Move test into test/std subdirectory.

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@224658 91177308-0d34-0410-b5e6-96231b3b80d8

test/std/utilities/utility/pairs/pairs.pair/assign_rv_pair.pass.cpp

@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <utility>
+
+// template <class T1, class T2> struct pair
+
+// pair& operator=(pair&& p);
+
+#include <utility>
+#include <memory>
+#include <cassert>
+
+int main()
+{
+#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
+    {
+        typedef std::pair<std::unique_ptr<int>, short> P;
+        P p1(std::unique_ptr<int>(new int(3)), 4);
+        P p2;
+        p2 = std::move(p1);
+        assert(*p2.first == 3);
+        assert(p2.second == 4);
+    }
+#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
+}