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Add explicit tests for reinterpret_pointer_cast. Based on existing pointer_cast tests in shared_ptr_test.cpp

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This commit is contained in:
Chris Glover
2016-12-11 22:18:57 -05:00
parent 61075bb9df
commit 9e568dad6e
2 changed files with 56 additions and 0 deletions
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1
test/Jamfile.v2
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@ -36,6 +36,7 @@ import testing ;
[ run shared_ptr_rv_test.cpp ]
[ run shared_ptr_move_test.cpp ]
[ run shared_ptr_alias_move_test.cpp ]
[ run shared_ptr_reinterpret_pointer_cast_test.cpp ]
[ compile-fail shared_ptr_pv_fail.cpp ]
[ run sp_unary_addr_test.cpp ]
[ compile-fail scoped_ptr_eq_fail.cpp ]

55
test/shared_ptr_reinterpret_pointer_cast_test.cpp Normal file
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@ -0,0 +1,55 @@
//
// shared_pointer_reinterpret_pointer_cast_test.cpp
//
// Copyright (c) 2016 Chris Glover
//
// Distributed under the Boost Software License, Version 1.0.
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt
//
#include <boost/shared_ptr.hpp>
#include <boost/detail/lightweight_test.hpp>
struct X
{};
int main()
{
{
boost::shared_ptr<char> pc;
boost::shared_ptr<int> pi = boost::reinterpret_pointer_cast<int>(pc);
BOOST_TEST(pi.get() == 0);
boost::shared_ptr<X> px = boost::reinterpret_pointer_cast<X>(pc);
BOOST_TEST(px.get() == 0);
}
{
boost::shared_ptr<int> pi(new int);
boost::shared_ptr<char> pc = boost::reinterpret_pointer_cast<char>(pi);
boost::shared_ptr<int> pi2 = boost::reinterpret_pointer_cast<int>(pc);
BOOST_TEST(pi.get() == pi2.get());
BOOST_TEST(!(pi < pi2 || pi2 < pi));
BOOST_TEST(pi.use_count() == 3);
BOOST_TEST(pc.use_count() == 3);
BOOST_TEST(pi2.use_count() == 3);
}
{
boost::shared_ptr<X> px(new X);
boost::shared_ptr<char> pc = boost::reinterpret_pointer_cast<char>(px);
boost::shared_ptr<X> px2 = boost::reinterpret_pointer_cast<X>(pc);
BOOST_TEST(px.get() == px2.get());
BOOST_TEST(!(px < px2 || px2 < px));
BOOST_TEST(px.use_count() == 3);
BOOST_TEST(pc.use_count() == 3);
BOOST_TEST(px2.use_count() == 3);
}
return boost::report_errors();
}