--- /dev/null
+// Copyright (C) 2004, 2009 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library. This library is free
+// software; you can redistribute it and/or modify it under the
+// terms of the GNU General Public License as published by the
+// Free Software Foundation; either version 3, or (at your option)
+// any later version.
+
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+
+// 27.6.1.1.2 class basic_istream::sentry
+
+#include <istream>
+#include <sstream>
+#include <testsuite_hooks.h>
+
+void test01()
+{
+ bool test __attribute__((unused)) = true;
+ const wchar_t* lit01 = L"stereolab on the bolsinga tip";
+ const std::wstring str01(lit01);
+
+ std::wstringbuf strbuf01;
+ std::wstringbuf strbuf02(str01);
+ std::wistream istr01(&strbuf01);
+ std::wistream istr02(&strbuf02);
+
+ // test negatives
+ std::wistream::sentry sentry01(istr01);
+ VERIFY( bool(sentry01) == false );
+
+ std::wistream::sentry sentry02(istr01, true);
+ VERIFY( bool(sentry02) == false );
+
+ // positive tests
+ std::wistream::sentry sentry03(istr02);
+ VERIFY( bool(sentry03) == true );
+
+ std::wistream::sentry sentry04(istr02, true);
+ VERIFY( bool(sentry04) == true );
+}
+
+int main()
+{
+ test01();
+ return 0;
+}