1 files changed, 78 insertions, 0 deletions
diff --git a/tests/libntp/buftvtots.c b/tests/libntp/buftvtots.c
new file mode 100644
index 000000000000..edeedf63ad2b
--- /dev/null
+++ b/tests/libntp/buftvtots.c
@@ -0,0 +1,78 @@
+#include "config.h"
+#include "ntp_types.h"
+#include "ntp_stdlib.h"
+
+#include "lfptest.h"
+
+#include "ntp_unixtime.h"
+
+#include "unity.h"
+
+// Required for Solaris.
+#include <math.h>
+
+
+
+void test_ZeroBuffer() {
+#ifndef SYS_WINNT
+	const struct timeval input = {0, 0};
+	const l_fp expected = {0 + JAN_1970, 0};
+
+	l_fp actual;
+
+	TEST_ASSERT_TRUE(buftvtots((const char*)(&input), &actual));
+	TEST_ASSERT_TRUE(IsEqual(expected, actual));
+#else
+	TEST_IGNORE_MESSAGE("Test only for Windows, skipping...");
+#endif
+}
+
+void test_IntegerAndFractionalBuffer() {
+#ifndef SYS_WINNT
+	const struct timeval input = {5, 500000}; // 5.5
+	const l_fp expected = {5 + JAN_1970, HALF};
+
+	l_fp actual;
+
+	TEST_ASSERT_TRUE(buftvtots((const char*)(&input), &actual));
+
+	// Compare the fractional part with an absolute error given.
+	TEST_ASSERT_EQUAL(expected.l_ui, actual.l_ui);
+
+	double expectedDouble, actualDouble;
+	M_LFPTOD(0, expected.l_uf, expectedDouble);
+	M_LFPTOD(0, actual.l_uf, actualDouble);
+
+	// The error should be less than 0.5 us
+	TEST_ASSERT_DOUBLE_WITHIN(0.0000005,expectedDouble,actualDouble);  //delta,epected,actual //_EXPECT_NEAR(expectedDouble, actualDouble, 0.0000005);
+#else
+	TEST_IGNORE_MESSAGE("Test only for Windows, skipping...");
+#endif
+}
+
+void test_IllegalMicroseconds() {
+#ifndef SYS_WINNT
+	const struct timeval input = {0, 1100000}; // > 999 999 microseconds.
+	
+	l_fp actual;
+
+	TEST_ASSERT_FALSE(buftvtots((const char*)(&input), &actual));
+#else
+	TEST_IGNORE_MESSAGE("Test only for Windows, skipping...");
+#endif
+}
+
+
+void test_AlwaysFalseOnWindows() {
+#ifdef SYS_WINNT
+	/*
+	 * Under Windows, buftvtots will just return
+	 * 0 (false).
+	 */
+	l_fp actual;
+	TEST_ASSERT_FALSE(buftvtots("", &actual));
+#else
+	TEST_IGNORE_MESSAGE("Non-Windows test, skipping...");
+#endif
+}
+