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chrono-test.cc
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// Formatting library for C++ - time formatting tests
//
// Copyright (c) 2012 - present, Victor Zverovich
// All rights reserved.
//
// For the license information refer to format.h.
#include "fmt/chrono.h"
#include <algorithm>
#include <ctime>
#include <vector>
#include "gtest-extra.h" // EXPECT_THROW_MSG
#include "util.h" // get_locale
using fmt::runtime;
using testing::Contains;
template <typename Duration>
using sys_time = std::chrono::time_point<std::chrono::system_clock, Duration>;
#if defined(__MINGW32__) && !defined(_UCRT)
// Only C89 conversion specifiers when using MSVCRT instead of UCRT
# define FMT_HAS_C99_STRFTIME 0
#else
# define FMT_HAS_C99_STRFTIME 1
#endif
#if defined(__cpp_lib_chrono) && __cpp_lib_chrono >= 201907L
using days = std::chrono::days;
#else
using days = std::chrono::duration<std::chrono::hours::rep, std::ratio<86400>>;
#endif
auto make_tm() -> std::tm {
auto time = std::tm();
time.tm_mday = 1;
return time;
}
auto make_hour(int h) -> std::tm {
auto time = make_tm();
time.tm_hour = h;
return time;
}
auto make_minute(int m) -> std::tm {
auto time = make_tm();
time.tm_min = m;
return time;
}
auto make_second(int s) -> std::tm {
auto time = make_tm();
time.tm_sec = s;
return time;
}
std::string system_strftime(const std::string& format, const std::tm* timeptr,
std::locale* locptr = nullptr) {
auto loc = locptr ? *locptr : std::locale::classic();
auto& facet = std::use_facet<std::time_put<char>>(loc);
std::ostringstream os;
os.imbue(loc);
facet.put(os, os, ' ', timeptr, format.c_str(),
format.c_str() + format.size());
#ifdef _WIN32
// Workaround a bug in older versions of Universal CRT.
auto str = os.str();
if (str == "-0000") str = "+0000";
return str;
#else
return os.str();
#endif
}
FMT_CONSTEXPR std::tm make_tm(int year, int mon, int mday, int hour, int min,
int sec) {
auto tm = std::tm();
tm.tm_sec = sec;
tm.tm_min = min;
tm.tm_hour = hour;
tm.tm_mday = mday;
tm.tm_mon = mon - 1;
tm.tm_year = year - 1900;
return tm;
}
TEST(chrono_test, format_tm) {
auto tm = std::tm();
tm.tm_year = 116;
tm.tm_mon = 3;
tm.tm_mday = 25;
tm.tm_hour = 11;
tm.tm_min = 22;
tm.tm_sec = 33;
EXPECT_EQ(fmt::format("The date is {:%Y-%m-%d %H:%M:%S}.", tm),
"The date is 2016-04-25 11:22:33.");
EXPECT_EQ(fmt::format("{:%Y}", tm), "2016");
EXPECT_EQ(fmt::format("{:%C}", tm), "20");
EXPECT_EQ(fmt::format("{:%C%y}", tm), fmt::format("{:%Y}", tm));
EXPECT_EQ(fmt::format("{:%e}", tm), "25");
EXPECT_EQ(fmt::format("{:%D}", tm), "04/25/16");
EXPECT_EQ(fmt::format("{:%F}", tm), "2016-04-25");
EXPECT_EQ(fmt::format("{:%T}", tm), "11:22:33");
// Short year
tm.tm_year = 999 - 1900;
tm.tm_mon = 0; // for %G
tm.tm_mday = 2; // for %G
tm.tm_wday = 3; // for %G
tm.tm_yday = 1; // for %G
EXPECT_EQ(fmt::format("{:%Y}", tm), "0999");
EXPECT_EQ(fmt::format("{:%C%y}", tm), "0999");
EXPECT_EQ(fmt::format("{:%G}", tm), "0999");
tm.tm_year = 27 - 1900;
EXPECT_EQ(fmt::format("{:%Y}", tm), "0027");
EXPECT_EQ(fmt::format("{:%C%y}", tm), "0027");
// Overflow year
tm.tm_year = 2147483647;
EXPECT_EQ(fmt::format("{:%Y}", tm), "2147485547");
tm.tm_year = -2147483648;
EXPECT_EQ(fmt::format("{:%Y}", tm), "-2147481748");
// for week on the year
// https://www.cl.cam.ac.uk/~mgk25/iso-time.html
std::vector<std::tm> tm_list = {
make_tm(1975, 12, 29, 12, 14, 16), // W01
make_tm(1977, 1, 2, 12, 14, 16), // W53
make_tm(1999, 12, 27, 12, 14, 16), // W52
make_tm(1999, 12, 31, 12, 14, 16), // W52
make_tm(2000, 1, 1, 12, 14, 16), // W52
make_tm(2000, 1, 2, 12, 14, 16), // W52
make_tm(2000, 1, 3, 12, 14, 16) // W1
};
#if !FMT_HAS_C99_STRFTIME
GTEST_SKIP() << "Skip the rest of this test because it relies on strftime() "
"conforming to C99, but on this platform, MINGW + MSVCRT, "
"the function conforms only to C89.";
#endif
const std::string iso_week_spec = "%Y-%m-%d: %G %g %V";
for (auto ctm : tm_list) {
// Calculate tm_yday, tm_wday, etc.
