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Implemented set of basic deduction test.

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Implemented test for deduction from string, string_view,
time_zone ptr and other zoned_time.
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Tomasz Kamiński 2019-08-06 00:13:38 +02:00 committed by Howard Hinnant
parent 141ba85614
commit 1d721d9afd
1 changed files with 220 additions and 0 deletions
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test/tz_test/zoned_time_deduction.pass.cpp Normal file
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// The MIT License (MIT)
//
// Copyright (c) 2019 Tomasz Kamiński
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
#include "tz.h"
#include <cassert>
#include <type_traits>
#include <string>
#if HAS_DEDUCTION_GUIDES
#include <string_view>
template<typename TimeZonePtr, typename Source>
void testDeductionFrom(Source&& s)
{
using namespace date;
using namespace std::chrono;
// No time point
{
zoned_time zt(std::forward<Source>(s));
static_assert(std::is_same<decltype(zt), zoned_time<seconds, TimeZonePtr>>::value, "");
}
// sys_time
{
sys_days sd(2017_y/feb/20);
zoned_time ztd(std::forward<Source>(s), sd);
static_assert(std::is_same<decltype(ztd), zoned_time<seconds, TimeZonePtr>>::value, "");
sys_time<seconds> ss(sd);
zoned_time zts(std::forward<Source>(s), ss);
static_assert(std::is_same<decltype(zts), zoned_time<seconds, TimeZonePtr>>::value, "");
sys_time<milliseconds> sms(ss);
zoned_time ztms(std::forward<Source>(s), sms);
static_assert(std::is_same<decltype(ztms), zoned_time<milliseconds, TimeZonePtr>>::value, "");
}
// local_time
{
local_days ld(2017_y/feb/20);
zoned_time ztd(std::forward<Source>(s), ld);
static_assert(std::is_same<decltype(ztd), zoned_time<seconds, TimeZonePtr>>::value, "");
local_time<seconds> ls(ld);
zoned_time zts(std::forward<Source>(s), ls);
static_assert(std::is_same<decltype(zts), zoned_time<seconds, TimeZonePtr>>::value, "");
local_time<milliseconds> lms(ls);
zoned_time ztms(std::forward<Source>(s), lms);
static_assert(std::is_same<decltype(ztms), zoned_time<milliseconds, TimeZonePtr>>::value, "");
}
// local_time, choose
{
local_days ld(2017_y/feb/20);
zoned_time ztd(std::forward<Source>(s), ld, choose::earliest);
static_assert(std::is_same<decltype(ztd), zoned_time<seconds, TimeZonePtr>>::value, "");
local_time<seconds> ls(ld);
zoned_time zts(std::forward<Source>(s), ls, choose::earliest);
static_assert(std::is_same<decltype(zts), zoned_time<seconds, TimeZonePtr>>::value, "");
local_time<milliseconds> lms(ls);
zoned_time ztms(std::forward<Source>(s), lms, choose::earliest);
static_assert(std::is_same<decltype(ztms), zoned_time<milliseconds, TimeZonePtr>>::value, "");
}
// zoned_time
{
zoned_time<days> zd(sys_days(2017_y/feb/20));
zoned_time ztd(std::forward<Source>(s), zd);
static_assert(std::is_same<decltype(ztd), zoned_time<seconds, TimeZonePtr>>::value, "");
zoned_time<seconds> zs(zd);
zoned_time zts(std::forward<Source>(s), zs);
static_assert(std::is_same<decltype(zts), zoned_time<seconds, TimeZonePtr>>::value, "");
zoned_time<milliseconds> zms(zs);
zoned_time ztms(std::forward<Source>(s), zms);
static_assert(std::is_same<decltype(ztms), zoned_time<milliseconds, TimeZonePtr>>::value, "");
}
// zoned_time, choose
{
zoned_time<days> zd(sys_days(2017_y/feb/20));
zoned_time ztd(std::forward<Source>(s), zd, choose::earliest);
static_assert(std::is_same<decltype(ztd), zoned_time<seconds, TimeZonePtr>>::value, "");
zoned_time<seconds> zs(zd);
zoned_time zts(std::forward<Source>(s), zs, choose::earliest);
static_assert(std::is_same<decltype(zts), zoned_time<seconds, TimeZonePtr>>::value, "");
zoned_time<milliseconds> zms(zs);
zoned_time ztms(std::forward<Source>(s), zms, choose::earliest);
static_assert(std::is_same<decltype(ztms), zoned_time<milliseconds, TimeZonePtr>>::value, "");
}
}
struct MyString
{
MyString(std::string s) : ms(std::move(s)) {}
operator std::string_view() const { return ms; }
private:
std::string ms;
};
#endif // HAS_DEDUCTION_GUIDES
template<typename T>
T const& to_const(T& t) { return t; }
int
main()
{
using namespace date;
using namespace std::chrono;
#if HAS_DEDUCTION_GUIDES
// no arguments
{
zoned_time zt{};
static_assert(std::is_same<decltype(zt), zoned_time<seconds>>::value, "");
}
// zoned_time
{
zoned_time<days> zd(sys_days(2017_y/feb/20));
zoned_time ztd(zd);
static_assert(std::is_same<decltype(ztd), zoned_time<days>>::value, "");
zoned_time<seconds> zs(zd);
zoned_time zts(zs);
static_assert(std::is_same<decltype(zts), zoned_time<seconds>>::value, "");
zoned_time<milliseconds> zms(zs);
zoned_time ztms(zms);
static_assert(std::is_same<decltype(ztms), zoned_time<milliseconds>>::value, "");
}
// sys_time
{
sys_days sd(2017_y/feb/20);
zoned_time ztd(sd);
static_assert(std::is_same<decltype(ztd), zoned_time<seconds>>::value, "");
sys_time<seconds> ss(sd);
zoned_time zts(ss);
static_assert(std::is_same<decltype(zts), zoned_time<seconds>>::value, "");
sys_time<milliseconds> sms(ss);
zoned_time ztms(sms);
static_assert(std::is_same<decltype(ztms), zoned_time<milliseconds>>::value, "");
}
// time_zone const*
{
time_zone const* tz = current_zone();
testDeductionFrom<time_zone const*>(tz);
testDeductionFrom<time_zone const*>(to_const(tz));
testDeductionFrom<time_zone const*>(std::move(tz));
}
// char const*
{
char const* tz = "Europe/Warsaw";
testDeductionFrom<time_zone const*>(tz);
testDeductionFrom<time_zone const*>(to_const(tz));
testDeductionFrom<time_zone const*>(std::move(tz));
}
// std::string
{
std::string tz = "Europe/Warsaw";
testDeductionFrom<time_zone const*>(tz);
testDeductionFrom<time_zone const*>(to_const(tz));
testDeductionFrom<time_zone const*>(std::move(tz));
}
// std::string_view
{
std::string_view tz = "Europe/Warsaw";
testDeductionFrom<time_zone const*>(tz);
testDeductionFrom<time_zone const*>(to_const(tz));
testDeductionFrom<time_zone const*>(std::move(tz));
}
// MyString
{
MyString tz("Europe/Warsaw");
testDeductionFrom<time_zone const*>(tz);
testDeductionFrom<time_zone const*>(to_const(tz));
testDeductionFrom<time_zone const*>(std::move(tz));
}
#endif // HAS_DEDUCTION_GUIDES
}