validation: random: shorten some tests with ARM RNG

Two of the randomness tests are too slow with ARM RNG true
random. Limit the time that those tests are allowed to run. This saves
about 60 seconds in some environments.

Signed-off-by: Jere Leppänen <jere.leppanen@nokia.com>

test/validation/api/random/random.c

@@ -232,6 +232,8 @@ static void random_test_frequency(odp_random_kind_t kind)
 
 	printf("\n\n");
 
+	uint64_t start = odp_time_local_ns();
+
 	for (int bits = 1; bits <= 8; bits++) {
 		const uint32_t cells = 1 << bits;
 		const uint64_t num = expected * cells;
@@ -252,6 +254,9 @@ static void random_test_frequency(odp_random_kind_t kind)
 		       bits, chisq, cells - 1, crit, res_str(chisq < crit));
 
 		CU_ASSERT(chisq < crit);
+
+		if (odp_time_local_ns() - start > 5 * ODP_TIME_SEC_IN_NS)
+			break;
 	}
 
 	printf("\n");
@@ -342,6 +347,8 @@ static void random_test_runs(odp_random_kind_t kind)
 	printf("\n\n");
 	printf("alpha: %g\n", alpha);
 
+	uint64_t start = odp_time_local_ns();
+
 	for (int n = 128; n <= 1024 * 1024; n *= 2) {
 		double pi, P_value;
 		int bit = random_bits(1, kind);
@@ -358,17 +365,20 @@ static void random_test_runs(odp_random_kind_t kind)
 		pi = (double)ones / n;
 
 		/*
-			* Skip the prerequisite frequency test (Sec. 2.3.4
-			* step (2)), since it's effectively the same as
-			* random_test_frequency() with bits = 1.
-			*/
+		 * Skip the prerequisite frequency test (Sec. 2.3.4 step (2)),
+		 * since it's effectively the same as random_test_frequency()
+		 * with bits = 1.
+		 */
 
 		P_value = erfc(fabs(V - 2 * n * pi * (1 - pi)) /
 				(2 * sqrt(2 * n) * pi * (1 - pi)));
 		printf("n %d ; pi %g ; V %" PRIu64 " ; P_value %g ; %s\n",
 		       n, pi, V, P_value, res_str(P_value >= alpha));
 
 		CU_ASSERT(P_value >= alpha);
+
+		if (odp_time_local_ns() - start > 5 * ODP_TIME_SEC_IN_NS)
+			break;
 	}
 
 	printf("\n");