cheat sheets.

Test Macros
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<level> : WARN  (don't fail, only print a warning)
          CHECK (generate error, but continue)
          FAIL  (generate error and stop immediately)

BOOST_<level>_BITWISE_EQUAL
BOOST_<level>_CLOSE
BOOST_<level>_CLOSE_FRACTION
BOOST_<level>_EQUAL
BOOST_<level>_EQUAL_COLLECTION
BOOST_<level>_EXCEPTION
BOOST_<level>_GE
BOOST_<level>_GT
BOOST_<level>_LE
BOOST_<level>_LT
BOOST_<level>_MESSAGE
BOOST_<level>_NE
BOOST_<level>_NO_THROW
BOOST_<level>_PREDICATE
BOOST_<level>_SMALL
BOOST_<level>_THROW
BOOST_ERROR
BOOST_FAIL
BOOST_IS_DEFINED