boost_smart_ptr/test/make_shared_array_esft_test.cpp

/*
 * Copyright (c) 2012 Glen Joseph Fernandes 
 * glenfe at live dot com
 *
 * Distributed under the Boost Software License, 
 * Version 1.0. (See accompanying file LICENSE_1_0.txt 
 * or copy at http://boost.org/LICENSE_1_0.txt)
 */
#include <boost/detail/lightweight_test.hpp>
#include <boost/smart_ptr/enable_shared_from_this.hpp>
#include <boost/smart_ptr/make_shared_array.hpp>

class type
    : public boost::enable_shared_from_this<type> {
public:
    static unsigned int instances;
    explicit type() {
        instances++;
    }
    ~type() {
        instances--;
    }
private:
    type(const type&);
    type& operator=(const type&);
};

unsigned int type::instances = 0;

int main() {
    BOOST_TEST(type::instances == 0);
    {
        boost::shared_ptr<type[]> a1 = boost::make_shared<type[]>(3);
        try {
            a1[0].shared_from_this();
            BOOST_ERROR("shared_from_this did not throw");
        } catch (const boost::bad_weak_ptr&) {
            BOOST_TEST(type::instances == 3);
        }
    }
    BOOST_TEST(type::instances == 0);
    {
        boost::shared_ptr<type[]> a1 = boost::make_shared_noinit<type[]>(3);
        try {
            a1[0].shared_from_this();
            BOOST_ERROR("shared_from_this did not throw");
        } catch (const boost::bad_weak_ptr&) {
            BOOST_TEST(type::instances == 3);
        }
    }
    return boost::report_errors();
}