As per the documentation:
Messages generated by this tool do not appear in test log output with default value of the active log level threshold. For these messages to appear the active log level threshold has to be set to a value below or equal to "message".
Either set the environment variable BOOST_TEST_LOG_LEVEL
to message
when running your test binary:
BOOST_TEST_LOG_LEVEL=message <your_test>
or pass the command line argument --log_level
:
<your_test> --log_level=message