diff options
Diffstat (limited to 'absl/time/internal/cctz/src/time_zone_format_test.cc')
-rw-r--r-- | absl/time/internal/cctz/src/time_zone_format_test.cc | 1408 |
1 files changed, 1408 insertions, 0 deletions
diff --git a/absl/time/internal/cctz/src/time_zone_format_test.cc b/absl/time/internal/cctz/src/time_zone_format_test.cc new file mode 100644 index 000000000000..6cea0360dd0e --- /dev/null +++ b/absl/time/internal/cctz/src/time_zone_format_test.cc @@ -0,0 +1,1408 @@ +// Copyright 2016 Google Inc. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#include "absl/time/internal/cctz/include/cctz/time_zone.h" + +#include <chrono> +#include <iomanip> +#include <sstream> +#include <string> + +#include "absl/time/internal/cctz/include/cctz/civil_time.h" +#include "gmock/gmock.h" +#include "gtest/gtest.h" + +using std::chrono::time_point_cast; +using std::chrono::system_clock; +using std::chrono::nanoseconds; +using std::chrono::microseconds; +using std::chrono::milliseconds; +using std::chrono::seconds; +using std::chrono::minutes; +using std::chrono::hours; +using testing::HasSubstr; + +namespace absl { +namespace time_internal { +namespace cctz { + +namespace { + +// This helper is a macro so that failed expectations show up with the +// correct line numbers. +#define ExpectTime(tp, tz, y, m, d, hh, mm, ss, off, isdst, zone) \ + do { \ + time_zone::absolute_lookup al = tz.lookup(tp); \ + EXPECT_EQ(y, al.cs.year()); \ + EXPECT_EQ(m, al.cs.month()); \ + EXPECT_EQ(d, al.cs.day()); \ + EXPECT_EQ(hh, al.cs.hour()); \ + EXPECT_EQ(mm, al.cs.minute()); \ + EXPECT_EQ(ss, al.cs.second()); \ + EXPECT_EQ(off, al.offset); \ + EXPECT_TRUE(isdst == al.is_dst); \ + EXPECT_STREQ(zone, al.abbr); \ + } while (0) + +const char RFC3339_full[] = "%Y-%m-%dT%H:%M:%E*S%Ez"; +const char RFC3339_sec[] = "%Y-%m-%dT%H:%M:%S%Ez"; + +const char RFC1123_full[] = "%a, %d %b %Y %H:%M:%S %z"; +const char RFC1123_no_wday[] = "%d %b %Y %H:%M:%S %z"; + +// A helper that tests the given format specifier by itself, and with leading +// and trailing characters. For example: TestFormatSpecifier(tp, "%a", "Thu"). +template <typename D> +void TestFormatSpecifier(time_point<D> tp, time_zone tz, const std::string& fmt, + const std::string& ans) { + EXPECT_EQ(ans, format(fmt, tp, tz)) << fmt; + EXPECT_EQ("xxx " + ans, format("xxx " + fmt, tp, tz)); + EXPECT_EQ(ans + " yyy", format(fmt + " yyy", tp, tz)); + EXPECT_EQ("xxx " + ans + " yyy", format("xxx " + fmt + " yyy", tp, tz)); +} + +} // namespace + +// +// Testing format() +// + +TEST(Format, TimePointResolution) { + const char kFmt[] = "%H:%M:%E*S"; + const time_zone utc = utc_time_zone(); + const time_point<nanoseconds> t0 = system_clock::from_time_t(1420167845) + + milliseconds(123) + microseconds(456) + + nanoseconds(789); + EXPECT_EQ("03:04:05.123456789", + format(kFmt, time_point_cast<nanoseconds>(t0), utc)); + EXPECT_EQ("03:04:05.123456", + format(kFmt, time_point_cast<microseconds>(t0), utc)); + EXPECT_EQ("03:04:05.123", + format(kFmt, time_point_cast<milliseconds>(t0), utc)); + EXPECT_EQ("03:04:05", + format(kFmt, time_point_cast<seconds>(t0), utc)); + EXPECT_EQ("03:04:05", + format(kFmt, time_point_cast<sys_seconds>(t0), utc)); + EXPECT_EQ("03:04:00", + format(kFmt, time_point_cast<minutes>(t0), utc)); + EXPECT_EQ("03:00:00", + format(kFmt, time_point_cast<hours>(t0), utc)); +} + +TEST(Format, TimePointExtendedResolution) { + const char kFmt[] = "%H:%M:%E*S"; + const time_zone utc = utc_time_zone(); + const time_point<sys_seconds> tp = + std::chrono::time_point_cast<sys_seconds>( + std::chrono::system_clock::from_time_t(0)) + + std::chrono::hours(12) + std::chrono::minutes(34) + + std::chrono::seconds(56); + + EXPECT_EQ( + "12:34:56.123456789012345", + detail::format(kFmt, tp, detail::femtoseconds(123456789012345), utc)); + EXPECT_EQ( + "12:34:56.012345678901234", + detail::format(kFmt, tp, detail::femtoseconds(12345678901234), utc)); + EXPECT_EQ( + "12:34:56.001234567890123", + detail::format(kFmt, tp, detail::femtoseconds(1234567890123), utc)); + EXPECT_EQ( + "12:34:56.000123456789012", + detail::format(kFmt, tp, detail::femtoseconds(123456789012), utc)); + + EXPECT_EQ("12:34:56.000000000000123", + detail::format(kFmt, tp, detail::femtoseconds(123), utc)); + EXPECT_EQ("12:34:56.000000000000012", + detail::format(kFmt, tp, detail::femtoseconds(12), utc)); + EXPECT_EQ("12:34:56.000000000000001", + detail::format(kFmt, tp, detail::femtoseconds(1), utc)); +} + +TEST(Format, Basics) { + time_zone tz = utc_time_zone(); + time_point<nanoseconds> tp = system_clock::from_time_t(0); + + // Starts with a couple basic edge cases. + EXPECT_EQ("", format("", tp, tz)); + EXPECT_EQ(" ", format(" ", tp, tz)); + EXPECT_EQ(" ", format(" ", tp, tz)); + EXPECT_EQ("xxx", format("xxx", tp, tz)); + std::string big(128, 'x'); + EXPECT_EQ(big, format(big, tp, tz)); + // Cause the 1024-byte buffer to grow. + std::string bigger(100000, 'x'); + EXPECT_EQ(bigger, format(bigger, tp, tz)); + + tp += hours(13) + minutes(4) + seconds(5); + tp += milliseconds(6) + microseconds(7) + nanoseconds(8); + EXPECT_EQ("1970-01-01", format("%Y-%m-%d", tp, tz)); + EXPECT_EQ("13:04:05", format("%H:%M:%S", tp, tz)); + EXPECT_EQ("13:04:05.006", format("%H:%M:%E3S", tp, tz)); + EXPECT_EQ("13:04:05.006007", format("%H:%M:%E6S", tp, tz)); + EXPECT_EQ("13:04:05.006007008", format("%H:%M:%E9S", tp, tz)); +} + +TEST(Format, PosixConversions) { + const time_zone tz = utc_time_zone(); + auto tp = system_clock::from_time_t(0); + + TestFormatSpecifier(tp, tz, "%d", "01"); + TestFormatSpecifier(tp, tz, "%e", " 1"); // extension but internal support + TestFormatSpecifier(tp, tz, "%H", "00"); + TestFormatSpecifier(tp, tz, "%I", "12"); + TestFormatSpecifier(tp, tz, "%j", "001"); + TestFormatSpecifier(tp, tz, "%m", "01"); + TestFormatSpecifier(tp, tz, "%M", "00"); + TestFormatSpecifier(tp, tz, "%S", "00"); + TestFormatSpecifier(tp, tz, "%U", "00"); + TestFormatSpecifier(tp, tz, "%w", "4"); // 4=Thursday + TestFormatSpecifier(tp, tz, "%W", "00"); + TestFormatSpecifier(tp, tz, "%y", "70"); + TestFormatSpecifier(tp, tz, "%Y", "1970"); + TestFormatSpecifier(tp, tz, "%z", "+0000"); + TestFormatSpecifier(tp, tz, "%Z", "UTC"); + TestFormatSpecifier(tp, tz, "%%", "%"); + +#if defined(__linux__) + // SU/C99/TZ extensions + TestFormatSpecifier(tp, tz, "%C", "19"); + TestFormatSpecifier(tp, tz, "%D", "01/01/70"); + TestFormatSpecifier(tp, tz, "%F", "1970-01-01"); + TestFormatSpecifier(tp, tz, "%g", "70"); + TestFormatSpecifier(tp, tz, "%G", "1970"); + TestFormatSpecifier(tp, tz, "%k", " 