1 files changed, 57 insertions, 0 deletions
diff --git a/tests/libntp/tstotv.cpp b/tests/libntp/tstotv.cpp
new file mode 100644
index 0000000..41f44d7
--- /dev/null
+++ b/tests/libntp/tstotv.cpp
@@ -0,0 +1,57 @@
+#include "libntptest.h"
+
+extern "C" {
+#include "ntp_fp.h"
+#include "timevalops.h"
+};
+
+class tstotvTest : public libntptest {
+protected:
+	::testing::AssertionResult IsEqual(const timeval& expected,
+									   const timeval& actual) {
+		if (expected.tv_sec == actual.tv_sec &&
+			expected.tv_usec == actual.tv_usec) {
+			// Success
+			return ::testing::AssertionSuccess();
+		} else {
+			return ::testing::AssertionFailure()
+				<< "expected: " << expected.tv_sec << "."
+				<< expected.tv_usec
+				<< " but was: " << actual.tv_sec << "."
+				<< actual.tv_usec;
+		}
+	}
+
+	static const u_long HALF = 2147483648UL;
+};
+
+TEST_F(tstotvTest, Seconds) {
+	const l_fp input = {50, 0}; // 50.0 s
+	const timeval expected = {50, 0};
+	timeval actual;
+
+	TSTOTV(&input, &actual);
+
+	EXPECT_TRUE(IsEqual(expected, actual));
+}
+
+TEST_F(tstotvTest, MicrosecondsExact) {
+	const l_fp input = {50, HALF}; // 10.5 s
+	const timeval expected = {50, 500000};
+	timeval actual;
+
+	TSTOTV(&input, &actual);
+
+	EXPECT_TRUE(IsEqual(expected, actual));
+
+}
+
+TEST_F(tstotvTest, MicrosecondsRounding) {
+	const l_fp input = {50, 3865471UL}; // Should round to 50.0009
+	const timeval expected = {50, 900};
+	timeval actual;
+
+	TSTOTV(&input, &actual);
+
+	EXPECT_TRUE(IsEqual(expected, actual));
+}