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Diffstat (limited to 'boost/test/predicate_result.hpp')
-rw-r--r-- | boost/test/predicate_result.hpp | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/boost/test/predicate_result.hpp b/boost/test/predicate_result.hpp new file mode 100644 index 0000000000..16ae48825a --- /dev/null +++ b/boost/test/predicate_result.hpp @@ -0,0 +1,88 @@ +// (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 <boost/test/utils/class_properties.hpp> +#include <boost/test/utils/wrap_stringstream.hpp> +#include <boost/test/utils/basic_cstring/basic_cstring.hpp> + +// Boost +#include <boost/shared_ptr.hpp> +#include <boost/detail/workaround.hpp> + +// STL +#include <cstddef> // for std::size_t + +#include <boost/test/detail/suppress_warnings.hpp> + +//____________________________________________________________________________// + +namespace boost { + +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 boost + +//____________________________________________________________________________// + +#include <boost/test/detail/enable_warnings.hpp> + +#endif // BOOST_TEST_PREDICATE_RESULT_HPP_012705GER |