std::time_t t = std::mktime(&ctm);
tm = *std::localtime(&t);
auto fmt_spec = fmt::format("{{:{}}}", iso_week_spec);
EXPECT_EQ(system_strftime(iso_week_spec, &tm),
fmt::format(fmt::runtime(fmt_spec), tm));
}
// Every day from 1970-01-01
std::time_t time_now = std::time(nullptr);
for (std::time_t t = 6 * 3600; t < time_now; t += 86400) {
tm = *std::localtime(&t);
auto fmt_spec = fmt::format("{{:{}}}", iso_week_spec);
EXPECT_EQ(system_strftime(iso_week_spec, &tm),
fmt::format(fmt::runtime(fmt_spec), tm));
}
}
// MSVC:
// minkernel\crts\ucrt\src\appcrt\time\wcsftime.cpp(971) : Assertion failed:
// timeptr->tm_year >= -1900 && timeptr->tm_year <= 8099
#ifndef _WIN32
TEST(chrono_test, format_tm_future) {
auto tm = std::tm();
tm.tm_year = 10445; // 10000+ years
tm.tm_mon = 3;
tm.tm_mday = 25;
tm.tm_hour = 11;
tm.tm_min = 22;
tm.tm_sec = 33;
EXPECT_EQ(fmt::format("The date is {:%Y-%m-%d %H:%M:%S}.", tm),
"The date is 12345-04-25 11:22:33.");
EXPECT_EQ(fmt::format("{:%Y}", tm), "12345");
EXPECT_EQ(fmt::format("{:%C}", tm), "123");
EXPECT_EQ(fmt::format("{:%C%y}", tm), fmt::format("{:%Y}", tm));
EXPECT_EQ(fmt::format("{:%D}", tm), "04/25/45");
EXPECT_EQ(fmt::format("{:%F}", tm), "12345-04-25");
EXPECT_EQ(fmt::format("{:%T}", tm), "11:22:33");
}
TEST(chrono_test, format_tm_past) {
auto tm = std::tm();
tm.tm_year = -2001;
tm.tm_mon = 3;
tm.tm_mday = 25;
tm.tm_hour = 11;
tm.tm_min = 22;
tm.tm_sec = 33;
EXPECT_EQ(fmt::format("The date is {:%Y-%m-%d %H:%M:%S}.", tm),
"The date is -101-04-25 11:22:33.");
EXPECT_EQ(fmt::format("{:%Y}", tm), "-101");
// macOS %C - "-1"
// Linux %C - "-2"
// fmt %C - "-1"
EXPECT_EQ(fmt::format("{:%C}", tm), "-1");
EXPECT_EQ(fmt::format("{:%C%y}", tm), fmt::format("{:%Y}", tm));
// macOS %D - "04/25/01" (%y)
// Linux %D - "04/25/99" (%y)
// fmt %D - "04/25/01" (%y)
EXPECT_EQ(fmt::format("{:%D}", tm), "04/25/01");
EXPECT_EQ(fmt::format("{:%F}", tm), "-101-04-25");
EXPECT_EQ(fmt::format("{:%T}", tm), "11:22:33");
tm.tm_year = -1901; // -1
EXPECT_EQ(fmt::format("{:%Y}", tm), "-001");
EXPECT_EQ(fmt::format("{:%C%y}", tm), fmt::format("{:%Y}", tm));
tm.tm_year = -1911; // -11
EXPECT_EQ(fmt::format("{:%Y}", tm), "-011");
EXPECT_EQ(fmt::format("{:%C%y}", tm), fmt::format("{:%Y}", tm));
}
#endif
TEST(chrono_test, grow_buffer) {
auto s = std::string("{:");
for (int i = 0; i < 30; ++i) s += "%c";
s += "}\n";
auto t = std::time(nullptr);
(void)fmt::format(fmt::runtime(s), *std::localtime(&t));
}
TEST(chrono_test, format_to_empty_container) {
auto time = std::tm();
time.tm_sec = 42;
auto s = std::string();
fmt::format_to(std::back_inserter(s), "{:%S}", time);
EXPECT_EQ(s, "42");
}
TEST(chrono_test, empty_result) { EXPECT_EQ(fmt::format("{}", std::tm()), ""); }
auto equal(const std::tm& lhs, const std::tm& rhs) -> bool {
return lhs.tm_sec == rhs.tm_sec && lhs.tm_min == rhs.tm_min &&
lhs.tm_hour == rhs.tm_hour && lhs.tm_mday == rhs.tm_mday &&
lhs.tm_mon == rhs.tm_mon && lhs.tm_year == rhs.tm_year &&
lhs.tm_wday == rhs.tm_wday && lhs.tm_yday == rhs.tm_yday &&
lhs.tm_isdst == rhs.tm_isdst;
}
TEST(chrono_test, gmtime) {
auto t = std::time(nullptr);
auto tm = *std::gmtime(&t);
EXPECT_TRUE(equal(tm, fmt::gmtime(t)));
}
template <typename TimePoint>
auto strftime_full_utc(TimePoint tp) -> std::string {
auto t = std::chrono::system_clock::to_time_t(tp);
auto tm = *std::gmtime(&t);
return system_strftime("%Y-%m-%d %H:%M:%S", &tm);
}
TEST(chrono_test, system_clock_time_point) {
auto t1 = std::chrono::time_point_cast<std::chrono::seconds>(
std::chrono::system_clock::now());
EXPECT_EQ(strftime_full_utc(t1), fmt::format("{:%Y-%m-%d %H:%M:%S}", t1));
EXPECT_EQ(strftime_full_utc(t1), fmt::format("{}", t1));
EXPECT_EQ(strftime_full_utc(t1), fmt::format("{:}", t1));
auto t2 = sys_time<std::chrono::seconds>(std::chrono::seconds(42));
EXPECT_EQ(strftime_full_utc(t2), fmt::format("{:%Y-%m-%d %H:%M:%S}", t2));
std::vector<std::string> spec_list = {
"%%", "%n", "%t", "%Y", "%EY", "%y", "%Oy", "%Ey", "%C",
"%EC", "%G", "%g", "%b", "%h", "%B", "%m", "%Om", "%U",
"%OU", "%W", "%OW", "%V", "%OV", "%j", "%d", "%Od", "%e",
"%Oe", "%a", "%A", "%w", "%Ow", "%u", "%Ou", "%H", "%OH",
"%I", "%OI", "%M", "%OM", "%S", "%OS", "%x", "%Ex", "%X",
"%EX", "%D", "%F", "%R", "%T", "%p"};
#ifndef _WIN32
// Disabled on Windows because these formats are not consistent among
// platforms.
spec_list.insert(spec_list.end(), {"%c", "%Ec", "%r"});
#elif !FMT_HAS_C99_STRFTIME
// Only C89 conversion specifiers when using MSVCRT instead of UCRT
spec_list = {"%%", "%Y", "%y", "%b", "%B", "%m", "%U", "%W", "%j", "%d",
"%a", "%A", "%w", "%H", "%I", "%M", "%S", "%x", "%X", "%p"};
#endif
spec_list.push_back("%Y-%m-%d %H:%M:%S");
for (const auto& spec : spec_list) {
auto t = std::chrono::system_clock::to_time_t(t1);
auto tm = *std::gmtime(&t);
auto sys_output = system_strftime(spec, &tm);
auto fmt_spec = fmt::format("{{:{}}}", spec);
EXPECT_EQ(sys_output, fmt::format(fmt::runtime(fmt_spec), t1));
EXPECT_EQ(sys_output, fmt::format(fmt::runtime(fmt_spec), tm));
}
// Timezone formatters tests makes sense for localtime.
