The Zope 2.7 test suite no longer fulfills an essential unit test suite
requirement: that tests can be run in isolation.
Many test files contain import Zope; Zope.startup().
When run in isolation, many of them fail because getConfiguration().dbtab
is None.
Some test files seem to hande this
I usually use test.py --dir lib/python/some/directory to test
subsections of Zope or test.py lib/python/a/file.py works too. That
said I agree it would be nice to have these tests continue to work
standalone as they're written. This would boil down to being able to
set the ZOPE_CONFIG attribute
