1 files changed, 66 insertions, 0 deletions
diff --git a/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.assign/nonmember_swap.pass.cpp b/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.assign/nonmember_swap.pass.cpp
new file mode 100644
index 00000000000..dca637d39fa
--- /dev/null
+++ b/libcxx/test/std/input.output/string.streams/stringbuf/stringbuf.assign/nonmember_swap.pass.cpp
@@ -0,0 +1,66 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <sstream>
+
+// template <class charT, class traits = char_traits<charT>, class Allocator = allocator<charT> >
+// class basic_stringbuf
+
+// template <class charT, class traits, class Allocator>
+//   void swap(basic_stringbuf<charT, traits, Allocator>& x,
+//             basic_stringbuf<charT, traits, Allocator>& y);
+
+#include <sstream>
+#include <cassert>
+
+int main()
+{
+    {
+        std::stringbuf buf1("testing");
+        std::stringbuf buf;
+        swap(buf, buf1);
+        assert(buf.str() == "testing");
+        assert(buf1.str() == "");
+    }
+    {
+        std::stringbuf buf1("testing", std::ios_base::in);
+        std::stringbuf buf;
+        swap(buf, buf1);
+        assert(buf.str() == "testing");
+        assert(buf1.str() == "");
+    }
+    {
+        std::stringbuf buf1("testing", std::ios_base::out);
+        std::stringbuf buf;
+        swap(buf, buf1);
+        assert(buf.str() == "testing");
+        assert(buf1.str() == "");
+    }
+    {
+        std::wstringbuf buf1(L"testing");
+        std::wstringbuf buf;
+        swap(buf, buf1);
+        assert(buf.str() == L"testing");
+        assert(buf1.str() == L"");
+    }
+    {
+        std::wstringbuf buf1(L"testing", std::ios_base::in);
+        std::wstringbuf buf;
+        swap(buf, buf1);
+        assert(buf.str() == L"testing");
+        assert(buf1.str() == L"");
+    }
+    {
+        std::wstringbuf buf1(L"testing", std::ios_base::out);
+        std::wstringbuf buf;
+        swap(buf, buf1);
+        assert(buf.str() == L"testing");
+        assert(buf1.str() == L"");
+    }
+}