libs/signals/test/ordering_test.cpp
// Boost.Signals library
// Copyright Douglas Gregor 2002-2004. 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
#include <boost/test/minimal.hpp>
#include <boost/signal.hpp>
#include <iostream>
#include <vector>
#include <algorithm>
#include <cstdlib>
#include <ctime>
std::vector<int> valuesOutput;
bool ungrouped1 = false;
bool ungrouped2 = false;
bool ungrouped3 = false;
struct emit_int {
emit_int(int v) : value(v) {}
void operator()() const
{
BOOST_CHECK(value == 42 || (!ungrouped1 && !ungrouped2 && !ungrouped3));
valuesOutput.push_back(value);
std::cout << value << ' ';
}
private:
int value;
};
struct write_ungrouped1 {
void operator()() const
{
BOOST_CHECK(!ungrouped1);
ungrouped1 = true;
std::cout << "(Ungrouped #1)" << ' ';
}
};
struct write_ungrouped2 {
void operator()() const
{
BOOST_CHECK(!ungrouped2);
ungrouped2 = true;
std::cout << "(Ungrouped #2)" << ' ';
}
};
struct write_ungrouped3 {
void operator()() const
{
BOOST_CHECK(!ungrouped3);
ungrouped3 = true;
std::cout << "(Ungrouped #3)" << ' ';
}
};
int test_main(int, char* [])
{
using namespace std;
srand(time(0));
std::vector<int> sortedValues;
boost::signal0<void> sig;
sig.connect(write_ungrouped1());
for (int i = 0; i < 100; ++i) {
#ifdef BOOST_NO_STDC_NAMESPACE
int v = rand() % 100;
#else
int v = std::rand() % 100;
#endif
sortedValues.push_back(v);
sig.connect(v, emit_int(v));
if (i == 50) {
sig.connect(write_ungrouped2());
}
}
sig.connect(write_ungrouped3());
std::sort(sortedValues.begin(), sortedValues.end());
// 17 at beginning, 42 at end
sortedValues.insert(sortedValues.begin(), 17);
sig.connect(emit_int(17), boost::BOOST_SIGNALS_NAMESPACE::at_front);
sortedValues.push_back(42);
sig.connect(emit_int(42));
sig();
std::cout << std::endl;
BOOST_CHECK(valuesOutput == sortedValues);
BOOST_CHECK(ungrouped1);
BOOST_CHECK(ungrouped2);
BOOST_CHECK(ungrouped3);
return 0;
}