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/localization/locale.stdcvt/codecvt_utf16_encoding.pass.cpp

@@ -0,0 +1,45 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <codecvt>
+
+// template <class Elem, unsigned long Maxcode = 0x10ffff,
+//           codecvt_mode Mode = (codecvt_mode)0>
+// class codecvt_utf16
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// int encoding() const throw();
+
+#include <codecvt>
+#include <cassert>
+
+int main()
+{
+    {
+        typedef std::codecvt_utf16<wchar_t> C;
+        C c;
+        int r = c.encoding();
+        assert(r == 0);
+    }
+    {
+        typedef std::codecvt_utf16<char16_t> C;
+        C c;
+        int r = c.encoding();
+        assert(r == 0);
+    }
+    {
+        typedef std::codecvt_utf16<char32_t> C;
+        C c;
+        int r = c.encoding();
+        assert(r == 0);
+    }
+}