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/* Copyright 2002 - 2016, The libsigc++ Development Team
* Assigned to public domain. Use as you wish without restriction.
*/
#include "testutilities.h"
#include <sigc++/trackable.h>
#include <sigc++/signal.h>
#include <iomanip>
#include <vector>
namespace
{
TestUtilities* util = nullptr;
std::ostringstream result_stream;
struct arithmetic_mean_accumulator
{
template<typename T_iterator>
double operator()(T_iterator first, T_iterator last) const
{
double value_ = 0;
int n_ = 0;
for (; first != last; ++first, ++n_)
value_ += *first;
return (n_ ? value_ / n_ : -1); // empty slot list <=> n_==0
}
};
template<typename Ret>
struct vector_accumulator
{
template<typename T_iterator>
std::vector<Ret> operator()(T_iterator first, T_iterator last) const
{
std::vector<Ret> vec;
for (; first != last; ++first)
vec.push_back(*first);
return vec;
}
};
int
foo(int i)
{
const int result = 3 * i + 1;
result_stream << "foo: " << result << ", ";
return result;
}
int
bar(double i)
{
const int result = 5 * int(i) - 3;
result_stream << "bar: " << result << ", ";
return result;
}
struct A : public sigc::trackable
{
int foo(int i)
{
const int result = 20 * i - 14;
result_stream << "A::foo: " << result << ", ";
return result;
}
};
void
test_empty_signal()
{
sigc::signal<int(int)>::accumulated<arithmetic_mean_accumulator> sig;
sigc::signal<int(int)>::accumulated<vector_accumulator<int>> sig_vec;
result_stream << "Result (empty slot list): " << sig(0);
util->check_result(result_stream, "Result (empty slot list): -1");
result_stream << "Vector result (empty slot list): "
<< (sig_vec(0).empty() ? "empty" : "not empty");
util->check_result(result_stream, "Vector result (empty slot list): empty");
}
template<typename T_signal>
void
test_mean()
{
typename T_signal::template accumulated<arithmetic_mean_accumulator> sig;
A a;
sig.connect(sigc::ptr_fun(&foo));
sig.connect(sigc::mem_fun(a, &A::foo));
sig.connect(sigc::ptr_fun(&bar));
double dres = sig(1);
result_stream << "Mean accumulator: Result (i=1): " << std::fixed << std::setprecision(3) << dres;
util->check_result(
result_stream, "foo: 4, A::foo: 6, bar: 2, Mean accumulator: Result (i=1): 4.000");
dres = sig(11);
result_stream << "Mean accumulator: Plain Result (i=11): " << std::fixed << std::setprecision(3)
<< dres;
util->check_result(
result_stream, "foo: 34, A::foo: 206, bar: 52, Mean accumulator: Plain Result (i=11): 97.333");
}
void
test_vector_accumulator()
{
sigc::signal<int(int)>::accumulated<vector_accumulator<int>> sig_vec;
A a;
sig_vec.connect(sigc::ptr_fun(&foo));
sig_vec.connect(sigc::mem_fun(a, &A::foo));
sig_vec.connect(sigc::ptr_fun(&bar));
auto res1 = sig_vec(1);
result_stream << "Vector accumulator: Result (i=1): ";
for (auto num : res1)
result_stream << num << " ";
util->check_result(
result_stream, "foo: 4, A::foo: 6, bar: 2, Vector accumulator: Result (i=1): 4 6 2 ");
auto res3 = sig_vec(3);
result_stream << "Vector accumulator: Result (i=3): ";
for (auto num : res3)
result_stream << num << " ";
util->check_result(
result_stream, "foo: 10, A::foo: 46, bar: 12, Vector accumulator: Result (i=3): 10 46 12 ");
}
} // end anonymous namespace
int
main(int argc, char* argv[])
{
util = TestUtilities::get_instance();
if (!util->check_command_args(argc, argv))
return util->get_result_and_delete_instance() ? EXIT_SUCCESS : EXIT_FAILURE;
test_empty_signal();
test_mean<sigc::signal<int(int)>>();
test_mean<sigc::trackable_signal<int(int)>>();
test_vector_accumulator();
return util->get_result_and_delete_instance() ? EXIT_SUCCESS : EXIT_FAILURE;
}
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