gsm0408_test: Verify that BA-IND is 0 in SI2xxx and 1 in SI5xxx

This adds a test case to explicitly verify the BA-IND is as expected
by the behaviour introduced in Change-Id I1cd0dc51026dcd0e508e63eea4e333e6b184787a

Related: OS#2525
Change-Id: I3e5b260af97ce96a221e4d51f6c1b41d58817a59
diff --git a/tests/gsm0408/gsm0408_test.c b/tests/gsm0408/gsm0408_test.c
index d5a5363..72a1772 100644
--- a/tests/gsm0408/gsm0408_test.c
+++ b/tests/gsm0408/gsm0408_test.c
@@ -647,6 +647,67 @@
 	VERIFY(f0, ==, 1);
 }
 
+static void test_si_ba_ind(void)
+{
+	struct gsm_network *network = bsc_network_init(tall_bsc_ctx, 1, 1, NULL);
+	struct gsm_bts *bts = gsm_bts_alloc(network, 0);
+	const struct gsm48_system_information_type_2 *si2 =
+		(struct gsm48_system_information_type_2 *) GSM_BTS_SI(bts, SYSINFO_TYPE_2);
+	const struct gsm48_system_information_type_2bis *si2bis =
+		(struct gsm48_system_information_type_2bis *) GSM_BTS_SI(bts, SYSINFO_TYPE_2bis);
+	const struct gsm48_system_information_type_2ter *si2ter =
+		(struct gsm48_system_information_type_2ter *) GSM_BTS_SI(bts, SYSINFO_TYPE_2ter);
+	const struct gsm48_system_information_type_5 *si5 =
+		(struct gsm48_system_information_type_5 *) GSM_BTS_SI(bts, SYSINFO_TYPE_5);
+	const struct gsm48_system_information_type_5bis *si5bis =
+		(struct gsm48_system_information_type_5bis *) GSM_BTS_SI(bts, SYSINFO_TYPE_5bis);
+	const struct gsm48_system_information_type_5ter *si5ter =
+		(struct gsm48_system_information_type_5ter *) GSM_BTS_SI(bts, SYSINFO_TYPE_5ter);
+
+	int rc;
+
+	bts->network = network;
+	bts->c0->arfcn = 23;
+
+	printf("Testing if BA-IND is set as expected in SI2xxx and SI5xxx\n");
+
+	rc = gsm_generate_si(bts, SYSINFO_TYPE_2);
+	OSMO_ASSERT(rc > 0);
+	printf("SI2: %s\n", osmo_hexdump((uint8_t *)si2, rc));
+	/* Validate BA-IND == 0 */
+	OSMO_ASSERT(!(si2->bcch_frequency_list[0] & 0x10));
+
+	rc = gsm_generate_si(bts, SYSINFO_TYPE_2bis);
+	OSMO_ASSERT(rc > 0);
+	printf("SI2bis: %s\n", osmo_hexdump((uint8_t *)si2bis, rc));
+	/* Validate BA-IND == 0 */
+	OSMO_ASSERT(!(si2bis->bcch_frequency_list[0] & 0x10));
+
+	rc = gsm_generate_si(bts, SYSINFO_TYPE_2ter);
+	OSMO_ASSERT(rc > 0);
+	printf("SI2ter: %s\n", osmo_hexdump((uint8_t *)si2ter, rc));
+	/* Validate BA-IND == 0 */
+	OSMO_ASSERT(!(si2ter->ext_bcch_frequency_list[0] & 0x10));
+
+	rc = gsm_generate_si(bts, SYSINFO_TYPE_5);
+	OSMO_ASSERT(rc > 0);
+	printf("SI5: %s\n", osmo_hexdump((uint8_t *)si5, rc));
+	/* Validate BA-IND == 1 */
+	OSMO_ASSERT(si5->bcch_frequency_list[0] & 0x10);
+
+	rc = gsm_generate_si(bts, SYSINFO_TYPE_5bis);
+	OSMO_ASSERT(rc > 0);
+	printf("SI5bis: %s\n", osmo_hexdump((uint8_t *)si5bis, rc));
+	/* Validate BA-IND == 1 */
+	OSMO_ASSERT(si5bis->bcch_frequency_list[0] & 0x10);
+
+	rc = gsm_generate_si(bts, SYSINFO_TYPE_5ter);
+	OSMO_ASSERT(rc > 0);
+	printf("SI5ter: %s\n", osmo_hexdump((uint8_t *)si5ter, rc));
+	/* Validate BA-IND == 1 */
+	OSMO_ASSERT(si5ter->bcch_frequency_list[0] & 0x10);
+}
+
 int main(int argc, char **argv)
 {
 	osmo_init_logging(&log_info);
@@ -666,6 +727,8 @@
 	test_si2q_mu();
 	test_si2q_long();
 
+	test_si_ba_ind();
+
 	printf("Done.\n");
 
 	return EXIT_SUCCESS;