This means that the tests still work if you are executing them from a CWD other than the src dir -- *if* the "bin/tahoe" is found at os.path.dirname(os.path.dirname(os.path.dirname(allmydata.__file__))).
If no file is found at that location, then just skip the tests of executing the "tahoe" executable, because we don't want to accidentally run those tests against an executable from a different version of tahoe.
This is to fix#591 ("make quicktest" could be quicker and less noisy). This means that "make quicktest" won't work unless the user has manually installed Twisted already such that the "trial" executable is on their PATH and the Twisted package is on their PYTHONPATH. This bypasses the behavior of setuptools_trial which builds and checks package dependencies before executing the tests.
This is necessary because loading allmydata code now depends on PYTHONPATH manipulation which is done in the "bin/tahoe" script. Unfortunately it makes test_runner slower since it launches and waits for many subprocesses.
This reverses some, but not all, of the changes that were committed in the following set of patches.
rolling back:
Sun Jan 18 09:54:30 MST 2009 toby.murray
* add 'web.ambient_upload_authority' as a paramater to tahoe.cfg
M ./src/allmydata/client.py -1 +3
M ./src/allmydata/test/common.py -7 +9
A ./src/allmydata/test/test_ambient_upload_authority.py
M ./src/allmydata/web/root.py +12
M ./src/allmydata/webish.py -1 +4
Sun Jan 18 09:56:08 MST 2009 zooko@zooko.com
* trivial: whitespace
I ran emacs's "M-x whitespace-cleanup" on the files that Toby's recent patch had touched that had trailing whitespace on some lines.
M ./src/allmydata/test/test_ambient_upload_authority.py -9 +8
M ./src/allmydata/web/root.py -2 +1
M ./src/allmydata/webish.py -2 +1
Mon Jan 19 14:16:19 MST 2009 zooko@zooko.com
* trivial: remove unused import noticed by pyflakes
M ./src/allmydata/test/test_ambient_upload_authority.py -1
Mon Jan 19 21:38:35 MST 2009 toby.murray
* doc: describe web.ambient_upload_authority
M ./docs/configuration.txt +14
M ./docs/frontends/webapi.txt +11
Mon Jan 19 21:38:57 MST 2009 zooko@zooko.com
* doc: add Toby Murray to the CREDITS
M ./CREDITS +4
Using pkg_resources is probably better if it works -- zope.interface doesn't have a __version__ attribute that we can query, but pkg_resources knows zope.interface's version number, for one thing.
This code falls back to the old way -- looking at the __version__ attributes and __file__ attributes -- if the pkg_resources way doesn't answer.
Note that this patch also changes the capitalization of "Nevow", "Twisted", and "pyOpenSSL", and the spelling of "allmydata-tahoe". These changes are not frivolous: they are reflecting the fact that we are naming Python packages (technically called Python "distributions") instead of Python modules (technically and confusingly called Python "packages") here. The package ("distribution") is named "allmydata-tahoe". The module ("package") is named "allmydata".
When this feature is turned on, then setuptools doesn't create easy-install.pth, setuptools.pth, or site.py in the target site-packages dir. I don't know why not and we should probably open a ticket on the setuptools tracker and/or hack setuptools to create those files anyway. But for now (for the Tahoe-1.3.0 release), we're going to leave --multi-version mode off and require users to manually uninstall any packages which are too old and thus conflict with our newer dependencies.
