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systemclock: Add test for gst_clock_get_resolution

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In a series of time measurements, the diff between now and previous
timestamps is either 0 or at least as long as get_resolution returned.

https://bugzilla.gnome.org/show_bug.cgi?id=758012
This commit is contained in:
Heinrich Fink 2015-11-12 16:14:18 +01:00 committed by Sebastian Dröge
parent d59022f508
commit 87691d0280
1 changed files with 31 additions and 0 deletions
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31
tests/check/gst/gstsystemclock.c
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@ -670,6 +670,36 @@ GST_START_TEST (test_async_full)
GST_END_TEST;
GST_START_TEST (test_resolution)
{
GstClock *clock;
GstClockTime now_t, prev_t, resolution;
int i;
now_t = prev_t = GST_CLOCK_TIME_NONE;
clock = gst_system_clock_obtain ();
fail_unless (clock != NULL, "Could not create default system clock");
resolution = gst_clock_get_resolution (clock);
fail_unless (resolution != GST_CLOCK_TIME_NONE);
for (i = 0; i < 100000; ++i) {
now_t = gst_clock_get_internal_time (clock);
fail_unless (now_t != GST_CLOCK_TIME_NONE);
if (prev_t != GST_CLOCK_TIME_NONE) {
GstClockTime diff;
fail_unless (now_t >= prev_t);
diff = now_t - prev_t;
fail_unless (diff == 0 || diff >= resolution);
}
prev_t = now_t;
g_thread_yield ();
}
g_object_unref (clock);
clock = NULL;
}
GST_END_TEST;
static Suite *
gst_systemclock_suite (void)
{
@ -688,6 +718,7 @@ gst_systemclock_suite (void)
tcase_add_test (tc_chain, test_mixed);
tcase_add_test (tc_chain, test_async_full);
tcase_add_test (tc_chain, test_set_default);
tcase_add_test (tc_chain, test_resolution);
return s;
}