diff options
Diffstat (limited to 'absl/time/internal/cctz/src/time_zone_lookup_test.cc')
-rw-r--r-- | absl/time/internal/cctz/src/time_zone_lookup_test.cc | 456 |
1 files changed, 314 insertions, 142 deletions
diff --git a/absl/time/internal/cctz/src/time_zone_lookup_test.cc b/absl/time/internal/cctz/src/time_zone_lookup_test.cc index a1b6c687..e0e355ee 100644 --- a/absl/time/internal/cctz/src/time_zone_lookup_test.cc +++ b/absl/time/internal/cctz/src/time_zone_lookup_test.cc @@ -16,7 +16,9 @@ #include <chrono> #include <cstddef> +#include <cstdlib> #include <future> +#include <limits> #include <string> #include <thread> #include <vector> @@ -24,17 +26,10 @@ #include "absl/time/internal/cctz/include/cctz/civil_time.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; +namespace chrono = std::chrono; namespace absl { -inline namespace lts_2018_06_20 { +inline namespace lts_2018_12_18 { namespace time_internal { namespace cctz { @@ -659,6 +654,17 @@ time_zone LoadZone(const std::string& name) { /* EXPECT_STREQ(zone, al.abbr); */ \ } while (0) +// These tests sometimes run on platforms that have zoneinfo data so old +// that the transition we are attempting to check does not exist, most +// notably Android emulators. Fortunately, AndroidZoneInfoSource supports +// time_zone::version() so, in cases where we've learned that it matters, +// we can make the check conditionally. +int VersionCmp(time_zone tz, const std::string& target) { + std::string version = tz.version(); + if (version.empty() && !target.empty()) return 1; // unknown > known + return version.compare(target); +} + } // namespace TEST(TimeZones, LoadZonesConcurrently) { @@ -716,13 +722,13 @@ TEST(TimeZone, NamedTimeZones) { EXPECT_EQ("America/New_York", nyc.name()); const time_zone syd = LoadZone("Australia/Sydney"); EXPECT_EQ("Australia/Sydney", syd.name()); - const time_zone fixed0 = fixed_time_zone(sys_seconds::zero()); + const time_zone fixed0 = fixed_time_zone(absl::time_internal::cctz::seconds::zero()); EXPECT_EQ("UTC", fixed0.name()); - const time_zone fixed_pos = - fixed_time_zone(hours(3) + minutes(25) + seconds(45)); + const time_zone fixed_pos = fixed_time_zone( + chrono::hours(3) + chrono::minutes(25) + chrono::seconds(45)); EXPECT_EQ("Fixed/UTC+03:25:45", fixed_pos.name()); - const time_zone fixed_neg = - fixed_time_zone(-(hours(12) + minutes(34) + seconds(56))); + const time_zone fixed_neg = fixed_time_zone( + -(chrono::hours(12) + chrono::minutes(34) + chrono::seconds(56))); EXPECT_EQ("Fixed/UTC-12:34:56", fixed_neg.name()); } @@ -732,19 +738,19 @@ TEST(TimeZone, Failures) { tz = LoadZone("America/Los_Angeles"); EXPECT_FALSE(load_time_zone("Invalid/TimeZone", &tz)); - EXPECT_EQ(system_clock::from_time_t(0), + EXPECT_EQ(chrono::system_clock::from_time_t(0), convert(civil_second(1970, 1, 1, 0, 0, 0), tz)); // UTC // Ensures that the load still fails on a subsequent attempt. tz = LoadZone("America/Los_Angeles"); EXPECT_FALSE(load_time_zone("Invalid/TimeZone", &tz)); - EXPECT_EQ(system_clock::from_time_t(0), + EXPECT_EQ(chrono::system_clock::from_time_t(0), convert(civil_second(1970, 1, 1, 0, 0, 0), tz)); // UTC // Loading an empty std::string timezone should fail. tz = LoadZone("America/Los_Angeles"); EXPECT_FALSE(load_time_zone("", &tz)); - EXPECT_EQ(system_clock::from_time_t(0), + EXPECT_EQ(chrono::system_clock::from_time_t(0), convert(civil_second(1970, 1, 1, 0, 0, 0), tz)); // UTC } @@ -759,7 +765,7 @@ TEST(TimeZone, Equality) { EXPECT_EQ(implicit_utc, explicit_utc); EXPECT_EQ(implicit_utc.name(), explicit_utc.name()); - const time_zone fixed_zero = fixed_time_zone(sys_seconds::zero()); + const time_zone fixed_zero = fixed_time_zone(absl::time_internal::cctz::seconds::zero()); EXPECT_EQ(fixed_zero, LoadZone(fixed_zero.name())); EXPECT_EQ(fixed_zero, explicit_utc); @@ -767,23 +773,25 @@ TEST(TimeZone, Equality) { EXPECT_EQ(fixed_utc, LoadZone(fixed_utc.name())); EXPECT_EQ(fixed_utc, explicit_utc); - const time_zone fixed_pos = - fixed_time_zone(hours(3) + minutes(25) + seconds(45)); + const time_zone fixed_pos = fixed_time_zone( + chrono::hours(3) + chrono::minutes(25) + chrono::seconds(45)); EXPECT_EQ(fixed_pos, LoadZone(fixed_pos.name())); EXPECT_NE(fixed_pos, explicit_utc); - const time_zone fixed_neg = - fixed_time_zone(-(hours(12) + minutes(34) + seconds(56))); + const time_zone fixed_neg = fixed_time_zone( + -(chrono::hours(12) + chrono::minutes(34) + chrono::seconds(56))); EXPECT_EQ(fixed_neg, LoadZone(fixed_neg.name())); EXPECT_NE(fixed_neg, explicit_utc); - const time_zone fixed_lim = fixed_time_zone(hours(24)); + const time_zone fixed_lim = fixed_time_zone(chrono::hours(24)); EXPECT_EQ(fixed_lim, LoadZone(fixed_lim.name())); EXPECT_NE(fixed_lim, explicit_utc); - const time_zone fixed_ovfl = fixed_time_zone(hours(24) + seconds(1)); + const time_zone fixed_ovfl = + fixed_time_zone(chrono::hours(24) + chrono::seconds(1)); EXPECT_EQ(fixed_ovfl, LoadZone(fixed_ovfl.name())); EXPECT_EQ(fixed_ovfl, explicit_utc); - EXPECT_EQ(fixed_time_zone(seconds(1)), fixed_time_zone(seconds(1))); + EXPECT_EQ(fixed_time_zone(chrono::seconds(1)), + fixed_time_zone(chrono::seconds(1))); const time_zone local = local_time_zone(); EXPECT_EQ(local, LoadZone(local.name())); @@ -796,40 +804,43 @@ TEST(TimeZone, Equality) { TEST(StdChronoTimePoint, TimeTAlignment) { // Ensures that the Unix epoch and the system clock epoch are an integral // number of seconds apart. This simplifies conversions to/from time_t. - auto diff = system_clock::time_point() - system_clock::from_time_t(0); - EXPECT_EQ(system_clock::time_point::duration::zero(), diff % seconds(1)); + auto diff = chrono::system_clock::time_point() - + chrono::system_clock::from_time_t(0); + EXPECT_EQ(chrono::system_clock::time_point::duration::zero(), + diff % chrono::seconds(1)); } TEST(BreakTime, TimePointResolution) { const time_zone utc = utc_time_zone(); - const auto t0 = system_clock::from_time_t(0); + const auto t0 = chrono::system_clock::from_time_t(0); - ExpectTime(time_point_cast<nanoseconds>(t0), utc, + ExpectTime(chrono::time_point_cast<chrono::nanoseconds>(t0), utc, 1970, 1, 1, 0, 0, 0, 0, false, "UTC"); - ExpectTime(time_point_cast<microseconds>(t0), utc, + ExpectTime(chrono::time_point_cast<chrono::microseconds>(t0), utc, 1970, 1, 1, 0, 0, 0, 0, false, "UTC"); - ExpectTime(time_point_cast<milliseconds>(t0), utc, + ExpectTime(chrono::time_point_cast<chrono::milliseconds>(t0), utc, 1970, 1, 1, 0, 0, 0, 0, false, "UTC"); - ExpectTime(time_point_cast<seconds>(t0), utc, + ExpectTime(chrono::time_point_cast<chrono::seconds>(t0), utc, 1970, 1, 1, 0, 0, 0, 0, false, "UTC"); - ExpectTime(time_point_cast<sys_seconds>(t0), utc, + ExpectTime(chrono::time_point_cast<absl::time_internal::cctz::seconds>(t0), utc, 1970, 1, 1, 0, 0, 0, 0, false, "UTC"); - ExpectTime(time_point_cast<minutes>(t0), utc, + ExpectTime(chrono::time_point_cast<chrono::minutes>(t0), utc, 1970, 1, 1, 0, 0, 0, 0, false, "UTC"); - ExpectTime(time_point_cast<hours>(t0), utc, + ExpectTime(chrono::time_point_cast<chrono::hours>(t0), utc, 1970, 1, 1, 0, 0, 0, 0, false, "UTC"); } TEST(BreakTime, LocalTimeInUTC) { const time_zone tz = utc_time_zone(); - const auto tp = system_clock::from_time_t(0); + const auto tp = chrono::system_clock::from_time_t(0); ExpectTime(tp, tz, 1970, 1, 1, 0, 0, 0, 0, false, "UTC"); EXPECT_EQ(weekday::thursday, get_weekday(civil_day(convert(tp, tz)))); } TEST(BreakTime, LocalTimeInUTCUnaligned) { const time_zone tz = utc_time_zone(); - const auto tp = system_clock::from_time_t(0) - milliseconds(500); + const auto tp = + chrono::system_clock::from_time_t(0) - chrono::milliseconds(500); ExpectTime(tp, tz, 1969, 12, 31, 23, 59, 59, 0, false, "UTC"); EXPECT_EQ(weekday::wednesday, get_weekday(civil_day(convert(tp, tz)))); } @@ -837,15 +848,16 @@ TEST(BreakTime, LocalTimeInUTCUnaligned) { TEST(BreakTime, LocalTimePosix) { // See IEEE Std 1003.1-1988 B.2.3 General Terms, Epoch. const time_zone tz = utc_time_zone(); - const auto tp = system_clock::from_time_t(536457599); + const auto tp = chrono::system_clock::from_time_t(536457599); ExpectTime(tp, tz, 1986, 12, 31, 23, 59, 59, 0, false, "UTC"); EXPECT_EQ(weekday::wednesday, get_weekday(civil_day(convert(tp, tz)))); } TEST(TimeZoneImpl, LocalTimeInFixed) { - const sys_seconds offset = -(hours(8) + minutes(33) + seconds(47)); + const absl::time_internal::cctz::seconds offset = + -(chrono::hours(8) + chrono::minutes(33) + chrono::seconds(47)); const time_zone tz = fixed_time_zone(offset); - const auto tp = system_clock::from_time_t(0); + const auto tp = chrono::system_clock::from_time_t(0); ExpectTime(tp, tz, 1969, 12, 31, 15, 26, 13, offset.count(), false, "-083347"); EXPECT_EQ(weekday::wednesday, get_weekday(civil_day(convert(tp, tz)))); @@ -853,52 +865,52 @@ TEST(TimeZoneImpl, LocalTimeInFixed) { TEST(BreakTime, LocalTimeInNewYork) { const time_zone tz = LoadZone("America/New_York"); - const auto tp = system_clock::from_time_t(45); + const auto tp = chrono::system_clock::from_time_t(45); ExpectTime(tp, tz, 1969, 12, 31, 19, 0, 45, -5 * 60 * 60, false, "EST"); EXPECT_EQ(weekday::wednesday, get_weekday(civil_day(convert(tp, tz)))); } TEST(BreakTime, LocalTimeInMTV) { const time_zone tz = LoadZone("America/Los_Angeles"); - const auto tp = system_clock::from_time_t(1380855729); + const auto tp = chrono::system_clock::from_time_t(1380855729); ExpectTime(tp, tz, 2013, 10, 3, 20, 2, 9, -7 * 60 * 60, true, "PDT"); EXPECT_EQ(weekday::thursday, get_weekday(civil_day(convert(tp, tz)))); } TEST(BreakTime, LocalTimeInSydney) { const time_zone tz = LoadZone("Australia/Sydney"); - const auto tp = system_clock::from_time_t(90); + const auto tp = chrono::system_clock::from_time_t(90); ExpectTime(tp, tz, 1970, 1, 1, 10, 1, 30, 10 * 60 * 60, false, "AEST"); EXPECT_EQ(weekday::thursday, get_weekday(civil_day(convert(tp, tz)))); } TEST(MakeTime, TimePointResolution) { const time_zone utc = utc_time_zone(); - const time_point<nanoseconds> tp_ns = + const time_point<chrono::nanoseconds> tp_ns = convert(civil_second(2015, 1, 2, 3, 4, 5), utc); EXPECT_EQ("04:05", format("%M:%E*S", tp_ns, utc)); - const time_point<microseconds> tp_us = + const time_point<chrono::microseconds> tp_us = convert(civil_second(2015, 1, 2, 3, 4, 5), utc); EXPECT_EQ("04:05", format("%M:%E*S", tp_us, utc)); - const time_point<milliseconds> tp_ms = + const time_point<chrono::milliseconds> tp_ms = convert(civil_second(2015, 1, 2, 3, 4, 5), utc); EXPECT_EQ("04:05", format("%M:%E*S", tp_ms, utc)); - const time_point<seconds> tp_s = + const time_point<chrono::seconds> tp_s = convert(civil_second(2015, 1, 2, 3, 4, 5), utc); EXPECT_EQ("04:05", format("%M:%E*S", tp_s, utc)); - const time_point<sys_seconds> tp_s64 = + const time_point<absl::time_internal::cctz::seconds> tp_s64 = convert(civil_second(2015, 1, 2, 3, 4, 5), utc); EXPECT_EQ("04:05", format("%M:%E*S", tp_s64, utc)); - // These next two require time_point_cast because the conversion from a - // resolution of seconds (the return value of convert()) to a coarser - // resolution requires an explicit cast. - const time_point<minutes> tp_m = - time_point_cast<minutes>( + // These next two require chrono::time_point_cast because the conversion + // from a resolution of seconds (the return value of convert()) to a + // coarser resolution requires an explicit cast. + const time_point<chrono::minutes> tp_m = + chrono::time_point_cast<chrono::minutes>( convert(civil_second(2015, 1, 2, 3, 4, 5), utc)); EXPECT_EQ("04:00", format("%M:%E*S", tp_m, utc)); - const time_point<hours> tp_h = - time_point_cast<hours>( + const time_point<chrono::hours> tp_h = + chrono::time_point_cast<chrono::hours>( convert(civil_second(2015, 1, 2, 3, 4, 5), utc)); EXPECT_EQ("00:00", format("%M:%E*S", tp_h, utc)); } @@ -906,7 +918,7 @@ TEST(MakeTime, TimePointResolution) { TEST(MakeTime, Normalization) { const time_zone tz = LoadZone("America/New_York"); const auto tp = convert(civil_second(2009, 2, 13, 18, 31, 30), tz); - EXPECT_EQ(system_clock::from_time_t(1234567890), tp); + EXPECT_EQ(chrono::system_clock::from_time_t(1234567890), tp); // Now requests for the same time_point but with out-of-range fields. EXPECT_EQ(tp, convert(civil_second(2008, 14, 13, 18, 31, 30), tz)); // month @@ -916,71 +928,234 @@ TEST(MakeTime, Normalization) { EXPECT_EQ(tp, convert(civil_second(2009, 2, 13, 18, 30, 90), tz)); // second } -// NOTE: Run this with --copt=-ftrapv to detect overflow problems. +// NOTE: Run this with -ftrapv to detect overflow problems. TEST(MakeTime, SysSecondsLimits) { const char RFC3339[] = "%Y-%m-%dT%H:%M:%S%Ez"; const time_zone utc = utc_time_zone(); - const time_zone east = fixed_time_zone(hours(14)); - const time_zone west = fixed_time_zone(-hours(14)); - time_point<sys_seconds> tp; + const time_zone east = fixed_time_zone(chrono::hours(14)); + const time_zone west = fixed_time_zone(-chrono::hours(14)); + time_point<absl::time_internal::cctz::seconds> tp; - // Approach the maximal time_point<sys_seconds> value from below. + // Approach the maximal time_point<cctz::seconds> value from below. tp = convert(civil_second(292277026596, 12, 4, 15, 30, 6), utc); EXPECT_EQ("292277026596-12-04T15:30:06+00:00", format(RFC3339, tp, utc)); tp = convert(civil_second(292277026596, 12, 4, 15, 30, 7), utc); EXPECT_EQ("292277026596-12-04T15:30:07+00:00", format(RFC3339, tp, utc)); - EXPECT_EQ(time_point<sys_seconds>::max(), tp); + EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp); tp = convert(civil_second(292277026596, 12, 4, 15, 30, 8), utc); - EXPECT_EQ(time_point<sys_seconds>::max(), tp); + EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp); tp = convert(civil_second::max(), utc); - EXPECT_EQ(time_point<sys_seconds>::max(), tp); + EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp); // Checks that we can also get the maximal value for a far-east zone. tp = convert(civil_second(292277026596, 12, 5, 5, 30, 7), east); EXPECT_EQ("292277026596-12-05T05:30:07+14:00", format(RFC3339, tp, east)); - EXPECT_EQ(time_point<sys_seconds>::max(), tp); + EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp); tp = convert(civil_second(292277026596, 12, 5, 5, 30, 8), east); - EXPECT_EQ(time_point<sys_seconds>::max(), tp); + EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp); tp = convert(civil_second::max(), east); - EXPECT_EQ(time_point<sys_seconds>::max(), tp); + EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp); // Checks that we can also get the maximal value for a far-west zone. tp = convert(civil_second(292277026596, 12, 4, 1, 30, 7), west); EXPECT_EQ("292277026596-12-04T01:30:07-14:00", format(RFC3339, tp, west)); - EXPECT_EQ(time_point<sys_seconds>::max(), tp); + EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp); tp = convert(civil_second(292277026596, 12, 4, 7, 30, 8), west); - EXPECT_EQ(time_point<sys_seconds>::max(), tp); + EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp); tp = convert(civil_second::max(), west); - EXPECT_EQ(time_point<sys_seconds>::max(), tp); + EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::max(), tp); - // Approach the minimal time_point<sys_seconds> value from above. + // Approach the minimal time_point<cctz::seconds> value from above. tp = convert(civil_second(-292277022657, 1, 27, 8, 29, 53), utc); EXPECT_EQ("-292277022657-01-27T08:29:53+00:00", format(RFC3339, tp, utc)); tp = convert(civil_second(-292277022657, 1, 27, 8, 29, 52), utc); EXPECT_EQ("-292277022657-01-27T08:29:52+00:00", format(RFC3339, tp, utc)); - EXPECT_EQ(time_point<sys_seconds>::min(), tp); + EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp); tp = convert(civil_second(-292277022657, 1, 27, 8, 29, 51), utc); - EXPECT_EQ(time_point<sys_seconds>::min(), tp); + EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp); tp = convert(civil_second::min(), utc); - EXPECT_EQ(time_point<sys_seconds>::min(), tp); + EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp); // Checks that we can also get the minimal value for a far-east zone. tp = convert(civil_second(-292277022657, 1, 27, 22, 29, 52), east); EXPECT_EQ("-292277022657-01-27T22:29:52+14:00", format(RFC3339, tp, east)); - EXPECT_EQ(time_point<sys_seconds>::min(), tp); + EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp); tp = convert(civil_second(-292277022657, 1, 27, 22, 29, 51), east); - EXPECT_EQ(time_point<sys_seconds>::min(), tp); + EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp); tp = convert(civil_second::min(), east); - EXPECT_EQ(time_point<sys_seconds>::min(), tp); + EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp); // Checks that we can also get the minimal value for a far-west zone. tp = convert(civil_second(-292277022657, 1, 26, 18, 29, 52), west); EXPECT_EQ("-292277022657-01-26T18:29:52-14:00", format(RFC3339, tp, west)); - EXPECT_EQ(time_point<sys_seconds>::min(), tp); + EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp); tp = convert(civil_second(-292277022657, 1, 26, 18, 29, 51), west); - EXPECT_EQ(time_point<sys_seconds>::min(), tp); + EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp); tp = convert(civil_second::min(), west); - EXPECT_EQ(time_point<sys_seconds>::min(), tp); + EXPECT_EQ(time_point<absl::time_internal::cctz::seconds>::min(), tp); + + // Some similar checks for the "libc" time-zone implementation. + if (sizeof(std::time_t) >= 8) { + // Checks that "tm_year + 1900", as used by the "libc" implementation, + // can produce year values beyond the range on an int without overflow. +#if defined(_WIN32) || defined(_WIN64) + // localtime_s() and gmtime_s() don't believe in years outside [1970:3000]. +#else + const time_zone utc = LoadZone("libc:UTC"); + const year_t max_tm_year = year_t{std::numeric_limits<int>::max()} + 1900; + tp = convert(civil_second(max_tm_year, 12, 31, 23, 59, 59), utc); + EXPECT_EQ("2147485547-12-31T23:59:59+00:00", format(RFC3339, tp, utc)); + const year_t min_tm_year = year_t{std::numeric_limits<int>::min()} + 1900; + tp = convert(civil_second(min_tm_year, 1, 1, 0, 0, 0), utc); + EXPECT_EQ("-2147481748-01-01T00:00:00+00:00", format(RFC3339, tp, utc)); +#endif + } +} + +TEST(MakeTime, LocalTimeLibC) { + // Checks that cctz and libc agree on transition points in [1970:2037]. + // + // We limit this test case to environments where: + // 1) we know how to change the time zone used by localtime()/mktime(), + // 2) cctz and localtime()/mktime() will use similar-enough tzdata, and + // 3) we have some idea about how mktime() behaves during transitions. +#if defined(__linux__) + const char* const ep = getenv("TZ"); + std::string tz_name = (ep != nullptr) ? ep : ""; + for (const char* const* np = kTimeZoneNames; *np != nullptr; ++np) { + ASSERT_EQ(0, setenv("TZ", *np, 1)); // change what "localtime" means + const auto zi = local_time_zone(); + const auto lc = LoadZone("libc:localtime"); + time_zone::civil_transition trans; + for (auto tp = zi.lookup(civil_second()).trans; + zi.next_transition(tp, &trans); + tp = zi.lookup(trans.to).trans) { + const auto fcl = zi.lookup(trans.from); + const auto tcl = zi.lookup(trans.to); + civil_second cs; // compare cs in zi and lc + if (fcl.kind == time_zone::civil_lookup::UNIQUE) { + if (tcl.kind == time_zone::civil_lookup::UNIQUE) { + // Both unique; must be an is_dst or abbr change. + ASSERT_EQ(trans.from, trans.to); + const auto trans = fcl.trans; + const auto tal = zi.lookup(trans); + const auto tprev = trans - absl::time_internal::cctz::seconds(1); + const auto pal = zi.lookup(tprev); + if (pal.is_dst == tal.is_dst) { + ASSERT_STRNE(pal.abbr, tal.abbr); + } + continue; + } + ASSERT_EQ(time_zone::civil_lookup::REPEATED, tcl.kind); + cs = trans.to; + } else { + ASSERT_EQ(time_zone::civil_lookup::UNIQUE, tcl.kind); + ASSERT_EQ(time_zone::civil_lookup::SKIPPED, fcl.kind); + cs = trans.from; + } + if (cs.year() > 2037) break; // limit test time (and to 32-bit time_t) + const auto cl_zi = zi.lookup(cs); + if (zi.lookup(cl_zi.pre).is_dst == zi.lookup(cl_zi.post).is_dst) { + // The "libc" implementation cannot correctly classify transitions + // that don't change the "tm_isdst" flag. In Europe/Volgograd, for + // example, there is a SKIPPED transition from +03 to +04 with dst=F + // on both sides ... + // 1540681199 = 2018-10-28 01:59:59 +03:00:00 [dst=F off=10800] + // 1540681200 = 2018-10-28 03:00:00 +04:00:00 [dst=F off=14400] + // but std::mktime(2018-10-28 02:00:00, tm_isdst=0) fails, unlike, + // say, the similar Europe/Chisinau transition from +02 to +03 ... + // 1521935999 = 2018-03-25 01:59:59 +02:00:00 [dst=F off=7200] + // 1521936000 = 2018-03-25 03:00:00 +03:00:00 [dst=T off=10800] + // where std::mktime(2018-03-25 02:00:00, tm_isdst=0) succeeds and + // returns 1521936000. + continue; + } + if (cs == civil_second(2037, 10, 4, 2, 0, 0)) { + const std::string tzname = *np; + if (tzname == "Africa/Casablanca" || tzname == "Africa/El_Aaiun") { + // The "libc" implementation gets this transition wrong (at least + // until 2018g when it was removed), returning an offset of 3600 + // instead of 0. TODO: Revert this when 2018g is ubiquitous. + continue; + } + } + const auto cl_lc = lc.lookup(cs); + SCOPED_TRACE(testing::Message() << "For " << cs << " in " << *np); + EXPECT_EQ(cl_zi.kind, cl_lc.kind); + EXPECT_EQ(cl_zi.pre, cl_lc.pre); + EXPECT_EQ(cl_zi.trans, cl_lc.trans); + EXPECT_EQ(cl_zi.post, cl_lc.post); + } + } + if (ep == nullptr) { + ASSERT_EQ(0, unsetenv("TZ")); + } else { + ASSERT_EQ(0, setenv("TZ", tz_name.c_str(), 1)); + } +#endif +} + +TEST(NextTransition, UTC) { + const auto tz = utc_time_zone(); + time_zone::civil_transition trans; + + auto tp = time_point<absl::time_internal::cctz::seconds>::min(); + EXPECT_FALSE(tz.next_transition(tp, &trans)); + + tp = time_point<absl::time_internal::cctz::seconds>::max(); + EXPECT_FALSE(tz.next_transition(tp, &trans)); +} + +TEST(PrevTransition, UTC) { + const auto tz = utc_time_zone(); + time_zone::civil_transition trans; + + auto tp = time_point<absl::time_internal::cctz::seconds>::max(); + EXPECT_FALSE(tz.prev_transition(tp, &trans)); + + tp = time_point<absl::time_internal::cctz::seconds>::min(); + EXPECT_FALSE(tz.prev_transition(tp, &trans)); +} + +TEST(NextTransition, AmericaNewYork) { + const auto tz = LoadZone("America/New_York"); + time_zone::civil_transition trans; + + auto tp = convert(civil_second(2018, 6, 30, 0, 0, 0), tz); + EXPECT_TRUE(tz.next_transition(tp, &trans)); + EXPECT_EQ(civil_second(2018, 11, 4, 2, 0, 0), trans.from); + EXPECT_EQ(civil_second(2018, 11, 4, 1, 0, 0), trans.to); + + tp = time_point<absl::time_internal::cctz::seconds>::max(); + EXPECT_FALSE(tz.next_transition(tp, &trans)); + + tp = time_point<absl::time_internal::cctz::seconds>::min(); + EXPECT_TRUE(tz.next_transition(tp, &trans)); + if (trans.from == civil_second(1918, 3, 31, 2, 0, 0)) { + // It looks like the tzdata is only 32 bit (probably macOS), + // which bottoms out at 1901-12-13T20:45:52+00:00. + EXPECT_EQ(civil_second(1918, 3, 31, 3, 0, 0), trans.to); + } else { + EXPECT_EQ(civil_second(1883, 11, 18, 12, 3, 58), trans.from); + EXPECT_EQ(civil_second(1883, 11, 18, 12, 0, 0), trans.to); + } +} + +TEST(PrevTransition, AmericaNewYork) { + const auto tz = LoadZone("America/New_York"); + time_zone::civil_transition trans; + + auto tp = convert(civil_second(2018, 6, 30, 0, 0, 0), tz); + EXPECT_TRUE(tz.prev_transition(tp, &trans)); + EXPECT_EQ(civil_second(2018, 3, 11, 2, 0, 0), trans.from); + EXPECT_EQ(civil_second(2018, 3, 11, 3, 0, 0), trans.to); + + tp = time_point<absl::time_internal::cctz::seconds>::min(); + EXPECT_FALSE(tz.prev_transition(tp, &trans)); + + tp = time_point<absl::time_internal::cctz::seconds>::max(); + EXPECT_TRUE(tz.prev_transition(tp, &trans)); + // We have a transition but we don't know which one. } TEST(TimeZoneEdgeCase, AmericaNewYork) { @@ -989,13 +1164,13 @@ TEST(TimeZoneEdgeCase, AmericaNewYork) { // Spring 1:59:59 -> 3:00:00 auto tp = convert(civil_second(2013, 3, 10, 1, 59, 59), tz); ExpectTime(tp, tz, 2013, 3, 10, 1, 59, 59, -5 * 3600, false, "EST"); - tp += seconds(1); + tp += absl::time_internal::cctz::seconds(1); ExpectTime(tp, tz, 2013, 3, 10, 3, 0, 0, -4 * 3600, true, "EDT"); // Fall 1:59:59 -> 1:00:00 tp = convert(civil_second(2013, 11, 3, 1, 59, 59), tz); ExpectTime(tp, tz, 2013, 11, 3, 1, 59, 59, -4 * 3600, true, "EDT"); - tp += seconds(1); + tp += absl::time_internal::cctz::seconds(1); ExpectTime(tp, tz, 2013, 11, 3, 1, 0, 0, -5 * 3600, false, "EST"); } @@ -1005,13 +1180,13 @@ TEST(TimeZoneEdgeCase, AmericaLosAngeles) { // Spring 1:59:59 -> 3:00:00 auto tp = convert(civil_second(2013, 3, 10, 1, 59, 59), tz); ExpectTime(tp, tz, 2013, 3, 10, 1, 59, 59, -8 * 3600, false, "PST"); - tp += seconds(1); + tp += absl::time_internal::cctz::seconds(1); ExpectTime(tp, tz, 2013, 3, 10, 3, 0, 0, -7 * 3600, true, "PDT"); // Fall 1:59:59 -> 1:00:00 tp = convert(civil_second(2013, 11, 3, 1, 59, 59), tz); ExpectTime(tp, tz, 2013, 11, 3, 1, 59, 59, -7 * 3600, true, "PDT"); - tp += seconds(1); + tp += absl::time_internal::cctz::seconds(1); ExpectTime(tp, tz, 2013, 11, 3, 1, 0, 0, -8 * 3600, false, "PST"); } @@ -1021,13 +1196,13 @@ TEST(TimeZoneEdgeCase, ArizonaNoTransition) { // No transition in Spring. auto tp = convert(civil_second(2013, 3, 10, 1, 59, 59), tz); ExpectTime(tp, tz, 2013, 3, 10, 1, 59, 59, -7 * 3600, false, "MST"); - tp += seconds(1); + tp += absl::time_internal::cctz::seconds(1); ExpectTime(tp, tz, 2013, 3, 10, 2, 0, 0, -7 * 3600, false, "MST"); // No transition in Fall. tp = convert(civil_second(2013, 11, 3, 1, 59, 59), tz); ExpectTime(tp, tz, 2013, 11, 3, 1, 59, 59, -7 * 3600, false, "MST"); - tp += seconds(1); + tp += absl::time_internal::cctz::seconds(1); ExpectTime(tp, tz, 2013, 11, 3, 2, 0, 0, -7 * 3600, false, "MST"); } @@ -1040,7 +1215,7 @@ TEST(TimeZoneEdgeCase, AsiaKathmandu) { // 504901800 == Wed, 1 Jan 1986 00:15:00 +0545 (+0545) auto tp = convert(civil_second(1985, 12, 31, 23, 59, 59), tz); ExpectTime(tp, tz, 1985, 12, 31, 23, 59, 59, 5.5 * 3600, false, "+0530"); - tp += seconds(1); + tp += absl::time_internal::cctz::seconds(1); ExpectTime(tp, tz, 1986, 1, 1, 0, 15, 0, 5.75 * 3600, false, "+0545"); } @@ -1053,14 +1228,14 @@ TEST(TimeZoneEdgeCase, PacificChatham) { // 1365256800 == Sun, 7 Apr 2013 02:45:00 +1245 (+1245) auto tp = convert(civil_second(2013, 4, 7, 3, 44, 59), tz); ExpectTime(tp, tz, 2013, 4, 7, 3, 44, 59, 13.75 * 3600, true, "+1345"); - tp += seconds(1); + tp += absl::time_internal::cctz::seconds(1); ExpectTime(tp, tz, 2013, 4, 7, 2, 45, 0, 12.75 * 3600, false, "+1245"); // 1380376799 == Sun, 29 Sep 2013 02:44:59 +1245 (+1245) // 1380376800 == Sun, 29 Sep 2013 03:45:00 +1345 (+1345) tp = convert(civil_second(2013, 9, 29, 2, 44, 59), tz); ExpectTime(tp, tz, 2013, 9, 29, 2, 44, 59, 12.75 * 3600, false, "+1245"); - tp += seconds(1); + tp += absl::time_internal::cctz::seconds(1); ExpectTime(tp, tz, 2013, 9, 29, 3, 45, 0, 13.75 * 3600, true, "+1345"); } @@ -1073,14 +1248,14 @@ TEST(TimeZoneEdgeCase, AustraliaLordHowe) { // 1365260400 == Sun, 7 Apr 2013 01:30:00 +1030 (+1030) auto tp = convert(civil_second(2013, 4, 7, 1, 59, 59), tz); ExpectTime(tp, tz, 2013, 4, 7, 1, 59, 59, 11 * 3600, true, "+11"); - tp += seconds(1); + tp += absl::time_internal::cctz::seconds(1); ExpectTime(tp, tz, 2013, 4, 7, 1, 30, 0, 10.5 * 3600, false, "+1030"); // 1380986999 == Sun, 6 Oct 2013 01:59:59 +1030 (+1030) // 1380987000 == Sun, 6 Oct 2013 02:30:00 +1100 (+11) tp = convert(civil_second(2013, 10, 6, 1, 59, 59), tz); ExpectTime(tp, tz, 2013, 10, 6, 1, 59, 59, 10.5 * 3600, false, "+1030"); - tp += seconds(1); + tp += absl::time_internal::cctz::seconds(1); ExpectTime(tp, tz, 2013, 10, 6, 2, 30, 0, 11 * 3600, true, "+11"); } @@ -1098,7 +1273,7 @@ TEST(TimeZoneEdgeCase, PacificApia) { auto tp = convert(civil_second(2011, 12, 29, 23, 59, 59), tz); ExpectTime(tp, tz, 2011, 12, 29, 23, 59, 59, -10 * 3600, true, "-10"); EXPECT_EQ(363, get_yearday(civil_day(convert(tp, tz)))); - tp += seconds(1); + tp += absl::time_internal::cctz::seconds(1); ExpectTime(tp, tz, 2011, 12, 31, 0, 0, 0, 14 * 3600, true, "+14"); EXPECT_EQ(365, get_yearday(civil_day(convert(tp, tz)))); } @@ -1106,35 +1281,31 @@ TEST(TimeZoneEdgeCase, PacificApia) { TEST(TimeZoneEdgeCase, AfricaCairo) { const time_zone tz = LoadZone("Africa/Cairo"); -#if defined(__ANDROID__) && __ANDROID_API__ < 21 - // Only Android 'L' and beyond have this tz2014c transition. -#else - // An interesting case of midnight not existing. - // - // 1400191199 == Thu, 15 May 2014 23:59:59 +0200 (EET) - // 1400191200 == Fri, 16 May 2014 01:00:00 +0300 (EEST) - auto tp = convert(civil_second(2014, 5, 15, 23, 59, 59), tz); - ExpectTime(tp, tz, 2014, 5, 15, 23, 59, 59, 2 * 3600, false, "EET"); - tp += seconds(1); - ExpectTime(tp, tz, 2014, 5, 16, 1, 0, 0, 3 * 3600, true, "EEST"); -#endif + if (VersionCmp(tz, "2014c") >= 0) { + // An interesting case of midnight not existing. + // + // 1400191199 == Thu, 15 May 2014 23:59:59 +0200 (EET) + // 1400191200 == Fri, 16 May 2014 01:00:00 +0300 (EEST) + auto tp = convert(civil_second(2014, 5, 15, 23, 59, 59), tz); + ExpectTime(tp, tz, 2014, 5, 15, 23, 59, 59, 2 * 3600, false, "EET"); + tp += absl::time_internal::cctz::seconds(1); + ExpectTime(tp, tz, 2014, 5, 16, 1, 0, 0, 3 * 3600, true, "EEST"); + } } TEST(TimeZoneEdgeCase, AfricaMonrovia) { const time_zone tz = LoadZone("Africa/Monrovia"); -#if defined(__ANDROID__) && __ANDROID_API__ < 26 - // Only Android 'O' and beyond have this tz2017b transition. -#else - // Strange offset change -00:44:30 -> +00:00:00 (non-DST) - // - // 63593069 == Thu, 6 Jan 1972 23:59:59 -0044 (MMT) - // 63593070 == Fri, 7 Jan 1972 00:44:30 +0000 (GMT) - auto tp = convert(civil_second(1972, 1, 6, 23, 59, 59), tz); - ExpectTime(tp, tz, 1972, 1, 6, 23, 59, 59, -44.5 * 60, false, "MMT"); - tp += seconds(1); - ExpectTime(tp, tz, 1972, 1, 7, 0, 44, 30, 0 * 60, false, "GMT"); -#endif + if (VersionCmp(tz, "2017b") >= 0) { + // Strange offset change -00:44:30 -> +00:00:00 (non-DST) + // + // 63593069 == Thu, 6 Jan 1972 23:59:59 -0044 (MMT) + // 63593070 == Fri, 7 Jan 1972 00:44:30 +0000 (GMT) + auto tp = convert(civil_second(1972, 1, 6, 23, 59, 59), tz); + ExpectTime(tp, tz, 1972, 1, 6, 23, 59, 59, -44.5 * 60, false, "MMT"); + tp += absl::time_internal::cctz::seconds(1); + ExpectTime(tp, tz, 1972, 1, 7, 0, 44, 30, 0 * 60, false, "GMT"); + } } TEST(TimeZoneEdgeCase, AmericaJamaica) { @@ -1146,30 +1317,31 @@ TEST(TimeZoneEdgeCase, AmericaJamaica) { const time_zone tz = LoadZone("America/Jamaica"); // Before the first transition. - auto tp = convert(civil_second(1889, 12, 31, 0, 0, 0), tz); -#if AMERICA_JAMAICA_PRE_1913_OFFSET_FIX - // Commit 907241e: Fix off-by-1 error for Jamaica and T&C before 1913. - // Until that commit has made its way into a full release we avoid the - // expectations on the -18430 offset below. TODO: Uncomment