test/std/utilities/time/time.cal/time.cal.ymwdlast/time.cal.ymwdlast.members/ok.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is dual licensed under the MIT and the University of Illinois Open
   6 // Source Licenses. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 // UNSUPPORTED: c++98, c++03, c++11, c++14, c++17
  10
  11 // <chrono>
  12 // class year_month_weekday_last;
  13
  14 // constexpr bool ok() const noexcept;
  15 //  Returns: y_.ok() && m_.ok() && wdl_.ok().
  16
  17 #include <chrono>
  18 #include <type_traits>
  19 #include <cassert>
  20
  21 #include "test_macros.h"
  22
  23 int main()
  24 {
  25     using year                    = std::chrono::year;
  26     using month                   = std::chrono::month;
  27     using weekday                 = std::chrono::weekday;
  28     using weekday_last            = std::chrono::weekday_last;
  29     using year_month_weekday_last = std::chrono::year_month_weekday_last;
  30
  31     constexpr month January   = std::chrono::January;
  32     constexpr weekday Tuesday = std::chrono::Tuesday;
  33
  34     ASSERT_NOEXCEPT(                std::declval<const year_month_weekday_last>().ok());
  35     ASSERT_SAME_TYPE(bool, decltype(std::declval<const year_month_weekday_last>().ok()));
  36
  37     static_assert(!year_month_weekday_last{year{-32768}, month{}, weekday_last{weekday{}}}.ok(),  ""); // All three bad
  38
  39     static_assert(!year_month_weekday_last{year{-32768}, January, weekday_last{Tuesday}}.ok(),    ""); // Bad year
  40     static_assert(!year_month_weekday_last{year{2019},   month{}, weekday_last{Tuesday}}.ok(),    ""); // Bad month
  41     static_assert(!year_month_weekday_last{year{2019},   January, weekday_last{weekday{7}}}.ok(), ""); // Bad day
  42
  43     static_assert(!year_month_weekday_last{year{-32768}, month{}, weekday_last{Tuesday}}.ok(),    ""); // Bad year & month
  44     static_assert(!year_month_weekday_last{year{2019},   month{}, weekday_last{weekday{7}}}.ok(), ""); // Bad month & day
  45     static_assert(!year_month_weekday_last{year{-32768}, January, weekday_last{weekday{7}}}.ok(), ""); // Bad year & day
  46
  47     static_assert( year_month_weekday_last{year{2019},   January, weekday_last{Tuesday}}.ok(),    ""); // All OK
  48
  49     for (unsigned i = 0; i <= 50; ++i)
  50     {
  51         year_month_weekday_last ym{year{2019}, January, weekday_last{Tuesday}};
  52         assert((ym.ok() == weekday_last{Tuesday}.ok()));
  53     }
  54
  55     for (unsigned i = 0; i <= 50; ++i)
  56     {
  57         year_month_weekday_last ym{year{2019}, January, weekday_last{weekday{i}}};
  58         assert((ym.ok() == weekday_last{weekday{i}}.ok()));
  59     }
  60
  61     for (unsigned i = 0; i <= 50; ++i)
  62     {
  63         year_month_weekday_last ym{year{2019}, month{i}, weekday_last{Tuesday}};
  64         assert((ym.ok() == month{i}.ok()));
  65     }
  66
  67     const int ymax = static_cast<int>(year::max());
  68     for (int i = ymax - 100; i <= ymax + 100; ++i)
  69     {
  70         year_month_weekday_last ym{year{i}, January, weekday_last{Tuesday}};
  71         assert((ym.ok() == year{i}.ok()));
  72     }
  73 }