#if FMT_HAS_C99_STRFTIME
spec_list = {"%z", "%Z"};
#else
spec_list = {"%Z"};
#endif
for (const auto& spec : spec_list) {
auto t = std::chrono::system_clock::to_time_t(t1);
auto tm = *std::localtime(&t);
auto sys_output = system_strftime(spec, &tm);
auto fmt_spec = fmt::format("{{:{}}}", spec);
EXPECT_EQ(sys_output, fmt::format(fmt::runtime(fmt_spec), tm));
if (spec == "%z") {
sys_output.insert(sys_output.end() - 2, 1, ':');
EXPECT_EQ(sys_output, fmt::format("{:%Ez}", tm));
EXPECT_EQ(sys_output, fmt::format("{:%Oz}", tm));
}
}
// Separate tests for UTC, since std::time_put can use local time and ignoring
// the timezone in std::tm (if it presents on platform).
if (fmt::detail::has_member_data_tm_zone<std::tm>::value) {
auto t = std::chrono::system_clock::to_time_t(t1);
auto tm = *std::gmtime(&t);
std::vector<std::string> tz_names = {"GMT", "UTC"};
EXPECT_THAT(tz_names, Contains(fmt::format("{:%Z}", t1)));
EXPECT_THAT(tz_names, Contains(fmt::format("{:%Z}", tm)));
}
if (fmt::detail::has_member_data_tm_gmtoff<std::tm>::value) {
auto t = std::chrono::system_clock::to_time_t(t1);
auto tm = *std::gmtime(&t);
EXPECT_EQ(fmt::format("{:%z}", t1), "+0000");
EXPECT_EQ(fmt::format("{:%z}", tm), "+0000");
EXPECT_EQ(fmt::format("{:%Ez}", t1), "+00:00");
EXPECT_EQ(fmt::format("{:%Ez}", tm), "+00:00");
EXPECT_EQ(fmt::format("{:%Oz}", t1), "+00:00");
EXPECT_EQ(fmt::format("{:%Oz}", tm), "+00:00");
}
}
#if FMT_USE_LOCAL_TIME
TEST(chrono_test, localtime) {
auto t = std::time(nullptr);
auto tm = *std::localtime(&t);
EXPECT_TRUE(equal(tm, fmt::localtime(t)));
}
template <typename Duration>
auto strftime_full_local(std::chrono::local_time<Duration> tp) -> std::string {
auto t = std::chrono::system_clock::to_time_t(
std::chrono::current_zone()->to_sys(tp));
auto tm = *std::localtime(&t);
return system_strftime("%Y-%m-%d %H:%M:%S", &tm);
}
TEST(chrono_test, local_system_clock_time_point) {
# ifdef _WIN32
return; // Not supported on Windows.
# endif
auto t1 = std::chrono::time_point_cast<std::chrono::seconds>(
std::chrono::current_zone()->to_local(std::chrono::system_clock::now()));
EXPECT_EQ(strftime_full_local(t1), fmt::format("{:%Y-%m-%d %H:%M:%S}", t1));
EXPECT_EQ(strftime_full_local(t1), fmt::format("{}", t1));
EXPECT_EQ(strftime_full_local(t1), fmt::format("{:}", t1));
using time_point = std::chrono::local_time<std::chrono::seconds>;
auto t2 = time_point(std::chrono::seconds(86400 + 42));
EXPECT_EQ(strftime_full_local(t2), fmt::format("{:%Y-%m-%d %H:%M:%S}", t2));
std::vector<std::string> spec_list = {
"%%", "%n", "%t", "%Y", "%EY", "%y", "%Oy", "%Ey", "%C",
"%EC", "%G", "%g", "%b", "%h", "%B", "%m", "%Om", "%U",
"%OU", "%W", "%OW", "%V", "%OV", "%j", "%d", "%Od", "%e",
"%Oe", "%a", "%A", "%w", "%Ow", "%u", "%Ou", "%H", "%OH",
"%I", "%OI", "%M", "%OM", "%S", "%OS", "%x", "%Ex", "%X",
"%EX", "%D", "%F", "%R", "%T", "%p", "%z", "%Z"};
# ifndef _WIN32
// Disabled on Windows because these formats are not consistent among
// platforms.
spec_list.insert(spec_list.end(), {"%c", "%Ec", "%r"});
# elif !FMT_HAS_C99_STRFTIME
// Only C89 conversion specifiers when using MSVCRT instead of UCRT
spec_list = {"%%", "%Y", "%y", "%b", "%B", "%m", "%U", "%W", "%j", "%d", "%a",
"%A", "%w", "%H", "%I", "%M", "%S", "%x", "%X", "%p", "%Z"};
# endif
spec_list.push_back("%Y-%m-%d %H:%M:%S");
for (const auto& spec : spec_list) {
auto t = std::chrono::system_clock::to_time_t(
std::chrono::current_zone()->to_sys(t1));
auto tm = *std::localtime(&t);
auto sys_output = system_strftime(spec, &tm);
auto fmt_spec = fmt::format("{{:{}}}", spec);
EXPECT_EQ(sys_output, fmt::format(fmt::runtime(fmt_spec), t1));
EXPECT_EQ(sys_output, fmt::format(fmt::runtime(fmt_spec), tm));
}
if (std::find(spec_list.cbegin(), spec_list.cend(), "%z") !=
spec_list.cend()) {
auto t = std::chrono::system_clock::to_time_t(
std::chrono::current_zone()->to_sys(t1));
auto tm = *std::localtime(&t);
auto sys_output = system_strftime("%z", &tm);
sys_output.insert(sys_output.end() - 2, 1, ':');
EXPECT_EQ(sys_output, fmt::format("{:%Ez}", t1));
EXPECT_EQ(sys_output, fmt::format("{:%Ez}", tm));
EXPECT_EQ(sys_output, fmt::format("{:%Oz}", t1));
EXPECT_EQ(sys_output, fmt::format("{:%Oz}", tm));
}
}
#endif // FMT_USE_LOCAL_TIME
#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
TEST(chrono_test, format_default) {
EXPECT_EQ(fmt::format("{}", std::chrono::seconds(42)), "42s");
EXPECT_EQ(fmt::format("{}", std::chrono::duration<int, std::atto>(42)),
"42as");
EXPECT_EQ(fmt::format("{}", std::chrono::duration<int, std::femto>(42)),
"42fs");
EXPECT_EQ(fmt::format("{}", std::chrono::duration<int, std::pico>(42)),
"42ps");
EXPECT_EQ(fmt::format("{}", std::chrono::nanoseconds(42)), "42ns");
