141299fb80
Commit a1d21ca69b ("tests: timer_behavior: don't fail the test with
timer wrap-arounds") simply ignored the total time validation whenever
any rollover was detected. Let's adjust the end timestamp according
to the number of rollovers instead.
Documentation for sys_clock_cycle_get_32() says it should count up
monotonically through the full 32 bit space, wrapping at 0xffffffff.
Therefore we just need to add 2^32 times the number of rollovers to
the end timestamp.
Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
# Test a timer implementations variance and long term drift Records and calculates statistical values against a timer validating that. 1. Timer variance and standard deviation is below defined acceptable values. 2. Periodic timers do not drift in either direction from expected total time. Timers are meant to be precise and accurate. This test validates an implementation is both.