libcxx/test/std/time/time.cal/time.cal.year/time.cal.year.members/is_leap.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 // UNSUPPORTED: c++03, c++11, c++14, c++17
   9
  10 // <chrono>
  11 // class year;
  12
  13 // constexpr bool is_leap() const noexcept;
  14 //  y_ % 4 == 0 && (y_ % 100 != 0 || y_ % 400 == 0)
  15 //
  16
  17 #include <chrono>
  18 #include <type_traits>
  19 #include <cassert>
  20
  21 #include "test_macros.h"
  22
  23 int main(int, char**)
  24 {
  25     using year = std::chrono::year;
  26
  27     ASSERT_NOEXCEPT(                year(1).is_leap());
  28     ASSERT_SAME_TYPE(bool, decltype(year(1).is_leap()));
  29
  30     static_assert(!year{1}.is_leap(), "");
  31     static_assert(!year{2}.is_leap(), "");
  32     static_assert(!year{3}.is_leap(), "");
  33     static_assert( year{4}.is_leap(), "");
  34
  35     assert( year{-2000}.is_leap());
  36     assert( year{ -400}.is_leap());
  37     assert(!year{ -300}.is_leap());
  38     assert(!year{ -200}.is_leap());
  39
  40     assert(!year{  200}.is_leap());
  41     assert(!year{  300}.is_leap());
  42     assert( year{  400}.is_leap());
  43     assert(!year{ 1997}.is_leap());
  44     assert(!year{ 1998}.is_leap());
  45     assert(!year{ 1999}.is_leap());
  46     assert( year{ 2000}.is_leap());
  47     assert(!year{ 2001}.is_leap());
  48     assert(!year{ 2002}.is_leap());
  49     assert(!year{ 2003}.is_leap());
  50     assert( year{ 2004}.is_leap());
  51     assert(!year{ 2100}.is_leap());
  52
  53   return 0;
  54 }