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Add tests for Utility::FormatDateTime()

This commit is contained in:
Julian Brost 2024-08-21 10:55:09 +02:00
parent a8adfeda60
commit 090dcfd70f
2 changed files with 50 additions and 0 deletions
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1
test/CMakeLists.txt
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@ -128,6 +128,7 @@ add_boost_test(base
base_utility/validateutf8
base_utility/EscapeCreateProcessArg
base_utility/TruncateUsingHash
base_utility/FormatDateTime
base_value/scalar
base_value/convert
base_value/format

49
test/base-utility.cpp
View File

@ -135,4 +135,53 @@ BOOST_AUTO_TEST_CASE(TruncateUsingHash)
std::string(37, 'a') + "...86f33652fcffd7fa1443e246dd34fe5d00e25ffd");
}
BOOST_AUTO_TEST_CASE(FormatDateTime) {
using time_t_limit = std::numeric_limits<time_t>;
// Helper to repeat a given string a number of times.
auto repeat = [](const std::string& s, size_t n) {
std::ostringstream stream;
for (size_t i = 0; i < n; ++i) {
stream << s;
}
return stream.str();
};
// Valid inputs.
const double ts = 1136214245.0; // 2006-01-02 15:04:05 UTC
BOOST_CHECK_EQUAL("2006-01-02 15:04:05", Utility::FormatDateTime("%F %T", ts));
BOOST_CHECK_EQUAL("2006", Utility::FormatDateTime("%Y", ts));
BOOST_CHECK_EQUAL("2006#2006", Utility::FormatDateTime("%Y#%Y", ts));
BOOST_CHECK_EQUAL("%", Utility::FormatDateTime("%%", ts));
BOOST_CHECK_EQUAL("%Y", Utility::FormatDateTime("%%Y", ts));
BOOST_CHECK_EQUAL("", Utility::FormatDateTime("", ts));
BOOST_CHECK_EQUAL("1970-01-01 00:00:00", Utility::FormatDateTime("%F %T", 0.0));
BOOST_CHECK_EQUAL("2038-01-19 03:14:07", Utility::FormatDateTime("%F %T", 2147483647.0)); // 2^31 - 1
if constexpr (sizeof(time_t) > sizeof(int32_t)) {
BOOST_CHECK_EQUAL("2100-03-14 13:37:42", Utility::FormatDateTime("%F %T", 4108714662.0)); // Past year 2038
} else {
BOOST_WARN_MESSAGE(false, "skipping test with past 2038 input due to 32 bit time_t");
}
// Negative (pre-1970) timestamps.
#ifdef _MSC_VER
// localtime_s() on Windows doesn't seem to like them and always errors out.
BOOST_CHECK_THROW(Utility::FormatDateTime("%F %T", -1.0), posix_error);
BOOST_CHECK_THROW(Utility::FormatDateTime("%F %T", -2147483648.0), posix_error); // -2^31
#else /* _MSC_VER */
BOOST_CHECK_EQUAL("1969-12-31 23:59:59", Utility::FormatDateTime("%F %T", -1.0));
BOOST_CHECK_EQUAL("1901-12-13 20:45:52", Utility::FormatDateTime("%F %T", -2147483648.0)); // -2^31
#endif /* _MSC_VER */
// Values right at the limits of time_t.
//
// With 64 bit time_t, there may not be an exact double representation of its min/max value, std::nextafter() is
// used to move the value towards 0 so that it's within the range of doubles that can be represented as time_t.
//
// These are expected to result in an error due to the intermediate struct tm not being able to represent these
// timestamps, so localtime_r() returns EOVERFLOW which makes the implementation throw an exception.
BOOST_CHECK_THROW(Utility::FormatDateTime("%Y", std::nextafter(time_t_limit::min(), 0)), posix_error);
BOOST_CHECK_THROW(Utility::FormatDateTime("%Y", std::nextafter(time_t_limit::max(), 0)), posix_error);
}
BOOST_AUTO_TEST_SUITE_END()