boost/test/unit_test_log_formatter.hpp
// (C) Copyright Gennadiy Rozental 2001. // 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 /// @brief Defines unit test log formatter interface /// /// You can define a class with implements this interface and use an instance of it /// as a Unit Test Framework log formatter // *************************************************************************** #ifndef BOOST_TEST_UNIT_TEST_LOG_FORMATTER_HPP_071894GER #define BOOST_TEST_UNIT_TEST_LOG_FORMATTER_HPP_071894GER // Boost.Test #include <boost/test/detail/global_typedef.hpp> #include <boost/test/detail/log_level.hpp> #include <boost/test/detail/fwd_decl.hpp> // STL #include <iosfwd> #include <string> // for std::string #include <iostream> #include <boost/test/detail/suppress_warnings.hpp> //____________________________________________________________________________// namespace boost { namespace unit_test { // ************************************************************************** // /// Collection of log entry attributes // ************************************************************************** // struct BOOST_TEST_DECL log_entry_data { log_entry_data() { m_file_name.reserve( 200 ); } std::string m_file_name; ///< log entry file name std::size_t m_line_num; ///< log entry line number log_level m_level; ///< log entry level void clear() { m_file_name.erase(); m_line_num = 0; m_level = log_nothing; } }; // ************************************************************************** // /// Collection of log checkpoint attributes // ************************************************************************** // struct BOOST_TEST_DECL log_checkpoint_data { const_string m_file_name; ///< log checkpoint file name std::size_t m_line_num; ///< log checkpoint file name std::string m_message; ///< log checkpoint message void clear() { m_file_name.clear(); m_line_num = 0; m_message = std::string(); } }; // ************************************************************************** // /// @brief Abstract Unit Test Framework log formatter interface /// /// During the test module execution Unit Test Framework can report messages about success /// or failure of assertions, which test suites are being run and more (specifically which /// messages are reported depends on log level threshold selected by the user). /// /// All these messages constitute Unit Test Framework log. There are many ways (formats) to present /// these messages to the user. /// /// Boost.Test comes with three formats: /// - Compiler-like log format: intended for human consumption/diagnostic /// - XML based log format: intended for processing by automated regression test systems. /// - JUNIT based log format: intended for processing by automated regression test systems. /// /// If you want to produce some other format you need to implement class with specific interface and use /// method @c unit_test_log_t::set_formatter during a test module initialization to set an active formatter. /// The class unit_test_log_formatter defines this interface. /// /// This interface requires you to format all possible messages being produced in the log. /// These includes error messages about failed assertions, messages about caught exceptions and /// information messages about test units being started/ended. All the methods in this interface takes /// a reference to standard stream as a first argument. This is where final messages needs to be directed /// to. Also you are given all the information necessary to produce a message. /// /// @par Since Boost 1.62: /// - Each formatter may indicate the default output stream. This is convenient for instance for streams intended /// for automated processing that indicate a file. See @c get_default_stream_description for more details. /// - Each formatter may manage its own log level through the getter/setter @c get_log_level and @c set_log_level . /// /// @see /// - boost::unit_test::test_observer for an indication of the calls of the test observer interface class BOOST_TEST_DECL unit_test_log_formatter { public: /// Types of log entries (messages written into a log) enum log_entry_types { BOOST_UTL_ET_INFO, ///< Information message from the framework BOOST_UTL_ET_MESSAGE, ///< Information message from the user BOOST_UTL_ET_WARNING, ///< Warning (non error) condition notification message BOOST_UTL_ET_ERROR, ///< Non fatal error notification message BOOST_UTL_ET_FATAL_ERROR ///< Fatal error notification message }; //! Constructor unit_test_log_formatter() : m_log_level(log_all_errors) {} // Destructor virtual ~unit_test_log_formatter() {} // @name Test start/finish /// Invoked at the beginning of test module execution /// /// @param[in] os output stream to write a messages to /// @param[in] test_cases_amount total test case amount to be run /// @see log_finish virtual void log_start( std::ostream& os, counter_t test_cases_amount ) = 0; /// Invoked at the end of test module execution /// /// @param[in] os output stream to write a messages into /// @see log_start virtual void log_finish( std::ostream& os ) = 0; /// Invoked when Unit Test Framework build information is requested /// /// @param[in] os output stream to write a messages into virtual void log_build_info( std::ostream& os ) = 0; // @} // @name Test unit start/finish /// Invoked when test unit starts (either test suite or test case) /// /// @param[in] os output stream to write a messages into /// @param[in] tu test unit being started /// @see test_unit_finish virtual void test_unit_start( std::ostream& os, test_unit const& tu ) = 0; /// Invoked when test unit finishes /// /// @param[in] os output stream to write a messages into /// @param[in] tu test unit being finished /// @param[in] elapsed time in microseconds spend executing this test unit /// @see test_unit_start virtual void test_unit_finish( std::ostream& os, test_unit const& tu, unsigned long elapsed ) = 0; /// Invoked if test unit skipped for any reason /// /// @param[in] os output stream to write a messages into /// @param[in] tu skipped test unit /// @param[in] reason explanation why was