1 files changed, 79 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/25_algorithms/rotate/rotate.cc b/libstdc++-v3/testsuite/25_algorithms/rotate/rotate.cc
new file mode 100644
index 000000000..31bb88e5d
--- /dev/null
+++ b/libstdc++-v3/testsuite/25_algorithms/rotate/rotate.cc
@@ -0,0 +1,79 @@
+// Copyright (C) 2001, 2004, 2005, 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/>.
+
+// 25.?? algorithms, rotate()
+
+#include <algorithm>
+#include <testsuite_hooks.h>
+#include <list>
+
+bool test __attribute__((unused)) = true;
+
+int A[] = {1, 2, 3, 4, 5, 6, 7};
+int B[] = {2, 3, 4, 5, 6, 7, 1};
+int C[] = {1, 2, 3, 4, 5, 6, 7};
+int D[] = {5, 6, 7, 1, 2, 3, 4};
+const int N = sizeof(A) / sizeof(int);
+
+/* need a test for a forward iterator -- can't think of one that makes sense */
+
+/* biderectional iterator */
+void
+test02()
+{
+    using std::rotate;
+    typedef std::list<int> Container;
+
+    Container a(A, A + N);
+    VERIFY(std::equal(a.begin(), a.end(), A));
+
+    Container::iterator i = a.begin();
+    rotate(a.begin(), ++i, a.end());
+    VERIFY(std::equal(a.begin(), a.end(), B));
+
+    i = a.end();
+    rotate(a.begin(), --i, a.end());
+    VERIFY(std::equal(a.begin(), a.end(), C));
+
+    i = a.begin();
+    std::advance(i, 3);
+    rotate(a.begin(), ++i, a.end());
+    VERIFY(std::equal(a.begin(), a.end(), D));
+}
+
+/* random iterator */
+void
+test03()
+{
+    using std::rotate;
+    rotate(A, A + 1, A + N);
+    VERIFY(std::equal(A, A + N, B));
+
+    rotate(A, A + N - 1, A + N);
+    VERIFY(std::equal(A, A + N, C));
+
+    rotate(A, A + 4, A + N);
+    VERIFY(std::equal(A, A + N, D));
+}
+
+int
+main()
+{
+  test02();
+  test03();
+  return 0;
+}