1 files changed, 74 insertions, 0 deletions
diff --git a/test/std/utilities/time/time.duration/time.duration.nonmember/op_-.pass.cpp b/test/std/utilities/time/time.duration/time.duration.nonmember/op_-.pass.cpp
new file mode 100644
index 0000000000000..fac58b9716d3b
--- /dev/null
+++ b/test/std/utilities/time/time.duration/time.duration.nonmember/op_-.pass.cpp
@@ -0,0 +1,74 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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 Rep1, class Period1, class Rep2, class Period2>
+//   constexpr
+//   typename common_type<duration<Rep1, Period1>, duration<Rep2, Period2>>::type
+//   operator-(const duration<Rep1, Period1>& lhs, const duration<Rep2, Period2>& rhs);
+
+#include <chrono>
+#include <cassert>
+
+int main()
+{
+    {
+    std::chrono::seconds s1(3);
+    std::chrono::seconds s2(5);
+    std::chrono::seconds r = s1 - s2;
+    assert(r.count() == -2);
+    }
+    {
+    std::chrono::seconds s1(3);
+    std::chrono::microseconds s2(5);
+    std::chrono::microseconds r = s1 - s2;
+    assert(r.count() == 2999995);
+    }
+    {
+    std::chrono::duration<int, std::ratio<2, 3> > s1(3);
+    std::chrono::duration<int, std::ratio<3, 5> > s2(5);
+    std::chrono::duration<int, std::ratio<1, 15> > r = s1 - s2;
+    assert(r.count() == -15);
+    }
+    {
+    std::chrono::duration<int, std::ratio<2, 3> > s1(3);
+    std::chrono::duration<double, std::ratio<3, 5> > s2(5);
+    std::chrono::duration<double, std::ratio<1, 15> > r = s1 - s2;
+    assert(r.count() == -15);
+    }
+#ifndef _LIBCPP_HAS_NO_CONSTEXPR
+    {
+    constexpr std::chrono::seconds s1(3);
+    constexpr std::chrono::seconds s2(5);
+    constexpr std::chrono::seconds r = s1 - s2;
+    static_assert(r.count() == -2, "");
+    }
+    {
+    constexpr std::chrono::seconds s1(3);
+    constexpr std::chrono::microseconds s2(5);
+    constexpr std::chrono::microseconds r = s1 - s2;
+    static_assert(r.count() == 2999995, "");
+    }
+    {
+    constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(3);
+    constexpr std::chrono::duration<int, std::ratio<3, 5> > s2(5);
+    constexpr std::chrono::duration<int, std::ratio<1, 15> > r = s1 - s2;
+    static_assert(r.count() == -15, "");
+    }
+    {
+    constexpr std::chrono::duration<int, std::ratio<2, 3> > s1(3);
+    constexpr std::chrono::duration<double, std::ratio<3, 5> > s2(5);
+    constexpr std::chrono::duration<double, std::ratio<1, 15> > r = s1 - s2;
+    static_assert(r.count() == -15, "");
+    }
+#endif
+}