Imported gcc-4.4.3

[msp430-gcc.git] / libstdc++-v3 / testsuite / 20_util / shared_ptr / comparison / less.cc

diff --git a/libstdc++-v3/testsuite/20_util/shared_ptr/comparison/less.cc b/libstdc++-v3/testsuite/20_util/shared_ptr/comparison/less.cc
new file mode 100644 (file)
index 0000000..7f35dbe
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/shared_ptr/comparison/less.cc
@@ -0,0 +1,96 @@
+// { dg-options "-std=gnu++0x" }
+
+// Copyright (C) 2008, 2009 Free Software Foundation
+//
+// 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/>.
+
+// 20.8.13.2 Template class shared_ptr [util.smartptr.shared]
+
+#include <memory>
+#include <testsuite_hooks.h>
+
+struct A { };
+
+namespace std
+{
+  template<>
+    struct less<A*> : binary_function<A*,A*,bool>
+    {
+      static int count;
+      bool operator()(A* l, A* r) { ++count; return l < r; }
+    };
+  int less<A*>::count = 0;
+}
+
+// 20.8.13.2.7 shared_ptr comparison [util.smartptr.shared.cmp]
+
+
+int
+test01()
+{
+  std::less<std::shared_ptr<A>> less;
+  // test empty shared_ptrs compare equivalent
+  std::shared_ptr<A> p1;
+  std::shared_ptr<A> p2;
+  VERIFY( !less(p1, p2) && !less(p2, p1) );
+  VERIFY( std::less<A*>::count == 2 );
+  return 0;
+}
+
+
+// Construction from pointer
+int
+test02()
+{
+  std::less<std::shared_ptr<A>> less;
+
+  std::shared_ptr<A> empty;
+  std::shared_ptr<A> p1(new A);
+  std::shared_ptr<A> p2(new A);
+
+  VERIFY( less(p1, p2) || less(p2, p1) );
+  VERIFY( !(less(p1, p2) && less(p2, p1)) );
+
+  p1.reset();
+  VERIFY( !less(p1, empty) && !less(empty, p1) );
+
+  p2.reset();
+  VERIFY( !less(p1, p2) && !less(p2, p1) );
+
+  return 0;
+}
+
+// Aliasing
+int
+test03()
+{
+  std::less<std::shared_ptr<A>> less;
+
+  A a;
+  std::shared_ptr<A> p1(new A);
+  std::shared_ptr<A> p2(p1, &a);
+  VERIFY( less(p1, p2) || less(p2, p1) );
+
+  return 0;
+}
+int 
+main()
+{
+  test01();
+  test02();
+  test03();
+  return 0;
+}