this is perfectly fine BUT in general we could switch to more lightweight nose-style definitions where tests are not methods of TestCase but just functions, see e.g. mvpa2/tests/test_dataset_formats.py . and then remove all the 'def suite' and below it

also we still rely on manual "assembly" of test suites -- so add this one to mvpa2/tests/__init__.py -- you will see where.... due to use of assert_equal anyways it should go into ```collect_nose_tests```