0"); + TestFormatSpecifier(tp, tz, "%l", "12"); + TestFormatSpecifier(tp, tz, "%n", "\n"); + TestFormatSpecifier(tp, tz, "%R", "00:00"); + TestFormatSpecifier(tp, tz, "%t", "\t"); + TestFormatSpecifier(tp, tz, "%T", "00:00:00"); + TestFormatSpecifier(tp, tz, "%u", "4"); // 4=Thursday + TestFormatSpecifier(tp, tz, "%V", "01"); + TestFormatSpecifier(tp, tz, "%s", "0"); +#endif +} + +TEST(Format, LocaleSpecific) { + const time_zone tz = utc_time_zone(); + auto tp = system_clock::from_time_t(0); + + TestFormatSpecifier(tp, tz, "%a", "Thu"); + TestFormatSpecifier(tp, tz, "%A", "Thursday"); + TestFormatSpecifier(tp, tz, "%b", "Jan"); + TestFormatSpecifier(tp, tz, "%B", "January"); + + // %c should at least produce the numeric year and time-of-day. + const std::string s = format("%c", tp, utc_time_zone()); + EXPECT_THAT(s, HasSubstr("1970")); + EXPECT_THAT(s, HasSubstr("00:00:00")); + + TestFormatSpecifier(tp, tz, "%p", "AM"); + TestFormatSpecifier(tp, tz, "%x", "01/01/70"); + TestFormatSpecifier(tp, tz, "%X", "00:00:00"); + +#if defined(__linux__) + // SU/C99/TZ extensions + TestFormatSpecifier(tp, tz, "%h", "Jan"); // Same as %b + TestFormatSpecifier(tp, tz, "%P", "am"); + TestFormatSpecifier(tp, tz, "%r", "12:00:00 AM"); + + // Modified conversion specifiers %E_ + TestFormatSpecifier(tp, tz, "%Ec", "Thu Jan 1 00:00:00 1970"); + TestFormatSpecifier(tp, tz, "%EC", "19"); + TestFormatSpecifier(tp, tz, "%Ex", "01/01/70"); + TestFormatSpecifier(tp, tz, "%EX", "00:00:00"); + TestFormatSpecifier(tp, tz, "%Ey", "70"); + TestFormatSpecifier(tp, tz, "%EY", "1970"); + + // Modified conversion specifiers %O_ + TestFormatSpecifier(tp, tz, "%Od", "01"); + TestFormatSpecifier(tp, tz, "%Oe", " 1"); + TestFormatSpecifier(tp, tz, "%OH", "00"); + TestFormatSpecifier(tp, tz, "%OI", "12"); + TestFormatSpecifier(tp, tz, "%Om", "01"); + TestFormatSpecifier(tp, tz, "%OM", "00"); + TestFormatSpecifier(tp, tz, "%OS", "00"); + TestFormatSpecifier(tp, tz, "%Ou", "4"); // 4=Thursday + TestFormatSpecifier(tp, tz, "%OU", "00"); + TestFormatSpecifier(tp, tz, "%OV", "01"); + TestFormatSpecifier(tp, tz, "%Ow", "4"); // 4=Thursday + TestFormatSpecifier(tp, tz, "%OW", "00"); + TestFormatSpecifier(tp, tz, "%Oy", "70"); +#endif +} + +TEST(Format, Escaping) { + const time_zone tz = utc_time_zone(); + auto tp = system_clock::from_time_t(0); + + TestFormatSpecifier(tp, tz, "%%", "%"); + TestFormatSpecifier(tp, tz, "%%a", "%a"); + TestFormatSpecifier(tp, tz, "%%b", "%b"); + TestFormatSpecifier(tp, tz, "%%Ea", "%Ea"); + TestFormatSpecifier(tp, tz, "%%Es", "%Es"); + TestFormatSpecifier(tp, tz, "%%E3S", "%E3S"); + TestFormatSpecifier(tp, tz, "%%OS", "%OS"); + TestFormatSpecifier(tp, tz, "%%O3S", "%O3S"); + + // Multiple levels of escaping. + TestFormatSpecifier(tp, tz, "%%%Y", "%1970"); + TestFormatSpecifier(tp, tz, "%%%E3S", "%00.000"); + TestFormatSpecifier(tp, tz, "%%%%E3S", "%%E3S"); +} + +TEST(Format, ExtendedSeconds) { + const time_zone tz = utc_time_zone(); + + // No subseconds. + time_point<nanoseconds> tp = system_clock::from_time_t(0); + tp += seconds(5); + EXPECT_EQ("05", format("%E*S", tp, tz)); + EXPECT_EQ("05", format("%E0S", tp, tz)); + EXPECT_EQ("05.0", format("%E1S", tp, tz)); + EXPECT_EQ("05.00", format("%E2S", tp, tz)); + EXPECT_EQ("05.000", format("%E3S", tp, tz)); + EXPECT_EQ("05.0000", format("%E4S", tp, tz)); + EXPECT_EQ("05.00000", format("%E5S", tp, tz)); + EXPECT_EQ("05.000000", format("%E6S", tp, tz)); + EXPECT_EQ("05.0000000", format("%E7S", tp, tz)); + EXPECT_EQ("05.00000000", format("%E8S", tp, tz)); + EXPECT_EQ("05.000000000", format("%E9S", tp, tz)); + EXPECT_EQ("05.0000000000", format("%E10S", tp, tz)); + EXPECT_EQ("05.00000000000", format("%E11S", tp, tz)); + EXPECT_EQ("05.000000000000", format("%E12S", tp, tz)); + EXPECT_EQ("05.0000000000000", format("%E13S", tp, tz)); + EXPECT_EQ("05.00000000000000", format("%E14S", tp, tz)); + EXPECT_EQ("05.000000000000000", format("%E15S", tp, tz)); + + // With subseconds. + tp += milliseconds(6) + microseconds(7) + nanoseconds(8); + EXPECT_EQ("05.006007008", format("%E*S", tp, tz)); + EXPECT_EQ("05", format("%E0S", tp, tz)); + EXPECT_EQ("05.0", format("%E1S", tp, tz)); + EXPECT_EQ("05.00", format("%E2S", tp, tz)); + EXPECT_EQ("05.006", format("%E3S", tp, tz)); + EXPECT_EQ("05.0060", format("%E4S", tp, tz)); + EXPECT_EQ("05.00600", format("%E5S", tp, tz)); + EXPECT_EQ("05.006007", format("%E6S", tp, tz)); + EXPECT_EQ("05.0060070", format("%E7S", tp, tz)); + EXPECT_EQ("05.00600700", format("%E8S", tp, tz)); + EXPECT_EQ("05.006007008", format("%E9S", tp, tz)); + EXPECT_EQ("05.0060070080", format("%E10S", tp, tz)); + EXPECT_EQ("05.00600700800", format("%E11S", tp, tz)); + EXPECT_EQ("05.006007008000", format("%E12S", tp, tz)); + EXPECT_EQ("05.0060070080000", format("%E13S", tp, tz)); + EXPECT_EQ("05.00600700800000", format("%E14S", tp, tz)); + EXPECT_EQ("05.006007008000000", format("%E15S", tp, tz)); + + // Times before the Unix epoch. + tp = system_clock::from_time_t(0) + microseconds(-1); + EXPECT_EQ("1969-12-31 23:59:59.999999", + format("%Y-%m-%d %H:%M:%E*S", tp, tz)); + + // Here is a "%E*S" case we got wrong for a while. While the first + // instant below is correctly rendered as "...:07.333304", the second + // one used to appear as "...:07.33330499999999999". + tp = system_clock::from_time_t(0) + microseconds(1395024427333304); + EXPECT_EQ("2014-03-17 02:47:07.333304", + format("%Y-%m-%d %H:%M:%E*S", tp, tz)); + tp += microseconds(1); + EXPECT_EQ("2014-03-17 02:47:07.333305", + format("%Y-%m-%d %H:%M:%E*S", tp, tz)); +} + +TEST(Format, ExtendedSubeconds) { + const time_zone tz = utc_time_zone(); + + // No subseconds. + time_point<nanoseconds> tp = system_clock::from_time_t(0); + tp += seconds(5); + EXPECT_EQ("0", format("%E*f", tp, tz)); + EXPECT_EQ("", format("%E0f", tp, tz)); + EXPECT_EQ("0", format("%E1f", tp, tz)); + EXPECT_EQ("00", format("%E2f", tp, tz)); + EXPECT_EQ("000", format("%E3f", tp, tz)); + EXPECT_EQ("0000", format("%E4f", tp, tz)); + EXPECT_EQ("00000", format("%E5f", tp, tz)); + EXPECT_EQ("000000", format("%E6f", tp, tz)); + EXPECT_EQ("0000000", format("%E7f", tp, tz)); + EXPECT_EQ("00000000", format("%E8f", tp, tz)); + EXPECT_EQ("000000000", format("%E9f", tp, tz)); + EXPECT_EQ("0000000000", format("%E10f", tp, tz)); + EXPECT_EQ("00000000000", format("%E11f", tp, tz)); + EXPECT_EQ("000000000000", format("%E12f", tp, tz)); + EXPECT_EQ("0000000000000", format("%E13f", tp, tz)); + EXPECT_EQ("00000000000000", format("%E14f", tp, tz)); + EXPECT_EQ("000000000000000", format("%E15f", tp, tz)); + + // With subseconds. + tp += milliseconds(6) + microseconds(7) + nanoseconds(8); + EXPECT_EQ("006007008", format("%E*f", tp, tz)); + EXPECT_EQ("", format("%E0f", tp, tz)); + EXPECT_EQ("0", format("%E1f", tp, tz)); + EXPECT_EQ("00", format("%E2f", tp, tz)); + EXPECT_EQ("006", format("%E3f", tp, tz)); + EXPECT_EQ("0060", format("%E4f", tp, tz)); + EXPECT_EQ("00600", format("%E5f", tp, tz)); + EXPECT_EQ("006007", format("%E6f", tp, tz)); + EXPECT_EQ("0060070", format("%E7f", tp, tz)); + EXPECT_EQ("00600700", format("%E8f", tp, tz)); + EXPECT_EQ("006007008", format("%E9f", tp, tz)); + EXPECT_EQ("0060070080", format("%E10f", tp, tz)); + EXPECT_EQ("00600700800", format("%E11f", tp, tz)); + EXPECT_EQ("006007008000", format("%E12f", tp, tz)); + EXPECT_EQ("0060070080000", format("%E13f", tp, tz)); + EXPECT_EQ("00600700800000", format("%E14f", tp, tz)); + EXPECT_EQ("006007008000000", format("%E15f", tp, tz)); + + // Times before the Unix epoch. + tp = system_clock::from_time_t(0) + microseconds(-1); + EXPECT_EQ("1969-12-31 23:59:59.999999", + format("%Y-%m-%d %H:%M:%S.