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// (C) Copyright Gennadiy Rozental 2001-2008.
// Distributed under 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)
// See http://www.boost.org/libs/test for the library home page.
//
// File : $RCSfile$
//
// Version : $Revision: 54633 $
//
// Description : enhanced result for test predicate that include message explaining failure
// ***************************************************************************
#ifndef BOOST_TEST_PREDICATE_RESULT_HPP_012705GER
#define BOOST_TEST_PREDICATE_RESULT_HPP_012705GER
// Boost.Test
#include <ndnboost/test/utils/class_properties.hpp>
#include <ndnboost/test/utils/wrap_stringstream.hpp>
#include <ndnboost/test/utils/basic_cstring/basic_cstring.hpp>
// Boost
#include <ndnboost/shared_ptr.hpp>
#include <ndnboost/detail/workaround.hpp>
// STL
#include <cstddef> // for std::size_t
#include <ndnboost/test/detail/suppress_warnings.hpp>
//____________________________________________________________________________//
namespace ndnboost {
namespace test_tools {
// ************************************************************************** //
// ************** predicate_result ************** //
// ************************************************************************** //
class BOOST_TEST_DECL predicate_result {
typedef unit_test::const_string const_string;
struct dummy { void nonnull() {}; };
typedef void (dummy::*safe_bool)();
public:
// Constructor
predicate_result( bool pv_ )
: p_predicate_value( pv_ )
{}
template<typename BoolConvertable>
predicate_result( BoolConvertable const& pv_ ) : p_predicate_value( !!pv_ ) {}
// Access methods
bool operator!() const { return !p_predicate_value; }
void operator=( bool pv_ ) { p_predicate_value.value = pv_; }
operator safe_bool() const { return !!p_predicate_value ? &dummy::nonnull : 0; }
// Public properties
BOOST_READONLY_PROPERTY( bool, (predicate_result) ) p_predicate_value;
// Access methods
bool has_empty_message() const { return !m_message; }
wrap_stringstream& message()
{
if( !m_message )
m_message.reset( new wrap_stringstream );
return *m_message;
}
const_string message() const { return !m_message ? const_string() : const_string( m_message->str() ); }
private:
// Data members
shared_ptr<wrap_stringstream> m_message;
};
} // namespace test_tools
} // namespace ndnboost
//____________________________________________________________________________//
#include <ndnboost/test/detail/enable_warnings.hpp>
#endif // BOOST_TEST_PREDICATE_RESULT_HPP_012705GER