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/input.output/file.streams/fstreams/filebuf.assign/move_assign.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.
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_filebuf
+
+// basic_filebuf& operator=(basic_filebuf&& rhs);
+
+#include <fstream>
+#include <cassert>
+#include "platform_support.h"
+
+int main()
+{
+#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
+    std::string temp = get_temp_file_name();
+    {
+        std::filebuf f;
+        assert(f.open(temp.c_str(), std::ios_base::out | std::ios_base::in
+                                               | std::ios_base::trunc) != 0);
+        assert(f.is_open());
+        assert(f.sputn("123", 3) == 3);
+        f.pubseekoff(1, std::ios_base::beg);
+        assert(f.sgetc() == '2');
+        std::filebuf f2;
+        f2 = move(f);
+        assert(!f.is_open());
+        assert(f2.is_open());
+        assert(f2.sgetc() == '2');
+    }
+    std::remove(temp.c_str());
+    {
+        std::wfilebuf f;
+        assert(f.open(temp.c_str(), std::ios_base::out | std::ios_base::in
+                                               | std::ios_base::trunc) != 0);
+        assert(f.is_open());
+        assert(f.sputn(L"123", 3) == 3);
+        f.pubseekoff(1, std::ios_base::beg);
+        assert(f.sgetc() == L'2');
+        std::wfilebuf f2;
+        f2 = move(f);
+        assert(!f.is_open());
+        assert(f2.is_open());
+        assert(f2.sgetc() == L'2');
+    }
+    std::remove(temp.c_str());
+#endif  // _LIBCPP_HAS_NO_RVALUE_REFERENCES
+}