diff --git a/tests/utils/utils_test.c b/tests/utils/utils_test.c
index bdeedb5..26c94dc 100644
--- a/tests/utils/utils_test.c
+++ b/tests/utils/utils_test.c
@@ -1351,6 +1351,23 @@
 	strbuf_test_tail_for_buflen(1);
 }
 
+void strbuf_test_remain_char_count(void)
+{
+	char buf[20];
+	struct osmo_strbuf sb = { .buf = buf, .len = sizeof(buf) };
+
+	printf("\n%s\n", __func__);
+
+	printf("remaining space: %zu\n", OSMO_STRBUF_REMAIN(sb));
+	printf("current char count: %zu\n", OSMO_STRBUF_CHAR_COUNT(sb));
+
+	printf("populating the buffer\n");
+	OSMO_STRBUF_PRINTF(sb, "osmocom");
+
+	printf("remaining space: %zu\n", OSMO_STRBUF_REMAIN(sb));
+	printf("current char count: %zu\n", OSMO_STRBUF_CHAR_COUNT(sb));
+}
+
 static void startswith_test_str(const char *str, const char *startswith_str, bool expect_rc)
 {
 	bool rc = osmo_str_startswith(str, startswith_str);
@@ -2198,6 +2215,7 @@
 	strbuf_test();
 	strbuf_test_nolen();
 	strbuf_test_tail();
+	strbuf_test_remain_char_count();
 	startswith_test();
 	name_c_impl_test();
 	osmo_print_n_test();
diff --git a/tests/utils/utils_test.ok b/tests/utils/utils_test.ok
index 6f5d46b..c0c9560 100644
--- a/tests/utils/utils_test.ok
+++ b/tests/utils/utils_test.ok
@@ -524,6 +524,13 @@
 6: "" sb.chars_needed=6 sb.pos=&sb.buf[1]
 7: "" sb.chars_needed=12 sb.pos=&sb.buf[1]
 
+strbuf_test_remain_char_count
+remaining space: 20
+current char count: 0
+populating the buffer
+remaining space: 13
+current char count: 7
+
 startswith_test()
 osmo_str_startswith(NULL, NULL) == true
 osmo_str_startswith("", NULL) == true