%E*f", tp, tz)); + + // Here is a "%E*S" case we got wrong for a while. While the first + // instant below is correctly rendered as "...:07.333304", the second + // one used to appear as "...:07.33330499999999999". + tp = system_clock::from_time_t(0) + microseconds(1395024427333304); + EXPECT_EQ("2014-03-17 02:47:07.333304", + format("%Y-%m-%d %H:%M:%S.%E*f", tp, tz)); + tp += microseconds(1); + EXPECT_EQ("2014-03-17 02:47:07.333305", + format("%Y-%m-%d %H:%M:%S.%E*f", tp, tz)); +} + +TEST(Format, CompareExtendSecondsVsSubseconds) { + const time_zone tz = utc_time_zone(); + + // This test case illustrates the differences/similarities between: + // fmt_A: %E<prec>S + // fmt_B: %S.%E<prec>f + auto fmt_A = [](const std::string& prec) { return "%E" + prec + "S"; }; + auto fmt_B = [](const std::string& prec) { return "%S.%E" + prec + "f"; }; + + // No subseconds: + time_point<nanoseconds> tp = system_clock::from_time_t(0); + tp += seconds(5); + // ... %E*S and %S.%E*f are different. + EXPECT_EQ("05", format(fmt_A("*"), tp, tz)); + EXPECT_EQ("05.0", format(fmt_B("*"), tp, tz)); + // ... %E0S and %S.%E0f are different. + EXPECT_EQ("05", format(fmt_A("0"), tp, tz)); + EXPECT_EQ("05.", format(fmt_B("0"), tp, tz)); + // ... %E<prec>S and %S.%E<prec>f are the same for prec in [1:15]. + for (int prec = 1; prec <= 15; ++prec) { + const std::string a = format(fmt_A(std::to_string(prec)), tp, tz); + const std::string b = format(fmt_B(std::to_string(prec)), tp, tz); + EXPECT_EQ(a, b) << "prec=" << prec; + } + + // With subseconds: + // ... %E*S and %S.%E*f are the same. + tp += milliseconds(6) + microseconds(7) + nanoseconds(8); + EXPECT_EQ("05.006007008", format(fmt_A("*"), tp, tz)); + EXPECT_EQ("05.006007008", format(fmt_B("*"), tp, tz)); + // ... %E0S and %S.%E0f are different. + EXPECT_EQ("05", format(fmt_A("0"), tp, tz)); + EXPECT_EQ("05.", format(fmt_B("0"), tp, tz)); + // ... %E<prec>S and %S.%E<prec>f are the same for prec in [1:15]. + for (int prec = 1; prec <= 15; ++prec) { + const std::string a = format(fmt_A(std::to_string(prec)), tp, tz); + const std::string b = format(fmt_B(std::to_string(prec)), tp, tz); + EXPECT_EQ(a, b) << "prec=" << prec; + } +} + +TEST(Format, ExtendedOffset) { + auto tp = system_clock::from_time_t(0); + + time_zone tz = utc_time_zone(); + TestFormatSpecifier(tp, tz, "%Ez", "+00:00"); + + EXPECT_TRUE(load_time_zone("America/New_York", &tz)); + TestFormatSpecifier(tp, tz, "%Ez", "-05:00"); + + EXPECT_TRUE(load_time_zone("America/Los_Angeles", &tz)); + TestFormatSpecifier(tp, tz, "%Ez", "-08:00"); + + EXPECT_TRUE(load_time_zone("Australia/Sydney", &tz)); + TestFormatSpecifier(tp, tz, "%Ez", "+10:00"); + + EXPECT_TRUE(load_time_zone("Africa/Monrovia", &tz)); + // The true offset is -00:44:30 but %z only gives (truncated) minutes. + TestFormatSpecifier(tp, tz, "%z", "-0044"); + TestFormatSpecifier(tp, tz, "%Ez", "-00:44"); +} + +TEST(Format, ExtendedSecondOffset) { + const time_zone utc = utc_time_zone(); + time_point<seconds> tp; + time_zone tz; + + EXPECT_TRUE(load_time_zone("America/New_York", &tz)); + tp = convert(civil_second(1883, 11, 18, 16, 59, 59), utc); + if (tz.lookup(tp).offset == -5 * 60 * 60) { + // We're likely dealing with zoneinfo that doesn't support really old + // timestamps, so America/New_York never looks to be on local mean time. + } else { + TestFormatSpecifier(tp, tz, "%E*z", "-04:56:02"); + TestFormatSpecifier(tp, tz, "%Ez", "-04:56"); + } + tp += seconds(1); + TestFormatSpecifier(tp, tz, "%E*z", "-05:00:00"); + + EXPECT_TRUE(load_time_zone("Europe/Moscow", &tz)); + tp = convert(civil_second(1919, 6, 30, 23, 59, 59), utc); + TestFormatSpecifier(tp, tz, "%E*z", "+04:31:19"); + TestFormatSpecifier(tp, tz, "%Ez", "+04:31"); + tp += seconds(1); + TestFormatSpecifier(tp, tz, "%E*z", "+04:00:00"); +} + +TEST(Format, ExtendedYears) { + const time_zone utc = utc_time_zone(); + const char e4y_fmt[] = "%E4Y%m%d"; // no separators + + // %E4Y zero-pads the year to produce at least 4 chars, including the sign. + auto tp = convert(civil_second(-999, 11, 27, 0, 0, 0), utc); + EXPECT_EQ("-9991127", format(e4y_fmt, tp, utc)); + tp = convert(civil_second(-99, 11, 27, 0, 0, 0), utc); + EXPECT_EQ("-0991127", format(e4y_fmt, tp, utc)); + tp = convert(civil_second(-9, 11, 27, 0, 0, 0), utc); + EXPECT_EQ("-0091127", format(e4y_fmt, tp, utc)); + tp = convert(civil_second(-1, 11, 27, 0, 0, 0), utc); + EXPECT_EQ("-0011127", format(e4y_fmt, tp, utc)); + tp = convert(civil_second(0, 11, 27, 0, 0, 0), utc); + EXPECT_EQ("00001127", format(e4y_fmt, tp, utc)); + tp = convert(civil_second(1, 11, 27, 0, 0, 0), utc); + EXPECT_EQ("00011127", format(e4y_fmt, tp, utc)); + tp = convert(civil_second(9, 11, 27, 0, 0, 0), utc); + EXPECT_EQ("00091127", format(e4y_fmt, tp, utc)); + tp = convert(civil_second(99, 11, 27, 0, 0, 0), utc); + EXPECT_EQ("00991127", format(e4y_fmt, tp, utc)); + tp = convert(civil_second(999, 11, 27, 0, 0, 0), utc); + EXPECT_EQ("09991127", format(e4y_fmt, tp, utc)); + tp = convert(civil_second(9999, 11, 27, 0, 0, 0), utc); + EXPECT_EQ("99991127", format(e4y_fmt, tp, utc)); + + // When the year is outside [-999:9999], more than 4 chars are produced. + tp = convert(civil_second(-1000, 11, 27, 0, 0, 0), utc); + EXPECT_EQ("-10001127", format(e4y_fmt, tp, utc)); + tp = convert(civil_second(10000, 11, 27, 0, 0, 0), utc); + EXPECT_EQ("100001127", format(e4y_fmt, tp, utc)); +} + +TEST(Format, RFC3339Format) { + time_zone tz; + EXPECT_TRUE(load_time_zone("America/Los_Angeles", &tz)); + + time_point<nanoseconds> tp = + convert(civil_second(1977, 6, 28, 9, 8, 7), tz); + EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_full, tp, tz)); + EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_sec, tp, tz)); + + tp += milliseconds(100); + EXPECT_EQ("1977-06-28T09:08:07.1-07:00", format(RFC3339_full, tp, tz)); + EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_sec, tp, tz)); + + tp += milliseconds(20); + EXPECT_EQ("1977-06-28T09:08:07.12-07:00", format(RFC3339_full, tp, tz)); + EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_sec, tp, tz)); + + tp += milliseconds(3); + EXPECT_EQ("1977-06-28T09:08:07.123-07:00", format(RFC3339_full, tp, tz)); + EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_sec, tp, tz)); + + tp += microseconds(400); + EXPECT_EQ("1977-06-28T09:08:07.1234-07:00", format(RFC3339_full, tp, tz)); + EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_sec, tp, tz)); + + tp += microseconds(50); + EXPECT_EQ("1977-06-28T09:08:07.12345-07:00", format(RFC3339_full, tp, tz)); + EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_sec, tp, tz)); + + tp += microseconds(6); + EXPECT_EQ("1977-06-28T09:08:07.123456-07:00", format(RFC3339_full, tp, tz)); + EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_sec, tp, tz)); + + tp += nanoseconds(700); + EXPECT_EQ("1977-06-28T09:08:07.1234567-07:00", format(RFC3339_full, tp, tz)); + EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_sec, tp, tz)); + + tp += nanoseconds(80); + EXPECT_EQ("1977-06-28T09:08:07.12345678-07:00", format(RFC3339_full, tp, tz)); + EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_sec, tp, tz)); + + tp += nanoseconds(9); + EXPECT_EQ("1977-06-28T09:08:07.123456789-07:00", + format(RFC3339_full, tp, tz)); + EXPECT_EQ("1977-06-28T09:08:07-07:00", format(RFC3339_sec, tp, tz)); +} + +TEST(Format, RFC1123Format) { // locale specific + time_zone tz; + EXPECT_TRUE(load_time_zone("America/Los_Angeles", &tz)); + + auto tp = convert(civil_second(1977, 6, 28, 9, 8, 7), tz); + EXPECT_EQ("Tue, 28 Jun 1977 09:08:07 -0700", format(RFC1123_full, tp, tz)); + EXPECT_EQ("28 Jun 1977 09:08:07 -0700", format(RFC1123_no_wday, tp, tz)); +} + +// +// Testing parse() +// + +TEST(Parse, TimePointResolution) { + const char kFmt[] = "%H:%M:%E*S"; + const time_zone utc = utc_time_zone(); + + time_point<nanoseconds> tp_ns; + EXPECT_TRUE(parse(kFmt, "03:04:05.123456789", utc, &tp_ns)); + EXPECT_EQ("03:04:05.123456789", format(kFmt, tp_ns, utc)); + EXPECT_TRUE(parse(kFmt, "03:04:05.123456", utc, &tp_ns)); + EXPECT_EQ("03:04:05.123456", format(kFmt, tp_ns, utc)); + + time_point<microseconds> tp_us; + EXPECT_TRUE(parse(kFmt, "03:04:05.123456789", utc, &tp_us)); + EXPECT_EQ("03:04:05.123456", format(kFmt, tp_us, utc)); + EXPECT_TRUE(parse(kFmt, "03:04:05.123456", utc, &tp_us)); + EXPECT_EQ("03:04:05.123456", format(kFmt, tp_us, utc)); + EXPECT_TRUE(parse(kFmt, "03:04:05.123", utc, &tp_us)); + EXPECT_EQ("03:04:05.123", format(kFmt, tp_us, utc)); + + time_point<milliseconds> tp_ms; + EXPECT_TRUE(parse(kFmt, "03:04:05.123456", utc, &tp_ms)); + EXPECT_EQ("03:04:05.123", format(kFmt, tp_ms, utc)); + EXPECT_TRUE(parse(kFmt, "03:04:05.123", utc, &tp_ms)); + EXPECT_EQ("03:04:05.123", format(kFmt, tp_ms, utc)); + EXPECT_TRUE(parse(kFmt, "03:04:05", utc, &tp_ms)); + EXPECT_EQ("03:04:05", format(kFmt, tp_ms, utc)); + + time_point<seconds> tp_s; + EXPECT_TRUE(parse(kFmt, "03:04:05.123", utc, &tp_s)); + EXPECT_EQ("03:04:05", format(kFmt, tp_s, utc)); + EXPECT_TRUE(parse(kFmt, "03:04:05", utc, &tp_s)); + EXPECT_EQ("03:04:05", format(kFmt, tp_s, utc)); + + time_point<minutes> tp_m; + EXPECT_TRUE(parse(kFmt, "03:04:05", utc, &tp_m)); + EXPECT_EQ("03:04:00", format(kFmt, tp_m, utc)); + + time_point<hours> tp_h; + EXPECT_TRUE(parse(kFmt, "03:04:05", utc, &tp_h)); + EXPECT_EQ("03:00:00", format(kFmt, tp_h, utc)); +} + +TEST(Parse, TimePointExtendedResolution) { + const char kFmt[] = "%H:%M:%E*S"; + const time_zone utc = utc_time_zone(); + + time_point<sys_seconds> tp; + detail::femtoseconds fs; + EXPECT_TRUE(detail::parse(kFmt, "12:34:56.123456789012345", utc, &tp, &fs)); + EXPECT_EQ("12:34:56.123456789012345", detail::format(kFmt, tp, fs, utc)); + EXPECT_TRUE(detail::parse(kFmt, "12:34:56.012345678901234", utc, &tp, &fs)); + EXPECT_EQ("12:34:56.012345678901234", detail::format(kFmt, tp, fs, utc)); + EXPECT_TRUE(detail::parse(kFmt, "12:34:56.001234567890123", utc, &tp, &fs)); + EXPECT_EQ("12:34:56.001234567890123", detail::format(kFmt, tp, fs, utc)); + EXPECT_TRUE(detail::parse(kFmt, "12:34:56.000000000000123", utc, &tp, &fs)); + EXPECT_EQ("12:34:56.000000000000123", detail::format(kFmt, tp, fs, utc)); + EXPECT_TRUE(detail::parse(kFmt, "12:34:56.000000000000012", utc, &tp, &fs)); + EXPECT_EQ("12:34:56.000000000000012", detail::format(kFmt, tp, fs, utc)); + EXPECT_TRUE(detail::parse(kFmt, "12:34:56.000000000000001", utc, &tp, &fs)); + EXPECT_EQ("12:34:56.000000000000001", detail::format(kFmt, tp, fs, utc)); +} + +TEST(Parse, Basics) { + time_zone tz = utc_time_zone(); + time_point<nanoseconds> tp = system_clock::from_time_t(1234567890); + + // Simple edge cases. + EXPECT_TRUE(parse("", "", tz, &tp)); + EXPECT_EQ(system_clock::from_time_t(0), tp); // everything defaulted + EXPECT_TRUE(parse(" ", " ", tz, &tp)); + EXPECT_TRUE(parse(" ", " ", tz, &tp)); + EXPECT_TRUE(parse("x", "x", tz, &tp)); + EXPECT_TRUE(parse("xxx", "xxx", tz, &tp)); + + EXPECT_TRUE( + parse("%Y-%m-%d %H:%M:%S %z", "2013-06-28 19:08:09 -0800", tz, &tp)); + ExpectTime(tp, tz, 2013, 6, 29, 3, 8, 9, 0, false, "UTC"); +} + +TEST(Parse, WithTimeZone) { + time_zone tz; + EXPECT_TRUE(load_time_zone("America/Los_Angeles", &tz)); + time_point<nanoseconds> tp; + + // We can parse a std::string without a UTC offset if we supply a timezone. + EXPECT_TRUE(parse("%Y-%m-%d %H:%M:%S", "2013-06-28 19:08:09", tz, &tp)); + ExpectTime(tp, tz, 2013, 6, 28, 19, 8, 9, -7 * 60 * 60, true, "PDT"); + + // But the timezone is ignored when a UTC offset is present. + EXPECT_TRUE(parse("%Y-%m-%d %H:%M:%S %z", "2013-06-28 19:08:09 +0800", + utc_time_zone(), &tp)); + ExpectTime(tp, tz, 2013, 6, 28, 19 - 8 - 7, 8, 9, -7 * 60 * 60, true, "PDT"); + + // Check a skipped time (a Spring DST transition). parse() returns + // the preferred-offset result, as defined for ConvertDateTime(). + EXPECT_TRUE(parse("%Y-%m-%d %H:%M:%S", "2011-03-13 02:15:00", tz, &tp)); + ExpectTime(tp, tz, 2011, 3, 13, 3, 15, 0, -7 * 60 * 60, true, "PDT"); + + // Check a repeated time (a Fall DST transition). parse() returns + // the preferred-offset result, as defined for ConvertDateTime(). + EXPECT_TRUE(parse("%Y-%m-%d %H:%M:%S", "2011-11-06 01:15:00", tz, &tp)); + ExpectTime(tp, tz, 2011, 11, 6, 1, 15, 0, -7 * 60 * 60, true, "PDT"); +} + +TEST(Parse, LeapSecond) { + time_zone