libs/signals/test/deletion_test.cpp
// Boost.Signals library
// Copyright Doug Gregor 2001-2003. Use, modification and
// distribution is subject to 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)
// For more information, see http://www.boost.org
#define BOOST_INCLUDE_MAIN
#include <boost/test/test_tools.hpp>
#include <boost/signal.hpp>
#include <iostream>
#include <string>
static boost::BOOST_SIGNALS_NAMESPACE::connection connections[5];
static std::string test_output;
struct remove_connection {
explicit remove_connection(int v = 0, int i = -1) : value(v), idx(i) {}
void operator()() const {
if (idx >= 0)
connections[idx].disconnect();
//return value;
std::cout << value << " ";
test_output += static_cast<char>(value + '0');
}
int value;
int idx;
};
static void
test_remove_self()
{
boost::signal0<void> s0;
connections[0] = s0.connect(remove_connection(0));
connections[1] = s0.connect(remove_connection(1));
connections[2] = s0.connect(remove_connection(2, 2));
connections[3] = s0.connect(remove_connection(3));
std::cout << "Deleting 2" << std::endl;
test_output = "";
s0(); std::cout << std::endl;
BOOST_TEST(test_output == "0123");
test_output = "";
s0(); std::cout << std::endl;
BOOST_TEST(test_output == "013");
s0.disconnect_all_slots();
BOOST_TEST(s0.empty());
connections[0] = s0.connect(remove_connection(0));
connections[1] = s0.connect(remove_connection(1));
connections[2] = s0.connect(remove_connection(2));
connections[3] = s0.connect(remove_connection(3, 3));
std::cout << "Deleting 3" << std::endl;
test_output = "";
s0(); std::cout << std::endl;
BOOST_TEST(test_output == "0123");
test_output = "";
s0(); std::cout << std::endl;
BOOST_TEST(test_output == "012");
s0.disconnect_all_slots();
BOOST_TEST(s0.num_slots() == 0);
connections[0] = s0.connect(remove_connection(0, 0));
connections[1] = s0.connect(remove_connection(1));
connections[2] = s0.connect(remove_connection(2));
connections[3] = s0.connect(remove_connection(3));
std::cout << "Deleting 0" << std::endl;
test_output = "";
s0(); std::cout << std::endl;
BOOST_TEST(test_output == "0123");
test_output = "";
s0(); std::cout << std::endl;
BOOST_TEST(test_output == "123");
s0.disconnect_all_slots();
BOOST_TEST(s0.empty());
connections[0] = s0.connect(remove_connection(0, 0));
connections[1] = s0.connect(remove_connection(1, 1));
connections[2] = s0.connect(remove_connection(2, 2));
connections[3] = s0.connect(remove_connection(3, 3));
std::cout << "Mass suicide" << std::endl;
test_output = "";
s0(); std::cout << std::endl;
BOOST_TEST(test_output == "0123");
test_output = "";
s0(); std::cout << std::endl;
BOOST_TEST(test_output == "");
}
static void
test_remove_prior()
{
boost::signal0<void> s0;
connections[0] = s0.connect(remove_connection(0));
connections[1] = s0.connect(remove_connection(1, 0));
connections[2] = s0.connect(remove_connection(2));
connections[3] = s0.connect(remove_connection(3));
std::cout << "1 removes 0" << std::endl;
test_output = "";
s0(); std::cout << std::endl;
BOOST_TEST(test_output == "0123");
test_output = "";
s0(); std::cout << std::endl;
BOOST_TEST(test_output == "123");
s0.disconnect_all_slots();
BOOST_TEST(s0.empty());
connections[0] = s0.connect(remove_connection(0));
connections[1] = s0.connect(remove_connection(1));
connections[2] = s0.connect(remove_connection(2));
connections[3] = s0.connect(remove_connection(3, 2));
std::cout << "3 removes 2" << std::endl;
test_output = "";
s0(); std::cout << std::endl;
BOOST_TEST(test_output == "0123");
test_output = "";
s0(); std::cout << std::endl;
BOOST_TEST(test_output == "013");
}
static void
test_remove_after()
{
boost::signal0<void> s0;
connections[0] = s0.connect(remove_connection(0, 1));
connections[1] = s0.connect(remove_connection(1));
connections[2] = s0.connect(remove_connection(2));
connections[3] = s0.connect(remove_connection(3));
std::cout << "0 removes 1" << std::endl;
test_output = "";
s0(); std::cout << std::endl;
BOOST_TEST(test_output == "023");
test_output = "";
s0(); std::cout << std::endl;
BOOST_TEST(test_output == "023");
s0.disconnect_all_slots();
BOOST_TEST(s0.empty());
connections[0] = s0.connect(remove_connection(0));
connections[1] = s0.connect(remove_connection(1, 3));
connections[2] = s0.connect(remove_connection(2));
connections[3] = s0.connect(remove_connection(3));
std::cout << "1 removes 3" << std::endl;
test_output = "";
s0(); std::cout << std::endl;
BOOST_TEST(test_output == "012");
test_output = "";
s0(); std::cout << std::endl;
BOOST_TEST(test_output == "012");
}
static void
test_bloodbath()
{
boost::signal0<void> s0;
connections[0] = s0.connect(remove_connection(0, 1));
connections[1] = s0.connect(remove_connection(1, 1));
connections[2] = s0.connect(remove_connection(2, 0));
connections[3] = s0.connect(remove_connection(3, 2));
std::cout << "0 removes 1, 2 removes 0, 3 removes 2" << std::endl;
test_output = "";
s0(); std::cout << std::endl;
BOOST_TEST(test_output == "023");
test_output = "";
s0(); std::cout << std::endl;
BOOST_TEST(test_output == "3");
}
int test_main(int, char* [])
{
test_remove_self();
test_remove_prior();
test_remove_after();
test_bloodbath();
return 0;
}