EXPECT_EQ(fmt::format("{}", std::chrono::microseconds(42)), "42µs");
EXPECT_EQ(fmt::format("{}", std::chrono::milliseconds(42)), "42ms");
EXPECT_EQ(fmt::format("{}", std::chrono::duration<int, std::centi>(42)),
"42cs");
EXPECT_EQ(fmt::format("{}", std::chrono::duration<int, std::deci>(42)),
"42ds");
EXPECT_EQ(fmt::format("{}", std::chrono::seconds(42)), "42s");
EXPECT_EQ(fmt::format("{}", std::chrono::duration<int, std::deca>(42)),
"42das");
EXPECT_EQ(fmt::format("{}", std::chrono::duration<int, std::hecto>(42)),
"42hs");
EXPECT_EQ(fmt::format("{}", std::chrono::duration<int, std::kilo>(42)),
"42ks");
EXPECT_EQ(fmt::format("{}", std::chrono::duration<int, std::mega>(42)),
"42Ms");
EXPECT_EQ(fmt::format("{}", std::chrono::duration<int, std::giga>(42)),
"42Gs");
EXPECT_EQ(fmt::format("{}", std::chrono::duration<int, std::tera>(42)),
"42Ts");
EXPECT_EQ(fmt::format("{}", std::chrono::duration<int, std::peta>(42)),
"42Ps");
EXPECT_EQ(fmt::format("{}", std::chrono::duration<int, std::exa>(42)),
"42Es");
EXPECT_EQ(fmt::format("{}", std::chrono::minutes(42)), "42min");
EXPECT_EQ(fmt::format("{}", std::chrono::hours(42)), "42h");
EXPECT_EQ(fmt::format("{}", days(42)), "42d");
EXPECT_EQ(
fmt::format("{}", std::chrono::duration<int, std::ratio<15, 1>>(42)),
"42[15]s");
EXPECT_EQ(
fmt::format("{}", std::chrono::duration<int, std::ratio<15, 4>>(42)),
"42[15/4]s");
}
TEST(chrono_test, duration_align) {
auto s = std::chrono::seconds(42);
EXPECT_EQ(fmt::format("{:5}", s), "42s ");
EXPECT_EQ(fmt::format("{:{}}", s, 5), "42s ");
EXPECT_EQ(fmt::format("{:>5}", s), " 42s");
EXPECT_EQ(fmt::format("{:*^7}", s), "**42s**");
EXPECT_EQ(fmt::format("{:12%H:%M:%S}", std::chrono::seconds(12345)),
"03:25:45 ");
EXPECT_EQ(fmt::format("{:>12%H:%M:%S}", std::chrono::seconds(12345)),
" 03:25:45");
EXPECT_EQ(fmt::format("{:~^12%H:%M:%S}", std::chrono::seconds(12345)),
"~~03:25:45~~");
EXPECT_EQ(fmt::format("{:{}%H:%M:%S}", std::chrono::seconds(12345), 12),
"03:25:45 ");
}
TEST(chrono_test, tm_align) {
auto t = make_tm(1975, 12, 29, 12, 14, 16);
EXPECT_EQ(fmt::format("{:%F %T}", t), "1975-12-29 12:14:16");
EXPECT_EQ(fmt::format("{:30%F %T}", t), "1975-12-29 12:14:16 ");
EXPECT_EQ(fmt::format("{:{}%F %T}", t, 30), "1975-12-29 12:14:16 ");
EXPECT_EQ(fmt::format("{:<30%F %T}", t), "1975-12-29 12:14:16 ");
EXPECT_EQ(fmt::format("{:^30%F %T}", t), " 1975-12-29 12:14:16 ");
EXPECT_EQ(fmt::format("{:>30%F %T}", t), " 1975-12-29 12:14:16");
EXPECT_EQ(fmt::format("{:*<30%F %T}", t), "1975-12-29 12:14:16***********");
EXPECT_EQ(fmt::format("{:*^30%F %T}", t), "*****1975-12-29 12:14:16******");
EXPECT_EQ(fmt::format("{:*>30%F %T}", t), "***********1975-12-29 12:14:16");
}
TEST(chrono_test, tp_align) {
auto tp = std::chrono::time_point_cast<std::chrono::microseconds>(
std::chrono::system_clock::from_time_t(0));
EXPECT_EQ(fmt::format("{:%M:%S}", tp), "00:00.000000");
EXPECT_EQ(fmt::format("{:15%M:%S}", tp), "00:00.000000 ");
EXPECT_EQ(fmt::format("{:{}%M:%S}", tp, 15), "00:00.000000 ");
EXPECT_EQ(fmt::format("{:<15%M:%S}", tp), "00:00.000000 ");
EXPECT_EQ(fmt::format("{:^15%M:%S}", tp), " 00:00.000000 ");
EXPECT_EQ(fmt::format("{:>15%M:%S}", tp), " 00:00.000000");
EXPECT_EQ(fmt::format("{:*<15%M:%S}", tp), "00:00.000000***");
EXPECT_EQ(fmt::format("{:*^15%M:%S}", tp), "*00:00.000000**");
EXPECT_EQ(fmt::format("{:*>15%M:%S}", tp), "***00:00.000000");
}
TEST(chrono_test, format_specs) {
EXPECT_EQ(fmt::format("{:%%}", std::chrono::seconds(0)), "%");
EXPECT_EQ(fmt::format("{:%n}", std::chrono::seconds(0)), "\n");
EXPECT_EQ(fmt::format("{:%t}", std::chrono::seconds(0)), "\t");
EXPECT_EQ(fmt::format("{:%S}", std::chrono::seconds(0)), "00");
EXPECT_EQ(fmt::format("{:%S}", std::chrono::seconds(60)), "00");
EXPECT_EQ(fmt::format("{:%S}", std::chrono::seconds(42)), "42");
EXPECT_EQ(fmt::format("{:%S}", std::chrono::milliseconds(1234)), "01.234");
EXPECT_EQ(fmt::format("{:%M}", std::chrono::minutes(0)), "00");
EXPECT_EQ(fmt::format("{:%M}", std::chrono::minutes(60)), "00");
EXPECT_EQ(fmt::format("{:%M}", std::chrono::minutes(42)), "42");
EXPECT_EQ(fmt::format("{:%M}", std::chrono::seconds(61)), "01");
EXPECT_EQ(fmt::format("{:%H}", std::chrono::hours(0)), "00");
EXPECT_EQ(fmt::format("{:%H}", std::chrono::hours(24)), "00");
EXPECT_EQ(fmt::format("{:%H}", std::chrono::hours(14)), "14");
EXPECT_EQ(fmt::format("{:%H}", std::chrono::minutes(61)), "01");
EXPECT_EQ(fmt::format("{:%I}", std::chrono::hours(0)), "12");
EXPECT_EQ(fmt::format("{:%I}", std::chrono::hours(12)), "12");
EXPECT_EQ(fmt::format("{:%I}", std::chrono::hours(24)), "12");
EXPECT_EQ(fmt::format("{:%I}", std::chrono::hours(4)), "04");
EXPECT_EQ(fmt::format("{:%I}", std::chrono::hours(14)), "02");
