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ext-fmt/test/chrono-test.cc
Vladislav Shchapov 4841784e82 Simplify C99 strftime detection conditions 
Signed-off-by: Vladislav Shchapov <vladislav@shchapov.ru>
2022-12-25 10:16:19 -08:00

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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;
#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
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));
using time_point =
std::chrono::time_point<std::chrono::system_clock, std::chrono::seconds>;
auto t2 = time_point(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("+0000", fmt::format("{:%z}", t1));
EXPECT_EQ("+0000", fmt::format("{:%z}", tm));
EXPECT_EQ("+00:00", fmt::format("{:%Ez}", t1));
EXPECT_EQ("+00:00", fmt::format("{:%Ez}", tm));
EXPECT_EQ("+00:00", fmt::format("{:%Oz}", t1));
EXPECT_EQ("+00:00", fmt::format("{:%Oz}", tm));
}
}
#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));
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("42s", fmt::format("{}", std::chrono::seconds(42)));
EXPECT_EQ("42as",
fmt::format("{}", std::chrono::duration<int, std::atto>(42)));
EXPECT_EQ("42fs",
fmt::format("{}", std::chrono::duration<int, std::femto>(42)));
EXPECT_EQ("42ps",
fmt::format("{}", std::chrono::duration<int, std::pico>(42)));
EXPECT_EQ("42ns", fmt::format("{}", std::chrono::nanoseconds(42)));
EXPECT_EQ("42µs", fmt::format("{}", std::chrono::microseconds(42)));
EXPECT_EQ("42ms", fmt::format("{}", std::chrono::milliseconds(42)));
EXPECT_EQ("42cs",
fmt::format("{}", std::chrono::duration<int, std::centi>(42)));
EXPECT_EQ("42ds",
fmt::format("{}", std::chrono::duration<int, std::deci>(42)));
EXPECT_EQ("42s", fmt::format("{}", std::chrono::seconds(42)));
EXPECT_EQ("42das",
fmt::format("{}", std::chrono::duration<int, std::deca>(42)));
EXPECT_EQ("42hs",
fmt::format("{}", std::chrono::duration<int, std::hecto>(42)));
EXPECT_EQ("42ks",
fmt::format("{}", std::chrono::duration<int, std::kilo>(42)));
EXPECT_EQ("42Ms",
fmt::format("{}", std::chrono::duration<int, std::mega>(42)));
EXPECT_EQ("42Gs",
fmt::format("{}", std::chrono::duration<int, std::giga>(42)));
EXPECT_EQ("42Ts",
fmt::format("{}", std::chrono::duration<int, std::tera>(42)));
EXPECT_EQ("42Ps",
fmt::format("{}", std::chrono::duration<int, std::peta>(42)));
EXPECT_EQ("42Es",
fmt::format("{}", std::chrono::duration<int, std::exa>(42)));
EXPECT_EQ("42m", fmt::format("{}", std::chrono::minutes(42)));
EXPECT_EQ("42h", fmt::format("{}", std::chrono::hours(42)));
EXPECT_EQ(
"42[15]s",
fmt::format("{}", std::chrono::duration<int, std::ratio<15, 1>>(42)));
EXPECT_EQ(
"42[15/4]s",
fmt::format("{}", std::chrono::duration<int, std::ratio<15, 4>>(42)));
}
TEST(chrono_test, align) {
auto s = std::chrono::seconds(42);
EXPECT_EQ("42s ", fmt::format("{:5}", s));
EXPECT_EQ("42s ", fmt::format("{:{}}", s, 5));
EXPECT_EQ(" 42s", fmt::format("{:>5}", s));
EXPECT_EQ("**42s**", fmt::format("{:*^7}", s));
