147 lines
3.8 KiB
C++
147 lines
3.8 KiB
C++
// -*- c++ -*-
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/* Copyright 2002, The libsigc++ Development Team
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* Assigned to public domain. Use as you wish without restriction.
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*/
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#include "testutilities.h"
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#include <sigc++/trackable.h>
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#include <sigc++/signal.h>
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#include <sigc++/functors/ptr_fun.h>
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#include <sigc++/functors/mem_fun.h>
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#include <sstream>
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#include <iomanip>
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#include <vector>
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#include <cstdlib>
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namespace
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{
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TestUtilities* util = nullptr;
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std::ostringstream result_stream;
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struct arithmetic_mean_accumulator
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{
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typedef double result_type;
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template<typename T_iterator>
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double operator()(T_iterator first, T_iterator last) const
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{
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double value_ = 0;
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int n_ = 0;
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for (; first != last; ++first, ++n_)
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value_ += *first;
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return (n_ ? value_ / n_ : -1); // empty slot list <=> n_==0
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}
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};
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template<class Ret>
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struct vector_accumulator
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{
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typedef std::vector<Ret> result_type;
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template<typename T_iterator>
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result_type operator()(T_iterator first, T_iterator last) const
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{
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result_type vec;
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for (; first != last; ++first)
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vec.push_back(*first);
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return vec;
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}
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};
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int foo(int i)
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{
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const int result = 3 * i + 1;
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result_stream << "foo: " << result << ", ";
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return result;
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}
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int bar(double i)
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{
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const int result = 5 * int(i) - 3;
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result_stream << "bar: " << result << ", ";
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return result;
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}
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struct A : public sigc::trackable
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{
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int foo(int i)
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{
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const int result = 20 * i - 14;
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result_stream << "A::foo: " << result << ", ";
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return result;
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}
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};
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void test_empty_signal()
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{
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sigc::signal<int,int>::accumulated<arithmetic_mean_accumulator> sig;
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sigc::signal<int,int>::accumulated<vector_accumulator<int> > sig_vec;
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result_stream << "Result (empty slot list): " << sig(0);
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util->check_result(result_stream, "Result (empty slot list): -1");
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result_stream << "Vector result (empty slot list): "
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<< (sig_vec(0).empty() ? "empty" : "not empty");
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util->check_result(result_stream, "Vector result (empty slot list): empty");
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}
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void test_mean()
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{
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sigc::signal<int,int>::accumulated<arithmetic_mean_accumulator> sig;
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A a;
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sig.connect(sigc::ptr_fun1(&foo));
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sig.connect(sigc::mem_fun1(a, &A::foo));
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sig.connect(sigc::ptr_fun1(&bar));
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double dres = sig(1);
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result_stream << "Mean accumulator: Result (i=1): "
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<< std::fixed << std::setprecision(3) << dres;
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util->check_result(result_stream,
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"foo: 4, A::foo: 6, bar: 2, Mean accumulator: Result (i=1): 4.000");
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dres = sig(11);
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result_stream << "Mean accumulator: Plain Result (i=11): "
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<< std::fixed << std::setprecision(3) << dres;
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util->check_result(result_stream,
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"foo: 34, A::foo: 206, bar: 52, Mean accumulator: Plain Result (i=11): 97.333");
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}
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void test_vector_accumulator()
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{
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sigc::signal<int,int>::accumulated<vector_accumulator<int> > sig_vec;
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A a;
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sig_vec.connect(sigc::ptr_fun(&foo));
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sig_vec.connect(sigc::mem_fun(a, &A::foo));
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sig_vec.connect(sigc::ptr_fun(&bar));
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auto res1 = sig_vec(1);
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result_stream << "Vector accumulator: Result (i=1): ";
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for (auto num : res1)
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result_stream << num << " ";
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util->check_result(result_stream,
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"foo: 4, A::foo: 6, bar: 2, Vector accumulator: Result (i=1): 4 6 2 ");
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auto res3 = sig_vec(3);
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result_stream << "Vector accumulator: Result (i=3): ";
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for (auto num : res3)
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result_stream << num << " ";
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util->check_result(result_stream,
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"foo: 10, A::foo: 46, bar: 12, Vector accumulator: Result (i=3): 10 46 12 ");
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}
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} // end anonymous namespace
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int main(int argc, char* argv[])
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{
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util = TestUtilities::get_instance();
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if (!util->check_command_args(argc, argv))
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return util->get_result_and_delete_instance() ? EXIT_SUCCESS : EXIT_FAILURE;
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test_empty_signal();
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test_mean();
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test_vector_accumulator();
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return util->get_result_and_delete_instance() ? EXIT_SUCCESS : EXIT_FAILURE;
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}
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