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gsm0408_test: add unittest for gsm_gsmtime2fn() 

The function gsm_gsmtime2fn(), which is used to compute a frame number
value from given starting time values T1, T2 and T3 has no unit test.
Due to to the modulo that is used the computation can be a bit tricky.
Lets add a unit-test to make sure the function works as expected.

Change-Id: I8b9b71c8dcccf3b44326b5e61229f4637689d763
This commit is contained in:
Philipp Maier 2023-01-12 12:52:57 +01:00
parent 94705d042a
commit b6a3836ad2
1 changed files with 22 additions and 0 deletions
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22
tests/gsm0408/gsm0408_test.c
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@ -1760,6 +1760,27 @@ static void test_rach_tx_integer_raw2val(void)
}
}
static void test_gsm_gsmtime2fn(void)
{
struct gsm_time gsm_time;
uint32_t fn;
uint32_t fn_recovered;
for (fn = 0; fn < 42432; fn++) {
gsm_time.t1 = (fn / 1326) % 32;
gsm_time.t2 = fn % 26;
gsm_time.t3 = fn % 51;
fn_recovered = gsm_gsmtime2fn(&gsm_time);
if (fn_recovered != fn) {
printf(" Wrong frame number computed! t1=%d, t2=%d, t3=%d ==> fn=%d, expected fn=%d\n",
gsm_time.t1, gsm_time.t2, gsm_time.t3, fn_recovered, fn);
OSMO_ASSERT(false);
}
}
}
int main(int argc, char **argv)
{
test_bearer_cap();
@ -1779,6 +1800,7 @@ int main(int argc, char **argv)
test_range_encoding();
test_power_ctrl();
test_rach_tx_integer_raw2val();
test_gsm_gsmtime2fn();
return EXIT_SUCCESS;
}