test: add trivial test for syscall table and extend table tests to error paths

2 files changed, 8 insertions, 3 deletions

diff --git a/src/shared/test-tables.h b/src/shared/test-tables.h
index ac7deda39b..deebec2ed2 100644
--- a/src/shared/test-tables.h
+++ b/src/shared/test-tables.h
@@ -29,15 +29,17 @@ static inline void _test_table(const char *name,
                                int size) {
         int i;
 
-        for (i = 0; i < size; i++) {
+        for (i = 0; i < size + 1; i++) {
                 const char* val = lookup(i);
-                int rev = -1;
+                int rev;
 
                 if (val)
                         rev = reverse(val);
+                else
+                        rev = reverse("--no-such--value----");
 
                 printf("%s: %d → %s → %d\n", name, i, val, rev);
-                if (!val || rev != i)
+                if (i < size ? val == NULL || rev != i : val != NULL || rev != -1)
                         exit(EXIT_FAILURE);
         }
 }
diff --git a/src/test/test-tables.c b/src/test/test-tables.c
index dff6431b6d..9a3d3e8e74 100644
--- a/src/test/test-tables.c
+++ b/src/test/test-tables.c
@@ -43,6 +43,7 @@
 #include "unit-name.h"
 #include "unit.h"
 #include "util.h"
+#include "syscall-list.h"
 
 #include "test-tables.h"
 
@@ -98,5 +99,7 @@ int main(int argc, char **argv) {
         test_table(unit_load_state, UNIT_LOAD_STATE);
         test_table(unit_type, UNIT_TYPE);
 
+        _test_table("syscall", syscall_to_name, syscall_from_name, syscall_max());
+
         return EXIT_SUCCESS;
 }