1 files changed, 49 insertions, 0 deletions

diff --git a/libcxx/test/input.output/file.streams/fstreams/filebuf.members/open_pointer.pass.cpp b/libcxx/test/input.output/file.streams/fstreams/filebuf.members/open_pointer.pass.cpp
new file mode 100644
index 00000000000..151521d25e4
--- /dev/null
+++ b/libcxx/test/input.output/file.streams/fstreams/filebuf.members/open_pointer.pass.cpp
@@ -0,0 +1,49 @@
+//===----------------------------------------------------------------------===//
+//
+// ΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚΚThe LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <fstream>
+
+// basic_filebuf<charT,traits>* open(const char* s, ios_base::openmode mode);
+
+#include <fstream>
+#include <cassert>
+
+int main()
+{
+    {
+        std::filebuf f;
+        assert(f.open("test.dat", std::ios_base::out) != 0);
+        assert(f.is_open());
+        assert(f.sputn("123", 3) == 3);
+    }
+    {
+        std::filebuf f;
+        assert(f.open("test.dat", std::ios_base::in) != 0);
+        assert(f.is_open());
+        assert(f.sbumpc() == '1');
+        assert(f.sbumpc() == '2');
+        assert(f.sbumpc() == '3');
+    }
+    remove("test.dat");
+    {
+        std::wfilebuf f;
+        assert(f.open("test.dat", std::ios_base::out) != 0);
+        assert(f.is_open());
+        assert(f.sputn(L"123", 3) == 3);
+    }
+    {
+        std::wfilebuf f;
+        assert(f.open("test.dat", 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("test.dat");
+}