[issue7559] TestLoader.loadTestsFromName swallows import errors

[Chris Jerdonek]

Chris Jerdonek <chris.jerdonek at gmail.com> added the comment:

FYI, there seems to be a bug in the code cited above:

http://twistedmatrix.com/trac/browser/trunk/twisted/python/reflect.py#L382

For example, _importAndCheckStack('package.subpackage.module') raises
_NoModuleFound in the following scenario:

package/subpackage/__init__.py:
   import no_exist

when it should instead raise an ImportError from the buggy __init__.py.

I now think there should be at least a few unit tests to cover this case and a couple similar permutations.

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<http://bugs.python.org/issue7559>
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