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_utf8_unshift.pass.cpp

@@ -0,0 +1,56 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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_utf8
+//     : public codecvt<Elem, char, mbstate_t>
+// {
+//     // unspecified
+// };
+
+// result
+//     unshift(stateT& state,
+//             externT* to, externT* to_end, externT*& to_next) const;
+
+#include <codecvt>
+#include <cassert>
+
+int main()
+{
+    {
+        typedef std::codecvt_utf8<wchar_t> C;
+        C c;
+        char n[4] = {0};
+        std::mbstate_t m;
+        char* np = nullptr;
+        std::codecvt_base::result r = c.unshift(m, n, n+4, np);
+        assert(r == std::codecvt_base::noconv);
+    }
+    {
+        typedef std::codecvt_utf8<char16_t> C;
+        C c;
+        char n[4] = {0};
+        std::mbstate_t m;
+        char* np = nullptr;
+        std::codecvt_base::result r = c.unshift(m, n, n+4, np);
+        assert(r == std::codecvt_base::noconv);
+    }
+    {
+        typedef std::codecvt_utf8<char32_t> C;
+        C c;
+        char n[4] = {0};
+        std::mbstate_t m;
+        char* np = nullptr;
+        std::codecvt_base::result r = c.unshift(m, n, n+4, np);
+        assert(r == std::codecvt_base::noconv);
+    }
+}