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// { dg-do run { target c++20 } }
// { dg-require-namedlocale "fr_FR.ISO8859-15" }
// { dg-timeout-factor 2 }
#include <chrono>
#include <sstream>
#include <testsuite_hooks.h>
void
test_ostream()
{
using std::ostringstream;
using namespace std::chrono;
ostringstream ss;
for (int y : {-1234, -44, -1, 0, 5, 32, 325, 1066, 2022})
ss << year(y) << ' ';
VERIFY( ss.str() == "-1234 -0044 -0001 0000 0005 0032 0325 1066 2022 " );
ss.str("");
ss << year::min() << ' ' << year::max() << ' ' << --year::min();
VERIFY( ss.str() == "-32767 32767 -32768 is not a valid year" );
ss.str("");
ss.imbue(std::locale(ISO_8859(15,fr_FR)));
ss << 1789y;
VERIFY( ss.str() == "1789" );
}
void
test_format()
{
using std::chrono::year;
using namespace std::chrono_literals;
auto s = std::format("{:%y%%%Y%t%C%n}", 2022y);
VERIFY( s == "22%2022\t20\n" );
auto ws = std::format(L"{:%y%%%Y%t%C%n}", 2023y);
VERIFY( ws == L"23%2023\t20\n" );
s = std::format("{:%Y}", --year::min());
VERIFY( s == "-32768" );
s = std::format("{}", --year::min()); // formatted via ostream
VERIFY( s == "-32768 is not a valid year" );
s = std::format("{:%C %y} {:%C %y}", 1976y, -1976y);
VERIFY( s == "19 76 -20 76" ); // LWG 3831
s = std::format("{:%C %y} {:%C %y} {:%C %y}", -9y, -900y, -555y);
VERIFY( s == "-01 09 -09 00 -06 55" ); // LWG 4022
s = std::format("{0:%EC}{0:%Ey} = {0:%EY}", 1642y);
VERIFY( s == "1642 = 1642" );
s = std::format("{0:L%EC}{0:L%Ey} = {0:L%EY}", 1642y);
VERIFY( s == "1642 = 1642" );
s = std::format(std::locale::classic(), "{0:L%EC}{0:L%Ey} = {0:L%EY}", 1642y);
VERIFY( s == "1642 = 1642" );
// TODO test "{:L%EC}" with locale that has alternative era rep.
// TODO test "{:L%Ey}" with locale that has alternative year rep.
// TODO test "{:L%EY}" with locale that has alternative year rep.
// TODO test "{:L%Oy}" with locale that has alternative numeric rep.
std::string_view specs = "aAbBcCdDeFgGhHIjmMpqQrRSTuUVwWxXyYzZ";
std::string_view my_specs = "CyY";
for (char c : specs)
{
char fmt[] = { '{', ':', '%', c, '}' };
try
{
year y = 2022y;
(void) std::vformat(std::string_view(fmt, 5), std::make_format_args(y));
// The call above should throw for any conversion-spec not in my_specs:
VERIFY(my_specs.find(c) != my_specs.npos);
}
catch (const std::format_error& e)
{
VERIFY(my_specs.find(c) == my_specs.npos);
std::string_view s = e.what();
// Libstdc++-specific message:
VERIFY(s.find("format argument does not contain the information "
"required by the chrono-specs") != s.npos);
}
}
}
void
test_parse()
{
using namespace std::chrono;
year y;
std::istringstream is("2023");
VERIFY( is >> parse("%Y", y) );
VERIFY( ! is.eof() );
VERIFY( y == year(2023) );
is.clear();
is.str("2023");
VERIFY( is >> parse("%5Y", y) );
VERIFY( is.eof() );
VERIFY( y == year(2023) );
is.clear();
is.str("2023");
VERIFY( is >> parse("%2Y", y) );
VERIFY( ! is.eof() );
VERIFY( y == year(20) );
is.clear();
is.str("2023");
VERIFY( is >> parse("%y", y) );
VERIFY( ! is.eof() );
VERIFY( y == year(2020) );
minutes offset;
std::string abbrev;
is.clear();
is.str("23 20 25:61 +1:30 WAT"); // Invalid %H:%M doesn't matter for year.
VERIFY( is >> parse("%y %C %H:%M %Oz %Z", y, abbrev, offset) );
VERIFY( is.eof() );
VERIFY( y == year(2023) );
VERIFY( abbrev == "WAT" );
VERIFY( offset == 90min );
is.clear();
is.str("2022 367");
VERIFY( is >> parse("%Y %j", y) ); // Invalid day-of-year doesn't matter.
VERIFY( ! is.eof() );
VERIFY( y == 2022y );
y = 999y;
is.clear();
is.str("2023");
VERIFY( ! (is >> parse("%G", y)) ); // ISO year not aligned with Gregorian.
VERIFY( y == 999y );
is.clear();
is.str("2023-W01-1"); // 2023-1-2
is >> parse("%G-W%V-%u", y); // Can get Gregorian year from full ISO date.
VERIFY( ! is.eof() );
VERIFY( y == 2023y );
is.clear();
is.str("2022-W052-7"); // 2023-1-1
is >> parse("%G-W%3V-%2u", y);
VERIFY( is.eof() );
VERIFY( y == 2023y );
y = year(1);
is.clear();
is.str("2023 01");
VERIFY( !( is >> parse("%Y %z xx", y)) ); // Gets EOF and can't parse " xx".
VERIFY( is.eof() );
VERIFY( y == year(1) );
}
int main()
{
test_ostream();
test_format();
test_parse();
}
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