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126 lines
4.1 KiB
C++
126 lines
4.1 KiB
C++
// Howard Hinnant
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// This work is licensed under a Creative Commons Attribution 4.0 International License.
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// http://creativecommons.org/licenses/by/4.0/
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// class day
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// {
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// unsigned char d_;
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// public:
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// explicit constexpr day(unsigned d) noexcept;
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//
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// day& operator++() noexcept;
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// day operator++(int) noexcept;
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// day& operator--() noexcept;
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// day operator--(int) noexcept;
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//
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// day& operator+=(const days& d) noexcept;
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// day& operator-=(const days& d) noexcept;
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//
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// constexpr explicit operator unsigned() const noexcept;
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// constexpr bool ok() const noexcept;
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// };
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//
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// constexpr bool operator==(const day& x, const day& y) noexcept;
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// constexpr bool operator!=(const day& x, const day& y) noexcept;
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// constexpr bool operator< (const day& x, const day& y) noexcept;
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// constexpr bool operator> (const day& x, const day& y) noexcept;
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// constexpr bool operator<=(const day& x, const day& y) noexcept;
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// constexpr bool operator>=(const day& x, const day& y) noexcept;
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//
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// constexpr day operator+(const day& x, const days& y) noexcept;
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// constexpr day operator+(const days& x, const day& y) noexcept;
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// constexpr day operator-(const day& x, const days& y) noexcept;
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// constexpr days operator-(const day& x, const day& y) noexcept;
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//
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// constexpr day operator "" _d(unsigned long long d) noexcept;
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// std::ostream& operator<<(std::ostream& os, const day& d);
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#include "date.h"
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#include <cassert>
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#include <sstream>
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#include <type_traits>
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static_assert( std::is_trivially_destructible<date::day>{}, "");
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static_assert(!std::is_default_constructible<date::day>{}, "");
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static_assert( std::is_trivially_copy_constructible<date::day>{}, "");
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static_assert( std::is_trivially_copy_assignable<date::day>{}, "");
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static_assert( std::is_trivially_move_constructible<date::day>{}, "");
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static_assert( std::is_trivially_move_assignable<date::day>{}, "");
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static_assert( std::is_nothrow_constructible<date::day, unsigned>{}, "");
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static_assert( std::is_nothrow_constructible<unsigned, date::day>{}, "");
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static_assert(!std::is_convertible<unsigned, date::day>{}, "");
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static_assert(!std::is_convertible<date::day, unsigned>{}, "");
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static_assert(static_cast<unsigned>(date::day{1}) == 1, "");
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static_assert(!date::day{0}.ok(), "");
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static_assert( date::day{1}.ok(), "");
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static_assert( date::day{2}.ok(), "");
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static_assert( date::day{3}.ok(), "");
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static_assert( date::day{29}.ok(), "");
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static_assert( date::day{30}.ok(), "");
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static_assert( date::day{31}.ok(), "");
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static_assert(!date::day{32}.ok(), "");
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int
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main()
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{
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using namespace date;
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static_assert(std::is_same<decltype(1_d), date::day>{}, "");
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static_assert(1_d == date::day{1}, "");
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static_assert(2_d == date::day{2}, "");
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static_assert( 1_d == 1_d, "");
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static_assert(!(1_d == 2_d), "");
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static_assert(!(2_d == 1_d), "");
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static_assert(!(1_d != 1_d), "");
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static_assert( 1_d != 2_d, "");
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static_assert( 2_d != 1_d, "");
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static_assert(!(1_d < 1_d), "");
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static_assert( 1_d < 2_d, "");
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static_assert(!(2_d < 1_d), "");
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static_assert( 1_d <= 1_d, "");
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static_assert( 1_d <= 2_d, "");
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static_assert(!(2_d <= 1_d), "");
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static_assert(!(1_d > 1_d), "");
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static_assert(!(1_d > 2_d), "");
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static_assert( 2_d > 1_d, "");
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static_assert( 1_d >= 1_d, "");
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static_assert(!(1_d >= 2_d), "");
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static_assert( 2_d >= 1_d, "");
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static_assert(3_d + days{7} == 10_d, "");
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static_assert(days{7} + 3_d == 10_d, "");
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static_assert(3_d + weeks{1} == 10_d, "");
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static_assert(weeks{1} + 3_d == 10_d, "");
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static_assert(7_d - days{3} == 4_d, "");
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static_assert(3_d - 7_d == days{-4}, "");
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static_assert(25_d - 11_d == weeks{2}, "");
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auto d = 1_d;
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assert(++d == 2_d);
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assert(d++ == 2_d);
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assert(d == 3_d);
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assert(d-- == 3_d);
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assert(d == 2_d);
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assert(--d == 1_d);
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assert((d += days{2}) == 3_d);
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assert((d -= days{2}) == 1_d);
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std::ostringstream os;
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os << d;
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assert(os.str() == "01");
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d += days{11};
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os.str("");
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os << d;
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assert(os.str() == "12");
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}
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