these. - ExpectTime(tp, tz, 1889, 12, 31, 0, 0, 0, -18430, false, - tz.lookup(tp).abbr); - - // Over the first (abbreviation-change only) transition. - // -2524503170 == Tue, 31 Dec 1889 23:59:59 -0507 (LMT) - // -2524503169 == Wed, 1 Jan 1890 00:00:00 -0507 (KMT) - tp = convert(civil_second(1889, 12, 31, 23, 59, 59), tz); - ExpectTime(tp, tz, 1889, 12, 31, 23, 59, 59, -18430, false, - tz.lookup(tp).abbr); - tp += seconds(1); - ExpectTime(tp, tz, 1890, 1, 1, 0, 0, 0, -18430, false, "KMT"); -#endif + if (!tz.version().empty() && VersionCmp(tz, "2018d") >= 0) { + // We avoid the expectations on the -18430 offset below unless we are + // certain we have commit 907241e (Fix off-by-1 error for Jamaica and + // T&C before 1913) from 2018d. TODO: Remove the "version() not empty" + // part when 2018d is generally available from /usr/share/zoneinfo. + auto tp = convert(civil_second(1889, 12, 31, 0, 0, 0), tz); + ExpectTime(tp, tz, 1889, 12, 31, 0, 0, 0, -18430, false, + tz.lookup(tp).abbr); + + // Over the first (abbreviation-change only) transition. + // -2524503170 == Tue, 31 Dec 1889 23:59:59 -0507 (LMT) + // -2524503169 == Wed, 1 Jan 1890 00:00:00 -0507 (KMT) + tp = convert(civil_second(1889, 12, 31, 23, 59, 59), tz); + ExpectTime(tp, tz, 1889, 12, 31, 23, 59, 59, -18430, false, + tz.lookup(tp).abbr); + tp += absl::time_internal::cctz::seconds(1); + ExpectTime(tp, tz, 1890, 1, 1, 0, 0, 0, -18430, false, "KMT"); + } // Over the last (DST) transition. // 436341599 == Sun, 30 Oct 1983 01:59:59 -0400 (EDT) // 436341600 == Sun, 30 Oct 1983 01:00:00 -0500 (EST) - tp = convert(civil_second(1983, 10, 30, 1, 59, 59), tz); + auto tp = convert(civil_second(1983, 10, 30, 1, 59, 59), tz); ExpectTime(tp, tz, 1983, 10, 30, 1, 59, 59, -4 * 3600, true, "EDT"); - tp += seconds(1); + tp += absl::time_internal::cctz::seconds(1); ExpectTime(tp, tz, 1983, 10, 30, 1, 0, 0, -5 * 3600, false, "EST"); // After the last transition. @@ -1190,7 +1362,7 @@ TEST(TimeZoneEdgeCase, WET) { // 228877200 == Sun, 3 Apr 1977 02:00:00 +0100 (WEST) tp = convert(civil_second(1977, 4, 3, 0, 59, 59), tz); ExpectTime(tp, tz, 1977, 4, 3, 0, 59, 59, 0, false, "WET"); - tp += seconds(1); + tp += absl::time_internal::cctz::seconds(1); ExpectTime(tp, tz, 1977, 4, 3, 2, 0, 0, 1 * 3600, true, "WEST"); // A non-existent time within the first transition. @@ -1212,12 +1384,12 @@ TEST(TimeZoneEdgeCase, FixedOffsets) { const time_zone gmtm5 = LoadZone("Etc/GMT+5"); // -0500 auto tp = convert(civil_second(1970, 1, 1, 0, 0, 0), gmtm5); ExpectTime(tp, gmtm5, 1970, 1, 1, 0, 0, 0, -5 * 3600, false, "-05"); - EXPECT_EQ(system_clock::from_time_t(5 * 3600), tp); + EXPECT_EQ(chrono::system_clock::from_time_t(5 * 3600), tp); const time_zone gmtp5 = LoadZone("Etc/GMT-5"); // +0500 tp = convert(civil_second(1970, 1, 1, 0, 0, 0), gmtp5); ExpectTime(tp, gmtp5, 1970, 1, 1, 0, 0, 0, 5 * 3600, false, "+05"); - EXPECT_EQ(system_clock::from_time_t(-5 * 3600), tp); + EXPECT_EQ(chrono::system_clock::from_time_t(-5 * 3600), tp); } TEST(TimeZoneEdgeCase, NegativeYear) { @@ -1226,7 +1398,7 @@ TEST(TimeZoneEdgeCase, NegativeYear) { auto tp = convert(civil_second(0, 1, 1, 0, 0, 0), tz); ExpectTime(tp, tz, 0, 1, 1, 0, 0, 0, 0 * 3600, false, "UTC"); EXPECT_EQ(weekday::saturday, get_weekday(civil_day(convert(tp, tz)))); - tp -= seconds(1); + tp -= absl::time_internal::cctz::seconds(1); ExpectTime(tp, tz, -1, 12, 31, 23, 59, 59, 0 * 3600, false, "UTC"); EXPECT_EQ(weekday::friday, get_weekday(civil_day(convert(tp, tz)))); } @@ -1240,7 +1412,7 @@ TEST(TimeZoneEdgeCase, UTC32bitLimit) { // 2147483648 == Tue, 19 Jan 2038 03:14:08 +0000 (UTC) auto tp = convert(civil_second(2038, 1, 19, 3, 14, 7), tz); ExpectTime(tp, tz, 2038, 1, 19, 3, 14, 7, 0 * 3600, false, "UTC"); - tp += seconds(1); + tp += absl::time_internal::cctz::seconds(1); ExpectTime(tp, tz, 2038, 1, 19, 3, 14, 8, 0 * 3600, false, "UTC"); } @@ -1253,11 +1425,11 @@ TEST(TimeZoneEdgeCase, UTC5DigitYear) { // 253402300800 == Sat, 1 Jan 1000 00:00:00 +0000 (UTC) auto tp = convert(civil_second(9999, 12, 31, 23, 59, 59), tz); ExpectTime(tp, tz, 9999, 12, 31, 23, 59, 59, 0 * 3600, false, "UTC"); - tp += seconds(1); + tp += absl::time_internal::cctz::seconds(1); ExpectTime(tp, tz, 10000, 1, 1, 0, 0, 0, 0 * 3600, false, "UTC"); } } // namespace cctz } // namespace time_internal -} // inline namespace lts_2018_06_20 +} // inline namespace lts_2018_12_18 } // namespace absl |