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.members/open_pointer.pass.cpp

@@ -0,0 +1,51 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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>
+
+// basic_filebuf<charT,traits>* open(const char* s, ios_base::openmode mode);
+
+#include <fstream>
+#include <cassert>
+#include "platform_support.h"
+
+int main()
+{
+    std::string temp = get_temp_file_name();
+    {
+        std::filebuf f;
+        assert(f.open(temp.c_str(), std::ios_base::out) != 0);
+        assert(f.is_open());
+        assert(f.sputn("123", 3) == 3);
+    }
+    {
+        std::filebuf f;
+        assert(f.open(temp.c_str(), std::ios_base::in) != 0);
+        assert(f.is_open());
+        assert(f.sbumpc() == '1');
+        assert(f.sbumpc() == '2');
+        assert(f.sbumpc() == '3');
+    }
+    std::remove(temp.c_str());
+    {
+        std::wfilebuf f;
+        assert(f.open(temp.c_str(), std::ios_base::out) != 0);
+        assert(f.is_open());
+        assert(f.sputn(L"123", 3) == 3);
+    }
+    {
+        std::wfilebuf f;
+        assert(f.open(temp.c_str(), std::ios_base::in) != 0);
+        assert(f.is_open());
+        assert(f.sbumpc() == L'1');
+        assert(f.sbumpc() == L'2');
+        assert(f.sbumpc() == L'3');
+    }
+    remove(temp.c_str());
+}