Re: [Boost-users] Boost.Test - how to print the value of a variable in case of error?

[Please do not mail me a copy of your followup] boost-users@lists.boost.org spake the secret code thusly:

Imagine this:

BOOST_CHECK_EQUAL(cont.erase(key),1u);

First, I recommend use of BOOST_REQUIRES_xxx instead of BOOST_CHECK_xxx.

If it fails, it tells me this:

basics.cpp(61): error in "test_case": check cont.erase(key) == 1u failed [0 != 1]

If you use BOOST_CHECK_MESSAGE(predicate, message), you can create a custom failure message that contains additional context: #define BOOST_TEST_MODULE example #include #include <cmath> BOOST_AUTO_TEST_CASE( test ) { double res = std::sin( 45. ); BOOST_WARN_MESSAGE( res > 1, "sin(45){" << res << "} is <= 1. Hmm.. Strange. " ); } -- "The Direct3D Graphics Pipeline" -- DirectX 9 draft available for download http://legalizeadulthood.wordpress.com/the-direct3d-graphics-pipeline/ Legalize Adulthood! http://legalizeadulthood.wordpress.com