1 files changed, 43 insertions, 0 deletions
diff --git a/tests/libntp/atouint.c b/tests/libntp/atouint.c
new file mode 100644
index 000000000000..33c15a9141c3
--- /dev/null
+++ b/tests/libntp/atouint.c
@@ -0,0 +1,43 @@
+#include "config.h"
+
+#include "ntp_stdlib.h"
+#include "ntp_calendar.h"
+#include "ntp_fp.h"
+
+#include "unity.h"
+
+void test_RegularPositive() {
+	const char *str = "305";
+	u_long actual;
+
+	TEST_ASSERT_TRUE(atouint(str, &actual));
+	TEST_ASSERT_EQUAL(305, actual);
+}
+
+void test_PositiveOverflowBoundary() {
+	const char *str = "4294967296";
+	u_long actual;
+
+	TEST_ASSERT_FALSE(atouint(str, &actual));
+}
+
+void test_PositiveOverflowBig() {
+	const char *str = "8000000000";
+	u_long actual;
+
+	TEST_ASSERT_FALSE(atouint(str, &actual));
+}
+
+void test_Negative() {
+	const char *str = "-1";
+	u_long actual;
+
+	TEST_ASSERT_FALSE(atouint(str, &actual));
+}
+
+void test_IllegalChar() {
+	const char *str = "50c3";
+	u_long actual;
+
+	TEST_ASSERT_FALSE(atouint(str, &actual));
+}