1 files changed, 36 insertions, 0 deletions
diff --git a/test/std/utilities/time/time.duration/time.duration.cons/convert_inexact.pass.cpp b/test/std/utilities/time/time.duration/time.duration.cons/convert_inexact.pass.cpp
new file mode 100644
index 0000000000000..519b2b141c298
--- /dev/null
+++ b/test/std/utilities/time/time.duration/time.duration.cons/convert_inexact.pass.cpp
@@ -0,0 +1,36 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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>
+
+// duration
+
+// template <class Rep2, class Period2>
+//   duration(const duration<Rep2, Period2>& d);
+
+// inexact conversions allowed for floating point reps
+
+#include <chrono>
+#include <cassert>
+
+int main()
+{
+    {
+    std::chrono::duration<double, std::micro> us(1);
+    std::chrono::duration<double, std::milli> ms = us;
+    assert(ms.count() == 1./1000);
+    }
+#ifndef _LIBCPP_HAS_NO_CONSTEXPR
+    {
+    constexpr std::chrono::duration<double, std::micro> us(1);
+    constexpr std::chrono::duration<double, std::milli> ms = us;
+    static_assert(ms.count() == 1./1000, "");
+    }
+#endif
+}