| 1 | // (C) Copyright Gennadiy Rozental 2001. |
|---|---|
| 2 | // Distributed under the Boost Software License, Version 1.0. |
| 3 | // (See accompanying file LICENSE_1_0.txt or copy at |
| 4 | // http://www.boost.org/LICENSE_1_0.txt) |
| 5 | |
| 6 | // See http://www.boost.org/libs/test for the library home page. |
| 7 | // |
| 8 | /// @file |
| 9 | /// Enhanced result for test predicate that include message explaining failure |
| 10 | // *************************************************************************** |
| 11 | |
| 12 | #ifndef BOOST_TEST_PREDICATE_RESULT_HPP_012705GER |
| 13 | #define BOOST_TEST_PREDICATE_RESULT_HPP_012705GER |
| 14 | |
| 15 | // Boost.Test |
| 16 | #include <boost/test/utils/class_properties.hpp> |
| 17 | #include <boost/test/utils/wrap_stringstream.hpp> |
| 18 | #include <boost/test/utils/basic_cstring/basic_cstring.hpp> |
| 19 | |
| 20 | // Boost |
| 21 | #include <boost/shared_ptr.hpp> |
| 22 | #include <boost/detail/workaround.hpp> |
| 23 | |
| 24 | // STL |
| 25 | #include <cstddef> // for std::size_t |
| 26 | |
| 27 | #include <boost/test/detail/suppress_warnings.hpp> |
| 28 | |
| 29 | //____________________________________________________________________________// |
| 30 | |
| 31 | namespace boost { |
| 32 | namespace test_tools { |
| 33 | |
| 34 | // ************************************************************************** // |
| 35 | // ************** assertion_result ************** // |
| 36 | // ************************************************************************** // |
| 37 | |
| 38 | //!@brief Type used for storing the result of an assertion. |
| 39 | class BOOST_TEST_DECL assertion_result { |
| 40 | |
| 41 | //!@internal |
| 42 | typedef unit_test::const_string const_string; |
| 43 | |
| 44 | //!@internal |
| 45 | struct dummy { void nonnull() {} }; |
| 46 | |
| 47 | //!@internal |
| 48 | typedef void (dummy::*safe_bool)(); |
| 49 | |
| 50 | public: |
| 51 | // Constructor |
| 52 | assertion_result( bool pv_ ) |
| 53 | : p_predicate_value( pv_ ) |
| 54 | {} |
| 55 | |
| 56 | template<typename BoolConvertable> |
| 57 | assertion_result( BoolConvertable const& pv_ ) : p_predicate_value( !!pv_ ) {} |
| 58 | |
| 59 | // Access methods |
| 60 | bool operator!() const { return !p_predicate_value; } |
| 61 | void operator=( bool pv_ ) { p_predicate_value.value = pv_; } |
| 62 | operator safe_bool() const { return !!p_predicate_value ? &dummy::nonnull : 0; } |
| 63 | |
| 64 | // Public properties |
| 65 | BOOST_READONLY_PROPERTY( bool, (assertion_result) ) p_predicate_value; |
| 66 | |
| 67 | // Access methods |
| 68 | bool has_empty_message() const { return !m_message; } |
| 69 | wrap_stringstream& message() |
| 70 | { |
| 71 | if( !m_message ) |
| 72 | m_message.reset( p: new wrap_stringstream ); |
| 73 | |
| 74 | return *m_message; |
| 75 | } |
| 76 | const_string message() const { return !m_message ? const_string() : const_string( m_message->str() ); } |
| 77 | |
| 78 | private: |
| 79 | // Data members |
| 80 | shared_ptr<wrap_stringstream> m_message; |
| 81 | }; |
| 82 | |
| 83 | typedef assertion_result predicate_result; |
| 84 | |
| 85 | } // namespace test_tools |
| 86 | } // namespace boost |
| 87 | |
| 88 | #include <boost/test/detail/enable_warnings.hpp> |
| 89 | |
| 90 | #endif // BOOST_TEST_PREDICATE_RESULT_HPP_012705GER |
| 91 |