#include "fmt/chrono.h"
+#include <ctime>
+#include <vector>
+
#include "gtest-extra.h" // EXPECT_THROW_MSG
#include "util.h" // get_locale
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_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 defined(__MINGW32__) && !defined(_UCRT)
+ 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);
- fmt::format(fmt::runtime(s), *std::localtime(&t));
+ (void)fmt::format(fmt::runtime(s), *std::localtime(&t));
}
TEST(chrono_test, format_to_empty_container) {
EXPECT_TRUE(equal(tm, fmt::gmtime(t)));
}
-template <typename TimePoint> auto strftime(TimePoint tp) -> std::string {
+template <typename TimePoint> auto strftime_full(TimePoint tp) -> std::string {
auto t = std::chrono::system_clock::to_time_t(tp);
auto tm = *std::localtime(&t);
- char output[256] = {};
- std::strftime(output, sizeof(output), "%Y-%m-%d %H:%M:%S", &tm);
- return output;
+ return system_strftime("%Y-%m-%d %H:%M:%S", &tm);
}
TEST(chrono_test, time_point) {
auto t1 = std::chrono::system_clock::now();
- EXPECT_EQ(strftime(t1), fmt::format("{:%Y-%m-%d %H:%M:%S}", t1));
- EXPECT_EQ(strftime(t1), fmt::format("{}", t1));
+ EXPECT_EQ(strftime_full(t1), fmt::format("{:%Y-%m-%d %H:%M:%S}", t1));
+ EXPECT_EQ(strftime_full(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(t2), fmt::format("{:%Y-%m-%d %H:%M:%S}", t2));
+ EXPECT_EQ(strftime_full(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 defined(__MINGW32__) && !defined(_UCRT)
+ // 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(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));
+ }
}
#ifndef FMT_STATIC_THOUSANDS_SEPARATOR
TEST(chrono_test, invalid_specs) {
auto sec = std::chrono::seconds(0);
- EXPECT_THROW_MSG(fmt::format(runtime("{:%a}"), sec), fmt::format_error,
+ EXPECT_THROW_MSG((void)fmt::format(runtime("{:%a}"), sec), fmt::format_error,
"no date");
- EXPECT_THROW_MSG(fmt::format(runtime("{:%A}"), sec), fmt::format_error,
+ EXPECT_THROW_MSG((void)fmt::format(runtime("{:%A}"), sec), fmt::format_error,
"no date");
- EXPECT_THROW_MSG(fmt::format(runtime("{:%c}"), sec), fmt::format_error,
+ EXPECT_THROW_MSG((void)fmt::format(runtime("{:%c}"), sec), fmt::format_error,
"no date");
- EXPECT_THROW_MSG(fmt::format(runtime("{:%x}"), sec), fmt::format_error,
+ EXPECT_THROW_MSG((void)fmt::format(runtime("{:%x}"), sec), fmt::format_error,
"no date");
- EXPECT_THROW_MSG(fmt::format(runtime("{:%Ex}"), sec), fmt::format_error,
+ EXPECT_THROW_MSG((void)fmt::format(runtime("{:%Ex}"), sec), fmt::format_error,
"no date");
- EXPECT_THROW_MSG(fmt::format(runtime("{:%X}"), sec), fmt::format_error,
+ EXPECT_THROW_MSG((void)fmt::format(runtime("{:%X}"), sec), fmt::format_error,
"no date");
- EXPECT_THROW_MSG(fmt::format(runtime("{:%EX}"), sec), fmt::format_error,
+ EXPECT_THROW_MSG((void)fmt::format(runtime("{:%EX}"), sec), fmt::format_error,
"no date");
- EXPECT_THROW_MSG(fmt::format(runtime("{:%D}"), sec), fmt::format_error,
+ EXPECT_THROW_MSG((void)fmt::format(runtime("{:%D}"), sec), fmt::format_error,
"no date");
- EXPECT_THROW_MSG(fmt::format(runtime("{:%F}"), sec), fmt::format_error,
+ EXPECT_THROW_MSG((void)fmt::format(runtime("{:%F}"), sec), fmt::format_error,
"no date");
