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fmt/test/chrono-test.cc
Victor Zverovich d0abe7c246 Make chrono formatting locale-independent by default
2021-05-07 16:14:10 -07:00

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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 "gtest-extra.h" // EXPECT_THROW_MSG
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;
}
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(L"The date is {:%Y-%m-%d %H:%M:%S}.", tm),
L"The date is 2016-04-25 11:22:33.");
}
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(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, localtime) {
auto t = std::time(nullptr);
auto tm = *std::localtime(&t);
EXPECT_TRUE(equal(tm, fmt::localtime(t)));
}
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(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;
}
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));
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));
}
#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, format_wide) {
EXPECT_EQ(L"42s", fmt::format(L"{}", std::chrono::seconds(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(fmt::format(+"{:%a}", sec), fmt::format_error, "no date");
EXPECT_THROW_MSG(fmt::format(+"{:%A}", sec), fmt::format_error, "no date");
EXPECT_THROW_MSG(fmt::format(+"{:%c}", sec), fmt::format_error, "no date");
EXPECT_THROW_MSG(fmt::format(+"{:%x}", sec), fmt::format_error, "no date");
EXPECT_THROW_MSG(fmt::format(+"{:%Ex}", sec), fmt::format_error, "no date");
EXPECT_THROW_MSG(fmt::format(+"{:%X}", sec), fmt::format_error, "no date");
EXPECT_THROW_MSG(fmt::format(+"{:%EX}", sec), fmt::format_error, "no date");
EXPECT_THROW_MSG(fmt::format(+"{:%D}", sec), fmt::format_error, "no date");
EXPECT_THROW_MSG(fmt::format(+"{:%F}", sec), fmt::format_error, "no date");
EXPECT_THROW_MSG(fmt::format(+"{:%Ec}", sec), fmt::format_error, "no date");
EXPECT_THROW_MSG(fmt::format(+"{:%w}", sec), fmt::format_error, "no date");
EXPECT_THROW_MSG(fmt::format(+"{:%u}", sec), fmt::format_error, "no date");
EXPECT_THROW_MSG(fmt::format(+"{:%b}", sec), fmt::format_error, "no date");
EXPECT_THROW_MSG(fmt::format(+"{:%B}", sec), fmt::format_error, "no date");
EXPECT_THROW_MSG(fmt::format(+"{:%z}", sec), fmt::format_error, "no date");
EXPECT_THROW_MSG(fmt::format(+"{:%Z}", sec), fmt::format_error, "no date");
EXPECT_THROW_MSG(fmt::format(+"{:%Eq}", sec), fmt::format_error,
"invalid format");
EXPECT_THROW_MSG(fmt::format(+"{:%Oq}", 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();
}
# 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)); \
}
TEST(chrono_test, locale) {
auto loc_name = "ja_JP.utf8";
bool has_locale = false;
auto loc = std::locale();
try {
loc = std::locale(loc_name);
has_locale = true;
} catch (const std::runtime_error&) {
}
if (!has_locale) {
fmt::print("{} locale is missing.\n", loc_name);
return;
}
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(fmt::format(+"{:.2}", std::chrono::seconds(42)),
fmt::format_error,
"precision not allowed for this argument type");
EXPECT_EQ("1.2ms", fmt::format("{:.1}", dms(1.234)));
EXPECT_EQ("1.23ms", fmt::format("{:.{}}", dms(1.234), 2));
}
TEST(chrono_test, format_full_specs) {
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)));
}
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(fmt::format(+"{:.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("1.2 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)));
}
TEST(chrono_test, invalid_width_id) {
EXPECT_THROW(fmt::format(+"{:{o}", std::chrono::seconds(0)),
fmt::format_error);
}
TEST(chrono_test, invalid_colons) {
EXPECT_THROW(fmt::format(+"{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) {
EXPECT_EQ(
"40.",
fmt::format("{:%S}", std::chrono::duration<double>(1e20)).substr(0, 3));
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)),
"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");
}
TEST(chrono_test, unsigned_duration) {
EXPECT_EQ("42s", fmt::format("{}", std::chrono::duration<unsigned>(42)));
}
#endif // FMT_STATIC_THOUSANDS_SEPARATOR
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