Subunit output doesn't handle doctest correctly

[Thomas Herve]

When using the --subunit option of the zope testrunner, I realized that my number of tests dropped down. In the subunit output, I only have that for one doctest file:

test: README_txt
successful: README_txt

The "normal" runner reports one test count for each assertion, instead of one for the whole file. Furthermore, the fact that the file is not prefixed makes all the doctests look the same in the output.

[Jonathan Lange (jml)]

Actually, the bug is that DocTestCase.id() returns unhelpful information. If we change zope.testing to use str(test), then all of the real unit tests will have bad ids. Perhaps we can do a type-based check to work around the doctest defect.

[Marius Gedminas (mgedmin)]

This needs to be fixed in zope.testrunner, not zope.testing.

[Colin Watson (cjwatson)]

The zope.testrunner project on Launchpad has been archived at the request of the Zope developers (see https://answers.launchpad.net/launchpad/+question/683589 and https://answers.launchpad.net/launchpad/+question/685285). If this bug is still relevant, please refile it at https://github.com/zopefoundation/zope.testrunner.