1 files changed, 108 insertions, 0 deletions
diff --git a/test/std/utilities/time/time.point/time.point.comparisons/op_less.pass.cpp b/test/std/utilities/time/time.point/time.point.comparisons/op_less.pass.cpp
new file mode 100644
index 0000000000000..9d94400ed3d17
--- /dev/null
+++ b/test/std/utilities/time/time.point/time.point.comparisons/op_less.pass.cpp
@@ -0,0 +1,108 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <chrono>
+
+// time_point
+
+// template <class Clock, class Duration1, class Duration2>
+//   bool
+//   operator< (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
+
+// template <class Clock, class Duration1, class Duration2>
+//   bool
+//   operator> (const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
+
+// template <class Clock, class Duration1, class Duration2>
+//   bool
+//   operator<=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
+
+// template <class Clock, class Duration1, class Duration2>
+//   bool
+//   operator>=(const time_point<Clock, Duration1>& lhs, const time_point<Clock, Duration2>& rhs);
+
+#include <chrono>
+#include <cassert>
+
+int main()
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::milliseconds Duration1;
+    typedef std::chrono::microseconds Duration2;
+    typedef std::chrono::time_point<Clock, Duration1> T1;
+    typedef std::chrono::time_point<Clock, Duration2> T2;
+
+    {
+    T1 t1(Duration1(3));
+    T1 t2(Duration1(3));
+    assert(!(t1 <  t2));
+    assert(!(t1 >  t2));
+    assert( (t1 <= t2));
+    assert( (t1 >= t2));
+    }
+    {
+    T1 t1(Duration1(3));
+    T1 t2(Duration1(4));
+    assert( (t1 <  t2));
+    assert(!(t1 >  t2));
+    assert( (t1 <= t2));
+    assert(!(t1 >= t2));
+    }
+    {
+    T1 t1(Duration1(3));
+    T2 t2(Duration2(3000));
+    assert(!(t1 <  t2));
+    assert(!(t1 >  t2));
+    assert( (t1 <= t2));
+    assert( (t1 >= t2));
+    }
+    {
+    T1 t1(Duration1(3));
+    T2 t2(Duration2(3001));
+    assert( (t1 <  t2));
+    assert(!(t1 >  t2));
+    assert( (t1 <= t2));
+    assert(!(t1 >= t2));
+    }
+
+#if _LIBCPP_STD_VER > 11
+    {
+    constexpr T1 t1(Duration1(3));
+    constexpr T1 t2(Duration1(3));
+    static_assert(!(t1 <  t2), "");
+    static_assert(!(t1 >  t2), "");
+    static_assert( (t1 <= t2), "");
+    static_assert( (t1 >= t2), "");
+    }
+    {
+    constexpr T1 t1(Duration1(3));
+    constexpr T1 t2(Duration1(4));
+    static_assert( (t1 <  t2), "");
+    static_assert(!(t1 >  t2), "");
+    static_assert( (t1 <= t2), "");
+    static_assert(!(t1 >= t2), "");
+    }
+    {
+    constexpr T1 t1(Duration1(3));
+    constexpr T2 t2(Duration2(3000));
+    static_assert(!(t1 <  t2), "");
+    static_assert(!(t1 >  t2), "");
+    static_assert( (t1 <= t2), "");
+    static_assert( (t1 >= t2), "");
+    }
+    {
+    constexpr T1 t1(Duration1(3));
+    constexpr T2 t2(Duration2(3001));
+    static_assert( (t1 <  t2), "");
+    static_assert(!(t1 >  t2), "");
+    static_assert( (t1 <= t2), "");
+    static_assert(!(t1 >= t2), "");
+    }
+#endif
+}