1 files changed, 38 insertions, 0 deletions
diff --git a/libcxx/test/std/utilities/time/time.point/time.point.nonmember/op_-duration.pass.cpp b/libcxx/test/std/utilities/time/time.point/time.point.nonmember/op_-duration.pass.cpp
new file mode 100644
index 00000000000..342d27b5aeb
--- /dev/null
+++ b/libcxx/test/std/utilities/time/time.point/time.point.nonmember/op_-duration.pass.cpp
@@ -0,0 +1,38 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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 Rep2, class Period2>
+//   time_point<Clock, typename common_type<Duration1, duration<Rep2, Period2>>::type>
+//   operator-(const time_point<Clock, Duration1>& lhs, const duration<Rep2, Period2>& rhs);
+
+#include <chrono>
+#include <cassert>
+
+int main()
+{
+    typedef std::chrono::system_clock Clock;
+    typedef std::chrono::milliseconds Duration1;
+    typedef std::chrono::microseconds Duration2;
+    {
+    std::chrono::time_point<Clock, Duration1> t1(Duration1(3));
+    std::chrono::time_point<Clock, Duration2> t2 = t1 - Duration2(5);
+    assert(t2.time_since_epoch() == Duration2(2995));
+    }
+#if _LIBCPP_STD_VER > 11
+    {
+    constexpr std::chrono::time_point<Clock, Duration1> t1(Duration1(3));
+    constexpr std::chrono::time_point<Clock, Duration2> t2 = t1 - Duration2(5);
+    static_assert(t2.time_since_epoch() == Duration2(2995), "");
+    }
+#endif
+}