1 files changed, 44 insertions, 0 deletions
diff --git a/contrib/ntp/tests/libntp/tstotv.c b/contrib/ntp/tests/libntp/tstotv.c
new file mode 100644
index 0000000..0801727
--- /dev/null
+++ b/contrib/ntp/tests/libntp/tstotv.c
@@ -0,0 +1,44 @@
+#include "config.h"
+
+#include "ntp_fp.h"
+#include "timevalops.h"
+
+#include "unity.h"
+
+void
+test_Seconds(void) {
+	const l_fp input = {50, 0}; // 50.0 s
+	const struct timeval expected = {50, 0};
+	struct timeval actual;
+
+	TSTOTV(&input, &actual);
+
+	TEST_ASSERT_EQUAL(expected.tv_sec, actual.tv_sec);
+	TEST_ASSERT_EQUAL(expected.tv_usec, actual.tv_usec);
+}
+
+void
+test_MicrosecondsExact(void) {
+	const u_long HALF = 2147483648UL;
+	const l_fp input = {50, HALF}; // 50.5 s
+	const struct timeval expected = {50, 500000};
+	struct timeval actual;
+
+	TSTOTV(&input, &actual);
+
+	TEST_ASSERT_EQUAL(expected.tv_sec, actual.tv_sec);
+	TEST_ASSERT_EQUAL(expected.tv_usec, actual.tv_usec);
+
+}
+
+void
+test_MicrosecondsRounding(void) {
+	const l_fp input = {50, 3865471UL}; // Should round to 50.0009
+	const struct timeval expected = {50, 900};
+	struct timeval actual;
+
+	TSTOTV(&input, &actual);
+
+	TEST_ASSERT_EQUAL(expected.tv_sec, actual.tv_sec);
+	TEST_ASSERT_EQUAL(expected.tv_usec, actual.tv_usec);
+}