- EXPECT_THROW_MSG(fmt::format(runtime("{:%Ec}"), sec), fmt::format_error,
+ EXPECT_THROW_MSG((void)fmt::format(runtime("{:%Ec}"), sec), fmt::format_error,
"no date");
- EXPECT_THROW_MSG(fmt::format(runtime("{:%w}"), sec), fmt::format_error,
+ EXPECT_THROW_MSG((void)fmt::format(runtime("{:%w}"), sec), fmt::format_error,
"no date");
- EXPECT_THROW_MSG(fmt::format(runtime("{:%u}"), sec), fmt::format_error,
+ EXPECT_THROW_MSG((void)fmt::format(runtime("{:%u}"), sec), fmt::format_error,
"no date");
- EXPECT_THROW_MSG(fmt::format(runtime("{:%b}"), sec), fmt::format_error,
+ EXPECT_THROW_MSG((void)fmt::format(runtime("{:%b}"), sec), fmt::format_error,
"no date");
- EXPECT_THROW_MSG(fmt::format(runtime("{:%B}"), sec), fmt::format_error,
+ EXPECT_THROW_MSG((void)fmt::format(runtime("{:%B}"), sec), fmt::format_error,
"no date");
- EXPECT_THROW_MSG(fmt::format(runtime("{:%z}"), sec), fmt::format_error,
+ EXPECT_THROW_MSG((void)fmt::format(runtime("{:%z}"), sec), fmt::format_error,
"no date");
- EXPECT_THROW_MSG(fmt::format(runtime("{:%Z}"), sec), fmt::format_error,
+ EXPECT_THROW_MSG((void)fmt::format(runtime("{:%Z}"), sec), fmt::format_error,
"no date");
- EXPECT_THROW_MSG(fmt::format(runtime("{:%Eq}"), sec), fmt::format_error,
+ EXPECT_THROW_MSG((void)fmt::format(runtime("{:%Eq}"), sec), fmt::format_error,
"invalid format");
- EXPECT_THROW_MSG(fmt::format(runtime("{:%Oq}"), sec), fmt::format_error,
+ EXPECT_THROW_MSG((void)fmt::format(runtime("{:%Oq}"), sec), fmt::format_error,
"invalid format");
}
}
TEST(chrono_test, format_precision) {
- EXPECT_THROW_MSG(fmt::format(runtime("{:.2}"), std::chrono::seconds(42)),
- fmt::format_error,
- "precision not allowed for this argument type");
+ EXPECT_THROW_MSG(
+ (void)fmt::format(runtime("{:.2}"), 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) {
}
TEST(chrono_test, format_precision_q) {
- EXPECT_THROW_MSG(fmt::format(runtime("{:.2%Q %q}"), std::chrono::seconds(42)),
- fmt::format_error,
- "precision not allowed for this argument type");
+ 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(fmt::format(runtime("{:{o}"), std::chrono::seconds(0)),
+ EXPECT_THROW((void)fmt::format(runtime("{:{o}"), std::chrono::seconds(0)),
fmt::format_error);
}
TEST(chrono_test, invalid_colons) {
- EXPECT_THROW(fmt::format(runtime("{0}=:{0::"), std::chrono::seconds(0)),
+ EXPECT_THROW((void)fmt::format(runtime("{0}=:{0::"), std::chrono::seconds(0)),
fmt::format_error);
}
}
TEST(chrono_test, special_durations) {
- EXPECT_EQ(
- "40.",
- fmt::format("{:%S}", std::chrono::duration<double>(1e20)).substr(0, 3));
+ 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)));
- fmt::format("{:%S}",
- std::chrono::duration<float, std::atto>(1.79400457e+31f));
EXPECT_EQ(fmt::format("{}", std::chrono::duration<float, std::exa>(1)),
"1Es");
EXPECT_EQ(fmt::format("{}", std::chrono::duration<float, std::atto>(1)),
"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) {
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 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);
+ }
+ 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);
}
+ // 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");
}
#endif // FMT_STATIC_THOUSANDS_SEPARATOR
projects / ceph.git / blobdiff