EXPECT_EQ("03:25:45 ",
fmt::format("{:12%H:%M:%S}", std::chrono::seconds(12345)));
EXPECT_EQ(" 03:25:45",
fmt::format("{:>12%H:%M:%S}", std::chrono::seconds(12345)));
EXPECT_EQ("~~03:25:45~~",
fmt::format("{:~^12%H:%M:%S}", std::chrono::seconds(12345)));
EXPECT_EQ("03:25:45 ",
fmt::format("{:{}%H:%M:%S}", std::chrono::seconds(12345), 12));
}
TEST(chrono_test, format_specs) {
EXPECT_EQ("%", fmt::format("{:%%}", std::chrono::seconds(0)));
EXPECT_EQ("\n", fmt::format("{:%n}", std::chrono::seconds(0)));
EXPECT_EQ("\t", fmt::format("{:%t}", std::chrono::seconds(0)));
EXPECT_EQ("00", fmt::format("{:%S}", std::chrono::seconds(0)));
EXPECT_EQ("00", fmt::format("{:%S}", std::chrono::seconds(60)));
EXPECT_EQ("42", fmt::format("{:%S}", std::chrono::seconds(42)));
EXPECT_EQ("01.234", fmt::format("{:%S}", std::chrono::milliseconds(1234)));
EXPECT_EQ("00", fmt::format("{:%M}", std::chrono::minutes(0)));
EXPECT_EQ("00", fmt::format("{:%M}", std::chrono::minutes(60)));
EXPECT_EQ("42", fmt::format("{:%M}", std::chrono::minutes(42)));
EXPECT_EQ("01", fmt::format("{:%M}", std::chrono::seconds(61)));
EXPECT_EQ("00", fmt::format("{:%H}", std::chrono::hours(0)));
EXPECT_EQ("00", fmt::format("{:%H}", std::chrono::hours(24)));
EXPECT_EQ("14", fmt::format("{:%H}", std::chrono::hours(14)));
EXPECT_EQ("01", fmt::format("{:%H}", std::chrono::minutes(61)));
EXPECT_EQ("12", fmt::format("{:%I}", std::chrono::hours(0)));
EXPECT_EQ("12", fmt::format("{:%I}", std::chrono::hours(12)));
EXPECT_EQ("12", fmt::format("{:%I}", std::chrono::hours(24)));
EXPECT_EQ("04", fmt::format("{:%I}", std::chrono::hours(4)));
EXPECT_EQ("02", fmt::format("{:%I}", std::chrono::hours(14)));
EXPECT_EQ("03:25:45",
fmt::format("{:%H:%M:%S}", std::chrono::seconds(12345)));
EXPECT_EQ("03:25", fmt::format("{:%R}", std::chrono::seconds(12345)));
EXPECT_EQ("03:25:45", fmt::format("{:%T}", std::chrono::seconds(12345)));
EXPECT_EQ("12345", fmt::format("{:%Q}", std::chrono::seconds(12345)));
EXPECT_EQ("s", fmt::format("{:%q}", std::chrono::seconds(12345)));
}
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) {
typedef std::chrono::duration<float> fs;
EXPECT_EQ("1.234s", fmt::format("{}", fs(1.234)));
typedef std::chrono::duration<float, std::milli> fms;
EXPECT_EQ("1.234ms", fmt::format("{}", fms(1.234)));
typedef std::chrono::duration<double> ds;
EXPECT_EQ("1.234s", fmt::format("{}", ds(1.234)));
EXPECT_EQ("1.234ms", fmt::format("{}", dms(1.234)));
}
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("1ms", fmt::format("{:.0}", dms(1.234)));
EXPECT_EQ("1.2ms", fmt::format("{:.1}", dms(1.234)));
EXPECT_EQ("1.23ms", fmt::format("{:.{}}", dms(1.234), 2));
EXPECT_EQ("13ms", fmt::format("{:.0}", dms(12.56)));
EXPECT_EQ("12.6ms", fmt::format("{:.1}", dms(12.56)));
EXPECT_EQ("12.56ms", fmt::format("{:.2}", dms(12.56)));
}
TEST(chrono_test, format_full_specs) {
EXPECT_EQ("1ms ", fmt::format("{:6.0}", dms(1.234)));