EXPECT_EQ(fmt::format("{:%j}", days(12)), "12");
EXPECT_EQ(fmt::format("{:%j}", days(12345)), "12345");
EXPECT_EQ(fmt::format("{:%j}", std::chrono::hours(12345 * 24 + 12)), "12345");
EXPECT_EQ(fmt::format("{:%H:%M:%S}", std::chrono::seconds(12345)),
"03:25:45");
EXPECT_EQ(fmt::format("{:%R}", std::chrono::seconds(12345)), "03:25");
EXPECT_EQ(fmt::format("{:%T}", std::chrono::seconds(12345)), "03:25:45");
EXPECT_EQ(fmt::format("{:%Q}", std::chrono::seconds(12345)), "12345");
EXPECT_EQ(fmt::format("{:%q}", std::chrono::seconds(12345)), "s");
}
TEST(chrono_test, invalid_specs) {
auto sec = std::chrono::seconds(0);
EXPECT_THROW_MSG((void)fmt::format(runtime("{:%a}"), sec), fmt::format_error,
"no date");
EXPECT_THROW_MSG((void)fmt::format(runtime("{:%A}"), sec), fmt::format_error,
"no date");
EXPECT_THROW_MSG((void)fmt::format(runtime("{:%c}"), sec), fmt::format_error,
"no date");
EXPECT_THROW_MSG((void)fmt::format(runtime("{:%x}"), sec), fmt::format_error,
"no date");
EXPECT_THROW_MSG((void)fmt::format(runtime("{:%Ex}"), sec), fmt::format_error,
"no date");
EXPECT_THROW_MSG((void)fmt::format(runtime("{:%X}"), sec), fmt::format_error,
"no date");
EXPECT_THROW_MSG((void)fmt::format(runtime("{:%EX}"), sec), fmt::format_error,
"no date");
EXPECT_THROW_MSG((void)fmt::format(runtime("{:%D}"), sec), fmt::format_error,
"no date");
EXPECT_THROW_MSG((void)fmt::format(runtime("{:%F}"), sec), fmt::format_error,
"no date");
EXPECT_THROW_MSG((void)fmt::format(runtime("{:%Ec}"), sec), fmt::format_error,
"no date");
EXPECT_THROW_MSG((void)fmt::format(runtime("{:%w}"), sec), fmt::format_error,
"no date");
EXPECT_THROW_MSG((void)fmt::format(runtime("{:%u}"), sec), fmt::format_error,
"no date");
EXPECT_THROW_MSG((void)fmt::format(runtime("{:%b}"), sec), fmt::format_error,
"no date");
EXPECT_THROW_MSG((void)fmt::format(runtime("{:%B}"), sec), fmt::format_error,
"no date");
EXPECT_THROW_MSG((void)fmt::format(runtime("{:%z}"), sec), fmt::format_error,
"no date");
EXPECT_THROW_MSG((void)fmt::format(runtime("{:%Z}"), sec), fmt::format_error,
"no date");
EXPECT_THROW_MSG((void)fmt::format(runtime("{:%Eq}"), sec), fmt::format_error,
"invalid format");
EXPECT_THROW_MSG((void)fmt::format(runtime("{:%Oq}"), sec), fmt::format_error,
"invalid format");
EXPECT_THROW_MSG((void)fmt::format(runtime("{:abc}"), sec), fmt::format_error,
"invalid format");
EXPECT_THROW_MSG((void)fmt::format(runtime("{:.2f}"), sec), fmt::format_error,
"invalid format");
}
auto format_tm(const std::tm& time, fmt::string_view spec,
const std::locale& loc) -> std::string {
auto& facet = std::use_facet<std::time_put<char>>(loc);
std::ostringstream os;
os.imbue(loc);
facet.put(os, os, ' ', &time, spec.begin(), spec.end());
return os.str();
}
TEST(chrono_test, locale) {
auto loc = get_locale("ja_JP.utf8");
if (loc == std::locale::classic()) return;
# define EXPECT_TIME(spec, time, duration) \
{ \
auto jp_loc = std::locale("ja_JP.utf8"); \
EXPECT_EQ(format_tm(time, spec, jp_loc), \
fmt::format(jp_loc, "{:L" spec "}", duration)); \
}
EXPECT_TIME("%OH", make_hour(14), std::chrono::hours(14));
EXPECT_TIME("%OI", make_hour(14), std::chrono::hours(14));
EXPECT_TIME("%OM", make_minute(42), std::chrono::minutes(42));
EXPECT_TIME("%OS", make_second(42), std::chrono::seconds(42));
auto time = make_tm();
time.tm_hour = 3;
time.tm_min = 25;
time.tm_sec = 45;
auto sec = std::chrono::seconds(12345);
EXPECT_TIME("%r", time, sec);
EXPECT_TIME("%p", time, sec);
}
using dms = std::chrono::duration<double, std::milli>;
TEST(chrono_test, format_default_fp) {
EXPECT_EQ(fmt::format("{}", std::chrono::duration<float>(1.234)), "1.234s");
EXPECT_EQ(fmt::format("{}", std::chrono::duration<float, std::milli>(1.234)),
"1.234ms");
EXPECT_EQ(fmt::format("{}", std::chrono::duration<double>(1.234)), "1.234s");
EXPECT_EQ(fmt::format("{}", dms(1.234)), "1.234ms");
}
TEST(chrono_test, format_precision) {
EXPECT_THROW_MSG(
(void)fmt::format(runtime("{:.2%Q}"), std::chrono::seconds(42)),
fmt::format_error, "precision not allowed for this argument type");
EXPECT_EQ(fmt::format("{:.0}", dms(1.234)), "1ms");
EXPECT_EQ(fmt::format("{:.1}", dms(1.234)), "1.2ms");
EXPECT_EQ(fmt::format("{:.{}}", dms(1.234), 2), "1.23ms");
EXPECT_EQ(fmt::format("{:.0}", dms(12.56)), "13ms");
EXPECT_EQ(fmt::format("{:.1}", dms(12.56)), "12.6ms");
EXPECT_EQ(fmt::format("{:.2}", dms(12.56)), "12.56ms");
}
TEST(chrono_test, format_full_specs) {
EXPECT_EQ(fmt::format("{:6.0}", dms(1.234)), "1ms ");
EXPECT_EQ(fmt::format("{:6.1}", dms(1.234)), "1.2ms ");
EXPECT_EQ(fmt::format("{:>8.{}}", dms(1.234), 2), " 1.23ms");
EXPECT_EQ(fmt::format("{:^{}.{}}", dms(1.234), 7, 1), " 1.2ms ");
EXPECT_EQ(fmt::format("{0:^{2}.{1}}", dms(1.234), 2, 8), " 1.23ms ");
