';
  36   ss << duration<long, std::ratio<2>>(3) << L'\n';
  37   ss << duration<long, std::ratio<2, 3>>(9) << L'\n';
  38   std::wstring s;
  39   std::getline(ss, s);
  40   VERIFY( s == L"0s" );
  41   std::getline(ss, s);
  42   VERIFY( s == L"185min" );
  43   std::getline(ss, s);
  44   VERIFY( s == L"3[2]s" );
  45   std::getline(ss, s);
  46   VERIFY( s == L"9[2/3]s" );
  47 #endif
  48 }
  49
  50 void
  51 test_format()
  52 {
  53   using namespace std::chrono_literals;
  54   auto s = std::format("{} {}", 1h + 23min + 45s, -42min);
  55   VERIFY( s == "5025s -42min" );
  56   s = std::format("{:%j} {:%j} {:%j}", 1h + 23min + 45s, 75h, -99h);
  57   VERIFY( s == "0 3 -4" );
  58   s = std::format("{:%T = %H:%M:%S}", 1h + 23min + 45s);
  59   VERIFY( s == "01:23:45 = 01:23:45" );
  60   s = std::format("{:%Q} {:%q} {:%Q%q}", 6min + 1s, 44min, -22h);
  61   VERIFY( s == "361 min -22h" );
  62
  63   std::wstring ws = std::format(L"{:%Q%q}", 81s);
  64   VERIFY( ws == L"81s" );
  65
  66   // Only print '-' on numeric fields for negative durations:
  67   s = std::format("{:%Q} {:%q} {:%q%Q}", -21h, -20h, -19h);
  68   VERIFY( s == "-21 h h-19" );
  69   s = std::format("{:%p} {:%p%H}", -2h, -13h);
  70   VERIFY( s == "AM PM-13" );
  71   s = std::format("{:%t} {:%t%M}", -2h, -123s);
  72   VERIFY( s == "\t \t-02" );
  73
  74   std::string_view specs = "aAbBcCdDeFgGhHIjmMpqQrRSTuUVwWxXyYzZ";
  75   std::string_view my_specs = "HIjMpqQrRSTX";
  76   for (char c : specs)
  77   {
  78     char fmt[] = { '{', ':', '%', c, '}' };
  79     try
  80     {
  81       (void) std::vformat(std::string_view(fmt, 5), std::make_format_args(1s));
  82       // The call above should throw for any conversion-spec not in my_specs:
  83       VERIFY(my_specs.find(c) != my_specs.npos);
  84     }
  85     catch (const std::format_error& e)
  86     {
  87       VERIFY(my_specs.find(c) == my_specs.npos);
  88       std::string_view s = e.what();
  89       // Libstdc++-specific message:
  90       VERIFY(s.find("format argument does not contain the information "
  91                     "required by the chrono-specs") != s.npos);
  92     }
  93   }
  94 }
  95
  96 int main()
  97 {
  98   test01();
  99   test02();
 100   test_format();
 101   // TODO: test_parse();
 102 }