Use value_string for ctrl_type

Use value_string for enum ctrl_type instead of custom code. Add
corresponding unit tests.

Related: OS#1615
Change-Id: Icd4e96dd9f00876cb70b43cfcf42ab4f10311b28
diff --git a/tests/Makefile.am b/tests/Makefile.am
index f6d4db3..35b9150 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -11,7 +11,7 @@
 		 logging/logging_test fr/fr_test codec/codec_test	\
 		 loggingrb/loggingrb_test strrb/strrb_test              \
 		 vty/vty_test comp128/comp128_test utils/utils_test	\
-		 smscb/gsm0341_test stats/stats_test			\
+		 smscb/gsm0341_test stats/stats_test ctrl/ctrl_test	\
 		 bitvec/bitvec_test msgb/msgb_test bits/bitcomp_test	\
 		 tlv/tlv_test gsup/gsup_test oap/oap_test fsm/fsm_test	\
 		 write_queue/wqueue_test socket/socket_test
@@ -42,6 +42,9 @@
 auth_milenage_test_SOURCES = auth/milenage_test.c
 auth_milenage_test_LDADD = $(top_builddir)/src/libosmocore.la $(top_builddir)/src/gsm/libosmogsm.la
 
+ctrl_ctrl_test_SOURCES = ctrl/ctrl_test.c
+ctrl_ctrl_test_LDADD = $(top_builddir)/src/libosmocore.la $(top_builddir)/src/ctrl/libosmoctrl.la
+
 gea_gea_test_SOURCES = gea/gea_test.c
 gea_gea_test_LDADD = $(top_builddir)/src/libosmocore.la $(top_builddir)/src/gsm/libosmogsm.la
 
@@ -164,7 +167,7 @@
 EXTRA_DIST = testsuite.at $(srcdir)/package.m4 $(TESTSUITE)		\
              timer/timer_test.ok sms/sms_test.ok ussd/ussd_test.ok	\
              smscb/smscb_test.ok bits/bitrev_test.ok a5/a5_test.ok	\
-             conv/conv_test.ok auth/milenage_test.ok			\
+             conv/conv_test.ok auth/milenage_test.ok ctrl/ctrl_test.ok	\
              lapd/lapd_test.ok gsm0408/gsm0408_test.ok			\
              gsm0808/gsm0808_test.ok gb/bssgp_fc_tests.err		\
              gb/bssgp_fc_tests.ok gb/bssgp_fc_tests.sh			\
diff --git a/tests/ctrl/ctrl_test.c b/tests/ctrl/ctrl_test.c
new file mode 100644
index 0000000..3bbab76
--- /dev/null
+++ b/tests/ctrl/ctrl_test.c
@@ -0,0 +1,36 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include <stdbool.h>
+
+#include <osmocom/core/utils.h>
+#include <osmocom/ctrl/control_cmd.h>
+
+inline void check_type(enum ctrl_type c)
+{
+	const char *t = get_value_string(ctrl_type_vals, c);
+	int v = get_string_value(ctrl_type_vals, t);
+
+	printf("ctrl type %d is %s ", c, t);
+	if (v < 0)
+		printf("[PARSE FAILED]\n");
+	else
+		printf("-> %d %s\n", v, c != v ? "FAIL" : "OK");
+}
+
+int main(int argc, char **argv)
+{
+	printf("Checking ctrl types...\n");
+
+	check_type(CTRL_TYPE_UNKNOWN);
+	check_type(CTRL_TYPE_GET);
+	check_type(CTRL_TYPE_SET);
+	check_type(CTRL_TYPE_GET_REPLY);
+	check_type(CTRL_TYPE_SET_REPLY);
+	check_type(CTRL_TYPE_TRAP);
+	check_type(CTRL_TYPE_ERROR);
+	check_type(64);
+
+	return 0;
+}
diff --git a/tests/ctrl/ctrl_test.ok b/tests/ctrl/ctrl_test.ok
new file mode 100644
index 0000000..c4b05e9
--- /dev/null
+++ b/tests/ctrl/ctrl_test.ok
@@ -0,0 +1,9 @@
+Checking ctrl types...
+ctrl type 0 is unknown 0x0 [PARSE FAILED]
+ctrl type 1 is GET -> 1 OK
+ctrl type 2 is SET -> 2 OK
+ctrl type 3 is GET_REPLY -> 3 OK
+ctrl type 4 is SET_REPLY -> 4 OK
+ctrl type 5 is TRAP -> 5 OK
+ctrl type 6 is ERROR -> 6 OK
+ctrl type 64 is unknown 0x40 [PARSE FAILED]
diff --git a/tests/testsuite.at b/tests/testsuite.at
index a3be0e7..6d8c5d3 100644
--- a/tests/testsuite.at
+++ b/tests/testsuite.at
@@ -9,6 +9,12 @@
 AT_CHECK([$abs_top_builddir/tests/a5/a5_test], [0], [expout])
 AT_CLEANUP
 
+AT_SETUP([ctrl])
+AT_KEYWORDS([ctrl])
+cat $abs_srcdir/ctrl/ctrl_test.ok > expout
+AT_CHECK([$abs_top_builddir/tests/ctrl/ctrl_test], [0], [expout])
+AT_CLEANUP
+
 AT_SETUP([kasumi])
 AT_KEYWORDS([kasumi])
 cat $abs_srcdir/kasumi/kasumi_test.ok > expout