tz; + EXPECT_TRUE(load_time_zone("America/Los_Angeles", &tz)); + time_point<nanoseconds> tp; + + // ":59" -> ":59" + EXPECT_TRUE(parse(RFC3339_full, "2013-06-28T07:08:59-08:00", tz, &tp)); + ExpectTime(tp, tz, 2013, 6, 28, 8, 8, 59, -7 * 60 * 60, true, "PDT"); + + // ":59.5" -> ":59.5" + EXPECT_TRUE(parse(RFC3339_full, "2013-06-28T07:08:59.5-08:00", tz, &tp)); + ExpectTime(tp, tz, 2013, 6, 28, 8, 8, 59, -7 * 60 * 60, true, "PDT"); + + // ":60" -> ":00" + EXPECT_TRUE(parse(RFC3339_full, "2013-06-28T07:08:60-08:00", tz, &tp)); + ExpectTime(tp, tz, 2013, 6, 28, 8, 9, 0, -7 * 60 * 60, true, "PDT"); + + // ":60.5" -> ":00.0" + EXPECT_TRUE(parse(RFC3339_full, "2013-06-28T07:08:60.5-08:00", tz, &tp)); + ExpectTime(tp, tz, 2013, 6, 28, 8, 9, 0, -7 * 60 * 60, true, "PDT"); + + // ":61" -> error + EXPECT_FALSE(parse(RFC3339_full, "2013-06-28T07:08:61-08:00", tz, &tp)); +} + +TEST(Parse, ErrorCases) { + const time_zone tz = utc_time_zone(); + auto tp = system_clock::from_time_t(0); + + // Illegal trailing data. + EXPECT_FALSE(parse("%S", "123", tz, &tp)); + + // Can't parse an illegal format specifier. + EXPECT_FALSE(parse("%Q", "x", tz, &tp)); + + // Fails because of trailing, unparsed data "blah". + EXPECT_FALSE(parse("%m-%d", "2-3 blah", tz, &tp)); + + // Trailing whitespace is allowed. + EXPECT_TRUE(parse("%m-%d", "2-3 ", tz, &tp)); + EXPECT_EQ(2, convert(tp, utc_time_zone()).month()); + EXPECT_EQ(3, convert(tp, utc_time_zone()).day()); + + // Feb 31 requires normalization. + EXPECT_FALSE(parse("%m-%d", "2-31", tz, &tp)); + + // Check that we cannot have spaces in UTC offsets. + EXPECT_TRUE(parse("%z", "-0203", tz, &tp)); + EXPECT_FALSE(parse("%z", "- 2 3", tz, &tp)); + EXPECT_TRUE(parse("%Ez", "-02:03", tz, &tp)); + EXPECT_FALSE(parse("%Ez", "- 2: 3", tz, &tp)); + + // Check that we reject other malformed UTC offsets. + EXPECT_FALSE(parse("%Ez", "+-08:00", tz, &tp)); + EXPECT_FALSE(parse("%Ez", "-+08:00", tz, &tp)); + + // Check that we do not accept "-0" in fields that allow zero. + EXPECT_FALSE(parse("%Y", "-0", tz, &tp)); + EXPECT_FALSE(parse("%E4Y", "-0", tz, &tp)); + EXPECT_FALSE(parse("%H", "-0", tz, &tp)); + EXPECT_FALSE(parse("%M", "-0", tz, &tp)); + EXPECT_FALSE(parse("%S", "-0", tz, &tp)); + EXPECT_FALSE(parse("%z", "+-000", tz, &tp)); + EXPECT_FALSE(parse("%Ez", "+-0:00", tz, &tp)); + EXPECT_FALSE(parse("%z", "-00-0", tz, &tp)); + EXPECT_FALSE(parse("%Ez", "-00:-0", tz, &tp)); +} + +TEST(Parse, PosixConversions) { + time_zone tz = utc_time_zone(); + auto tp = system_clock::from_time_t(0); + const auto reset = convert(civil_second(1977, 6, 28, 9, 8, 7), tz); + + tp = reset; + EXPECT_TRUE(parse("%d", "15", tz, &tp)); + EXPECT_EQ(15, convert(tp, tz).day()); + + // %e is an extension, but is supported internally. + tp = reset; + EXPECT_TRUE(parse("%e", "15", tz, &tp)); + EXPECT_EQ(15, convert(tp, tz).day()); // Equivalent to %d + + tp = reset; + EXPECT_TRUE(parse("%H", "17", tz, &tp)); + EXPECT_EQ(17, convert(tp, tz).hour()); + + tp = reset; + EXPECT_TRUE(parse("%I", "5", tz, &tp)); + EXPECT_EQ(5, convert(tp, tz).hour()); + + // %j is parsed but ignored. + EXPECT_TRUE(parse("%j", "32", tz, &tp)); + + tp = reset; + EXPECT_TRUE(parse("%m", "11", tz, &tp)); + EXPECT_EQ(11, convert(tp, tz).month()); + + tp = reset; + EXPECT_TRUE(parse("%M", "33", tz, &tp)); + EXPECT_EQ(33, convert(tp, tz).minute()); + + tp = reset; + EXPECT_TRUE(parse("%S", "55", tz, &tp)); + EXPECT_EQ(55, convert(tp, tz).second()); + + // %U is parsed but ignored. + EXPECT_TRUE(parse("%U", "15", tz, &tp)); + + // %w is parsed but ignored. + EXPECT_TRUE(parse("%w", "2", tz, &tp)); + + // %W is parsed but ignored. + EXPECT_TRUE(parse("%W", "22", tz, &tp)); + + tp = reset; + EXPECT_TRUE(parse("%y", "04", tz, &tp)); + EXPECT_EQ(2004, convert(tp, tz).year()); + + tp = reset; + EXPECT_TRUE(parse("%Y", "2004", tz, &tp)); + EXPECT_EQ(2004, convert(tp, tz).year()); + + EXPECT_TRUE(parse("%%", "%", tz, &tp)); + +#if defined(__linux__) + // SU/C99/TZ extensions + + // Because we handle each (non-internal) specifier in a separate call + // to strptime(), there is no way to group %C and %y together. So we + // just skip the %C/%y case. +#if 0 + tp = reset; + EXPECT_TRUE(parse("%C %y", "20 04", tz, &tp)); + EXPECT_EQ(2004, convert(tp, tz).year()); +#endif + + tp = reset; + EXPECT_TRUE(parse("%D", "02/03/04", tz, &tp)); + EXPECT_EQ(2, convert(tp, tz).month()); + EXPECT_EQ(3, convert(tp, tz).day()); + EXPECT_EQ(2004, convert(tp, tz).year()); + + EXPECT_TRUE(parse("%n", "\n", tz, &tp)); + + tp = reset; + EXPECT_TRUE(parse("%R", "03:44", tz, &tp)); + EXPECT_EQ(3, convert(tp, tz).hour()); + EXPECT_EQ(44, convert(tp, tz).minute()); + + EXPECT_TRUE(parse("%t", "\t\v\f\n\r ", tz, &tp)); + + tp = reset; + EXPECT_TRUE(parse("%T", "03:44:55", tz, &tp)); + EXPECT_EQ(3, convert(tp, tz).hour()); + EXPECT_EQ(44, convert(tp, tz).minute()); + EXPECT_EQ(55, convert(tp, tz).second()); + + tp = reset; + EXPECT_TRUE(parse("%s", "1234567890", tz, &tp)); + EXPECT_EQ(system_clock::from_time_t(1234567890), tp); + + // %s conversion, like %z/%Ez, pays no heed to the optional zone. + time_zone lax; + EXPECT_TRUE(load_time_zone("America/Los_Angeles", &lax)); + tp = reset; + EXPECT_TRUE(parse("%s", "1234567890", lax, &tp)); + EXPECT_EQ(system_clock::from_time_t(1234567890), tp); + + // This is most important when the time has the same YMDhms + // breakdown in the zone as some other time. For example, ... + // 1414917000 in US/Pacific -> Sun Nov 2 01:30:00 2014 (PDT) + // 1414920600 in US/Pacific -> Sun Nov 2 01:30:00 2014 (PST) + tp = reset; + EXPECT_TRUE(parse("%s", "1414917000", lax, &tp)); + EXPECT_EQ(system_clock::from_time_t(1414917000), tp); + tp = reset; + EXPECT_TRUE(parse("%s", "1414920600", lax, &tp)); + EXPECT_EQ(system_clock::from_time_t(1414920600), tp); +#endif +} + +TEST(Parse, LocaleSpecific) { + time_zone tz = utc_time_zone(); + auto tp = system_clock::from_time_t(0); + const auto reset = convert(civil_second(1977, 6, 28, 9, 8, 7), tz); + + // %a is parsed but ignored. + EXPECT_TRUE(parse("%a", "Mon", tz, &tp)); + + // %A is parsed but ignored. + EXPECT_TRUE(parse("%A", "Monday", tz, &tp)); + + tp = reset; + EXPECT_TRUE(parse("%b", "Feb", tz, &tp)); + EXPECT_EQ(2, convert(tp, tz).month()); + + tp = reset; + EXPECT_TRUE(parse("%B", "February", tz, &tp)); + EXPECT_EQ(2, convert(tp, tz).month()); + + // %p is parsed but ignored if it's alone. But it's used with %I. + EXPECT_TRUE(parse("%p", "AM", tz, &tp)); + tp = reset; + EXPECT_TRUE(parse("%I %p", "5 PM", tz, &tp)); + EXPECT_EQ(17, convert(tp, tz).hour()); + + tp = reset; + EXPECT_TRUE(parse("%x", "02/03/04", tz, &tp)); + if (convert(tp, tz).month() == 2) { + EXPECT_EQ(3, convert(tp, tz).day()); + } else { + EXPECT_EQ(2, convert(tp, tz).day()); + EXPECT_EQ(3, convert(tp, tz).month()); + } + EXPECT_EQ(2004, convert(tp, tz).year()); + + tp = reset; + EXPECT_TRUE(parse("%X", "15:44:55", tz, &tp)); + EXPECT_EQ(15, convert(tp, tz).hour()); + EXPECT_EQ(44, convert(tp, tz).minute()); + EXPECT_EQ(55, convert(tp, tz).second()); + +#if defined(__linux__) + // SU/C99/TZ extensions + + tp = reset; + EXPECT_TRUE(parse("%h", "Feb", tz, &tp)); + EXPECT_EQ(2, convert(tp, tz).month()); // Equivalent to %b + + tp = reset; + EXPECT_TRUE(parse("%l %p", "5 PM", tz, &tp)); + EXPECT_EQ(17, convert(tp, tz).hour()); + + tp = reset; + EXPECT_TRUE(parse("%r", "03:44:55 PM", tz, &tp)); + EXPECT_EQ(15, convert(tp, tz).hour()); + EXPECT_EQ(44, convert(tp, tz).minute()); + EXPECT_EQ(55, convert(tp, tz).second()); + + tp = reset; + EXPECT_TRUE(parse("%Ec", "Tue Nov 19 05:06:07 2013", tz, &tp)); + EXPECT_EQ(convert(civil_second(2013, 11, 19, 5, 6, 7), tz), tp); + + // Modified conversion specifiers %E_ + + tp = reset; + EXPECT_TRUE(parse("%Ex", "02/03/04", tz, &tp)); + EXPECT_EQ(2, convert(tp, tz).month()); + EXPECT_EQ(3, convert(tp, tz).day()); + EXPECT_EQ(2004, convert(tp, tz).year()); + + tp = reset; + EXPECT_TRUE(parse("%EX", "15:44:55", tz, &tp)); + EXPECT_EQ(15, convert(tp, tz).hour()); + EXPECT_EQ(44, convert(tp, tz).minute()); + EXPECT_EQ(55, convert(tp, tz).second()); + + // %Ey, the year offset from %EC, doesn't really make sense alone as there + // is no way to represent it in tm_year (%EC is not simply the century). + // Yet, because we handle each (non-internal) specifier in a separate call + // to strptime(), there is no way to group %EC and %Ey either. So we just + // skip the %EC and %Ey cases. + + tp = reset; + EXPECT_TRUE(parse("%EY", "2004", tz, &tp)); + EXPECT_EQ(2004, convert(tp, tz).year()); + + // Modified conversion specifiers %O_ + + tp = reset; + EXPECT_TRUE(parse("%Od", "15", tz, &tp)); + EXPECT_EQ(15, convert(tp, tz).day()); + + tp = reset; + EXPECT_TRUE(parse("%Oe", "15", tz, &tp)); + EXPECT_EQ(15, convert(tp, tz).day()); // Equivalent to %d + + tp = reset; + EXPECT_TRUE(parse("%OH", "17", tz, &tp)); + EXPECT_EQ(17, convert(tp, tz).hour()); + + tp = reset; + EXPECT_TRUE(parse("%OI", "5", tz, &tp)); + EXPECT_EQ(5, convert(tp, tz).hour()); + + tp = reset; + EXPECT_TRUE(parse("%Om", "11", tz, &tp)); + EXPECT_EQ(11, convert(tp, tz).month()); + + tp = reset; + EXPECT_TRUE(parse("%OM", "33", tz, &tp)); + EXPECT_EQ(33, convert(tp, tz).minute()); + + tp = reset; + EXPECT_TRUE(parse("%OS", "55", tz, &tp)); + EXPECT_EQ(55, convert(tp, tz).second()); + + // %OU is parsed but ignored. + EXPECT_TRUE(parse("%OU", "15", tz, &tp)); + + // %Ow is parsed but ignored. + EXPECT_TRUE(parse("%Ow", "2", tz, &tp)); + + // %OW is parsed but ignored. + EXPECT_TRUE(parse("%OW", "22", tz, &tp)); + + tp = reset; + EXPECT_TRUE(parse("%Oy", "04", tz, &tp)); + EXPECT_EQ(2004, convert(tp, tz).year()); +#endif +} + +TEST(Parse, ExtendedSeconds) { + const time_zone tz = utc_time_zone(); + const time_point<nanoseconds> unix_epoch = system_clock::from_time_t(0); + + // All %E<prec>S cases are treated the same as %E*S on input. + auto precisions = {"*", "0", "1", "2", "3", "4", "5", "6", "7", + "8", "9", "10", "11", "12", "13", "14", "15"}; + for (const std::string& prec : precisions) { + const std::string fmt = "%E" + prec + "S"; + SCOPED_TRACE(fmt); + time_point<nanoseconds> tp = unix_epoch; + EXPECT_TRUE(parse(fmt, "5", tz, &tp)); + EXPECT_EQ(unix_epoch + seconds(5), tp); + tp = unix_epoch; + EXPECT_TRUE(parse(fmt, "05", tz, &tp)); + EXPECT_EQ(unix_epoch + seconds(5), tp); + tp = unix_epoch; + EXPECT_TRUE(parse(fmt, "05.0", tz, &tp)); + EXPECT_EQ(unix_epoch + seconds(5), tp); + tp = unix_epoch; + EXPECT_TRUE(parse(fmt, "05.00", tz, &tp)); + EXPECT_EQ(unix_epoch + seconds(5), tp); + tp = unix_epoch; + EXPECT_TRUE(parse(fmt, "05.6", tz, &tp)); + EXPECT_EQ(unix_epoch + seconds(5) + milliseconds(600), tp); + tp = unix_epoch; + EXPECT_TRUE(parse(fmt, "05.60", tz, &tp)); + EXPECT_EQ(unix_epoch + seconds(5) + milliseconds(600), tp); + tp = unix_epoch; + EXPECT_TRUE(parse(fmt, "05.600", tz, &tp)); + EXPECT_EQ(unix_epoch + seconds(5) + milliseconds(600), tp); + tp = unix_epoch; + EXPECT_TRUE(parse(fmt, "05.67", tz, &tp)); + EXPECT_EQ(unix_epoch + seconds(5) + milliseconds(670), tp); + tp = unix_epoch; + EXPECT_TRUE(parse(fmt, "05.670", tz, &tp)); + EXPECT_EQ(unix_epoch + seconds(5) + milliseconds(670), tp); + tp = unix_epoch; + EXPECT_TRUE(parse(fmt, "05.678", tz, &tp)); + EXPECT_EQ(unix_epoch + seconds(5) + milliseconds(678), tp); + } + + // Here is a "%E*S" case we got wrong for a while. The fractional + // part of the first instant is less than 2^31 and was correctly + // parsed, while the second (and any subsecond field >=2^31) failed. + time_point<nanoseconds> tp = unix_epoch; + EXPECT_TRUE(parse("%E*S", "0.2147483647", tz, &tp)); + EXPECT_EQ(unix_epoch + nanoseconds(214748364), tp); + tp = unix_epoch; + EXPECT_TRUE(parse("%E*S", "0.2147483648", tz, &tp)); + EXPECT_EQ(unix_epoch + nanoseconds(214748364), tp); + + // We should also be able to specify long strings of digits far + // beyond the current resolution and have them convert the same way. + tp = unix_epoch; + EXPECT_TRUE(parse( + "%E*S", "0.214748364801234567890123456789012345678901234567890123456789", + tz, &tp)); + EXPECT_EQ(unix_epoch + nanoseconds(214748364), tp); +} + +TEST(Parse, ExtendedSecondsScan) { + const time_zone tz = utc_time_zone(); + time_point<nanoseconds> tp; + for (int ms = 0; ms < 1000; ms += 111) { + for (int us = 0; us < 1000; us += 27) { + const int micros = ms * 1000 + us; + for (int ns = 0; ns < 1000; ns += 9) { + const auto expected = + system_clock::from_time_t(0) + nanoseconds(micros * 1000 + ns); + std::ostringstream oss; + oss << "0." << std::setfill('0') << std::setw(3); + oss << ms << std::setw(3) << us << std::setw(3) << ns; + const std::string input = oss.str(); + EXPECT_TRUE(parse("%E*S", input, tz, &tp)); + EXPECT_EQ(expected, tp) << input; + } + } + } +} + +TEST(Parse, ExtendedSubeconds) { + const time_zone tz = utc_time_zone(); + const time_point<nanoseconds> unix_epoch = system_clock::from_time_t(0); + + // All %E<prec>f cases are treated the same as %E*f on input. + auto precisions = {"*", "0", "1", "2", "3", "4", "5", "6", "7", + "8", "9", "10", "11", "12", "13", "14", "15"}; + for (const std::string& prec : precisions) { + const std::string fmt = "%E" + prec + "f"; + SCOPED_TRACE(fmt); + time_point<nanoseconds> tp = unix_epoch - seconds(1); + EXPECT_TRUE(parse(fmt, "", tz, &tp)); + EXPECT_EQ(unix_epoch, tp); + tp = unix_epoch; + EXPECT_TRUE(parse(fmt, "6", tz, &tp)); + EXPECT_EQ(unix_epoch + milliseconds(600), tp); + tp = unix_epoch; + EXPECT_TRUE(parse(fmt, "60", tz, &tp)); + EXPECT_EQ(unix_epoch + milliseconds(600), tp); + tp = unix_epoch; + EXPECT_TRUE(parse(fmt, "600", tz, &tp)); + EXPECT_EQ(unix_epoch + milliseconds(600), tp); + tp = unix_epoch; + EXPECT_TRUE(parse(fmt, "67", tz, &tp)); + EXPECT_EQ(unix_epoch + milliseconds(670), tp); + tp = unix_epoch; + EXPECT_TRUE(parse(fmt, "670", tz, &tp)); + EXPECT_EQ(unix_epoch + milliseconds(670), tp); + tp = unix_epoch; + EXPECT_TRUE(parse(fmt, "678", tz, &tp)); + EXPECT_EQ(unix_epoch + milliseconds(678), tp); + tp = unix_epoch; + EXPECT_TRUE(parse(fmt, "6789", tz, &tp)); + EXPECT_EQ(unix_epoch + milliseconds(678) + microseconds(900), tp); + } + + // Here is a "%E*f" case we got wrong for a while. The fractional + // part of the first instant is less than 2^31 and was correctly + // parsed, while the second (and any subsecond field >=2^31) failed. + time_point<nanoseconds> tp = unix_epoch; + EXPECT_TRUE(parse("%E*f", "2147483647", tz, &tp)); + EXPECT_EQ(unix_epoch + nanoseconds(214748364), tp); + tp = unix_epoch; + EXPECT_TRUE(parse("%E*f", "2147483648", tz, &tp)); + EXPECT_EQ(unix_epoch + nanoseconds(214748364), tp); + + // We should also be able to specify long strings of digits far + // beyond the current resolution and have them convert the same way. + tp = unix_epoch; + EXPECT_TRUE(parse( + "%E*f", "214748364801234567890123456789012345678901234567890123456789", + tz, &tp)); + EXPECT_EQ(unix_epoch + nanoseconds(214748364), tp); +} + +TEST(Parse, ExtendedSubecondsScan) { + time_point<nanoseconds> tp; + const time_zone tz = utc_time_zone(); + for (int ms = 0; ms < 1000; ms += 111) { + for (int us = 0; us < 1000; us += 27) { + const int micros = ms * 1000 + us; + for (int ns = 0; ns < 1000; ns += 9) { + std::ostringstream oss; + oss << std::setfill('0') << std::setw(3) << ms; + oss << std::setw(3) << us << std::setw(3) << ns; + const std::string nanos = oss.str(); + const auto expected = + system_clock::from_time_t(0) + nanoseconds(micros * 1000 + ns); + for (int ps = 0; ps < 1000; ps += 250) { + std::ostringstream oss; + oss << std::setfill('0') << std::setw(3) << ps; + const std::string input = nanos + oss.str() + "999"; + EXPECT_TRUE(parse("%E*f", input, tz, &tp)); + EXPECT_EQ(expected + nanoseconds(ps) / 1000, tp) << input; + } + } + } + } +} + +TEST(Parse, ExtendedOffset) { + const time_zone utc = utc_time_zone(); + time_point<sys_seconds> tp; + + // %z against +-HHMM. + EXPECT_TRUE(parse("%z", "+0000", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 0, 0, 0), utc), tp); + EXPECT_TRUE(parse("%z", "-1234", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 12, 34, 0), utc), tp); + EXPECT_TRUE(parse("%z", "+1234", utc, &tp)); + EXPECT_EQ(convert(civil_second(1969, 12, 31, 11, 26, 0), utc), tp); + EXPECT_FALSE(parse("%z", "-123", utc, &tp)); + + // %z against +-HH. + EXPECT_TRUE(parse("%z", "+00", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 0, 0, 0), utc), tp); + EXPECT_TRUE(parse("%z", "-12", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 12, 0, 0), utc), tp); + EXPECT_TRUE(parse("%z", "+12", utc, &tp)); + EXPECT_EQ(convert(civil_second(1969, 12, 31, 12, 0, 0), utc), tp); + EXPECT_FALSE(parse("%z", "-1", utc, &tp)); + + // %Ez against +-HH:MM. + EXPECT_TRUE(parse("%Ez", "+00:00", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 0, 0, 0), utc), tp); + EXPECT_TRUE(parse("%Ez", "-12:34", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 12, 34, 0), utc), tp); + EXPECT_TRUE(parse("%Ez", "+12:34", utc, &tp)); + EXPECT_EQ(convert(civil_second(1969, 12, 31, 11, 26, 0), utc), tp); + EXPECT_FALSE(parse("%Ez", "-12:3", utc, &tp)); + + // %Ez against +-HHMM. + EXPECT_TRUE(parse("%Ez", "+0000", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 0, 0, 0), utc), tp); + EXPECT_TRUE(parse("%Ez", "-1234", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 12, 34, 0), utc), tp); + EXPECT_TRUE(parse("%Ez", "+1234", utc, &tp)); + EXPECT_EQ(convert(civil_second(1969, 12, 31, 11, 26, 0), utc), tp); + EXPECT_FALSE(parse("%Ez", "-123", utc, &tp)); + + // %Ez against +-HH. + EXPECT_TRUE(parse("%Ez", "+00", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 0, 0, 0), utc), tp); + EXPECT_TRUE(parse("%Ez", "-12", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 12, 0, 0), utc), tp); + EXPECT_TRUE(parse("%Ez", "+12", utc, &tp)); + EXPECT_EQ(convert(civil_second(1969, 12, 31, 12, 0, 0), utc), tp); + EXPECT_FALSE(parse("%Ez", "-1", utc, &tp)); +} + +TEST(Parse, ExtendedSecondOffset) { + const time_zone utc = utc_time_zone(); + time_point<sys_seconds> tp; + + // %Ez against +-HH:MM:SS. + EXPECT_TRUE(parse("%Ez", "+00:00:00", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 0, 0, 0), utc), tp); + EXPECT_TRUE(parse("%Ez", "-12:34:56", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 12, 34, 56), utc), tp); + EXPECT_TRUE(parse("%Ez", "+12:34:56", utc, &tp)); + EXPECT_EQ(convert(civil_second(1969, 12, 31, 11, 25, 4), utc), tp); + EXPECT_FALSE(parse("%Ez", "-12:34:5", utc, &tp)); + + // %Ez against +-HHMMSS. + EXPECT_TRUE(parse("%Ez", "+000000", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 0, 0, 0), utc), tp); + EXPECT_TRUE(parse("%Ez", "-123456", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 12, 34, 56), utc), tp); + EXPECT_TRUE(parse("%Ez", "+123456", utc, &tp)); + EXPECT_EQ(convert(civil_second(1969, 12, 31, 11, 25, 4), utc), tp); + EXPECT_FALSE(parse("%Ez", "-12345", utc, &tp)); + + // %E*z against +-HH:MM:SS. + EXPECT_TRUE(parse("%E*z", "+00:00:00", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 0, 0, 0), utc), tp); + EXPECT_TRUE(parse("%E*z", "-12:34:56", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 12, 34, 56), utc), tp); + EXPECT_TRUE(parse("%E*z", "+12:34:56", utc, &tp)); + EXPECT_EQ(convert(civil_second(1969, 12, 31, 11, 25, 4), utc), tp); + EXPECT_FALSE(parse("%E*z", "-12:34:5", utc, &tp)); + + // %E*z against +-HHMMSS. + EXPECT_TRUE(parse("%E*z", "+000000", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 0, 0, 0), utc), tp); + EXPECT_TRUE(parse("%E*z", "-123456", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 12, 34, 56), utc), tp); + EXPECT_TRUE(parse("%E*z", "+123456", utc, &tp)); + EXPECT_EQ(convert(civil_second(1969, 12, 31, 11, 25, 4), utc), tp); + EXPECT_FALSE(parse("%E*z", "-12345", utc, &tp)); + + // %E*z against +-HH:MM. + EXPECT_TRUE(parse("%E*z", "+00:00", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 0, 0, 0), utc), tp); + EXPECT_TRUE(parse("%E*z", "-12:34", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 12, 34, 