1 files changed, 49 insertions, 0 deletions
diff --git a/contrib/ntp/tests/libntp/g_caltontp.cpp b/contrib/ntp/tests/libntp/g_caltontp.cpp
new file mode 100644
index 0000000..7dafec0
--- /dev/null
+++ b/contrib/ntp/tests/libntp/g_caltontp.cpp
@@ -0,0 +1,49 @@
+#include "g_libntptest.h"
+
+extern "C" {
+#include "ntp_calendar.h"
+}
+
+class caltontpTest : public libntptest {
+};
+
+TEST_F(caltontpTest, DateGivenMonthDay) {
+	// 2010-06-24 12:50:00
+	calendar input = {2010, 0, 6, 24, 12, 50, 0};
+
+	u_long expected = 3486372600UL; // This is the timestamp above.
+
+	EXPECT_EQ(expected, caltontp(&input));
+}
+
+TEST_F(caltontpTest, DateGivenYearDay) {
+	// 2010-06-24 12:50:00
+	// This is the 175th day of 2010.
+	calendar input = {2010, 175, 0, 0, 12, 50, 0};
+
+	u_long expected = 3486372600UL; // This is the timestamp above.
+
+	EXPECT_EQ(expected, caltontp(&input));
+}
+
+TEST_F(caltontpTest, DateLeapYear) {
+	// 2012-06-24 12:00:00
+	// This is the 176th day of 2012 (since 2012 is a leap year).
+	calendar inputYd = {2012, 176, 0, 0, 12, 00, 00};
+	calendar inputMd = {2012, 0, 6, 24, 12, 00, 00};
+
+	u_long expected = 3549528000UL;
+
+	EXPECT_EQ(expected, caltontp(&inputYd));
+	EXPECT_EQ(expected, caltontp(&inputMd));
+}
+
+TEST_F(caltontpTest, WraparoundDateIn2036) {
+	// 2036-02-07 06:28:16
+	// This is (one) wrapping boundary where we go from ULONG_MAX to 0.
+	calendar input = {2036, 0, 2, 7, 6, 28, 16};
+
+	u_long expected = 0UL;
+
+	EXPECT_EQ(expected, caltontp(&input));
+}