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tests: Move GlobalTimezoneFixture to utils file

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Prepare for adding test cases for DST changes in other files as well.
This commit is contained in:
Julian Brost 2025-04-24 17:05:31 +02:00
parent 2458f686db
commit 17c96783cf
3 changed files with 55 additions and 46 deletions
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48
test/icinga-legacytimeperiod.cpp
View File

@ -16,52 +16,8 @@ using namespace icinga;
BOOST_AUTO_TEST_SUITE(icinga_legacytimeperiod);
struct GlobalTimezoneFixture
{
char *tz;
GlobalTimezoneFixture(const char *fixed_tz = "")
{
tz = getenv("TZ");
#ifdef _WIN32
_putenv_s("TZ", fixed_tz == "" ? "UTC" : fixed_tz);
#else
setenv("TZ", fixed_tz, 1);
#endif
tzset();
}
~GlobalTimezoneFixture()
{
#ifdef _WIN32
if (tz)
_putenv_s("TZ", tz);
else
_putenv_s("TZ", "");
#else
if (tz)
setenv("TZ", tz, 1);
else
unsetenv("TZ");
#endif
tzset();
}
};
BOOST_GLOBAL_FIXTURE(GlobalTimezoneFixture);
// DST changes in America/Los_Angeles:
// 2021-03-14: 01:59:59 PST (UTC-8) -> 03:00:00 PDT (UTC-7)
// 2021-11-07: 01:59:59 PDT (UTC-7) -> 01:00:00 PST (UTC-8)
#ifndef _WIN32
static const char *dst_test_timezone = "America/Los_Angeles";
#else /* _WIN32 */
// Tests are using pacific time because Windows only really supports timezones following US DST rules with the TZ
// environment variable. Format is "[Standard TZ][negative UTC offset][DST TZ]".
// https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/tzset?view=msvc-160#remarks
static const char *dst_test_timezone = "PST8PDT";
#endif /* _WIN32 */
BOOST_AUTO_TEST_CASE(simple)
{
tm tm_beg, tm_end, tm_ref;
@ -523,7 +479,7 @@ std::ostream& operator<<(std::ostream& o, const boost::optional<Segment>& s)
BOOST_AUTO_TEST_CASE(dst)
{
GlobalTimezoneFixture tz(dst_test_timezone);
GlobalTimezoneFixture tz(GlobalTimezoneFixture::TestTimezoneWithDST);
// Self-tests for helper functions
BOOST_CHECK_EQUAL(make_tm("2021-11-07 02:30:00").tm_isdst, -1);
@ -802,7 +758,7 @@ BOOST_AUTO_TEST_CASE(dst)
// This tests checks that TimePeriod::IsInside() always returns true for a 24x7 period, even around DST changes.
BOOST_AUTO_TEST_CASE(dst_isinside)
{
GlobalTimezoneFixture tz(dst_test_timezone);
GlobalTimezoneFixture tz(GlobalTimezoneFixture::TestTimezoneWithDST);
Function::Ptr update = new Function("LegacyTimePeriod", LegacyTimePeriod::ScriptFunc, {"tp", "begin", "end"});
Dictionary::Ptr ranges = new Dictionary({

36
test/utils.cpp
View File

@ -29,3 +29,39 @@ tm make_tm(std::string s)
return t;
}
#ifndef _WIN32
const char *GlobalTimezoneFixture::TestTimezoneWithDST = "America/Los_Angeles";
#else /* _WIN32 */
// Tests are using pacific time because Windows only really supports timezones following US DST rules with the TZ
// environment variable. Format is "[Standard TZ][negative UTC offset][DST TZ]".
// https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/tzset?view=msvc-160#remarks
const char *GlobalTimezoneFixture::TestTimezoneWithDST = "PST8PDT";
#endif /* _WIN32 */
GlobalTimezoneFixture::GlobalTimezoneFixture(const char *fixed_tz)
{
tz = getenv("TZ");
#ifdef _WIN32
_putenv_s("TZ", fixed_tz == "" ? "UTC" : fixed_tz);
#else
setenv("TZ", fixed_tz, 1);
#endif
tzset();
}
GlobalTimezoneFixture::~GlobalTimezoneFixture()
{
#ifdef _WIN32
if (tz)
_putenv_s("TZ", tz);
else
_putenv_s("TZ", "");
#else
if (tz)
setenv("TZ", tz, 1);
else
unsetenv("TZ");
#endif
tzset();
}

17
test/utils.hpp
View File

@ -6,3 +6,20 @@
#include <string>
tm make_tm(std::string s);
struct GlobalTimezoneFixture
{
/**
* Timezone used for testing DST changes.
*
* DST changes in America/Los_Angeles:
* 2021-03-14: 01:59:59 PST (UTC-8) -> 03:00:00 PDT (UTC-7)
* 2021-11-07: 01:59:59 PDT (UTC-7) -> 01:00:00 PST (UTC-8)
*/
static const char *TestTimezoneWithDST;
GlobalTimezoneFixture(const char *fixed_tz = "");
~GlobalTimezoneFixture();
char *tz;
};