Historically, -m added the empty string as sys.path
zero, meaning it resolved imports against the current
working directory, the same way -c and the interactive
prompt do.
This changes the sys.path initialisation to add the
*starting* working directory as sys.path[0] instead,
such that changes to the working directory while the
program is running will have no effect on imports
when using the -m switch.
Adds `load_package_tests` function to test.support, uses it in test_asyncio,
test_email, test_json, test_tools, test_importlib and all test_importlib
sub-packages to implement test discovery.
When test.support was converted to a package, it started silently
skipping the tests which needed to download support data to run.
This change refactors the affected code, and also tidies up
test.support.findfile to remove the unused *here* parameter, document
the *subdir* parameter and rename the *filename* parameter to avoid
shadowing the file builtin and be consistent with the documentation.
The unexpected skips were noticed and reported by Zachary Ware
This moves us further in the direction of using normal unittest facilities
instead of specialized regrtest ones. Any test module that can be correctly
run currently using 'python unittest -m test.test_xxx' can now be converted to
use normal unittest test loading by simply deleting its test_main, thus no
longer requiring manual maintenance of the list of tests to run. (Not all
tests can be converted that easily, since test_main sometimes does some
additional things (such as reap_children or reap_threads). In those cases the
extra code may be moved to setUpModule/tearDownModule methods, or perhaps the
same ends can be achieved in a different way, such as moving the decorators to
the test classes that need them, etc.)
I don't advocate going through and making this change wholesale, but any time
a list of tests in test_main would otherwise need to be updated, consideration
should instead be given to deleting test_main.
Stéphane Wirtel
Andrés Delfino
Ville Skyttä
Serhiy Storchaka
Nick Coghlan
Cheryl Sabella
Daisuke Miyakawa
Stefan Grönke
Louie Lu
Terry Jan Reedy
Martin Panter
Georg Brandl
Zachary Ware
Gregory P. Smith
Larry Hastings
Antoine Pitrou
Eli Bendersky
R David Murray
Ezio Melotti
Benjamin Peterson
Sandro Tosi
Éric Araujo