EXPECT_EQ(fmt::format("{:=^{}.{}}", dms(1.234), 9, 3), "=1.234ms=");
EXPECT_EQ(fmt::format("{:*^10.4}", dms(1.234)), "*1.2340ms*");
EXPECT_EQ(fmt::format("{:6.0}", dms(12.56)), "13ms ");
EXPECT_EQ(fmt::format("{:>8.{}}", dms(12.56), 0), " 13ms");
EXPECT_EQ(fmt::format("{:^{}.{}}", dms(12.56), 6, 0), " 13ms ");
EXPECT_EQ(fmt::format("{0:^{2}.{1}}", dms(12.56), 0, 8), " 13ms ");
EXPECT_EQ(fmt::format("{:=^{}.{}}", dms(12.56), 9, 0), "==13ms===");
EXPECT_EQ(fmt::format("{:*^10.0}", dms(12.56)), "***13ms***");
}
TEST(chrono_test, format_simple_q) {
EXPECT_EQ(fmt::format("{:%Q %q}", std::chrono::duration<float>(1.234)),
"1.234 s");
EXPECT_EQ(
fmt::format("{:%Q %q}", std::chrono::duration<float, std::milli>(1.234)),
"1.234 ms");
EXPECT_EQ(fmt::format("{:%Q %q}", std::chrono::duration<double>(1.234)),
"1.234 s");
EXPECT_EQ(fmt::format("{:%Q %q}", dms(1.234)), "1.234 ms");
}
TEST(chrono_test, format_precision_q) {
EXPECT_THROW_MSG(
(void)fmt::format(runtime("{:.2%Q %q}"), std::chrono::seconds(42)),
fmt::format_error, "precision not allowed for this argument type");
EXPECT_EQ(fmt::format("{:.1%Q %q}", dms(1.234)), "1.2 ms");
EXPECT_EQ(fmt::format("{:.{}%Q %q}", dms(1.234), 2), "1.23 ms");
}
TEST(chrono_test, format_full_specs_q) {
EXPECT_EQ(fmt::format("{:7.0%Q %q}", dms(1.234)), "1 ms ");
EXPECT_EQ(fmt::format("{:7.1%Q %q}", dms(1.234)), "1.2 ms ");
EXPECT_EQ(fmt::format("{:>8.{}%Q %q}", dms(1.234), 2), " 1.23 ms");
EXPECT_EQ(fmt::format("{:^{}.{}%Q %q}", dms(1.234), 8, 1), " 1.2 ms ");
EXPECT_EQ(fmt::format("{0:^{2}.{1}%Q %q}", dms(1.234), 2, 9), " 1.23 ms ");
EXPECT_EQ(fmt::format("{:=^{}.{}%Q %q}", dms(1.234), 10, 3), "=1.234 ms=");
EXPECT_EQ(fmt::format("{:*^11.4%Q %q}", dms(1.234)), "*1.2340 ms*");
EXPECT_EQ(fmt::format("{:7.0%Q %q}", dms(12.56)), "13 ms ");
EXPECT_EQ(fmt::format("{:>8.{}%Q %q}", dms(12.56), 0), " 13 ms");
EXPECT_EQ(fmt::format("{:^{}.{}%Q %q}", dms(12.56), 8, 0), " 13 ms ");
EXPECT_EQ(fmt::format("{0:^{2}.{1}%Q %q}", dms(12.56), 0, 9), " 13 ms ");
EXPECT_EQ(fmt::format("{:=^{}.{}%Q %q}", dms(12.56), 9, 0), "==13 ms==");
EXPECT_EQ(fmt::format("{:*^11.0%Q %q}", dms(12.56)), "***13 ms***");
}
TEST(chrono_test, invalid_width_id) {
EXPECT_THROW((void)fmt::format(runtime("{:{o}"), std::chrono::seconds(0)),
fmt::format_error);
}
TEST(chrono_test, invalid_colons) {
EXPECT_THROW((void)fmt::format(runtime("{0}=:{0::"), std::chrono::seconds(0)),
fmt::format_error);
}
TEST(chrono_test, negative_durations) {
EXPECT_EQ(fmt::format("{:%Q}", std::chrono::seconds(-12345)), "-12345");
EXPECT_EQ(fmt::format("{:%H:%M:%S}", std::chrono::seconds(-12345)),
"-03:25:45");
EXPECT_EQ(fmt::format("{:%M:%S}", std::chrono::duration<double>(-1)),
"-00:01");
EXPECT_EQ(fmt::format("{:%q}", std::chrono::seconds(-12345)), "s");
EXPECT_EQ(fmt::format("{:%S}",
std::chrono::duration<signed char, std::milli>(-127)),
"-00.127");
auto min = std::numeric_limits<int>::min();
EXPECT_EQ(fmt::format("{}", min),
fmt::format("{:%Q}", std::chrono::duration<int>(min)));
}
TEST(chrono_test, special_durations) {
EXPECT_EQ(fmt::format("{:%S}", std::chrono::duration<double>(1e20)), "40");
auto nan = std::numeric_limits<double>::quiet_NaN();
EXPECT_EQ(
fmt::format("{:%I %H %M %S %R %r}", std::chrono::duration<double>(nan)),
"nan nan nan nan nan:nan nan");
EXPECT_EQ(fmt::format("{}", std::chrono::duration<float, std::exa>(1)),
"1Es");
EXPECT_EQ(fmt::format("{}", std::chrono::duration<float, std::atto>(1)),
"1as");
EXPECT_EQ(fmt::format("{:%R}", std::chrono::duration<char, std::mega>{2}),
"03:33");
EXPECT_EQ(fmt::format("{:%T}", std::chrono::duration<char, std::mega>{2}),
"03:33:20");
EXPECT_EQ(
fmt::format("{:.3%S}", std::chrono::duration<float, std::pico>(1.234e12)),
"01.234");
}
TEST(chrono_test, unsigned_duration) {
EXPECT_EQ(fmt::format("{}", std::chrono::duration<unsigned>(42)), "42s");
}
TEST(chrono_test, weekday) {
auto loc = get_locale("es_ES.UTF-8");
std::locale::global(loc);
auto sat = fmt::weekday(6);
auto tm = std::tm();
tm.tm_wday = static_cast<int>(sat.c_encoding());
EXPECT_EQ(fmt::format("{}", sat), "Sat");
EXPECT_EQ(fmt::format("{:%a}", sat), "Sat");
EXPECT_EQ(fmt::format("{:%A}", sat), "Saturday");
EXPECT_EQ(fmt::format("{:%a}", tm), "Sat");
if (loc != std::locale::classic()) {
auto saturdays = std::vector<std::string>{"sáb", "sá.", "sáb."};
EXPECT_THAT(saturdays, Contains(fmt::format(loc, "{:L}", sat)));
EXPECT_THAT(saturdays, Contains(fmt::format(loc, "{:%a}", sat)));
EXPECT_THAT(saturdays, Contains(fmt::format(loc, "{:%a}", tm)));
}
}
TEST(chrono_test, cpp20_duration_subsecond_support) {
using attoseconds = std::chrono::duration<long long, std::atto>;
// Check that 18 digits of subsecond precision are supported.