0), utc), tp); + EXPECT_TRUE(parse("%E*z", "+12:34", utc, &tp)); + EXPECT_EQ(convert(civil_second(1969, 12, 31, 11, 26, 0), utc), tp); + EXPECT_FALSE(parse("%E*z", "-12:3", utc, &tp)); + + // %E*z against +-HHMM. + EXPECT_TRUE(parse("%E*z", "+0000", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 0, 0, 0), utc), tp); + EXPECT_TRUE(parse("%E*z", "-1234", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 12, 34, 0), utc), tp); + EXPECT_TRUE(parse("%E*z", "+1234", utc, &tp)); + EXPECT_EQ(convert(civil_second(1969, 12, 31, 11, 26, 0), utc), tp); + EXPECT_FALSE(parse("%E*z", "-123", utc, &tp)); + + // %E*z against +-HH. + EXPECT_TRUE(parse("%E*z", "+00", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 0, 0, 0), utc), tp); + EXPECT_TRUE(parse("%E*z", "-12", utc, &tp)); + EXPECT_EQ(convert(civil_second(1970, 1, 1, 12, 0, 0), utc), tp); + EXPECT_TRUE(parse("%E*z", "+12", utc, &tp)); + EXPECT_EQ(convert(civil_second(1969, 12, 31, 12, 0, 0), utc), tp); + EXPECT_FALSE(parse("%E*z", "-1", utc, &tp)); +} + +TEST(Parse, ExtendedYears) { + const time_zone utc = utc_time_zone(); + const char e4y_fmt[] = "%E4Y%m%d"; // no separators + time_point<sys_seconds> tp; + + // %E4Y consumes exactly four chars, including any sign. + EXPECT_TRUE(parse(e4y_fmt, "-9991127", utc, &tp)); + EXPECT_EQ(convert(civil_second(-999, 11, 27, 0, 0, 0), utc), tp); + EXPECT_TRUE(parse(e4y_fmt, "-0991127", utc, &tp)); + EXPECT_EQ(convert(civil_second(-99, 11, 27, 0, 0, 0), utc), tp); + EXPECT_TRUE(parse(e4y_fmt, "-0091127", utc, &tp)); + EXPECT_EQ(convert(civil_second(-9, 11, 27, 0, 0, 0), utc), tp); + EXPECT_TRUE(parse(e4y_fmt, "-0011127", utc, &tp)); + EXPECT_EQ(convert(civil_second(-1, 11, 27, 0, 0, 0), utc), tp); + EXPECT_TRUE(parse(e4y_fmt, "00001127", utc, &tp)); + EXPECT_EQ(convert(civil_second(0, 11, 27, 0, 0, 0), utc), tp); + EXPECT_TRUE(parse(e4y_fmt, "00011127", utc, &tp)); + EXPECT_EQ(convert(civil_second(1, 11, 27, 0, 0, 0), utc), tp); + EXPECT_TRUE(parse(e4y_fmt, "00091127", utc, &tp)); + EXPECT_EQ(convert(civil_second(9, 11, 27, 0, 0, 0), utc), tp); + EXPECT_TRUE(parse(e4y_fmt, "00991127", utc, &tp)); + EXPECT_EQ(convert(civil_second(99, 11, 27, 0, 0, 0), utc), tp); + EXPECT_TRUE(parse(e4y_fmt, "09991127", utc, &tp)); + EXPECT_EQ(convert(civil_second(999, 11, 27, 0, 0, 0), utc), tp); + EXPECT_TRUE(parse(e4y_fmt, "99991127", utc, &tp)); + EXPECT_EQ(convert(civil_second(9999, 11, 27, 0, 0, 0), utc), tp); + + // When the year is outside [-999:9999], the parse fails. + EXPECT_FALSE(parse(e4y_fmt, "-10001127", utc, &tp)); + EXPECT_FALSE(parse(e4y_fmt, "100001127", utc, &tp)); +} + +TEST(Parse, RFC3339Format) { + const time_zone tz = utc_time_zone(); + time_point<nanoseconds> tp; + EXPECT_TRUE(parse(RFC3339_sec, "2014-02-12T20:21:00+00:00", tz, &tp)); + ExpectTime(tp, tz, 2014, 2, 12, 20, 21, 0, 0, false, "UTC"); + + // Check that %Ez also accepts "Z" as a synonym for "+00:00". + time_point<nanoseconds> tp2; + EXPECT_TRUE(parse(RFC3339_sec, "2014-02-12T20:21:00Z", tz, &tp2)); + EXPECT_EQ(tp, tp2); +} + +TEST(Parse, MaxRange) { + const time_zone utc = utc_time_zone(); + time_point<sys_seconds> tp; + + // tests the upper limit using +00:00 offset + EXPECT_TRUE( + parse(RFC3339_sec, "292277026596-12-04T15:30:07+00:00", utc, &tp)); + EXPECT_EQ(tp, time_point<sys_seconds>::max()); + EXPECT_FALSE( + parse(RFC3339_sec, "292277026596-12-04T15:30:08+00:00", utc, &tp)); + + // tests the upper limit using -01:00 offset + EXPECT_TRUE( + parse(RFC3339_sec, "292277026596-12-04T14:30:07-01:00", utc, &tp)); + EXPECT_EQ(tp, time_point<sys_seconds>::max()); + EXPECT_FALSE( + parse(RFC3339_sec, "292277026596-12-04T15:30:07-01:00", utc, &tp)); + + // tests the lower limit using +00:00 offset + EXPECT_TRUE( + parse(RFC3339_sec, "-292277022657-01-27T08:29:52+00:00", utc, &tp)); + EXPECT_EQ(tp, time_point<sys_seconds>::min()); + EXPECT_FALSE( + parse(RFC3339_sec, "-292277022657-01-27T08:29:51+00:00", utc, &tp)); + + // tests the lower limit using +01:00 offset + EXPECT_TRUE( + parse(RFC3339_sec, "-292277022657-01-27T09:29:52+01:00", utc, &tp)); + EXPECT_EQ(tp, time_point<sys_seconds>::min()); + EXPECT_FALSE( + parse(RFC3339_sec, "-292277022657-01-27T08:29:51+01:00", utc, &tp)); + + // tests max/min civil-second overflow + EXPECT_FALSE(parse(RFC3339_sec, "9223372036854775807-12-31T23:59:59-00:01", + utc, &tp)); + EXPECT_FALSE(parse(RFC3339_sec, "-9223372036854775808-01-01T00:00:00+00:01", + utc, &tp)); + + // TODO: Add tests that parsing times with fractional seconds overflow + // appropriately. This can't be done until cctz::parse() properly detects + // overflow when combining the chrono seconds and femto. +} + +// +// Roundtrip test for format()/parse(). +// + +TEST(FormatParse, RoundTrip) { + time_zone lax; + EXPECT_TRUE(load_time_zone("America/Los_Angeles", &lax)); + const auto in = convert(civil_second(1977, 6, 28, 9, 8, 7), lax); + const auto subseconds = nanoseconds(654321); + + // RFC3339, which renders subseconds. + { + time_point<nanoseconds> out; + const std::string s = format(RFC3339_full, in + subseconds, lax); + EXPECT_TRUE(parse(RFC3339_full, s, lax, &out)) << s; + EXPECT_EQ(in + subseconds, out); // RFC3339_full includes %Ez + } + + // RFC1123, which only does whole seconds. + { + time_point<nanoseconds> out; + const std::string s = format(RFC1123_full, in, lax); + EXPECT_TRUE(parse(RFC1123_full, s, lax, &out)) << s; + EXPECT_EQ(in, out); // RFC1123_full includes %z + } + +#if defined(_WIN32) || defined(_WIN64) + // Initial investigations indicate the %c does not roundtrip on Windows. + // TODO: Figure out what is going on here (perhaps a locale problem). +#else + // Even though we don't know what %c will produce, it should roundtrip, + // but only in the 0-offset timezone. + { + time_point<nanoseconds> out; + time_zone utc = utc_time_zone(); + const std::string s = format("%c", in, utc); + EXPECT_TRUE(parse("%c", s, utc, &out)) << s; + EXPECT_EQ(in, out); + } +#endif +} + +TEST(FormatParse, RoundTripDistantFuture) { + const time_zone utc = utc_time_zone(); + const time_point<sys_seconds> in = time_point<sys_seconds>::max(); + const std::string s = format(RFC3339_full, in, utc); + time_point<sys_seconds> out; + EXPECT_TRUE(parse(RFC3339_full, s, utc, &out)) << s; + EXPECT_EQ(in, out); +} + +TEST(FormatParse, RoundTripDistantPast) { + const time_zone utc = utc_time_zone(); + const time_point<sys_seconds> in = time_point<sys_seconds>::min(); + const std::string s = format(RFC3339_full, in, utc); + time_point<sys_seconds> out; + EXPECT_TRUE(parse(RFC3339_full, s, utc, &out)) << s; + EXPECT_EQ(in, out); +} + +} // namespace cctz +} // namespace time_internal +} // namespace absl |