Incomplete BOOST_TEST_DONT_PRINT_LOG_VALUE

[Marek Kurdej <curdeius@…>]

When we use a user-defined error without overloaded operator<<(std::ostream&, T const&), we have to use BOOST_TEST_DONT_PRINT_LOG_VALUE in order to prevent UTF to print output to log.

BOOST_TEST_DONT_PRINT_LOG_VALUE works correctly only if you use macros like BOOST_CHECK_EQUAL.

However, BOOST_CHECK_EQUAL_COLLECTIONS provokes compile-time error. For instance, on MSVC2010 (Windows x64), the error message is:

compile-time error C2679: binary '<<' : no operator found which takes a right-hand operand of type 'const MyClass' (or there is no acceptable conversion)	c:\lib\Boost\include\boost-1_54\boost\test\utils\wrap_stringstream.hpp	66
}}}.

The problem is that ```BOOST_CHECK_EQUAL_COLLECTIONS`` uses ```operator<<( basic_wrap_stringstream<CharT>& targ, T const& t )``` from wrap_stringstream.hpp, whereas BOOST_CHECK_EQUAL uses ```print_log_value::operator()( std::ostream& ostr, T const& t )``` from test_tools.hpp.

BOOST_TEST_DONT_PRINT_LOG_VALUE only specializes the latter.

The solution is to partially specialize the former template as well.

[Marek Kurdej <curdeius@…>]

Sample program which reveals the problem.

[Marek Kurdej <curdeius@…>]

Proposed patch.

[Raffi Enficiaud]

Fixed in develop