Just achieved a result I've been trying to get to pretty much since
diving into helping with the Python 3 port of Sage:
$ ./sage -t src/sage/doctest/
too many failed tests, not using stored timings
Running doctests with ID 2017-11-29-16-09-22-b19471aa.
Git branch: u/embray/python3/doctest-fixes
Using --optional=mpir,python2,sage
Doctesting 11 files.
sage -t src/sage/doctest/util.py
[141 tests, 1.30 s]
sage -t src/sage/doctest/external.py
[38 tests, 1.62 s]
sage -t src/sage/doctest/__init__.py
[0 tests, 0.00 s]
sage -t src/sage/doctest/fixtures.py
[59 tests, 1.18 s]
sage -t src/sage/doctest/sources.py
[366 tests, 2.16 s]
sage -t src/sage/doctest/all.py
[0 tests, 0.00 s]
sage -t src/sage/doctest/reporting.py
[111 tests, 1.41 s]
sage -t src/sage/doctest/parsing.py
[271 tests, 2.39 s]
sage -t src/sage/doctest/control.py
[198 tests, 18.71 s]
sage -t src/sage/doctest/forker.py
[450 tests, 106.73 s]
sage -t src/sage/doctest/test.py
[23 tests, 51.69 s]
----------------------------------------------------------------------
All tests passed!
----------------------------------------------------------------------
Total time for all tests: 246.0 seconds
cpu time: 24.2 seconds
cumulative wall time: 187.2 seconds
This required a number of (mostly little) fixes to the doctest
framework itself, miscellaneous support frameworks, and a large chunk
of the rest of Sage (since the test suite for sage.doctest itself runs
the tests for a few modules as part of its self-test). I haven't made
tickets for all these fixes yet either, so you won't be able to
reproduce this outside my private branch just yet.
But having a test runner whose results can be somewhat relied on
should allow for rapid progress on the rest of the work needed for
Python 3 support, since running the test suites for individual modules
and/or entire packages will make it easier to pinpoint where work is
needed. I'll keep working to organize my existing fixes into a
reasonable set of patches so that the doctest runner is working for
everyone. Then perhaps we can organize a little Python 3 bug bash.
Best,
Erik
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