unittest: object has no attribute '_removed_tests'

[0-wiz-0]

BPO	23155
Nosy	@0-wiz-0, @berkerpeksag, @sigmavirus24

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2016-09-28.00:56:56.098>
created_at = <Date 2015-01-03.19:38:03.429>
labels = ['extension-modules', 'type-bug', 'invalid']
title = "unittest: object has no attribute '_removed_tests'"
updated_at = <Date 2016-09-28.00:56:56.096>
user = 'https://github.com/0-wiz-0'

bugs.python.org fields:

activity = <Date 2016-09-28.00:56:56.096>
actor = 'berker.peksag'
assignee = 'none'
closed = True
closed_date = <Date 2016-09-28.00:56:56.098>
closer = 'berker.peksag'
components = ['Extension Modules']
creation = <Date 2015-01-03.19:38:03.429>
creator = 'wiz'
dependencies = []
files = []
hgrepos = []
issue_num = 23155
keywords = []
message_count = 3.0
messages = ['233365', '233425', '277571']
nosy_count = 3.0
nosy_names = ['wiz', 'berker.peksag', 'icordasc']
pr_nums = []
priority = 'normal'
resolution = 'not a bug'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue23155'
versions = ['Python 3.4']

[0-wiz-0]

On NetBSD with python-3.4.2 I see the following issue when running the tests for py-flake8-2.2.5:

running build_ext
test_get_parser (flake8.tests.test_engine.TestEngine) ... ok
test_get_python_version (flake8.tests.test_engine.TestEngine) ... ok
test_get_style_guide (flake8.tests.test_engine.TestEngine) ... ok
test_get_style_guide_kwargs (flake8.tests.test_engine.TestEngine) ... ok
test_register_extensions (flake8.tests.test_engine.TestEngine) ... ok
test_stdin_disables_jobs (flake8.tests.test_engine.TestEngine) ... ok
test_windows_disables_jobs (flake8.tests.test_engine.TestEngine) ... ok
Traceback (most recent call last):
  File "setup.py", line 74, in <module>
    test_suite='nose.collector',
  File "/usr/pkg/lib/python3.4/distutils/core.py", line 148, in setup
    dist.run_commands()
  File "/usr/pkg/lib/python3.4/distutils/dist.py", line 955, in run_commands
    self.run_command(cmd)
  File "/usr/pkg/lib/python3.4/distutils/dist.py", line 974, in run_command
    cmd_obj.run()
  File "/usr/pkg/lib/python3.4/site-packages/setuptools/command/test.py", line 142, in run
    self.with_project_on_sys_path(self.run_tests)
  File "/usr/pkg/lib/python3.4/site-packages/setuptools/command/test.py", line 122, in with_project_on_sys_path
    func()
  File "/usr/pkg/lib/python3.4/site-packages/setuptools/command/test.py", line 163, in run_tests
    testRunner=self._resolve_as_ep(self.test_runner),
  File "/usr/pkg/lib/python3.4/unittest/main.py", line 93, in __init__
    self.runTests()
  File "/usr/pkg/lib/python3.4/unittest/main.py", line 244, in runTests
    self.result = testRunner.run(self.test)
  File "/usr/pkg/lib/python3.4/unittest/runner.py", line 168, in run
    test(result)
  File "/usr/pkg/lib/python3.4/unittest/suite.py", line 87, in __call__
    return self.run(*args, **kwds)
  File "/usr/pkg/lib/python3.4/unittest/suite.py", line 130, in run
    self._removeTestAtIndex(index)
  File "/usr/pkg/lib/python3.4/unittest/suite.py", line 83, in _removeTestAtIndex
    self._removed_tests += test.countTestCases()
  File "/usr/pkg/lib/python3.4/unittest/suite.py", line 41, in countTestCases
    cases = self._removed_tests
AttributeError: 'FinalizingSuiteWrapper' object has no attribute '_removed_tests'
*** Error code 1

I have reported this

https://gitlab.com/pycqa/flake8/issues/19#note_712215

and Ian Cordasco said this looks like a bug in the unittest module, not py-flake8.

[sigmavirus24]

Keep in mind, this could also be a problem with NetBSD's distribution of python.

[berkerpeksag]

The culprit is the test_suite='nose.collector' line here. It looks like this has already been fixed in nose: nose-devs/nose#759