test-condition: fix group check condition

We were checking the uid, whereas we should have checked the gid

src/core/main.c

@@ -1199,7 +1199,7 @@ static int bump_rlimit_memlock(struct rlimit *saved_rlimit) {
         int r;
 
         /* BPF_MAP_TYPE_LPM_TRIE bpf maps are charged against RLIMIT_MEMLOCK, even if we have CAP_IPC_LOCK which should
-         * normally disable such checks. We need them to implement IPAccessAllow= and IPAccessDeny=, hence let's bump
+         * normally disable such checks. We need them to implement IPAddressAllow= and IPAddressDeny=, hence let's bump
          * the value high enough for our user. */
 
         /* Using MAX() on resource limits only is safe if RLIM_INFINITY is > 0. POSIX declares that rlim_t

src/test/test-condition.c

@@ -689,7 +689,7 @@ static void test_condition_test_group(void) {
         condition_free(condition);
         free(gid);
 
-        groupname = (char*)(geteuid() == 0 ? NOBODY_GROUP_NAME : "root");
+        groupname = (char*)(getegid() == 0 ? NOBODY_GROUP_NAME : "root");
         condition = condition_new(CONDITION_GROUP, groupname, false, false);
         assert_se(condition);
         r = condition_test(condition);