1 files changed, 23 insertions, 0 deletions
diff --git a/tests/libntp/modetoa.c b/tests/libntp/modetoa.c
new file mode 100644
index 0000000000000..267b44e010a7a
--- /dev/null
+++ b/tests/libntp/modetoa.c
@@ -0,0 +1,23 @@
+#include "config.h"
+
+#include "ntp_stdlib.h"
+
+#include "unity.h"
+
+void test_KnownMode(void);
+void test_UnknownMode(void);
+
+
+void
+test_KnownMode(void) {
+	const int MODE = 3; // Should be "client"
+
+	TEST_ASSERT_EQUAL_STRING("client", modetoa(MODE));
+}
+
+void
+test_UnknownMode(void) {
+	const int MODE = 100;
+
+	TEST_ASSERT_EQUAL_STRING("mode#100", modetoa(MODE));
+}