EXPECT_EQ("1.2ms ", fmt::format("{:6.1}", dms(1.234)));
EXPECT_EQ(" 1.23ms", fmt::format("{:>8.{}}", dms(1.234), 2));
EXPECT_EQ(" 1.2ms ", fmt::format("{:^{}.{}}", dms(1.234), 7, 1));
EXPECT_EQ(" 1.23ms ", fmt::format("{0:^{2}.{1}}", dms(1.234), 2, 8));
EXPECT_EQ("=1.234ms=", fmt::format("{:=^{}.{}}", dms(1.234), 9, 3));
EXPECT_EQ("*1.2340ms*", fmt::format("{:*^10.4}", dms(1.234)));
EXPECT_EQ("13ms ", fmt::format("{:6.0}", dms(12.56)));
EXPECT_EQ(" 13ms", fmt::format("{:>8.{}}", dms(12.56), 0));
EXPECT_EQ(" 13ms ", fmt::format("{:^{}.{}}", dms(12.56), 6, 0));
EXPECT_EQ(" 13ms ", fmt::format("{0:^{2}.{1}}", dms(12.56), 0, 8));
EXPECT_EQ("==13ms===", fmt::format("{:=^{}.{}}", dms(12.56), 9, 0));
EXPECT_EQ("***13ms***", fmt::format("{:*^10.0}", dms(12.56)));
}
TEST(chrono_test, format_simple_q) {
typedef std::chrono::duration<float> fs;
EXPECT_EQ("1.234 s", fmt::format("{:%Q %q}", fs(1.234)));
typedef std::chrono::duration<float, std::milli> fms;
EXPECT_EQ("1.234 ms", fmt::format("{:%Q %q}", fms(1.234)));
typedef std::chrono::duration<double> ds;
EXPECT_EQ("1.234 s", fmt::format("{:%Q %q}", ds(1.234)));
EXPECT_EQ("1.234 ms", fmt::format("{:%Q %q}", dms(1.234)));
}
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("1.2 ms", fmt::format("{:.1%Q %q}", dms(1.234)));
EXPECT_EQ("1.23 ms", fmt::format("{:.{}%Q %q}", dms(1.234), 2));
}
TEST(chrono_test, format_full_specs_q) {
EXPECT_EQ("1 ms ", fmt::format("{:7.0%Q %q}", dms(1.234)));
EXPECT_EQ("1.2 ms ", fmt::format("{:7.1%Q %q}", dms(1.234)));
EXPECT_EQ(" 1.23 ms", fmt::format("{:>8.{}%Q %q}", dms(1.234), 2));
EXPECT_EQ(" 1.2 ms ", fmt::format("{:^{}.{}%Q %q}", dms(1.234), 8, 1));
EXPECT_EQ(" 1.23 ms ", fmt::format("{0:^{2}.{1}%Q %q}", dms(1.234), 2, 9));
EXPECT_EQ("=1.234 ms=", fmt::format("{:=^{}.{}%Q %q}", dms(1.234), 10, 3));
EXPECT_EQ("*1.2340 ms*", fmt::format("{:*^11.4%Q %q}", dms(1.234)));
EXPECT_EQ("13 ms ", fmt::format("{:7.0%Q %q}", dms(12.56)));
EXPECT_EQ(" 13 ms", fmt::format("{:>8.{}%Q %q}", dms(12.56), 0));
EXPECT_EQ(" 13 ms ", fmt::format("{:^{}.{}%Q %q}", dms(12.56), 8, 0));
EXPECT_EQ(" 13 ms ", fmt::format("{0:^{2}.{1}%Q %q}", dms(12.56), 0, 9));
EXPECT_EQ("==13 ms==", fmt::format("{:=^{}.{}%Q %q}", dms(12.56), 9, 0));
EXPECT_EQ("***13 ms***", fmt::format("{:*^11.0%Q %q}", dms(12.56)));
}
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("-12345", fmt::format("{:%Q}", std::chrono::seconds(-12345)));
EXPECT_EQ("-03:25:45",
fmt::format("{:%H:%M:%S}", std::chrono::seconds(-12345)));
EXPECT_EQ("-00:01",
fmt::format("{:%M:%S}", std::chrono::duration<double>(-1)));
EXPECT_EQ("s", fmt::format("{:%q}", std::chrono::seconds(-12345)));
EXPECT_EQ("-00.127",
fmt::format("{:%S}",
std::chrono::duration<signed char, std::milli>{-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) {
auto value = fmt::format("{:%S}", std::chrono::duration<double>(1e20));
EXPECT_EQ(value, "40");
auto nan = std::numeric_limits<double>::quiet_NaN();
EXPECT_EQ(
