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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libstdc++-v3/testsuite/20_util/owner_less | |
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Diffstat (limited to 'libstdc++-v3/testsuite/20_util/owner_less')
-rw-r--r-- | libstdc++-v3/testsuite/20_util/owner_less/cmp.cc | 135 |
1 files changed, 135 insertions, 0 deletions
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 index 000000000..e1524cc18 --- /dev/null +++ b/libstdc++-v3/testsuite/20_util/owner_less/cmp.cc @@ -0,0 +1,135 @@ +// { 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() +{ + bool test __attribute__((unused)) = true; + + // 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() +{ + bool test __attribute__((unused)) = true; + + 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() +{ + bool test __attribute__((unused)) = true; + + 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() +{ + bool test __attribute__((unused)) = true; + + 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; +} |