django-1.9 fails test under pypy

[Justin]

Testsuite has been run with
pypy tests/runtests.py --settings=test_sqlite -v2

django-1.8 works fine with same setup as cpython does.

Traceback (most recent call last):
  File "<builtin>/app_main.py", line 75, in run_toplevel
  File "tests/runtests.py", line 459, in <module>
    options.debug_sql, options.parallel)
  File "tests/runtests.py", line 276, in django_tests
    extra_tests=extra_tests,
  File "/var/tmp/portage/dev-python/django-1.9/work/Django-1.9/django/test/runner.py", line 533, in run_tests
    result = self.run_suite(suite)
  File "/var/tmp/portage/dev-python/django-1.9/work/Django-1.9/django/test/runner.py", line 494, in run_suite
    ).run(suite)
  File "/usr/lib64/pypy/lib-python/2.7/unittest/runner.py", line 151, in run
    test(result)
  File "/usr/lib64/pypy/lib-python/2.7/unittest/suite.py", line 70, in __call__
    return self.run(*args, **kwds)
  File "/var/tmp/portage/dev-python/django-1.9/work/Django-1.9/django/test/runner.py", line 327, in run
    subsuite_index, events = test_results.next(timeout=0.1)
  File "/usr/lib64/pypy/lib-python/2.7/multiprocessing/pool.py", line 659, in next
    raise value
PicklingError: Can't pickle <class 'app_main.CommandLineError'>: it's not found as app_main.CommandLineError
 * ERROR: dev-python/django-1.9::gentoo failed (test phase):
 *   Tests fail with pypy

[Simon Charette]

Do the tests pass if a single process is used pypy tests/runtests.py --settings=test_sqlite -v2 --parallel=1?

[Tim Graham]

Yes, this error is related to parallel test running. To see the test failures you can use --parallel=1 or pip install tblib.

There are some actual test failures once you get past the reported error and I opened ​a thread on the django-developers mailing list about it.