#include <string>
#include <boost/thread_safe_signal.hpp>

#define BOOST_TEST_MODULE tests

#define BOOST_TEST_DYN_LINK
#include <boost/test/unit_test.hpp>

// The class I am trying to test.
class person
{
public:
	
	person() : name_() {};
	
	void name(const std::string & name)
	{
		name_ = name;
		updated(*this);
	};
	
	boost::signal<void(const person & person)> updated;

private:
	std::string name_;
};

// A mock handler for handling a person.updated event.
struct mock_handler
{
	mock_handler(const person & subject) : 
		has_been_called_(false), subject_(subject) {};
	
	// Handler.
	void operator()(const person & subject)
	{
		BOOST_TEST_MESSAGE("in mock_handler::operator()");
		
		has_been_called_ = true;
		BOOST_CHECK_EQUAL(&subject == &subject_, true);
	};
	
	// This handler must be called before it goes out of scope.
	~mock_handler()
	{
		BOOST_TEST_MESSAGE("in mock_handler::~mock_handler()");
		
		BOOST_CHECK_EQUAL(has_been_called_, true);
	};

private:
	bool has_been_called_;
	const person & subject_;
};

BOOST_AUTO_TEST_SUITE(person_tests)

// Test that setting a new name triggers the person.updated signal.
BOOST_AUTO_TEST_CASE(setting_name_triggers_update_signal)
{
	BOOST_TEST_MESSAGE("entered test");
	
	person subject;
	mock_handler handler(subject);
	
	subject.updated.connect(handler);
	
	subject.name("Richard");
	
	BOOST_TEST_MESSAGE("exiting test");
}

BOOST_AUTO_TEST_SUITE_END()