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test: improve hwclock unit test

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This commit is contained in:
Miroslav Lichvar 2017-08-04 15:24:03 +02:00
parent 4534db84c4
commit c2773dbc2f
1 changed files with 14 additions and 6 deletions
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20
test/unit/hwclock.c
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@ -26,14 +26,14 @@ test_unit(void)
{
struct timespec start_hw_ts, start_local_ts, hw_ts, local_ts, ts;
HCL_Instance clock;
double freq, jitter, interval, d;
int i, j;
double freq, jitter, interval, dj, sum;
int i, j, count;
LCL_Initialise();
clock = HCL_CreateInstance(1.0);
for (i = 0; i < 2000; i++) {
for (i = 0, count = 0, sum = 0.0; i < 2000; i++) {
UTI_ZeroTimespec(&start_hw_ts);
UTI_ZeroTimespec(&start_local_ts);
UTI_AddDoubleToTimespec(&start_hw_ts, TST_GetRandomDouble(0.0, 1e9), &start_hw_ts);
@ -49,13 +49,19 @@ test_unit(void)
clock->valid_coefs = 0;
for (j = 0; j < 100; j++) {
UTI_AddDoubleToTimespec(&start_hw_ts, j * interval * freq + TST_GetRandomDouble(-jitter, jitter), &hw_ts);
UTI_AddDoubleToTimespec(&start_hw_ts, j * interval * freq, &hw_ts);
UTI_AddDoubleToTimespec(&start_local_ts, j * interval, &local_ts);
if (HCL_CookTime(clock, &hw_ts, &ts, NULL)) {
d = UTI_DiffTimespecsToDouble(&ts, &local_ts);
TEST_CHECK(fabs(d) <= 5.0 * jitter);
dj = fabs(UTI_DiffTimespecsToDouble(&ts, &local_ts) / jitter);
DEBUG_LOG("delta/jitter %f", dj);
if (clock->n_samples >= 8)
sum += dj, count++;
TEST_CHECK(clock->n_samples < 4 || dj <= 4.0);
TEST_CHECK(clock->n_samples < 8 || dj <= 3.0);
}
UTI_AddDoubleToTimespec(&start_hw_ts, j * interval * freq + TST_GetRandomDouble(-jitter, jitter), &hw_ts);
if (HCL_NeedsNewSample(clock, &local_ts))
HCL_AccumulateSample(clock, &hw_ts, &local_ts, 2.0 * jitter);
@ -68,6 +74,8 @@ test_unit(void)
}
}
TEST_CHECK(sum / count < 0.4);
HCL_DestroyInstance(clock);
LCL_Finalise();