1 files changed, 94 insertions, 0 deletions
diff --git a/tests/libntp/caljulian.cpp b/tests/libntp/caljulian.cpp
new file mode 100644
index 0000000..d9cc952
--- /dev/null
+++ b/tests/libntp/caljulian.cpp
@@ -0,0 +1,94 @@
+#include "libntptest.h"
+
+extern "C" {
+#include "ntp_calendar.h"
+}
+
+#include <string>
+#include <sstream>
+
+class caljulianTest : public libntptest {
+protected:
+	virtual void SetUp();
+	virtual void TearDown();
+
+	std::string CalendarToString(const calendar &cal) {
+		std::ostringstream ss;
+		ss << cal.year << "-" << (u_int)cal.month << "-" << (u_int)cal.monthday
+		   << " (" << cal.yearday << ") " << (u_int)cal.hour << ":"
+		   << (u_int)cal.minute << ":" << (u_int)cal.second;
+		return ss.str();
+	}
+
+	::testing::AssertionResult IsEqual(const calendar &expected, const calendar &actual) {
+		if (expected.year == actual.year &&
+			(expected.yearday == actual.yearday ||
+			 (expected.month == actual.month &&
+			  expected.monthday == actual.monthday)) &&
+			expected.hour == actual.hour &&
+			expected.minute == actual.minute &&
+			expected.second == actual.second) {
+			return ::testing::AssertionSuccess();
+		} else {
+			return ::testing::AssertionFailure()
+				<< "expected: " << CalendarToString(expected) << " but was "
+				<< CalendarToString(actual);
+		}
+	}
+};
+
+void caljulianTest::SetUp()
+{
+    ntpcal_set_timefunc(timefunc);
+    settime(1970, 1, 1, 0, 0, 0);
+}
+
+void caljulianTest::TearDown()
+{
+    ntpcal_set_timefunc(NULL);
+}
+
+
+TEST_F(caljulianTest, RegularTime) {
+	u_long testDate = 3485080800UL; // 2010-06-09 14:00:00
+	calendar expected = {2010,160,6,9,14,0,0};
+
+	calendar actual;
+
+	caljulian(testDate, &actual);
+
+	EXPECT_TRUE(IsEqual(expected, actual));
+}
+
+TEST_F(caljulianTest, LeapYear) {
+	u_long input = 3549902400UL; // 2012-06-28 20:00:00Z
+	calendar expected = {2012, 179, 6, 28, 20, 0, 0};
+
+	calendar actual;
+
+	caljulian(input, &actual);
+
+	EXPECT_TRUE(IsEqual(expected, actual));
+}
+
+TEST_F(caljulianTest, uLongBoundary) {
+	u_long time = 4294967295UL; // 2036-02-07 6:28:15
+	calendar expected = {2036,0,2,7,6,28,15};
+
+	calendar actual;
+
+	caljulian(time, &actual);
+
+	EXPECT_TRUE(IsEqual(expected, actual));
+}
+
+TEST_F(caljulianTest, uLongWrapped) {
+	u_long time = 0;
+	calendar expected = {2036,0,2,7,6,28,16};
+
+	calendar actual;
+
+	caljulian(time, &actual);
+
+	EXPECT_TRUE(IsEqual(expected, actual));
+}