EXPECT_EQ(fmt::format("{:%S}", attoseconds{999999999999999999}),
"00.999999999999999999");
EXPECT_EQ(fmt::format("{:%S}", attoseconds{673231113420148734}),
"00.673231113420148734");
EXPECT_EQ(fmt::format("{:%S}", attoseconds{-673231113420148734}),
"-00.673231113420148734");
EXPECT_EQ(fmt::format("{:%S}", std::chrono::nanoseconds{13420148734}),
"13.420148734");
EXPECT_EQ(fmt::format("{:%S}", std::chrono::nanoseconds{-13420148734}),
"-13.420148734");
EXPECT_EQ(fmt::format("{:%S}", std::chrono::milliseconds{1234}), "01.234");
// Check subsecond presision modifier.
EXPECT_EQ(fmt::format("{:.6%S}", std::chrono::nanoseconds{1234}),
"00.000001");
EXPECT_EQ(fmt::format("{:.18%S}", std::chrono::nanoseconds{1234}),
"00.000001234000000000");
EXPECT_EQ(fmt::format("{:.{}%S}", std::chrono::nanoseconds{1234}, 6),
"00.000001");
EXPECT_EQ(fmt::format("{:.6%S}", std::chrono::milliseconds{1234}),
"01.234000");
EXPECT_EQ(fmt::format("{:.6%S}", std::chrono::milliseconds{-1234}),
"-01.234000");
EXPECT_EQ(fmt::format("{:.2%S}", std::chrono::milliseconds{12345}), "12.34");
EXPECT_EQ(fmt::format("{:.2%S}", std::chrono::milliseconds{12375}), "12.37");
EXPECT_EQ(fmt::format("{:.2%S}", std::chrono::milliseconds{-12375}),
"-12.37");
EXPECT_EQ(fmt::format("{:.0%S}", std::chrono::milliseconds{12054}), "12");
EXPECT_EQ(fmt::format("{:.2%S}", std::chrono::milliseconds{99999}), "39.99");
EXPECT_EQ(fmt::format("{:.2%S}", std::chrono::milliseconds{1000}), "01.00");
EXPECT_EQ(fmt::format("{:.3%S}", std::chrono::milliseconds{1}), "00.001");
EXPECT_EQ(fmt::format("{:.3%S}", std::chrono::seconds{1234}), "34.000");
EXPECT_EQ(fmt::format("{:.3%S}", std::chrono::hours{1234}), "00.000");
EXPECT_EQ(fmt::format("{:.5%S}", dms(1.234)), "00.00123");
EXPECT_EQ(fmt::format("{:.8%S}", dms(1.234)), "00.00123400");
{
// Check that {:%H:%M:%S} is equivalent to {:%T}.
auto dur = std::chrono::milliseconds{3601234};
auto formatted_dur = fmt::format("{:%T}", dur);
EXPECT_EQ(formatted_dur, "01:00:01.234");
EXPECT_EQ(fmt::format("{:%H:%M:%S}", dur), formatted_dur);
EXPECT_EQ(fmt::format("{:.6%H:%M:%S}", dur), "01:00:01.234000");
}
using nanoseconds_dbl = std::chrono::duration<double, std::nano>;
EXPECT_EQ(fmt::format("{:%S}", nanoseconds_dbl{-123456789}), "-00.123456789");
EXPECT_EQ(fmt::format("{:%S}", nanoseconds_dbl{9123456789}), "09.123456789");
// Verify that only the seconds part is extracted and printed.
EXPECT_EQ(fmt::format("{:%S}", nanoseconds_dbl{99123456789}), "39.123456789");
EXPECT_EQ(fmt::format("{:%S}", nanoseconds_dbl{99123000000}), "39.123000000");
{
// Now the hour is printed, and we also test if negative doubles work.
auto dur = nanoseconds_dbl{-99123456789};
auto formatted_dur = fmt::format("{:%T}", dur);
EXPECT_EQ(formatted_dur, "-00:01:39.123456789");
EXPECT_EQ(fmt::format("{:%H:%M:%S}", dur), formatted_dur);
EXPECT_EQ(fmt::format("{:.3%H:%M:%S}", dur), "-00:01:39.123");
}
// Check that durations with precision greater than std::chrono::seconds have
// fixed precision, and print zeros even if there is no fractional part.
EXPECT_EQ(fmt::format("{:%S}", std::chrono::microseconds{7000000}),
"07.000000");
EXPECT_EQ(fmt::format("{:%S}",
std::chrono::duration<long long, std::ratio<1, 3>>(1)),
"00.333333");
EXPECT_EQ(fmt::format("{:%S}",
std::chrono::duration<long long, std::ratio<1, 7>>(1)),
"00.142857");
EXPECT_EQ(
fmt::format("{:%S}",
std::chrono::duration<signed char, std::ratio<1, 100>>(0x80)),
"-01.28");
EXPECT_EQ(
fmt::format("{:%M:%S}",
std::chrono::duration<short, std::ratio<1, 100>>(0x8000)),
"-05:27.68");
// Check that floating point seconds with ratio<1,1> are printed.
EXPECT_EQ(fmt::format("{:%S}", std::chrono::duration<double>{1.5}),
"01.500000");
EXPECT_EQ(fmt::format("{:%M:%S}", std::chrono::duration<double>{-61.25}),
"-01:01.250000");
}
#endif // FMT_STATIC_THOUSANDS_SEPARATOR
// Disable the utc_clock test for windows, as the icu.dll used for tzdb
// (time zone database) is not shipped with many windows versions.