it skipped virtual void test_unit_skipped( std::ostream& os, test_unit const& tu, const_string /* reason */) { test_unit_skipped( os, tu ); } /// Deprecated version of this interface virtual void test_unit_skipped( std::ostream& /* os */, test_unit const& /* tu */) {} /// Invoked when a test unit is aborted virtual void test_unit_aborted( std::ostream& /* os */, test_unit const& /* tu */) {} // @} // @name Uncaught exception report /// Invoked when Unit Test Framework detects uncaught exception /// /// The framwork calls this function when an uncaught exception it detected. /// This call is followed by context information: /// - one call to @c entry_context_start, /// - as many calls to @c log_entry_context as there are context entries /// - one call to @c entry_context_finish /// /// The logging of the exception information is finilized by a call to @c log_exception_finish. /// /// @param[in] os output stream to write a messages into /// @param[in] lcd information about the last checkpoint before the exception was triggered /// @param[in] ex information about the caught exception /// @see log_exception_finish virtual void log_exception_start( std::ostream& os, log_checkpoint_data const& lcd, execution_exception const& ex ) = 0; /// Invoked when Unit Test Framework detects uncaught exception /// /// Call to this function finishes uncaught exception report. /// @param[in] os output stream to write a messages into /// @see log_exception_start virtual void log_exception_finish( std::ostream& os ) = 0; // @} // @name Regular log entry /// Invoked by Unit Test Framework to start new log entry /// Call to this function starts new log entry. It is followed by series of log_entry_value calls and finally call to log_entry_finish. /// A log entry may consist of one or more values being reported. Some of these values will be plain strings, while others can be complicated /// expressions in a form of "lazy" expression template lazy_ostream. /// @param[in] os output stream to write a messages into /// @param[in] led log entry attributes /// @param[in] let log entry type log_entry_finish /// @see log_entry_value, log_entry_finish /// /// @note call to this function may happen before any call to test_unit_start or all calls to test_unit_finish as the /// framework might log errors raised during global initialization/shutdown. virtual void log_entry_start( std::ostream& os, log_entry_data const& led, log_entry_types let ) = 0; /// Invoked by Unit Test Framework to report a log entry content /// /// This is one of two overloaded methods to report log entry content. This one is used to report plain string value. /// @param[in] os output stream to write a messages into. /// @param[in] value log entry string value /// @see log_entry_start, log_entry_finish virtual void log_entry_value( std::ostream& os, const_string value ) = 0; /// Invoked by Unit Test Framework to report a log entry content /// This is one of two overloaded methods to report log entry content. This one is used to report some complicated expression passed as /// an expression template lazy_ostream. In most cases default implementation provided by the framework should work as is (it just converts /// the lazy expression into a string. /// @param[in] os output stream to write a messages into /// @param[in] value log entry "lazy" value /// @see log_entry_start, log_entry_finish virtual void log_entry_value( std::ostream& os, lazy_ostream const& value ); // there is a default impl /// Invoked by Unit Test Framework to finish a log entry report /// @param[in] os output stream to write a messages into /// @see log_entry_start, log_entry_start virtual void log_entry_finish( std::ostream& os ) = 0; // @} // @name Log entry context report /// Invoked by Unit Test Framework to start log entry context report /// Unit Test Framework logs for failed assertions and uncaught exceptions context if one was defined by a test module. /// Context consists of multiple "scopes" identified by description messages assigned by the test module using /// BOOST_TEST_INFO/BOOST_TEST_CONTEXT statements. /// @param[in] os output stream to write a messages into /// @param[in] l entry log_level, to be used to fine tune the message /// @see log_entry_context, entry_context_finish virtual void entry_context_start( std::ostream& os, log_level l ) = 0; /// Invoked by Unit Test Framework to report log entry context "scope" description /// Each "scope" description is reported by separate call to log_entry_context. /// @param[in] os output stream to write a messages into /// @param[in] value context "scope" description /// @see log_entry_start, entry_context_finish virtual void log_entry_context( std::ostream& os, const_string value ) = 0; /// Invoked by Unit Test Framework to finish log entry context report /// @param[in] os output stream to write a messages into /// @see log_entry_start, entry_context_context virtual void entry_context_finish( std::ostream& os ) = 0; // @} // @name Log level management /// Sets the log level of the logger/formatter /// /// Some loggers need to manage the log level by their own. This /// member function let the implementation decide of that. /// @par Since Boost 1.62 virtual void set_log_level(log_level new_log_level); /// Returns the log level of the logger/formatter /// @par Since Boost 1.62 virtual log_level get_log_level() const; // @} // @name Stream management /// Returns a default stream for this logger. /// /// The returned string describes the stream as if it was passed from /// the command line @c "--log_sink" parameter. With that regards, @b stdout and @b stderr /// have special meaning indicating the standard output or error stream respectively. /// /// @par Since Boost 1.62 virtual std::string get_default_stream_description() const { return "stdout"; } // @} protected: log_level m_log_level; }; } // namespace unit_test } // namespace boost //____________________________________________________________________________// #include <boost/test/detail/enable_warnings.hpp> #endif // BOOST_TEST_UNIT_TEST_LOG_FORMATTER_HPP_071894GER