1 files changed, 85 insertions, 0 deletions
diff --git a/test/std/input.output/iostream.format/output.streams/ostream.assign/member_swap.pass.cpp b/test/std/input.output/iostream.format/output.streams/ostream.assign/member_swap.pass.cpp
new file mode 100644
index 0000000000000..8214d6c05b5bf
--- /dev/null
+++ b/test/std/input.output/iostream.format/output.streams/ostream.assign/member_swap.pass.cpp
@@ -0,0 +1,85 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// <ostream>
+
+// template <class charT, class traits = char_traits<charT> >
+// class basic_ostream;
+
+// void swap(basic_ostream& rhs);
+
+#include <ostream>
+#include <cassert>
+
+template <class CharT>
+struct testbuf
+    : public std::basic_streambuf<CharT>
+{
+    testbuf() {}
+};
+
+template <class CharT>
+struct test_ostream
+    : public std::basic_ostream<CharT>
+{
+    typedef std::basic_ostream<CharT> base;
+    test_ostream(testbuf<CharT>* sb) : base(sb) {}
+
+    void swap(test_ostream& s) {base::swap(s);}
+};
+
+int main()
+{
+    {
+        testbuf<char> sb1;
+        testbuf<char> sb2;
+        test_ostream<char> os1(&sb1);
+        test_ostream<char> os2(&sb2);
+        os1.swap(os2);
+        assert(os1.rdbuf() == &sb1);
+        assert(os1.tie() == 0);
+        assert(os1.fill() == ' ');
+        assert(os1.rdstate() == os1.goodbit);
+        assert(os1.exceptions() == os1.goodbit);
+        assert(os1.flags() == (os1.skipws | os1.dec));
+        assert(os1.precision() == 6);
+        assert(os1.getloc().name() == "C");
+        assert(os2.rdbuf() == &sb2);
+        assert(os2.tie() == 0);
+        assert(os2.fill() == ' ');
+        assert(os2.rdstate() == os2.goodbit);
+        assert(os2.exceptions() == os2.goodbit);
+        assert(os2.flags() == (os2.skipws | os2.dec));
+        assert(os2.precision() == 6);
+        assert(os2.getloc().name() == "C");
+    }
+    {
+        testbuf<wchar_t> sb1;
+        testbuf<wchar_t> sb2;
+        test_ostream<wchar_t> os1(&sb1);
+        test_ostream<wchar_t> os2(&sb2);
+        os1.swap(os2);
+        assert(os1.rdbuf() == &sb1);
+        assert(os1.tie() == 0);
+        assert(os1.fill() == ' ');
+        assert(os1.rdstate() == os1.goodbit);
+        assert(os1.exceptions() == os1.goodbit);
+        assert(os1.flags() == (os1.skipws | os1.dec));
+        assert(os1.precision() == 6);
+        assert(os1.getloc().name() == "C");
+        assert(os2.rdbuf() == &sb2);
+        assert(os2.tie() == 0);
+        assert(os2.fill() == ' ');
+        assert(os2.rdstate() == os2.goodbit);
+        assert(os2.exceptions() == os2.goodbit);
+        assert(os2.flags() == (os2.skipws | os2.dec));
+        assert(os2.precision() == 6);
+        assert(os2.getloc().name() == "C");
+    }
+}