1 files changed, 51 insertions, 0 deletions
diff --git a/contrib/ntp/tests/libntp/atoint.c b/contrib/ntp/tests/libntp/atoint.c
new file mode 100644
index 0000000..aca6ef5
--- /dev/null
+++ b/contrib/ntp/tests/libntp/atoint.c
@@ -0,0 +1,51 @@
+#include "config.h"
+
+#include "ntp_stdlib.h"
+#include "ntp_calendar.h"
+#include "unity.h"
+
+void test_RegularPositive(void) {
+        const char *str = "17";
+        long val;
+
+        TEST_ASSERT_TRUE(atoint(str, &val));
+        TEST_ASSERT_EQUAL(17, val);
+}
+
+void test_RegularNegative(void) {
+        const char *str = "-20";
+        long val;
+
+        TEST_ASSERT_TRUE(atoint(str, &val));
+        TEST_ASSERT_EQUAL(-20, val);
+}
+
+void test_PositiveOverflowBoundary(void) {
+        const char *str = "2147483648";
+        long val;
+
+        TEST_ASSERT_FALSE(atoint(str, &val));
+}
+
+void test_NegativeOverflowBoundary(void) {
+        const char *str = "-2147483649";
+        long val;
+
+        TEST_ASSERT_FALSE(atoint(str, &val));
+}
+
+void test_PositiveOverflowBig(void) {
+        const char *str = "2300000000";
+        long val;
+
+        TEST_ASSERT_FALSE(atoint(str, &val));
+}
+
+void test_IllegalCharacter(void) {
+        const char *str = "4500l";
+        long val;
+
+        TEST_ASSERT_FALSE(atoint(str, &val));
+}
+
+