BOOST_CHECK_NO_THROW how to get exception message printed
I found myself annoyed by the same problem with BOOST_REQUIRE_NO_THROW
. I solved it by simply removing the BOOST_REQUIRE_NO_THROW
. This results in output like:
unknown location(0): fatal error in "TestName": std::runtime_error: Exception message
and aborts the test (but goes on with the next text), which is what I wanted. This doesn't help much if you wanted to use BOOST_CHECK_NO_THROW or BOOST_WARN_NO_THROW, though.
I read a bit in the boost headers and redefined BOOST_CHECK_NO_THROW_IMPL in my own header file I use in the project to redefine the boost behavior. Now it looks like this:
#ifndef _CATCH_BOOST_NO_THROW_H_
#define _CATCH_BOOST_NO_THROW_H_
#include <boost/test/unit_test.hpp>
#include <sstream>
#include <string>
#define BOOST_CHECK_NO_THROW_IMPL( S, TL ) \
try { \
S; \
BOOST_CHECK_IMPL( true, "no exceptions thrown by " BOOST_STRINGIZE( S ), TL, CHECK_MSG ); } \
catch( const std::exception & e ) { \
std::stringstream ss; \
ss << std::endl \
<< "-----------------------------------------------" << std::endl \
<< "test case: " << boost::unit_test::framework::current_test_case().p_name << std::endl \
<< std::endl << "exception message: " << e.what() << std::endl; \
BOOST_TEST_MESSAGE(ss.str()); \
BOOST_CHECK_IMPL( false, "exception thrown by " BOOST_STRINGIZE( S ), TL, CHECK_MSG ); \
} \
catch( ... ) { \
std::stringstream ss; \
ss << std::endl \
<< "-----------------------------------------------" << std::endl \
<< "test case: " << boost::unit_test::framework::current_test_case().p_name << std::endl \
<< std::endl << "exception message : <unknown exception>" << std::endl; \
BOOST_TEST_MESSAGE(ss.str()); \
BOOST_CHECK_IMPL( false, "exception thrown by " BOOST_STRINGIZE( S ), TL, CHECK_MSG ); \
} \
/**/
#define BOOST_WARN_NO_THROW( S ) BOOST_CHECK_NO_THROW_IMPL( S, WARN )
#define BOOST_CHECK_NO_THROW( S ) BOOST_CHECK_NO_THROW_IMPL( S, CHECK )
#define BOOST_REQUIRE_NO_THROW( S ) BOOST_CHECK_NO_THROW_IMPL( S, REQUIRE )
#endif // _CATCH_BOOST_NO_THROW_H_
The disadvantages are: It works as long as there are no changes in BOOST_*_NO_THROW
and
the exception message will be printed before it is marked as error in the test output. That looks in the first place a bit pitty, that's why I group the output by writing "---" to the outstream to enhance the reading. But code after BOOST_CHECK_IMPL will never be reached.
The solution above work quite nice for me. Feel free to use to, if you got the same whish =)
(Using CDash for ctest output, don't forget to increase the test output limit, or simple disable the limit: http://web.archiveorange.com/archive/v/5y7PkVuHtkmVcf7jiWol )