1 files changed, 77 insertions, 0 deletions
diff --git a/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/seekpos.pass.cpp b/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/seekpos.pass.cpp
new file mode 100644
index 000000000000..2b809a887a35
--- /dev/null
+++ b/test/std/input.output/string.streams/stringbuf/stringbuf.virtuals/seekpos.pass.cpp
@@ -0,0 +1,77 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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
+
+// pos_type seekpos(pos_type sp,
+//                  ios_base::openmode which = ios_base::in | ios_base::out);
+
+#include <sstream>
+#include <cassert>
+
+int main()
+{
+    {
+        std::stringbuf sb("0123456789", std::ios_base::in);
+        assert(sb.pubseekpos(3, std::ios_base::out) == -1);
+        assert(sb.pubseekpos(3, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekpos(3, std::ios_base::in) == 3);
+        assert(sb.sgetc() == '3');
+    }
+    {
+        std::stringbuf sb("0123456789", std::ios_base::out);
+        assert(sb.pubseekpos(3, std::ios_base::in) == -1);
+        assert(sb.pubseekpos(3, std::ios_base::out | std::ios_base::in) == -1);
+        assert(sb.pubseekpos(3, std::ios_base::out) == 3);
+        assert(sb.sputc('a') == 'a');
+        assert(sb.str() == "012a456789");
+    }
+    {
+        std::stringbuf sb("0123456789");
+        assert(sb.pubseekpos(3, std::ios_base::in) == 3);
+        assert(sb.sgetc() == '3');
+        assert(sb.pubseekpos(3, std::ios_base::out | std::ios_base::in) == 3);
+        assert(sb.sgetc() == '3');
+        assert(sb.sputc('a') == 'a');
+        assert(sb.str() == "012a456789");
+        assert(sb.pubseekpos(3, std::ios_base::out) == 3);
+        assert(sb.sputc('3') == '3');
+        assert(sb.str() == "0123456789");
+    }
+    {
+        std::wstringbuf sb(L"0123456789", std::ios_base::in);
+        assert(sb.pubseekpos(3, std::ios_base::out) == -1);
+        assert(sb.pubseekpos(3, std::ios_base::in | std::ios_base::out) == -1);
+        assert(sb.pubseekpos(3, std::ios_base::in) == 3);
+        assert(sb.sgetc() == L'3');
+    }
+    {
+        std::wstringbuf sb(L"0123456789", std::ios_base::out);
+        assert(sb.pubseekpos(3, std::ios_base::in) == -1);
+        assert(sb.pubseekpos(3, std::ios_base::out | std::ios_base::in) == -1);
+        assert(sb.pubseekpos(3, std::ios_base::out) == 3);
+        assert(sb.sputc(L'a') == L'a');
+        assert(sb.str() == L"012a456789");
+    }
+    {
+        std::wstringbuf sb(L"0123456789");
+        assert(sb.pubseekpos(3, std::ios_base::in) == 3);
+        assert(sb.sgetc() == L'3');
+        assert(sb.pubseekpos(3, std::ios_base::out | std::ios_base::in) == 3);
+        assert(sb.sgetc() == L'3');
+        assert(sb.sputc(L'a') == L'a');
+        assert(sb.str() == L"012a456789");
+        assert(sb.pubseekpos(3, std::ios_base::out) == 3);
+        assert(sb.sputc(L'3') == L'3');
+        assert(sb.str() == L"0123456789");
+    }
+}