Imported gcc-4.4.3

[msp430-gcc.git] / libstdc++-v3 / testsuite / 20_util / owner_less / cmp.cc

diff --git a/libstdc++-v3/testsuite/20_util/owner_less/cmp.cc b/libstdc++-v3/testsuite/20_util/owner_less/cmp.cc
new file mode 100644 (file)
index 0000000..440ac76
--- /dev/null
+++ b/libstdc++-v3/testsuite/20_util/owner_less/cmp.cc
@@ -0,0 +1,127 @@
+// { 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/>.
+
+// 20.8.13.4 Template class owner_less [util.smartptr.ownerless]
+
+#include <memory>
+#include <algorithm>
+#include <testsuite_hooks.h>
+
+struct A { };
+
+struct B { A a[2]; };
+
+// 20.8.13.4 Template class owner_less [util.smartptr.ownerless]
+
+int
+test01()
+{
+    // test empty shared_ptrs compare equivalent
+    std::owner_less<std::shared_ptr<A>> less;
+    std::owner_less<std::weak_ptr<A>> wless;
+    std::shared_ptr<A> p1;
+    std::shared_ptr<A> p2;
+    VERIFY( !less(p1, p2) && !less(p2, p1) );
+    std::weak_ptr<A> p3;
+    VERIFY( !less(p1, p3) && !less(p3, p1) );
+    VERIFY( !wless(p1, p3) && !wless(p3, p1) );
+    return 0;
+}
+
+
+// Construction from pointer
+int
+test02()
+{
+  std::owner_less<std::shared_ptr<A>> less;
+  std::owner_less<std::weak_ptr<A>> wless;
+
+  std::shared_ptr<A> empty;
+
+  std::shared_ptr<A> a1(new A);
+  VERIFY( less(empty, a1) || less(a1, empty) );
+
+  std::shared_ptr<A> a2(new A);
+  VERIFY( less(a1, a2) || less(a2, a1) );
+
+  std::weak_ptr<A> w1(a1);
+  VERIFY( !less(a1, w1) && !less(w1, a1) );
+
+  std::weak_ptr<A> w2(a2);
+  VERIFY( wless(w1, w2) || wless(w2, w1) );
+
+  a1.reset();
+  VERIFY( !less(empty, a1) && !less(a1, empty) );
+  VERIFY( less(a1, w1) || less(w1, a1) );
+
+  a2.reset();
+  VERIFY( !less(a2, a1) && !less(a1, a2) );
+
+  return 0;
+}
+
+// aliasing
+int
+test03()
+{
+  std::owner_less<std::shared_ptr<A>> less;
+  std::owner_less<std::weak_ptr<A>> wless;
+
+  std::shared_ptr<B> b(new B);
+  std::shared_ptr<A> a0(b, &b->a[0]);
+  std::shared_ptr<A> a1(b, &b->a[1]);
+  // values are different but owners are equivalent:
+  VERIFY( a0 < a1 && !less(a0, a1) && !less(a1, a0) );
+
+  std::weak_ptr<A> w0(a0);
+  std::weak_ptr<A> w1(a1);
+  VERIFY( !wless(w0, w1) && !wless(w1, w0) );
+  VERIFY( !less(a0, w1) && !less(w1, a0) );
+  VERIFY( !wless(w0, a1) && !wless(a1, w0) );
+
+  return 0;
+}
+
+// strict weak ordering
+int
+test04()
+{
+  std::owner_less<std::shared_ptr<A>> less;
+
+  std::shared_ptr<A> a[3];
+  a[0].reset(new A);
+  a[1].reset(new A);
+  a[2].reset(new A);
+  std::sort(a, a+3, less);
+  VERIFY( !less(a[0], a[0]) );
+  VERIFY( less(a[0], a[1]) && !less(a[1], a[0]) );
+  VERIFY( less(a[0], a[1]) && less(a[1], a[2]) && less(a[0], a[2]) );
+
+  return 0;
+}
+
+int 
+main()
+{
+  test01();
+  test02();
+  test03();
+  test04();
+  return 0;
+}