"nan nan nan nan nan:nan nan",
fmt::format("{:%I %H %M %S %R %r}", std::chrono::duration<double>(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("44.000000000000",
fmt::format("{:%S}", std::chrono::duration<float, std::pico>(
1.54213895E+26)));
}
TEST(chrono_test, unsigned_duration) {
EXPECT_EQ("42s", fmt::format("{}", std::chrono::duration<unsigned>(42)));
}
TEST(chrono_test, weekday) {
auto loc = get_locale("ru_RU.UTF-8");
std::locale::global(loc);
auto mon = fmt::weekday(1);
auto tm = std::tm();
tm.tm_wday = static_cast<int>(mon.c_encoding());
EXPECT_EQ(fmt::format("{}", mon), "Mon");
EXPECT_EQ(fmt::format("{:%a}", tm), "Mon");
if (loc != std::locale::classic()) {
EXPECT_THAT((std::vector<std::string>{"пн", "Пн", "пнд", "Пнд"}),
Contains(fmt::format(loc, "{:L}", mon)));
EXPECT_THAT((std::vector<std::string>{"пн", "Пн", "пнд", "Пнд"}),
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("{:.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<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, timestamps_sub_seconds) {
std::chrono::time_point<std::chrono::system_clock,
std::chrono::duration<long long, std::ratio<1, 3>>>
t1(std::chrono::duration<long long, std::ratio<1, 3>>(4));
EXPECT_EQ(fmt::format("{:%S}", t1), "01.333333");
std::chrono::time_point<std::chrono::system_clock,
std::chrono::duration<double, std::ratio<1, 3>>>
t2(std::chrono::duration<double, std::ratio<1, 3>>(4));
EXPECT_EQ(fmt::format("{:%S}", t2), "01.333333");
const std::chrono::time_point<std::chrono::system_clock, std::chrono::seconds>
t3(std::chrono::seconds(2));
EXPECT_EQ(fmt::format("{:%S}", t3), "02");
const std::chrono::time_point<std::chrono::system_clock,
std::chrono::duration<double>>
t4(std::chrono::duration<double, std::ratio<1, 1>>(9.5));
EXPECT_EQ(fmt::format("{:%S}", t4), "09.500000");
const std::chrono::time_point<std::chrono::system_clock,
std::chrono::duration<double>>
t5(std::chrono::duration<double, std::ratio<1, 1>>(9));
EXPECT_EQ(fmt::format("{:%S}", t5), "09");
const std::chrono::time_point<std::chrono::system_clock,
std::chrono::milliseconds>
t6(std::chrono::seconds(1) + std::chrono::milliseconds(120));
EXPECT_EQ(fmt::format("{:%S}", t6), "01.120");
const std::chrono::time_point<std::chrono::system_clock,
std::chrono::microseconds>
t7(std::chrono::microseconds(1234567));
EXPECT_EQ(fmt::format("{:%S}", t7), "01.234567");
const std::chrono::time_point<std::chrono::system_clock,
std::chrono::nanoseconds>
t8(std::chrono::nanoseconds(123456789));
EXPECT_EQ(fmt::format("{:%S}", t8), "00.123456789");
const auto t9 = std::chrono::time_point_cast<std::chrono::nanoseconds>(
std::chrono::system_clock::now());
const 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));
const std::chrono::time_point<std::chrono::system_clock,
std::chrono::milliseconds>
t10(std::chrono::milliseconds(2000));
EXPECT_EQ(fmt::format("{:%S}", t10), "02.000");
}
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