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/tuple/tuple.tuple/tuple.creation/make_tuple.pass.cpp

@@ -0,0 +1,50 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <tuple>
+
+// template <class... Types> class tuple;
+
+// template<class... Types>
+//   tuple<VTypes...> make_tuple(Types&&... t);
+
+#include <tuple>
+#include <functional>
+#include <cassert>
+
+int main()
+{
+    {
+        int i = 0;
+        float j = 0;
+        std::tuple<int, int&, float&> t = std::make_tuple(1, std::ref(i),
+                                                          std::ref(j));
+        assert(std::get<0>(t) == 1);
+        assert(std::get<1>(t) == 0);
+        assert(std::get<2>(t) == 0);
+        i = 2;
+        j = 3.5;
+        assert(std::get<0>(t) == 1);
+        assert(std::get<1>(t) == 2);
+        assert(std::get<2>(t) == 3.5);
+        std::get<1>(t) = 0;
+        std::get<2>(t) = 0;
+        assert(i == 0);
+        assert(j == 0);
+    }
+#if _LIBCPP_STD_VER > 11 
+    {
+        constexpr auto t1 = std::make_tuple(0, 1, 3.14);
+        constexpr int i1 = std::get<1>(t1);
+        constexpr double d1 = std::get<2>(t1);
+        static_assert (i1 == 1, "" );
+        static_assert (d1 == 3.14, "" );
+    }
+#endif
+}