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fix: timer tests
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light7734 2025-07-17 11:26:54 +03:30
parent 6f1a3a291f
commit 3e79504fac
Signed by: light7734
GPG key ID: 8C30176798F1A6BA
1 changed files with 10 additions and 4 deletions
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14
modules/time/src/timer.tests.cpp
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@ -6,6 +6,12 @@ namespace lt {
using lt::test::expect_le; using lt::test::expect_le;
// error margin is high since run-time may slow down extremely due to
// sanitization/debugging or execution through valgrind...
//
// <1us error margin is tested manually in release builds and it works fine.
constexpr auto max_error_margin = std::chrono::milliseconds { 1 };
lt::test::Suite raii = [] { lt::test::Suite raii = [] {
using std::chrono::microseconds; using std::chrono::microseconds;
@ -34,14 +40,14 @@ lt::test::Suite reset_and_elapsed_time = [] {
}; };
lt::test::Case { "elapsed time is sane" } = [] { lt::test::Case { "elapsed time is sane" } = [] {
expect_le(Timer {}.elapsed_time(), microseconds { 1 }); expect_le(Timer {}.elapsed_time(), max_error_margin);
}; };
lt::test::Case { "elapsed time is sane - constructed with old now" } = [] { lt::test::Case { "elapsed time is sane - constructed with old now" } = [] {
const auto timepoint = Timer::Clock::now() - hours { 1 }; const auto timepoint = Timer::Clock::now() - hours { 1 };
// This fails sometimes in debug if error-range is under 10us // This fails sometimes in debug if error-range is under 10us
expect_le(Timer { timepoint }.elapsed_time(), hours { 1 } + microseconds { 30 }); expect_le(Timer { timepoint }.elapsed_time(), hours { 1 } + max_error_margin);
}; };
lt::test::Case { "reset -> elapsed time is sane - constructed with old now" } = [] { lt::test::Case { "reset -> elapsed time is sane - constructed with old now" } = [] {
@ -49,7 +55,7 @@ lt::test::Suite reset_and_elapsed_time = [] {
const auto old_elapsed_time = timer.elapsed_time(); const auto old_elapsed_time = timer.elapsed_time();
timer.reset(); timer.reset();
expect_le(timer.elapsed_time() - old_elapsed_time, microseconds { 101 }); expect_le(timer.elapsed_time() - old_elapsed_time, microseconds { 100 } + max_error_margin);
}; };
lt::test::Case { "reset -> elapsed time is sane - reset with future now" } = [] { lt::test::Case { "reset -> elapsed time is sane - reset with future now" } = [] {
@ -57,7 +63,7 @@ lt::test::Suite reset_and_elapsed_time = [] {
const auto old_elapsed_time = timer.elapsed_time(); const auto old_elapsed_time = timer.elapsed_time();
timer.reset(Timer::Clock::now() + microseconds { 100 }); timer.reset(Timer::Clock::now() + microseconds { 100 });
expect_le(timer.elapsed_time() - old_elapsed_time, microseconds { 101 }); expect_le(timer.elapsed_time() - old_elapsed_time, microseconds { 100 } + max_error_margin);
}; };
}; };