#if FMT_USE_UTC_TIME && !defined(_WIN32)
TEST(chrono_test, utc_clock) {
auto t1 = std::chrono::system_clock::now();
auto t1_utc = std::chrono::utc_clock::from_sys(t1);
EXPECT_EQ(fmt::format("{:%Y-%m-%d %H:%M:%S}", t1),
fmt::format("{:%Y-%m-%d %H:%M:%S}", t1_utc));
}
#endif
TEST(chrono_test, timestamp_ratios) {
auto t1 =
sys_time<std::chrono::milliseconds>(std::chrono::milliseconds(67890));
EXPECT_EQ(fmt::format("{:%M:%S}", t1), "01:07.890");
auto t2 = sys_time<std::chrono::minutes>(std::chrono::minutes(7));
EXPECT_EQ(fmt::format("{:%M:%S}", t2), "07:00");
auto t3 = sys_time<std::chrono::duration<int, std::ratio<9>>>(
std::chrono::duration<int, std::ratio<9>>(7));
EXPECT_EQ(fmt::format("{:%M:%S}", t3), "01:03");
auto t4 = sys_time<std::chrono::duration<int, std::ratio<63>>>(
std::chrono::duration<int, std::ratio<63>>(1));
EXPECT_EQ(fmt::format("{:%M:%S}", t4), "01:03");
if (sizeof(time_t) > 4) {
auto tp =
sys_time<std::chrono::milliseconds>(std::chrono::seconds(32503680000));
EXPECT_EQ(fmt::format("{:%Y-%m-%d}", tp), "3000-01-01");
}
if (FMT_SAFE_DURATION_CAST) {
using years = std::chrono::duration<std::int64_t, std::ratio<31556952>>;
auto tp = sys_time<years>(years(std::numeric_limits<std::int64_t>::max()));
EXPECT_THROW_MSG((void)fmt::format("{:%Y-%m-%d}", tp), fmt::format_error,
"cannot format duration");
}
}
TEST(chrono_test, timestamp_sub_seconds) {
auto t1 = sys_time<std::chrono::duration<long long, std::ratio<1, 3>>>(
std::chrono::duration<long long, std::ratio<1, 3>>(4));
EXPECT_EQ(fmt::format("{:%S}", t1), "01.333333");
auto t2 = sys_time<std::chrono::duration<double, std::ratio<1, 3>>>(
std::chrono::duration<double, std::ratio<1, 3>>(4));
EXPECT_EQ(fmt::format("{:%S}", t2), "01.333333");
auto t3 = sys_time<std::chrono::seconds>(std::chrono::seconds(2));
EXPECT_EQ(fmt::format("{:%S}", t3), "02");
auto t4 = sys_time<std::chrono::duration<double>>(
std::chrono::duration<double, std::ratio<1, 1>>(9.5));
EXPECT_EQ(fmt::format("{:%S}", t4), "09.500000");
auto t5 = sys_time<std::chrono::duration<double>>(
std::chrono::duration<double, std::ratio<1, 1>>(9));
EXPECT_EQ(fmt::format("{:%S}", t5), "09");
auto t6 = sys_time<std::chrono::milliseconds>(std::chrono::seconds(1) +
std::chrono::milliseconds(120));
EXPECT_EQ(fmt::format("{:%S}", t6), "01.120");
auto t7 =
sys_time<std::chrono::microseconds>(std::chrono::microseconds(1234567));
EXPECT_EQ(fmt::format("{:%S}", t7), "01.234567");
auto t8 =
sys_time<std::chrono::nanoseconds>(std::chrono::nanoseconds(123456789));
EXPECT_EQ(fmt::format("{:%S}", t8), "00.123456789");
auto t9 = std::chrono::time_point_cast<std::chrono::nanoseconds>(
std::chrono::system_clock::now());
auto t9_sec = std::chrono::time_point_cast<std::chrono::seconds>(t9);
auto t9_sub_sec_part = fmt::format("{0:09}", (t9 - t9_sec).count());
EXPECT_EQ(fmt::format("{}.{}", strftime_full_utc(t9_sec), t9_sub_sec_part),
fmt::format("{:%Y-%m-%d %H:%M:%S}", t9));
EXPECT_EQ(fmt::format("{}.{}", strftime_full_utc(t9_sec), t9_sub_sec_part),
fmt::format("{:%Y-%m-%d %T}", t9));
auto t10 =
sys_time<std::chrono::milliseconds>(std::chrono::milliseconds(2000));
EXPECT_EQ(fmt::format("{:%S}", t10), "02.000");
auto epoch = sys_time<std::chrono::milliseconds>();
auto d = std::chrono::milliseconds(250);
EXPECT_EQ(fmt::format("{:%S}", epoch - d), "59.750");
EXPECT_EQ(fmt::format("{:%S}", epoch), "00.000");
EXPECT_EQ(fmt::format("{:%S}", epoch + d), "00.250");
}
TEST(chrono_test, glibc_extensions) {
EXPECT_THROW_MSG((void)fmt::format(runtime("{:%0}"), std::chrono::seconds()),
fmt::format_error, "invalid format");
EXPECT_THROW_MSG((void)fmt::format(runtime("{:%_}"), std::chrono::seconds()),
fmt::format_error, "invalid format");
EXPECT_THROW_MSG((void)fmt::format(runtime("{:%-}"), std::chrono::seconds()),
fmt::format_error, "invalid format");
{
const auto d = std::chrono::hours(1) + std::chrono::minutes(2) +
std::chrono::seconds(3);
EXPECT_EQ(fmt::format("{:%I,%H,%M,%S}", d), "01,01,02,03");
EXPECT_EQ(fmt::format("{:%_I,%_H,%_M,%_S}", d), " 1, 1, 2, 3");
EXPECT_EQ(fmt::format("{:%-I,%-H,%-M,%-S}", d), "1,1,2,3");
EXPECT_EQ(fmt::format("{:%-I,%H,%M,%S}", d), "1,01,02,03");
EXPECT_EQ(fmt::format("{:%OI,%OH,%OM,%OS}", d), "01,01,02,03");
EXPECT_EQ(fmt::format("{:%_OI,%_OH,%_OM,%_OS}", d), " 1, 1, 2, 3");
EXPECT_EQ(fmt::format("{:%-OI,%-OH,%-OM,%-OS}", d), "1,1,2,3");
}
{
const auto tm = make_tm(1970, 1, 1, 1, 2, 3);
EXPECT_EQ(fmt::format("{:%I,%H,%M,%S}", tm), "01,01,02,03");
EXPECT_EQ(fmt::format("{:%_I,%_H,%_M,%_S}", tm), " 1, 1, 2, 3");
EXPECT_EQ(fmt::format("{:%-I,%-H,%-M,%-S}", tm), "1,1,2,3");
EXPECT_EQ(fmt::format("{:%OI,%OH,%OM,%OS}", tm), "01,01,02,03");
EXPECT_EQ(fmt::format("{:%_OI,%_OH,%_OM,%_OS}", tm), " 1, 1, 2, 3");
EXPECT_EQ(fmt::format("{:%-OI,%-OH,%-OM,%-OS}", tm), "1,1,2,3");
}
{
const auto d = std::chrono::seconds(3) + std::chrono::milliseconds(140);
EXPECT_EQ(fmt::format("{:%S}", d), "03.140");
EXPECT_EQ(fmt::format("{:%_S}", d), " 3.140");
EXPECT_EQ(fmt::format("{:%-S}", d), "3.140");
}
{
auto d = std::chrono::duration<double>(3.14);
EXPECT_EQ(fmt::format("{:%S}", d), "03.140000");
EXPECT_EQ(fmt::format("{:%_S}", d), " 3.140000");
EXPECT_EQ(fmt::format("{:%-S}", d), "3.140000");