diff options
Diffstat (limited to 'libcxx/test/std/time/time.zone/time.zone.db/time.zone.db.tzdb/current_zone.pass.cpp')
-rw-r--r-- | libcxx/test/std/time/time.zone/time.zone.db/time.zone.db.tzdb/current_zone.pass.cpp | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/libcxx/test/std/time/time.zone/time.zone.db/time.zone.db.tzdb/current_zone.pass.cpp b/libcxx/test/std/time/time.zone/time.zone.db/time.zone.db.tzdb/current_zone.pass.cpp new file mode 100644 index 000000000000..7b4218cc8421 --- /dev/null +++ b/libcxx/test/std/time/time.zone/time.zone.db/time.zone.db.tzdb/current_zone.pass.cpp @@ -0,0 +1,79 @@ +//===----------------------------------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +// UNSUPPORTED: c++03, c++11, c++14, c++17 +// UNSUPPORTED: no-filesystem, no-localization, no-tzdb + +// XFAIL: libcpp-has-no-incomplete-tzdb +// XFAIL: availability-tzdb-missing + +// <chrono> + +// struct tzdb + +// const time_zone* current_zone() const; + +#include <cassert> +#include <chrono> +#include <string_view> +#include <stdlib.h> + +#include "test_macros.h" +#include "assert_macros.h" +#include "concat_macros.h" + +#ifdef _WIN32 +static void set_tz(std::string zone) { + // Note Windows does not have setenv, only putenv + // https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/putenv-s-wputenv-s?view=msvc-170 + // Unlike POSIX it does not mention the string of putenv becomes part + // of the environment. + + int status = _putenv_s("TZ", zone.c_str(), 1); + assert(status == 0); +} + +#else +static void set_tz(const std::string& zone) { + int status = setenv("TZ", zone.c_str(), 1); + assert(status == 0); +} +#endif + +static void test_zone(const std::string& zone) { + set_tz(zone); + const std::chrono::time_zone* tz = std::chrono::get_tzdb().current_zone(); + assert(tz); + assert(tz->name() == zone); +} + +static void test_link(const std::string& link, std::string_view zone) { + set_tz(link); + const std::chrono::time_zone* tz = std::chrono::get_tzdb().current_zone(); + assert(tz); + assert(tz->name() == zone); +} + +int main(int, const char**) { + const std::chrono::time_zone* tz = std::chrono::get_tzdb().current_zone(); + // Returns a valid time zone, the value depends on the OS settings. + assert(tz); + // setting the environment to an invalid value returns the value of + // the OS setting. + set_tz("This is not a time zone"); + assert(tz == std::chrono::get_tzdb().current_zone()); + + const std::chrono::tzdb& db = std::chrono::get_tzdb(); + for (const auto& zone : db.zones) + test_zone(std::string{zone.name()}); + + for (const auto& link : db.links) + test_link(std::string{link.name()}, link.target()); + + return 0; +} |